±60V Fault Tolerant 3.0V to 5.5V
RS-485/RS-422 Transceivers
XR33052/XR33053/XR33055/XR33058
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Description
The XR33052, XR33053, XR33055, and XR33058 (XR3305x) are
a family of high performance RS-485/RS-422 devices designed for
improved performance in noisy industrial environments and increased
tolerance to system faults.
The analog bus pins can withstand direct shorts up to ±60V and are
protected against ESD events up to ±15kV HBM. An extended ±25V
common mode operating range allows for more reliable operation in
noisy environments.
The XR3305x receivers include full fail-safe circuitry, guaranteeing a
logic-high receiver output when the receiver inputs are open, shorted
or undriven. The XR33052/53/55 receiver input impedance is at least
120kΩ (1/10 unit load), allowing more than 320 devices on the bus.
The XR33058 receiver input impedance is at least 30KΩ (1/2.5 unit
load), allowing more than 80 devices on the bus.
The driver is protected by short circuit detection as well as thermal
shutdown and maintains high impedance in shutdown or when
powered off.
The DE and RE pins include hot swap circuitry to prevent false
transitions on the bus during power up or live insertion and can enter
a 1nA low current shutdown mode for extreme power savings.
The XR33052/55/58 are half-duplex transceivers offered in an
8-pin NSOIC package and operates at a maximum data rates of 250k,
1M and 20Mbps. The XR33053 is a full-duplex transceiver offered in a
14-pin NSOIC package and operates at a maximum data rate of
1 Mbps.
Typical Application
FEATURES
3.0V to 5.5V operation
±60V fault tolerance on analog bus pins
Extended ±25V common mode operation
Robust ESD protection:
±15kV HBM (bus pins)
±4kV HBM (non-bus pins)
Enhanced receiver fail-safe protection for
open, shorted or terminated but idle data
lines
Hot swap glitch protection on DE and
RE pins
Driver short circuit current limit and
thermal shutdown for overload protection
Reduced unit loads allows up to 320
devices on bus
Industry standard 8-pin and 14-pin
NSOIC packages
-40°C to 85°C and -40°C to 105°C ambient
operating temperature ranges
APPLICATIONS
Industrial control networks
HVAC networks
Building and process automation
Remote utility meter reading
Energy monitoring and control
Long or unterminated transmission lines
Figure 1. Typical Application
VCC
5V
DI
DE
60V POWER BUS
FAULT TOLERANT UP TO 60V
120Ω
120Ω VCC
5V
R
RE
DI
DE
R
RE
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Absolute Maximum Ratings
Stresses beyond the limits listed below may cause
permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect
device reliability and lifetime.
VCC ..................................................................................-0.3V to 7.0V
Input voltage (DE and DI) ............................... -0.3V to 7.0V
Input voltage (RE) .............................. -0.3V to (VCC + 0.3V)
Receiver output voltage (RO) ............ -0.3V to (VCC + 0.3V)
Driver output voltage (Y, Z, A/Y and B/Z) .................... ±60V
Receiver input voltage (A, B, A/Y and B/Z) .................±60V
Transient voltage pulse, through 100Ω ......................±100V
Driver output current ...............................................±250mA
Maximum junction temperature ................................. 150°C
Storage temperature ................................... -65°C to 150°C
Lead temperature (soldering 10 seconds) ................. 300°C
Operating Conditions
Supply voltage range ........................................3.0V to 5.5V
Operating temperature range ...................... -40°C to 105°C
Package power dissipation, 8-pin NSOIC θ
JA .... 128.4°C/W
Package power dissipation, 14-pin NSOIC θ
JA ....... 86°C/W
XR33052/XR33053/XR33055/XR33058
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Electrical Characteristics
Unless otherwise noted: VCC = 3.0V to 5.5V, TA = TMIN to TMAX. Typical values are at VCC = 5.0V, TA = 25°C.
