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PI3L500-A
3.3V, 8-Channel, 2:1 Mux/DeMux Gigabit Ethernet LAN Switch with Single Enable and Enhanced ESD Protection
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-tochannel 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.
Features
* * * * * * * * * RON is 4 typical Low bit-to-bit skew: 200ps Low Crosstalk: -22dB @ 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
Note: 1. IEC 61000-4-2
Block Diagram
A0 A1
0B1 1B1 0B2 1B2
Pin Description
2LED1 2LED2
51
LED2
GND
GND
56
55
54
53
52
50
A6 A7
6B1 7B1 6B2 7B2
LEDX
XLED1
XLED2
GND A0 A1 VDD N.C. GND A2 A3 GND VDD A4 A5 GND A6 A7 GND SEL VDD LED0 LED1
49
GND
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29
VDD
VDD
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
0B1 1B1 0B2 1B2
GND
2B1 3B1 2B2 3B2
GND VDD
4B1 5B1 4B2 5B2
GND
6B1 7B1 6B2 7B2
21
22
23
24
25
26
27
GND
GND
0LED1
1LED1
0LED2
SEL
1LED2
GND
VDD
28
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PS8803
12/13/05
PI3L500-A 3.3V, 8-Channel, 2:1 Mux/DeMux Gigabit Ethenet LAN Switch w/Single Enable and Enhanced ESD Protection Pin Description
Pin Name AX
XBY
Truth Table
Description DeMux Inputs Mux Inputs LED Demux Inputs LED Mux Inputs Ground Power Select SEL L H Function AX to XB1; LEDZ to ZLED1 AX to XB2; LEDZ to ZLED2
LEDZ
ZLEDY
GND VCC SEL
Maximum Ratings
(Above which useful life may be impaired. For user guidelines, not tested.) Storage Temperature........................................................ -65C to +150C 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 specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
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PS8803
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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 = -40C to +85C, VCC = 3.3V 10%) Paramenter VIH VIL VIK IIH IIL RON RFLAT(ON) RON Description Input HIGH Voltage Input LOW Voltage Clamp Diode Voltage Input HIGH Current Input LOW Current Switch On-Resistance(3) On-Resistance Flatness(3) Test Conditions(1) Guaranteed HIGH level (Control Pins) Guaranteed LOW level (Control Pins) VCC = Max., IIN = -18mA VCC = Max., VIN = VCC VCC = Max., VIN = GND VCC = Min., 1.5V VIN VCC IIN = -40mA VCC = Min., VIN @ 1.5V and VCC IIN = -40mA Min. 2.0 -0.5 - - - - - - Typ.(2) - - -0.7 - - 4.0 0.5 0.4 Max. - 0.8 -1.2 5 5 6.5 - 1.0 A V Units
On-Resistance match from center VCC = Min., 1.5V VIN VCC ports to any other port(3) IIN = -40mA
DC Electrical Characteristics for 10/100 Base-T Ethernet Switching over Operating Range
(TA = -40C to +85C, VCC = 3.3V 10%) Paramenter VIH VIL VIK IIH IIL RON RFLAT(ON) RON Description Input HIGH Voltage Input LOW Voltage Clamp Diode Voltage Input HIGH Current Input LOW Current Switch On-Resistance(3) On-Resistance Flatness(3) Test Conditions(1) Guaranteed HIGH level (Control Pins) Guaranteed LOW level (Control Pins) VCC = Max., IIN = -18mA VCC = Max., VIN = VCC VCC = Max., VIN = GND VCC = Min., 1.25V VIN VCC IIN = -10mA to -30mA VCC = Min., VIN @ 1.25V and VCC IIN = -10mA to -30mA Min. 2.0 -0.5 - - - - - - Typ.(2) - - -0.7 - - 4.0 0.5 0.4 Max. - 0.8 -1.2 5 5 6.5 - 1.0 A V Units
On-Resistance match from cen- VCC = Min., 1.25V VIN VCC IIN = ter ports to any other port(3) -10mA to -30mA
Capacitance (TA = 25C, f = 1MHz)
Parameters(4) CIN COFF(B1, B2) CON(A/B) Description Input Capacitance Port B Capacitance, Switch OFF A/B Capacitance, Switch ON
Test Conditions(1) VIN = 0V
Typ. 2.0 4.0 10.0
Max. 3.0 6.0 11.0
Units pF
Notes: 1. For max. or min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 3.3V, TA = 25C 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.
