1PS8803A 06/08/10
Features
RON is 4Ω typical
Low bit-to-bit skew: 200ps
Low Crosstalk: –35dB @ 250MHz
Near-Zero propagation delay: 250ps
Switching speed: 9ns
Channel On capacitance: 10pF (typical)
Status Indicator LEDs Switched with Ethernet pairs
VCC Operating Range: +3.0V to +3.6V
Enhanced ESD Protection:
– 8kV (contact)(1)
– Switch pins: 1.1kV (machine model),
12kV (human body model)
>550 MHz bandwidth (or data frequency)
Packaging:
– Pb-free and Green, 56-contact TQFN (ZF)
Applications
Dual Physical Layer Device sharing to one interface
connector
Routes signals for 10/100/1000 Mbit Ethernet
Description
The PI3L500-A is a 8-Channel 2:1 multiplexer/demultiplexer LAN
Switch with Hi-Z outputs. Industry leading advantages include a
propagation delay of less than 250ps, resulting from its low channel
resistance and I/O capacitance. The device multiplexes differential
outputs from a Gigabit Ethernet transceiver (PHY) device to one
of two corresponding B1 or B2 outputs. The switch is bidirectional
and offers little or no attenuation of the high-speed signals at the
outputs. It is designed for low bit-to-bit skew, high channel-to-
channel noise isolation and is compatible with various standards,
such as 10/100/1000 Base-T (Ethernet).
Generally, this part can be used to replace mechanical relays in
low-voltage LAN applications that interface a physical layer over
CAT 5 or CAT 6 unshielded twisted pair cable through an isolation
transformer.
Note: 1. IEC 61000-4-2
Block Diagram Pin Description
PI3L500-A
3.3V, 8-Channel, 2:1 Mux/DeMux
Gigabit Ethernet LAN Switch with Single Enable
and Enhanced ESD Protection
GND
A0
A1
VCC
N.C.
GND
A2
A3
GND
VCC
A4
A5
GND
A6
A7
GND
SEL
VCC
LED0
LED1
0B1
1B1
0B2
1B2
GND
2B1
3B1
2B2
3B2
GND
VCC
4B1
5B1
4B2
5B2
GND
6B1
7B1
6B2
7B2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
VCC
GND
LED2
GND
2LED1
2LED2
VCC
GND
GND
0LED1
1LED1
GND
0LED2
1LED2
VCC
GND
21
22
23
24
25
26
27
28
56
55
54
53
52
51
50
49
SEL
A7
A6
A1
A0
1B1
0B1
1B2
0B2
7B1
6B1
7B2
6B2
LEDXXLED1
XLED2
10-0178
2PS8803A 06/08/10
PI3L500-A
3.3V, 8-Channel, 2:1 Mux/DeMux Gigabit Ethenet LAN
Switch w/Single Enable and Enhanced ESD Protection
Storage Temperature ........................................................ –65°C to +150°C
Supply Voltage to Ground Potential ........................... –0.5V to +4.0V
DC Input Voltage ................................................................ –0.5V to +5.5V
DC Output Current .......................................................................... 120mA
Power Dissipation .............................................................................. 0.5W
Note:
Stresses greater than those listed under 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
specication is not implied. Exposure to absolute maximum rating conditions for extended
periods may affect reliability.
Maximum Ratings
(Above which useful life may be impaired. For user guidelines, not tested.)