Symbol Parameter Conditions Min Typ Max Units
Driver DC Characteristics
VCC Supply voltage range 3.0 5.5 V
VOD
Differential driver output,
4.5V ≤ VCC ≤ 5.5V
RL = 100Ω (RS-422), Figure 3 2 VCC V
RL = 54Ω (RS-485), Figure 3 1.5 VCC V
-25V ≤ VCM ≤ 25V, Figure 4 1.5 VCC V
Differential driver output,
3.0V ≤ VCC ≤ 4.5V
RL = 100Ω (RS-422), Figure 3 0.85 VCC V
RL = 54Ω (RS-485), Figure 3 0.65 VCC V
∆VOD
Change in magnitude of differential
output voltage(1)
RL = 100Ω (RS-422) or
RL = 54Ω (RS-485), Figure 3
±0.2 V
VCM Driver common-mode output voltage
(steady state) 1 3 V
∆VCM
Change in magnitude of common-mode
output voltage(1) ±0.2 V
VIH Logic high input thresholds
(DI, DE and RE)
VCC = 3.3V 2.0 V
VCC = 5.0V 2.4 V
VIL Logic low input thresholds (DI, DE and RE) 0.8 V
VHYS Input hysteresis (DI, DE and RE) 100 mV
IIN Logic input current (DI, DE and RE) 0V ≤ VIN ≤ VCC,
After first transition(2) ±1 µA
IINHS Logic input current hot swap (DE and RE) Until first transition(2) 100 ±200 µA
IA, B Input current (A and B)
VCC = 0V or 5.5V, VOUT = 12V, DE = 0V,
for XR33052/53/55 100 µA
VCC = 0V or 5.5V, VOUT = -7V, DE = 0V,
for XR33052/53/55 -80 µA
VOUT = 12V, DE = 0V,
VCC = 0V or 5.5V, for XR33058 400 μA
VOUT = -7V, DE = 0V,
VCC = 0V or 5.5V, for XR33058 -320 μA
IOL Output leakage (Y and Z) full-duplex
VOUT = 12V, DE = 0V, VCC = 0V or 5.5V 100 µA
VOUT = -7V, DE = 0V, VCC = 0V or 5.5V -80 µA
IOSD Driver short-circuit output current -60V ≤ VOUT ≤ 60V, DI = 0V or VCC,
Figure 5 ±250 mA
NOTES:
1. Change in magnitude of differential output voltage and change in magnitude of common mode output voltage are the changes in output voltage when DI input
changes state.
2. The hot swap feature disables the DE and RE inputs for the first 10μs after power is applied. Following this time period, these inputs are weakly pulled to their disabled
state (low for DE, high for RE) until the first transition, after which they become high impedance inputs.
XR33052/XR33053/XR33055/XR33058
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Electrical Characteristics (Continued)
Unless otherwise noted: VCC = 3.0V to 5.5V, TA = TMIN to TMAX. Typical values are at VCC = 5.0V, TA = 25°C.
Symbol Parameter Conditions Min Typ Max Units
Driver Thermal Characteristics
TTS Thermal shutdown temperature Junction temperature(1) 175 °C
TTSH Thermal shutdown hysteresis(1) 15 °C
Receiver DC Characteristics
VSTH Receiver differential input signal
threshold voltage (VA - VB)-25V ≤ VOUT ≤ 25V ±85 ±200 mV
∆VSTH Receiver differential input signal hysteresis 170 mV
VFSTH- Negative going receiver differential input
fail-safe threshold voltage (VA - VB)-25V ≤ VOUT ≤ 25V -200 -125 -40 mV
VFSTH+ Positive going receiver differential input
fail-safe threshold voltage (VA - VB)-25V ≤ VOUT ≤ 25V -100 -10 mV
∆VFSTH
Receiver differential input
fail-safe hysteresis 25 mV
VOH Receiver output high voltage (RO) IOUT = -4mA VCC - 0.6 V
VOL Receiver output low voltage (RO) IOUT = 4mA 0.4 V
IOZR High-Z receiver output current 0V ≤ VOUT ≤ VCC ±1 µA
RIN RX input resistance
-25V ≤ VCM ≤ 25V, XR33052/53/55 120 kΩ
-25V ≤ VCM ≤ 25V, XR33058 30 kΩ
IOSC RX output short-circuit current 0V ≤ VRO ≤ VCC 110 mA
Supply Current
ICC Supply current No load, RE = 0V or VCC, DE = VCC,
DI = 0V or VCC 4 mA
ISHDN Supply current in shutdown mode RE = VCC, DE = 0V 0.001 1 µA
ESD Protection
ESD protection for A, B, Y, and Z Human body model ±15 kV
ESD protection for all other pins Human body model ±4 kV
NOTE:
