INDUSTRIAL TEMPERATURE RANGE
IDT74ALVC162245
3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
1APRIL 1999INDUSTRIAL TEMPERATURE RANGE
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
© 1999 Integrated Device Technology, Inc. DSC-4605/1
FEATURES:
• 0.5 MICRON CMOS Technology
• Typical tSK(o) (Output Skew) < 250ps
• ESD > 2000V per MIL-STD-883, Method 3015; > 200V using
machine model (C = 200pF, R = 0)
•VCC = 3.3V ± 0.3V, Normal Range
•VCC = 2.7V to 3.6V, Extended Range
•VCC = 2.5V ± 0.2V
• CMOS power levels (0.4µµ
µµ
µ W typ. static)
• Rail-to-Rail output swing for increased noise margin
• Available in SSOP, TSSOP, and TVSOP packages
FUNCTIONAL BLOCK DIAGRAM
APPLICATIONS:
• 3.3V high speed systems
• 3.3V and lower voltage computing systems
DRIVE FEATURES:
• Balanced Output Drivers: ±12mA (A port)
• High Output Drivers: ±24mA (B port)
IDT74ALVC162245
3.3V CMOS 16-BIT
BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
1DIR
1A1
1A2
1A3
1A4
1A5
1A6
1A7
1A8
1B8
1B7
1B6
1B5
1B4
1B3
1B2
1B1
1OE
2DIR
2A1
2A2
2A3
2A4
2A5
2A6
2A7
2A8
2B8
2B7
2B6
2B5
2B4
2B3
2B2
2B1
2OE
1
47
46
44
43
41
40
38
37
12
11
9
8
6
5
3
2
48
24
36
35
33
32
30
29
27
26
23
22
20
19
17
16
14
13
25
DESCRIPTION:
This 16-bit bus transceiver is built using advanced dual metal CMOS
technology. The ALVC162245 is designed for asynchronous communica-
tion between data buses. The control-function implementation minimizes
external timing requirements.
This device can be used as two 8-bit transceivers or one 16-bit
transceiver. It allows data transmission from the A bus to the B bus or from
the B bus to the A bus, depending on the logic level at the direction-control
(DIR) input. The output-enable (OE) input can be used to disable the device
so that the buses are effectively isolated.
The ALVC162245 has series resistors in the device output structure of
the “A” port which will significantly reduce line noise when used with light
loads. This driver has been designed to drive ±12mA at the designated
threshold levels. The “B” port has a ±24mA driver.
INDUSTRIAL TEMPERATURE RANGE
2
IDT74ALVC162245
3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
SSOP/ TSSOP/ TVSOP
TOP VIEW
PIN CONFIGURATION
NOTE:
1 . H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
Inputs
xOE xDIR Outputs
L L B data to A bus
L H A data to B bus
H X Isolation
FUNCTION T ABLE (EACH 8-BIT SECTION)(1)
Pin Names Description
xOE Output Enable Inputs (Active LOW)
DIR Direction Control Inputs
xAx Side A Inputs or 3-State Outputs
xBx Side B Inputs or 3-State Outputs
PIN DESCRIPTION
NOTE:
1. As applicable to the device type.
Symbol Parameter(1) Conditions Typ. Max. Unit
CIN Input Capacitance VIN = 0V 5 7 pF
COUT Output Capacitance VOUT = 0V 7 9 pF
COUT I/O Port Capacitance VIN = 0V 7 9 pF
CAPACITANCE (TA = +25°C, F = 1.0MHz)
Symbol Description Max Unit
VTERM(2) Terminal Voltage with Respect to GND –0.5 to +4.6 V
VTERM(3) Terminal Voltage with Respect to GND –0.5 to VCC+0.5 V
TSTG Storage Temperature –65 to +150 °C
IOUT DC Output Current –50 to +50 mA
IIK Continuous Clamp Current, ±50 mA
VI < 0 or VI > VCC
IOK Continuous Clamp Current, VO < 0 –50 mA
ICC Continuous Current through each ±1 0 0 mA
ISS VCC or GND
ABSOLUTE MAXIMUM RATINGS(1)
NOTES:
1 . Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause
permanent damage to the device. This is a stress rating only and functional operation
of the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect reliability.