Pin Description
Pin Name Description
AXDeMux Inputs
XBYMux Inputs
LEDZLED Demux Inputs
ZLEDYLED Mux Inputs
GND Ground
VCC Power
SEL Select
Truth Table
SEL Function
L AX to XB1; LEDZ to ZLED1
H AX to XB2; LEDZ to ZLED2
10-0178
3PS8803A 06/08/10
PI3L500-A
3.3V, 8-Channel, 2:1 Mux/DeMux Gigabit Ethenet LAN
Switch w/Single Enable and Enhanced ESD Protection
DC Electrical Characteristics for 1000 Base-T Ethernet Switching over Operating Range
(TA = –40°C to +85°C, VCC = 3.3V ±10%)
Paramenter Description Test Conditions(1) Min. Typ.(2) Max. Units
VIH Input HIGH Voltage Guaranteed HIGH level (Control Pins) 2.0
VVIL Input LOW Voltage Guaranteed LOW level (Control Pins) –0.5 0.8
VIK Clamp Diode Voltage VCC = Max., IIN = –18mA –0.7 –1.2
IIH Input HIGH Current VCC = Max., VIN = VCC ±5 µA
IIL Input LOW Current VCC = Max., VIN = GND ±5
RON Switch On-Resistance(3) VCC = Min., 1.5V ≤ VIN ≤ VCC
IIN = –40mA 4.0 6.5
ΩRFLAT(ON) On-Resistance Flatness(3) VCC = Min., VIN @ 1.5V and VCC
IIN = –40mA 0.5
ΔRON On-Resistance match from center
ports to any other port(3)
VCC = Min., 1.5V ≤ VIN ≤ VCC
IIN = –40mA 0.4 1.0
DC Electrical Characteristics for 10/100 Base-T Ethernet Switching over Operating Range
(TA = –40°C to +85°C, VCC = 3.3V ±10%)
Paramenter Description Test Conditions(1) Min. Typ.(2) Max. Units
VIH Input HIGH Voltage Guaranteed HIGH level (Control Pins) 2.0
VVIL Input LOW Voltage Guaranteed LOW level (Control Pins) –0.5 0.8
VIK Clamp Diode Voltage VCC = Max., IIN = –18mA –0.7 –1.2
IIH Input HIGH Current VCC = Max., VIN = VCC ±5 µA
IIL Input LOW Current VCC = Max., VIN = GND ±5
RON Switch On-Resistance(3) VCC = Min., 1.25V ≤ VIN ≤ VCC IIN =
–10mA to –30mA 4.0 6.5
ΩRFLAT(ON) On-Resistance Flatness(3) VCC = Min., VIN @ 1.25V and VCC IIN
= –10mA to –30mA 0.5
∆RON On-Resistance match from cen-
ter ports to any other port(3)
VCC = Min., 1.25V ≤ VIN ≤ VCC IIN =
–10mA to –30mA 0.4 1.0
Notes:
1. For max. or min. conditions, use appropriate value specied under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 3.3V, TA = 25°C ambient and maximum loading.
3. Measured by the voltage drop between A and B pins at indicated current through the switch. ON resistance is determined by the lower of the
voltages on the two (A & B) pins.
4. This parameter is determined by device characterization but is not production tested.
Capacitance (TA = 25°C, f = 1MHz)
Parameters(4) Description Test Conditions(1) Typ. Max. Units
CIN Input Capacitance
VIN = 0V
2.0 3.0
pFCOFF(B1, B2) Port B Capacitance, Switch OFF 4.0 6.0
CON(A/B) A/B Capacitance, Switch ON 10.0 11.0
10-0178
4PS8803A 06/08/10
PI3L500-A
3.3V, 8-Channel, 2:1 Mux/DeMux Gigabit Ethenet LAN
Switch w/Single Enable and Enhanced ESD Protection
Notes:
1. For max. or min. conditions, use appropriate value specied under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 3.3V, TA = 25°C ambient and maximum loading..
3. Guaranteed by design.
4. The bus switch contributes no propagational delay other than the RC delay of the ON resistance of the switch and the load capacitance. The
time constant for the switch alone is of the order of 0.25ns for 10pF load. Since this time constant is much smaller than the rise/fall times of
typical driving signals, it adds very little propagational delay to the system. Propagational delay of the bus switch when used in a system is
determined by the driving circuit on the driving side of the switch and its interactions with the load on the driven side.