1. This spec is guaranteed by design and bench characterization.
XR33052/XR33053/XR33055/XR33058
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Electrical Characteristics (Continued)
Driver AC Characteristics - XR33052 (250kbps)
Unless otherwise noted: VCC = 3.0V to 5.5V, TA = TMIN to TMAX. Typical values are at VCC = 5.0V, TA = 25°C.
Symbol Parameter Conditions Min Typ Max Units
tDPLH Driver propagation delay (low to high)
CL = 50pF, RL = 54Ω, Figure 7
350 1500 ns
tDPHL Driver propagation delay (high to low) 350 1600 ns
|tDPLH-tDPHL|Differential driver output skew 20 200 ns
tDR, tDF Driver differential output rise or fall time 400 1500 ns
Maximum data rate 1/tUI, duty cycle 40% to 60% 250 kbps
tDZH Driver enable to output high
CL = 50pF, RL = 500Ω, Figure 8
200 2500 ns
tDZL Driver enable to output low 200 2500 ns
tDHZ Driver disable from output high 250 ns
tDLZ Driver disable from output low 250 ns
tRZH(SHDN) Driver enable from shutdown to
output high CL = 50pF, RL = 500Ω, Figure 8
5500 ns
tRZL(SHDN) Driver enable from shutdown to
output low 5500 ns
tSHDN Time to shutdown Notes 1 and 2 50 200 600 ns
Receiver AC Characteristics -XR33052 (250kbps)
Unless otherwise noted: VCC = 3.0V to 5.5V, TA = TMIN to TMAX. Typical values are at VCC = 5.0V, TA = 25°C.
Symbol Parameter Conditions Min Typ Max Units
tRPLH Receiver propagation delay (low to high)
CL = 15pF, VID = ±2V, VID rise and
fall times < 15ns, Figure 9
200 ns
tRPHL Receiver propagation delay (high to low) 200 ns
|tRPLH-tRPHL|Receiver propagation delay skew 30 ns
Maximum data rate 1/tUI, duty cycle 40% to 60% 250 kbps
tRZH Receiver enable to output high
CL = 15pF, RL = 1kΩ, Figure 10
50 ns
tRZL Receiver enable to output low 50 ns
tRHZ Receiver disable from output high 50 ns
tRLZ Receiver disable from output low 50 ns
tRZH(SHDN) Receiver enable from shutdown to
output high CL = 15pF, RL = 1kΩ, Figure 10
3500 ns
tRZL(SHDN) Receiver enable from shutdown to
output low 3500 ns
tSHDN Time to shutdown Notes 1 and 2 50 200 600 ns
NOTES:
1. The transceivers are put into shutdown by bringing RE high and DE low simultaneously for at least 600ns. If the control inputs are in this state for less than 50ns, the device
is guaranteed to not enter shutdown. If the enable inputs are held in this state for at least 600ns, the device is ensured to be in shutdown. Note that the receiver and driver
enable times increase significantly when coming out of shutdown.
2. This spec is guaranteed by design and bench characterization.
XR33052/XR33053/XR33055/XR33058
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Electrical Characteristics (Continued)
Driver AC Characteristics - XR33053 and XR33055 (1Mbps)
Unless otherwise noted: VCC = 3.0V to 5.5V, TA = TMIN to TMAX. Typical values are at VCC = 5.0V, TA = 25°C.