2. VCC terminals.
3. All terminals except VCC.
1DIR
1B1
GND
VCC
GND
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
40
41
42
43
44
45
46
47
48
1
1B2
1B3
1B4
1B5
1B6
1B7
1B8
2B1
2B2
GND
2B3
2B4
2B6
2B5
VCC
GND
2B8
2B7
2DIR
1OE
1A1
GND
VCC
GND
1A2
1A3
1A4
1A5
1A6
1A7
1A8
2A1
2A2
GND
2A3
2A4
2A6
2A5
VCC
GND
2A8
2A7
2OE
INDUSTRIAL TEMPERATURE RANGE
IDT74ALVC162245
3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
3
Symbol Parameter Test Conditions Min. Typ.(1) Max. Unit
VIH Input HIGH Voltage Level VCC = 2.3V to 2.7V 1.7 — — V
VCC = 2.7V to 3.6V 2 — —
VIL Input LOW Voltage Level VCC = 2.3V to 2.7V — — 0.7 V
VCC = 2.7V to 3.6V — — 0.8
IIH Input HIGH Current VCC = 3.6V VI = VCC ——±5µA
IIL Input LOW Current VCC = 3.6V VI = GND — — ±5µA
IOZH High Impedance Output Current VCC = 3.6V VO = VCC ——±10 µA
IOZL (3-State Output pins) VO = GND — — ±10
VIK Clamp Diode Voltage VCC = 2.3V, IIN = –18mA — –0.7 –1.2 V
VHInput Hysteresis VCC = 3.3V — 100 — mV
ICCL Quiescent Power Supply Current VCC = 3.6V — 0.1 40 µA
ICCH VIN = GND or VCC
ICCZ
∆ICC Quiescent Power Supply Current One input at VCC - 0.6V, other inputs at VCC or GND — — 750 µA
Variation
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Following Conditions Apply Unless Otherwise Specified:
Operating Condition: TA = –40°C to +85°C
NOTE:
1. VIH and VIL must be within the min. or max. range shown in the DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE table for the appropriate VCC range.
TA = – 40°C to + 85°C.
OUTPUT DRIVE CHARACTERISTICS (A PORT)
Symbol Parameter Test Conditions(1) Min. Max. Unit
VOH Output HIGH Voltage VCC = 2.3V to 3.6V IOH = – 0.1mA VCC – 0.2 — V
VCC = 2.3V IOH = – 4mA 1.9 —
IOH = – 6mA 1.7 —
VCC = 2.7V IOH = – 4mA 2.2 —
IOH = – 8mA 2 —
VCC = 3V IOH = – 6mA 2.4 —
IOH = – 12mA 2 —
VOL Output LOW Voltage VCC = 2.3V to 3.6V IOL = 0.1mA — 0.2 V
VCC = 2.3V IOL = 4mA — 0.4
IOL = 6mA — 0.55
VCC = 2.7V IOL = 4mA — 0.4
IOL = 8mA — 0.6
VCC = 3V IOL = 6mA — 0.55
IOL = 12mA — 0 .8
NOTE:
1. Typical values are at VCC = 3.3V, +25°C ambient.
INDUSTRIAL TEMPERATURE RANGE
4
IDT74ALVC162245
3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
NOTE:
1. VIH and VIL must be within the min. or max. range shown in the DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE table for the appropriate VCC range.
TA = – 40°C to + 85°C.
OUTPUT DRIVE CHARACTERISTICS (B PORT)
Symbol Parameter Test Conditions(1) Min. Max. Unit
VOH Output HIGH Voltage VCC = 2.3V to 3.6V IOH = – 0.1mA VCC – 0.2 — V
VCC = 2.3V IOH = – 6mA 2 —
VCC = 2.3V IOH = – 12mA 1 .7 —
VCC = 2.7V 2.2 —
VCC = 3V 2.4 —
VCC = 3V IOH = – 24mA 2 —
VOL Output LOW Voltage VCC = 2.3V to 3.6V IOL = 0.1mA — 0.2 V
VCC = 2.3V IOL = 6mA — 0.4
IOL = 12mA — 0 .7
VCC = 2.7V IOL = 12mA — 0 .4
VCC = 3V IOL = 24mA — 0.55
OPERATING CHARACTERISTICS, TA = 25°C
VCC = 2.5V ± 0.2V VCC = 3.3V ± 0.3V
Symbol Parameter Test Conditions Typical Typical Unit
CPD Power Dissipation Capacitance Outputs enabled CL = 0pF, f = 10Mhz 23 30 pF
CPD Power Dissipation Capacitance Outputs disabled 4 5
INDUSTRIAL TEMPERATURE RANGE
IDT74ALVC162245
3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
5
SWITCHING CHARACTERISTICS (A PORT)(1)
VCC = 2.5V ± 0.2V VCC = 2.7V VCC = 3.3V ± 0.3V
Symbol Parameter Min. Max. Min. Max. Min. Max. Unit
tPLH Propagation Delay 1 4.9 —4.7 1 4.2 ns
tPHL xBx to xAx
tPZH Output Enable Time 1 6.8 —6.7 1 5.6 ns
tPZL xOE to xAx
tPHZ Output Disable Time 1 6.3 —5.7 1 5.5 ns
tPLZ xOE to xAx
tSK(o) Output Skew(2) —— — — — 500 ps
NOTES:
1. See TEST CIRCUITS AND WAVEFORMS. TA = – 40°C to + 85°C.
2. Skew between any two outputs of the same package and switching in the same direction.
SWITCHING CHARACTERISTICS (B PORT)(1)
VCC = 2.5V ± 0.2V VCC = 2.7V VCC = 3.3V ± 0.3V
Symbol Parameter Min. Max. Min. Max. Min. Max. Unit
tPLH Propagation Delay 1 3.7 —3.6 1 3 ns
tPHL xAx to xBx
tPZH Output Enable Time 1 5.7 —5.4 1 4.4 ns
tPZL xOE to xBx
tPHZ Output Disable Time 1 5.2 —4.6 1 4.1 ns
tPLZ xOE to xBx
tSK(o) Output Skew(2) —— — — — 500 ps
NOTES:
1. See TEST CIRCUITS AND WAVEFORMS. TA = – 40°C to + 85°C.
2. Skew between any two outputs of the same package and switching in the same direction.
INDUSTRIAL TEMPERATURE RANGE
6
IDT74ALVC162245
3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
Open
VLOAD
GND
VCC
Pulse
Generator D.U.T.
500Ω
500Ω
CL
RT
VIN VOUT
(1, 2)
ALVC Link
INPUT
VIH
0V
VOH
VOL
tPLH1
tSK (x)
OUTPUT 1
OUTPUT 2
tPHL1
tSK (x)
tPLH2 tPHL2
VT
VT
VOH
VT
VOL
tSK(x) = tPLH2 - tPLH1 or tPHL2 - tPHL1
ALVC Link
SAME PHASE
INPU T TRANSITION
OPPOSITE PHASE
INPU T TRANSITION
0V
0V
VOH
VOL
tPLH tPHL
tPHL
tPLH
OUTPUT
VIH
VT
VT
VIH
VT
ALVC Link
DATA
INPUT 0V
0V
0V
0V
tREM
TIMING
INPUT
SYNCHRONOUS
CONTROL
tSU tH
tSU tH
VIH
VT
VIH
VT
VIH
VT
VIH
VT
ALVC Link
ASYNCHRONOUS
CONTROL
LOW-HIGH-LOW
PULSE
HIGH-LOW-HIGH
PULSE
VT
tW
VT
ALVC Link
CONTROL
INPUT tPLZ 0V
OUTPUT
NORMALLY
LOW tPZH
0V
SWITCH
CLOSED
OUTPUT
NORMALLY
HIGH
ENABLE DISABLE
SWITCH
OPEN
tPHZ
0V
VOL + VLZ
VOH
VT
VT
tPZL
VLOAD/2 VLOAD/2
VIH
VT
VOL
VOH - VHZ
ALVC Link
TEST CIRCUITS AND WAVEFORMS
Propagation Delay
Test Circuit for All Outputs
Enable and Disable Times
Set-up, Hold, and Release Times
NOTES:
1. For tSK(o) OUTPUT1 and OUTPUT2 are any two outputs.
2. For tSK(b) OUTPUT1 and OUTPUT2 are in the same bank.
DEFINITIONS:
CL = Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.
NOTES:
1. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; tF ≤ 2.5ns; tR ≤ 2.5ns.
2. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; tF ≤ 2ns; tR ≤ 2ns.
Output Skew - tSK(X)
Pulse Width
NOTE:
1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH.
Symbol VCC(1)= 3.3V±0.3V VCC(1)= 2.7V VCC(2)= 2.5V±0.2V Unit
VLOAD 6 6 2 x Vcc V
VIH 2.7 2.7 Vcc V
VT1.5 1.5 Vcc / 2 V
VLZ 300 300 150 mV
VHZ 300 300 150 mV
CL50 50 30 pF
TEST CONDITIONS
SWITCH POSITION
Test Switch
Open Drain
Disable Low VLOAD
Enable Low
Disable High GND
Enable High
All Other Tests Open
INDUSTRIAL TEMPERATURE RANGE
IDT74ALVC162245
3.3V CMOS 16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS
7
ORDERING INFORMATION
IDT XX ALVC XXX XX
Package
Device Type
Temp. Range
PV
PA
PF
162
74
Shrink Small Outline Package
Thin Shrink Sm all Outline Package
Thin Very Sm all Outline Package
16-Bit Bus Transceiver w ith 3-State Outputs
– 4 0 ° C to + 85° C
XXX
FamilyBus-Hold
245
No Bus-Hold
Double-Density with Resistors, ±12m A (A port)
±2 4 mA ( B po r t)
Blank
CORPORATE HEADQUARTERS for SALES: for Tech Support:
2975 Stender Way 800-345-7015 or 408-727-6116 logichelp@idt.com
Santa Clara, CA 95054 fax: 408-492-8674 (408) 654-6459
www.idt.com