Switching Characteristics
Power Supply Characteristics
Parameters Description Test Conditions(1) Min. Typ.(2) Max. Units
ICC Quiescent Power Supply Current VCC = Max., VIN = GND or VCC 0.5 3.5 mA
Dynamic Electrical Characteristics Over the Operating Range (TA = –40°C to +85°C, VCC = 3.3V ±10%, GND = 0V)
Parameter Description Test Conditions(1) Min. Typ.(2) Max. Units
XTALK Crosstalk(3)
RL = 100Ω, f = 250MHz
–35
dB
OIRR OFF Isolation(3) –32
BW Bandwidth –3dB(3) RL = 100Ω 350 MHz
Paramenter Description Min. Typ.(2) Max. Units
tPD Propagation Delay(3,4) 0.25
ns
tPZH, tPZL Line Enable Time - SEL to AN, BN0.5 15.0
tPHZ, tPLZ Line Disable Time - SEL to AN, BN0.5 9.0
tSK(o) Output Skew between center port (A4 to A5) to any other port(3) 0.1 0.2
tSK(p) Skew between opposite transitions of the same output (tPHL - tPLH) (3) 0.1 0.2
10-0178
5PS8803A 06/08/10
PI3L500-A
3.3V, 8-Channel, 2:1 Mux/DeMux Gigabit Ethenet LAN
Switch w/Single Enable and Enhanced ESD Protection
Test Circuit for Electrical Characteristics
Notes:
CL = Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse Generator
Test Circuit for Dynamic Electrical Characteristics
VCC D.U.T
T1R1
S1
HP11667A 50-ohm10pF
HP4195A
Switch Positions
Test Switch
tPLZ, tPZL (output on B-side) 6.0V
tPHZ, tPZH (output on B-side) GND
Prop Delay Open
RT
10pF
CL
VCC
VIN VOUT
200-ohm
200-ohm
6.0V
Pulse
Generator D.U.T
10-0178
6PS8803A 06/08/10
PI3L500-A
3.3V, 8-Channel, 2:1 Mux/DeMux Gigabit Ethenet LAN
Switch w/Single Enable and Enhanced ESD Protection
Voltage Waveforms Propagation Delay Times
Switching Waveforms
Output Skew - tSK(o) Pulse Skew - tSK(p)
Voltage Waveforms Enable and Disable Times
Data In
Data Out
at Channel X
Data Out
at Channel Y
tPLHX tPHLX
3.5V
2.5V
2.5V
2.5V
I
tSK(o) = I tPLHy – tPLHx I or I tPHLy – tPHLx I
tSK(o)
tPLHy tPHLy
VOH
VOL
VOL
VOH
1.5V
Input
Output
tPLH
tSK(p) = I tPHL – tPLH I
tPHL
3.5V
2.5V
2.5V
VOL
VOH
1.5V
tPLZ
1.25V 1.25V
2.5V
VOH
0V
VOL
VDD/2
VDD/2
tPHZ
tPZL
tPZH
Output
Output
VOL +0.3V
VOH –0.3V
VOL
VOH
SEL
Applications Information
Logic Inputs
The logic control inputs can be driven up to +3.6V regardless of the supply voltage. For example, given a +3.3V supply, the output
enables or select pins may be driven low to 0V and high to 3.6V. Driving IN Rail-to-Rail® minimizes power consumption.
Power-Supply Sequencing
Proper power-supply sequencing is advised for all CMOS devices. It is recommended to always apply VCC before applying signals to
the input/output or control pins.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd
Input
t
PLH
2.5V 2.5V
2.5V 2.5V
t
PHL
3.5V
1.5V
Output
V
OH
V
OL
Notes:
Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
All input impulses are supplied by generators having the following characteristics: PRR ≤ MHz, ZO = 50Ω, tR ≤ 2.5ns, tF ≤ 2.5ns.
The outputs are measured one at a time with one transition per measurement.
10-0178
7PS8803A 06/08/10
PI3L500-A
3.3V, 8-Channel, 2:1 Mux/DeMux Gigabit Ethenet LAN
Switch w/Single Enable and Enhanced ESD Protection
Packaging Mechanical: 56-Contact TQFN (ZF)
Pericom Semiconductor Corporation • 1-800-435-2336 www.pericom.com
Notes:
Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
Add 'X' for Tape and Reel
Ordering Information
Ordering Number Package Code Package Description
PI3L500-AZFE ZF Pb-free & Green, 56-contact TQFN
10-0178