Symbol Parameter Conditions Min Typ Max Units
tDPLH Driver propagation delay (low to high)
CL = 50pF, RL = 54Ω, Figure 7
150 500 ns
tDPHL Driver propagation delay (high to low) 150 500 ns
|tDPLH-tDPHL|Differential driver output skew 5 50 ns
tDR, tDF Driver differential output rise or fall time 100 200 300 ns
Maximum data rate 1/tUI, duty cycle 40% to 60% 1 Mbps
tDZH Driver enable to output high
CL = 50pF, RL = 500Ω, Figure 8
1000 2500 ns
tDZL Driver enable to output low 1000 2500 ns
tDHZ Driver disable from output high 250 ns
tDLZ Driver disable from output low 250 ns
tDZH(SHDN) Driver enable from shutdown to
output high CL = 50pF, RL = 500Ω, Figure 8
2500 4500 ns
tDZL(SHDN) Driver enable from shutdown to
output low 2500 4500 ns
tSHDN Time to shutdown Notes 1 and 2 50 200 600 ns
Receiver AC Characteristics - XR33053 and XR33055 (1Mbps)
Unless otherwise noted: VCC = 3.0V to 5.5V, TA = TMIN to TMAX. Typical values are at VCC = 5.0V, TA = 25°C.
Symbol Parameter Conditions Min Typ Max Units
tRPLH Receiver propagation delay (low to high)
CL = 15pF, VID = ±2V, VID rise and
fall times < 15ns, Figure 9
200 ns
tRPHL Receiver propagation delay (high to low) 200 ns
|tRPLH-tRPHL|Receiver propagation delay skew 30 ns
Maximum data rate 1/tUI, duty cycle 40% to 60% 1 Mbps
tRZH Receiver enable to output high
CL = 15pF, RL = 1kΩ, Figure 10
50 ns
tRZL Receiver enable to output low 50 ns
tRHZ Receiver disable from output high 50 ns
tRLZ Receiver disable from output low 50 ns
tRZH(SHDN) Receiver enable from shutdown to
output high CL = 15pF, RL = 1kΩ, Figure 10
3500 ns
tRZL(SHDN) Receiver enable from shutdown to
output low 3500 ns
tSHDN Time to shutdown Notes 1 and 2 50 200 600 ns
NOTES:
1. The transceivers are put into shutdown by bringing RE high and DE low simultaneously for at least 600ns. If the control inputs are in this state for less than 50ns, the device
is guaranteed to not enter shutdown. If the enable inputs are held in this state for at least 600ns, the device is ensured to be in shutdown. Note that the receiver and driver
enable times increase significantly when coming out of shutdown.
2. This spec is guaranteed by design and bench characterization.
XR33052/XR33053/XR33055/XR33058
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Electrical Characteristics (Continued)
Driver AC Characteristics - XR33058 (20Mbps)
Unless otherwise noted: VCC = 3.0V to 5.5V, TA = TMIN to TMAX. Typical values are at VCC = 5.0V, TA = 25°C.
Symbol Parameter Conditions Min Typ Max Units
tDPLH Driver propagation delay (low to high)
CL = 50pF, RL = 54Ω, Figure 7
25 ns
tDPHL Driver propagation delay (high to low) 25 ns
|tDPLH-tDPHL|Differential driver output skew 5 ns
tDR, tDF Driver differential output rise or fall time 15 ns
Maximum data rate 1/tUI, duty cycle 40% to 60% 20 Mbps
tDZH Driver enable to output high
CL = 50pF, RL = 500Ω, Figure 8
60 ns
tDZL Driver enable to output low 60 ns
tDHZ Driver disable from output high 250 ns
tDLZ Driver disable from output low 250 ns
tDZH(SHDN) Driver enable from shutdown to
output high CL = 50pF, RL = 500Ω, Figure 8
2200 ns
tDZL(SHDN) Driver enable from shutdown to
output low 2200 ns
tSHDN Time to shutdown Notes 1 and 2 50 200 600 ns
Receiver AC Characteristics - XR33058 (20Mbps)
Unless otherwise noted: VCC = 3.0V to 5.5V, TA = TMIN to TMAX. Typical values are at VCC = 5.0V, TA = 25°C.