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PS8803
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PI3L500-A 3.3V, 8-Channel, 2:1 Mux/DeMux Gigabit Ethenet LAN Switch w/Single Enable and Enhanced ESD Protection Power Supply Characteristics
Parameters ICC Description Quiescent Power Supply Current
Test Conditions(1) VCC = Max., VIN = GND or VCC
Min. --
Typ.(2) 0.5
Max. 3.5
Units mA
Dynamic Electrical Characteristics Over the Operating Range (TA = -40C to +85C,
Parameter XTALK OIRR BW Crosstalk(3) OFF Isolation(3) Bandwidth -3dB(3) Description Test Conditions(1) RL = 100, f = 250MHz RL = 100
VCC = 3.3V 10%, GND = 0V)
Min. -- -- --
Typ.(2) -27 -32 350
Max. -- -- --
Units dB MHz
Switching Characteristics
Paramenter tPD tPZH, tPZL tPHZ, tPLZ tSK(o) tSK(p) Propagation Delay(3,4) Description Line Enable Time - SEL to AN, BN Line Disable Time - SEL to AN, BN Output Skew between center port (A4 to A5) to any other port(3) ) (3) Min. - 0.5 0.5 - - Typ.(2) 0.25 - - 0.1 0.1 15.0 9.0 0.2 0.2 ns Max. Units
Skew between opposite transitions of the same output (tPHL - tPLH
Notes: 1. For max. or min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 3.3V, TA = 25C 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.
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PS8803
12/13/05
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
6.0V
VCC
200-ohm
Pulse Generator
Switch Positions
Test tPLZ, tPZL (output on B-side) 6.0V GND Open
200-ohm
VIN
D.U.T
VOUT 10pF CL
Switch
RT
tPHZ, tPZH (output on B-side) Prop Delay
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
HP4195A
S1
R1
T1
VCC
HP11667A
D.U.T
10pF 50-ohm
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PS8803
12/13/05
PI3L500-A 3.3V, 8-Channel, 2:1 Mux/DeMux Gigabit Ethenet LAN Switch w/Single Enable and Enhanced ESD Protection Switching Waveforms
SEL
2.5V
1.25V
3.5V Input tPLH 2.5V 2.5V tPHL 2.5V 2.5V
1.25V 0V
1.5V
Output
tPZL
VDD/2
tPLZ
VOH
Output
VOH
VOL +0.3V
tPHZ
tPZH
VDD/2
VOL
VOL
Output
VOH -0.3V
VOH
VOL
Voltage Waveforms Propagation Delay Times
3.5V 2.5V Data In tPLHX tPHLX
1.5V VOH
Voltage Waveforms Enable and Disable Times
3.5V Input tPLH tPHL 2.5V
1.5V VOH
2.5V Data Out at Channel X
I tSK(o)
VOL VOH
Data Out at Channel Y
tPLHy tPHLy
2.5V
VOL
Output tSK(p) = I tPHL - tPLH I
2.5V
VOL
tSK(o) = I tPLHy - tPLHx I or I tPHLy - tPHLx I
Output Skew - tSK(o)
Pulse Skew - tSK(p)
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 = 50, tR 2.5ns, tF 2.5ns.
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(R) 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
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PS8803
12/13/05
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)
11.000.10
9.50 REF.
5.000.10
3.50 REF.
8.400.10
Pin #1 Corner
Pin #1 Corner
0.20 REF. 0.80 MAX.
0.50 TYP. (56x)
Ordering Information
Ordering Number PI3L500-AZFE Package Code ZF Package Description Pb-free & Green, 56-contact TQFN
Notes: Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ Add 'X' for Tape and Reel
Pericom Semiconductor Corporation * 1-800-435-2336 * www.pericom.com
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PS8803 12/13/05

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