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PI3L510
3.3V, 4-Channel, 2:1, Mux/DeMux Fast Ethernet LAN Switch w/ Single Enable
Features
* * * * * * * * * * * * RON is 4 (typical) Low bit-to-bit skew: 200ps Low Crosstalk: -27dB @ 250 MHz Near-Zero propagation delay: 250ps Switching speed: 9ns Channel On Capacitance: 10pF (typical) Live Insertion Capable Status Indicator LEDs switched with Ethernet Pairs VCC Operating Range: +3.0V to +3.6V >3kV ESD protection (human body model >350 MHz bandwidth (or data frequency) Packaging (Pb-free & Green available): - 36-contact TQFN (ZF)
Description
The PI3L510 is a 8- to 4-Channel 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 Fast 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-tobit skew, high channel-to-channel noise isolation and is compatible with various standards, such as 10/100 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.
Applications
* Dual Physical Layer Device sharing to one interface connector * Routes signals for 10/100 Mbit Ethernet
Block Diagram
A0 A1
0B1 1B1 0B2 1B2
Pin Description
2LED1 2LED2 LED2
GND
GND
36
35
34
33
32
31
30
29 28 27 26 25 24 23 22 21 20 19
A0 A1 GND A2 A3 GND SEL VCC
GND
VCC
VCC
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
VCC 0B1 1B1 0B2 1B2 GND 2B1 3B1 2B2 3B2
A2 A3
2B1 3B1 2B2 3B2
LEDz
zLED1
LED0 LED1
1LED2
0LED1
1LED1
0LED2
GND
GND
SEL
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VCC
PS8720C
GND
zLED2
03/26/07
PI3L510 3.3V, 4-Channel, 2:1, Mux/DeMux Fast Ethernet LAN Switch w/ Single Enable
Pin Description
Pin Name AX
X BY
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 VDD 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.
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(4) 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 4.0 0.5 0.4 1.0 Min. 2.0 -0.5 -0.7 0.8 -1.2 5 5 6.5 A V Typ.(2) Max. Units
On-Resistance match from center VCC = Min., 1.25V VIN VCC, ports to any other port(4) IIN = -10mA to -30mA
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 AN and BN pins at indicated current through the switch. ON resistance is determined by the lower of the voltages on the two (AN & BN) pins. 4. This parameter is determined by device characterization but is not production tested.
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PI3L510 3.3V, 4-Channel, 2:1, Mux/DeMux Fast Ethernet LAN Switch w/ Single Enable
Capacitance (TA = 25C, f = 1MHz)
Parameters(1) CIN COFF(B1, B2) CON(A/B) Description Input Capacitance Port B Capacitance, Switch OFF A/B Capacitance, Switch ON VIN = 0V Test Conditions Typ. 2.0 4.0 10.0 Max. 3.0 6.0 11.0 pF Units
Notes: 1. This parameter is determined by device characterization but is not production tested.
Power Supply Characteristics
Parameters ICC
(3)
Description Quiescent Power Supply Current
Test Conditions(1) VCC = Max., VIN = GND or VCC
Min.
Typ.(2) 0.5
Max. 3.5
Units mA
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. Per TTL driven input (control inputs only); A and B pins do not contribute to ICC.
Dynamic Electrical Characteristics Over the Operating Range (TA = -40C to +85C,
Parameter XTALK OIRR BW Description Crosstalk OFF Isolation Bandwidth -3dB Test Conditions
(1)
VCC = 3.3V 10%, GND = 0V)
Min.
Typ.(2) -27 -32 350
Max.
Units dB dB MHz
RL = 100, f = 250 MHz RL = 100, f = 250 MHz RL = 100
Notes: 1. For max. or min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type 2. Guaranteed by design.
Switching Characteristics
Paramenter tPD tPZH, tPZL tPHZ, tPLZ tSK(o) tSK(p) Description Propagation Delay(2,3) 0.5 0.5 port(2) 0.1 0.1 Line Enable Time - SEL to AN, BN Line Disable Time - SEL to AN, BN Output Skew between center port to any other Skew between opposite transitions of the same output (tPHL - tPLH) (2) Min. Typ.(1) 0.25 15.0 9.0 0.2 0.2 ns Max. Units
Notes: 1. Guaranteed by design. 2. 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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PS8720c
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PI3L510 3.3V, 4-Channel, 2:1, Mux/DeMux Fast Ethernet LAN Switch w/ Single Enable Test Circuit for Electrical Characteristics(1)
6.0V VCC
200-ohm Pulse Generator VIN VOUT D.U.T RT 10pF CL 200-ohm
Notes: * CL = Load capacitance: includes jig and probe capacitance. * RT = Termination resistance should be equal to ZOUT of the Pulse Generator
Switch Positions
Test tPLZ, tPZL (output on I-side) tPHZ, tPZH (output on I-side) Prop Delay Switch 6.0V GND Open
Test Circuit for Dynamic Electrical Characteristics
HP4195A S1 R1 T1
VCC HP11667A
D.U.T. 10pF 50-ohm
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PI3L510 3.3V, 4-Channel, 2:1, Mux/DeMux Fast Ethernet LAN Switch w/ Single Enable
Switching Waveforms
SEL
2.5V 1.25V tPZL VDD/2 1.25V 0V
3.5V Input tPLH Output 2.5V 2.5V 2.5V 1.5V tPHL VOH 2.5V VOL
Output tPZH Output
tPLZ VOL +0.3V tPHZ VDD/2 VOH -0.3V
VOH VOL VOH VOL
Voltage Waveforms Propagation Delay Times
3.5V 2.5V Data In tPLHX tPHLX VOH 2.5V Data Out at Channel X I VOL tSK(o) VOH 2.5V Data Out at Channel Y tPLHy tPHLy tSK(o) = I tPLHy - tPLHx I or I tPHLy - tPHLx I VOL 1.5V
Voltage Waveforms Enable and Disable Times
3.5V 2.5V Input 1.5V tPLH tPHL VOH Output tSK(p) = I tPHL - tPLH I 2.5V VOL
Output Skew - tSK(o)
* * * *
Pulse Skew - tSK(p)
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 10 MHz, ZO = 50-ohm, tR 2.5ns, tF 2.5ns. The outputs are measured one at a time with one transition per measurement.
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 the control pin(s) 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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PI3L510 3.3V, 4-Channel, 2:1, Mux/DeMux Fast Ethernet LAN Switch w/ Single Enable
Packaging Mechanical: 36-Contact TQFN (ZF)
Ordering Information
Ordering Number PI3L510ZFE Package Code ZF Package Description Pb-free & Green, 36-contact TQFN
Notes: * Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ * E = Pb-free & Green * Adding an X suffix = Tape/Reel
Pericom Semiconductor Corporation * 1-800-435-2336 * www.pericom.com
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PS8720c
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