Symbol Parameter Conditions Min Typ Max Units
tRPLH Receiver propagation delay (low to high)
CL = 15pF, VID = ±2V, VID rise and
fall times < 15ns, Figure 9
60 ns
tRPHL Receiver propagation delay (high to low) 60 ns
|tRPLH-tRPHL|Receiver propagation delay skew 5 ns
Maximum data rate 1/tUI, duty cycle 40% to 60% 20 Mbps
tRZH Receiver enable to output high
CL = 15pF, RL = 1kΩ, Figure 10
50 ns
tRZL Receiver enable to output low 50 ns
tRHZ Receiver disable from output high 50 ns
tRLZ Receiver disable from output low 50 ns
tRZH(SHDN) Receiver enable from shutdown to
output high CL = 15pF, RL = 1kΩ, Figure 10
2200 ns
tRZL(SHDN) Receiver enable from shutdown to
output low 2200 ns
tSHDN Time to shutdown Notes 1 and 2 50 200 600 ns
NOTES:
1. The transceivers are put into shutdown by bringing RE high and DE low simultaneously for at least 600ns. If the control inputs are in this state for less than 50ns, the device
is guaranteed to not enter shutdown. If the enable inputs are held in this state for at least 600ns, the device is ensured to be in shutdown. Note that the receiver and driver
enable times increase significantly when coming out of shutdown.
2. This spec is guaranteed by design and bench characterization.
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Pin Functions
Pin Number
Pin Name Type Description
Half-duplex
XR33052
XR33055
XR33058
Full-duplex
XR33053
1 2 RO Output
Receiver output. When RE is low and if (A-B) ≥ 200mV, RO is high.
If (A-B) ≤ -200mV, RO is low. If inputs are left floating, shorted together or
terminated and undriven for more than 2µs, the output is high.
2 3 RE Input
Receiver output enable (hot swap). When RE is low, RO is enabled.
When RE is high, RO is high impedance, RE should be high and DE should
be low to enter shutdown mode.
3 4 DE Input
Driver output enable (hot swap). When DE is high, outputs are enabled.
When DE is low, outputs are high impedance, DE should be low and RE
should be high to enter shutdown mode.
4 5 DI Input
Driver input. With DE high, a low level on DI forces non-inverting output low
and inverting output high. Similarly, a high level on DI forces non-inverting
output high and inverting output low.
5 6, 7 GND Power Ground.
8 14 VCC Power 3.0V to 5.5V power supply input, bypass to ground with 0.1μF capacitor.
12 A Input Non-inverting receiver input.
11 B Input Inverting receiver input.
9 Y Output Non-inverting driver output.
10 Z Output Inverting driver output.
6 A/Y I/O Non-inverting receiver input and non-inverting driver output.
7 B/Z I/O Inverting receiver input and inverting driver output.
1, 8, 13 N/C - Not connected.
Pin Configuration
N/C 1
RO 2
RE 3
DE 4
DI 5
GND 6
GND 7
VCC14
N/C13
A12
B11
Z10
Y9
N/C8
RO 1
RE 2
DE 3
DI 4
VCC8
B/Z7
A/Y6
GND5
XR33052, XR33055 and XR33058 Half-duplex XR33053 Full-duplex
XR33052/XR33053/XR33055/XR33058
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Pin Functions (Continued)
Transmitting
Inputs Outputs
RE DE DI Y Z
X1110
X 1 0 0 1
0 0 X High-Z
1 0 X High-Z (shutdown)
Receiving
Inputs Output
RE DE VA - VBRO
0 X ≥ 200mV 1
0 X ≤ -200mV 0
0 X Open/shorted/idle 1
1 1 X High-Z
1 0 X High-Z (shutdown)
XR33052/XR33053/XR33055/XR33058
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Figure 2. XR33052, XR33055 and XR33058 Half-duplex and XR33053 Full-duplex
Figure 3. Differential Driver Output Voltage
DDI = OV or VCC
DE = VCC
Y
Z
RL
2
VOD VCM
RL
2
Figure 4. Differential Driver Output Voltage Over Common Mode
DDI = OV or VCC
DE = VCC
Y
Z
375Ω
375Ω
60Ω
VOD VCM
Applications Information
N/C 1
RO 2
RE 3
DE 4
DI 5
GND 6
GND 7
VCC14
N/C13
A12
B11
Z10
Y9
N/C8
D
R
XR33052, XR33055 and XR33058 XR33053
R
O 1
RE 2
DE 3
DI 4
VCC8
B/Z7
A/Y6
GND
5
D
R
XR33052/XR33053/XR33055/XR33058
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REV2B
Figure 6. Transient Overvoltage Test Circuit
DEVICE POWERED
ON/OFF
A OR Z
B OR Y
VTEST
15 μs DURATION
1% DUTY CYCLE
100Ω±1%
TRANSCEIVER,
GENERATOR,
RECEIVER
Figure 7. Driver Propagation Delay Test Circuit and Timing Diagram
DVOD RLCL
Y
Z
DE = VCC
DI
Z
Y
DI 1.5V 1.5V
tSKEW = tDPLH – tDPHL
VOD
(VY - VZ)
3V
10% 90% 10%
90%
tDF
tDR
tDPLH tDPHL
OV
OV
VOD
VOD–
VOD+
Applications Information (Continued)
Figure 5. Driver Output Short Circuit Current
DDI = OV or VCC
DE = OV or VCC
Y-60V to 60V
ZIOSD
V
XR33052/XR33053/XR33055/XR33058
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REV2B
Figure 8. Driver Enable and Disable Timing Test Circuits and Timing Diagrams
DVOUT
RLCL
DE
TESTING Z: DI = OV
TESTING Y: DI = VCC Y
Z
DVOUT
RL
VCC
CL
DE
TESTING Z: DI = VCC
TESTING Y: DI = OV Y
Z
VOUT
DE 1.5V 1.5V
3V
tDZH
VOH + VOL VOH – 0.25V
2
tDHZ
OV
VOH
VOL
VOUT
DE 1.5V 1.5V
3V
tDZL
VOH + VOL
VOL + 0.25V
2
tDLZ
OV
VOH
VOL
Applications Information (Continued)
XR33052/XR33053/XR33055/XR33058
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REV2B
Figure 9. Receiver Propagation Delay Test Circuit and Timing Diagram
R RO
CL
RE = OV
A
B
tRPLH
B
A
RO
tRPHL
VID
–1V
0V
+1V
VOL
VCC/2 VCC/2
VOH
Applications Information (Continued)
XR33052/XR33053/XR33055/XR33058
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Figure 10. Receiver Enable and Disable Test Circuits and Timing Diagrams
R RO
RLCL
RE
A
B
RL
VCC
R RO
CL
RE
A
B
RO
1.5V 1.5V
3V
tRZH
VOH VOH – 0.25V
VA = VCC
VB = OV
2
tRHZ
OV
VOH
OV
RE
1.5V 1.5V
3V
tRZL
VCC + VOL VOL + 0.25V
2
tRLZ
OV
VCC
VOL
RO
VA = OV
VB = VCC
RE
Applications Information (Continued)
XR33052/XR33053/XR33055/XR33058
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Applications Information (Continued)
The XR3305x RS-485/RS-422 devices are part of Exar’s
high performance serial interface product line. The analog
bus pins can survive direct shorts up to ±60V and are
protected against ESD events up to ±15kV.
Enhanced Failsafe
Ordinary RS-485 differential receivers will be in an
indeterminate state whenever the data bus is not being
actively driven. The enhanced failsafe feature of the
XR3305x guarantees a logic-high receiver output when
the receiver inputs are open, shorted or when they are
connected to a terminated transmission line with all drivers
disabled. In a terminated bus with all transmitters disabled,
the receivers’ differential input voltage is pulled to 0V by the
termination. The XR3305x interprets 0V differential as a logic
high with a minimum 50mV noise margin while maintaining
compliance with the RS-485 standard of ±200mV. Although
the XR3305x does not need failsafe biasing resistors, it can
operate without issue if biasing is used.
Hot Swap Capability
When VCC is first applied, the XR3305x holds the driver
enable and receiver enable inactive for approximately
10μs. During power ramp-up, other system ICs may drive
unpredictable values or tristated lines may be influenced
by stray capacitance. The hot swap feature prevents the
XR3305x from driving any output signal until power has
stabilized. After the initial 10μs, the driver and receiver
enable pins are weakly pulled to their disabled states (low
for DE, high for RE) until the first transition. After the first
transition, the DE and RE pins operate as high impedance
inputs.
If circuit boards are inserted into an energized backplane
(commonly called “live insertion” or “hot swap”) power
may suddenly be applied to all circuits. Without the hot
swap capability, this situation could improperly enable the
transceiver’s driver or receiver, driving invalid data onto
shared buses and possibly causing driver contention or
device damage.
Driver Output Protection
Two mechanisms prevent excessive output current and
power dissipation caused by faults or by bus contention.
First, a driver current limit on the output stage provides
immediate protection against short circuits over the whole
common-mode voltage range. Second, a thermal shutdown
circuit forces the driver outputs into a high-impedance state
if junction temperature becomes excessive.
Line Length
The RS-485/RS-422 standard covers line lengths up to
4000ft. Maximum achievable line length is a function of
signal attenuation and noise. Termination prevents signal
reflections by eliminating the impedance mismatches on
a transmission line. Line termination is generally used if
rise and fall times are shorter than the round-trip signal
propagation time. Higher output drivers may allow longer
cables to be used.
±15kV HBM ESD Protection (Unpowered Part)
ESD protection structures are incorporated on all pins to
protect against electrostatic discharges encountered during
handling and assembly. The driver outputs and receiver
inputs of the XR3305x family have extra protection against
static electricity. Exar uses state-of-the-art structures to
protect these pins against ESD damage:
±15kV HBM for bus pins to GND
±4kV HBM for all other pins
ESD Test Conditions
ESD performance depends on a variety of conditions.
Contact Exar for a reliability report that documents test
setup, methodology and results.
Maximum Number of Transceivers on the Bus
The standard RS-485 receiver input impedance is 12kΩ (1
unit load). A standard driver can drive up to 32 unit loads.
The XR33052/53/55 transceiver has a 1/10th unit load
receiver input impedance of 120kΩ, allowing up to 320
transceivers to be connected in parallel on a communication
line. The XR33058 receiver input impedance is a least 30KΩ
(1/2.5 unit load), allowing more than 80 devices on the
bus. Any combination of the XR3305x’s and other RS-485
transceivers up to a total of 32 unit loads may be connected
to the line.
Low Power Shutdown Mode
Low power shutdown mode is initiated by bringing both RE
high and DE low simultaneously. While in shutdown devices
draw less than 1μA of supply current. DE and RE may be
tied together and driven by a single control signal. Devices
are guaranteed not to enter shutdown if RE is high and DE
is low for less than 50ns. If the inputs are in this state for at
least 600ns, the parts will enter shutdown.
Enable times tZH and tZL apply when the part is not in low
power shutdown state. Enable times tZH(SHDN) and tZL(SHDN)
apply when the parts are shutdown. The driver and receiver
take longer to become enabled from low power shutdown
tZH(SHDN) and tZL(SHDN) than from driver or receiver disable
mode (tZH and tZL).
XR33052/XR33053/XR33055/XR33058
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Applications Information (Continued)
Product Selector Guide
Part Number Operation Data Rate Shutdown Receiver/Driver
Enable
Nodes
On Bus Footprint
XR33052 Half-duplex 250kbps
Yes Yes/Yes
320
8-NSOIC
XR33053 Full-duplex
1Mbps
14-NSOIC
XR33055 Half-duplex
8-NSOIC
XR33058 Half-duplex 20Mbps 80
XR33052/XR33053/XR33055/XR33058
17/18
REV2B
Package Description
XR33052/XR33053/XR33055/XR33058
XR33052/53/55/58_DS_021617 18/18
REV2B
Exar Corporation reserves the right to make changes to the products contained in this publication in order to improve design, performance or reliability. Exar Corporation conveys
no license under any patent or other right and makes no representation that the circuits are free of patent infringement. While the information in this publication has been
carefully checked, no responsibility, however, is assumed for inaccuracies.
Exar Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected
to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless Exar Corporation
receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized; (b) the user assumes all such risks; (c) potential liability of
Exar Corporation is adequately protected under the circumstances.
Reproduction, in part or whole, without the prior written consent of Exar Corporation is prohibited. Exar, XR and the XR logo are registered trademarks of Exar Corporation.
All other trademarks are the property of their respective owners.
©2017 Exar Corporation
www.exar.com
48720 Kato Road
Fremont, CA 94538
USA
Tel.: +1 (510) 668-7000
Fax: +1 (510) 668-7001
Email: serialtechsupport@exar.com
Ordering Information(1)
Part Number Operating
Temperature Range Lead-Free Package Packaging
Method
XR33052ID-F -40°C to 85°C
Yes(2)
8-pin SOIC
Tube
XR33052IDTR-F Reel
XR33052HD-F -40°C to 105°C Tube
XR33052HDTR-F Reel
XR33053ID-F -40°C to 85°C
14-pin SOIC
Tube
XR33053IDTR-F Reel
XR33053HD-F -40°C to 105°C Tube
XR33053HDTR-F Reel
XR33055ID-F -40°C to 85°C
8-pin SOIC
Tube
XR33055IDTR-F Reel
XR33055HD-F -40°C to 105°C Tube
XR33055HDTR-F Reel
XR33058ID-F -40°C to 85°C
8-pin SOIC
Tube
XR33058IDTR-F Reel
XR33058HD-F -40°C to 105°C Tube
XR33058HDTR-F Reel
XR33052IDEVB
XR33052HDEVB
XR33053IDEVB
XR33053HDEVB
XR33055IDEVB
XR33055HDEVB
XR33058IDEVB
XR33058HDEVB
Evaluation Board
NOTE:
1. Refer to www.exar.com/XR33052, www.exar.com/XR33053, www.exar.com/XR33055, www.exar.com/XR33058 for most up-to-date Ordering Information.
2. Visit www.exar.com for additional information on Environmental Rating.
Revision History
Revision Date Description
1A Jan 2016 Initial release of XR33053
2A July 2016 Add XR33052, XR33055 and XR33058
2B Feb 2017 Added missing connection from pin 2 to receiver, page 10
The content of this document is furnished for informational use only, is subject to change without
notice, and should not be construed as a commitment by MaxLinear, Inc.. MaxLinear, Inc. assumes
no responsibility or liability for any errors or inaccuracies that may appear in the informational content
contained in this guide. Complying with all applicable copyright laws is the responsibility of the user.
Without limiting the rights under copyright, no part of this document may be reproduced into, stored in,
or introduced into a retrieval system, or transmitted in any form or by any means (electronic, mechanical,
photocopying, recording, or otherwise), or for any purpose, without the express written permission of
MaxLinear, Inc.
Maxlinear, Inc. does not recommend the use of any of its products in life support applications where
the failure or malfunction of the product can reasonably be expected to cause failure of the life support
system or to significantly affect its safety or effectiveness. Products are not authorized for use in such
applications unless MaxLinear, Inc. receives, in writing, assurances to its satisfaction that: (a) the risk
of injury or damage has been minimized; (b) the user assumes all such risks; (c) potential liability of
MaxLinear, Inc. is adequately protected under the circumstances.
MaxLinear, Inc. may have patents, patent applications, trademarks, copyrights, or other intellectual
property rights covering subject matter in this document. Except as expressly provided in any written
license agreement from MaxLinear, Inc., the furnishing of this document does not give you any license
to these patents, trademarks, copyrights, or other intellectual property.
Company and product names may be registered trademarks or trademarks of the respective owners
with which they are associated.
© 2017 MaxLinear, Inc. All rights reserved
