PI3L510 3.3V, 4-Channel, 2:1, Mux/DeMux Fast Ethernet LAN Switch w/ Single Enable Features 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. RON is 4Ω (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) 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 2LED2 VCC GND 1B1 2LED1 A1 GND 0B1 LED2 A0 GND Pin Description VCC Block Diagram 36 35 34 33 32 31 30 29 A2 2B1 GND 3 26 1B1 A2 4 25 A3 3B1 0B2 A3 5 24 1B2 2B2 GND 6 23 GND SEL 7 22 2B1 VCC 8 21 3B1 LED0 9 20 2B2 LED1 10 19 3B2 LEDz zLED1 zLED2 11 12 13 14 15 16 17 18 GND 3B2 VCC 0B1 1LED2 27 GND VCC 2 0LED2 28 A1 1LED1 1 1B2 0LED1 A0 GND 0B2 SEL 07-0077 1 PS8720C 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 LEDZ ZLEDY Truth Table Description SEL Function Demux Inputs L AX to XB1; LEDZ to ZLED1 Mux Inputs H AX to XB2; LEDZ to ZLED2 LED Demux Inputs LED Mux Inputs GND Ground VDD Power SEL Select Maximum Ratings (Above which useful life may be impaired. For user guidelines, not tested.) 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 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 = –40°C to +85°C, VCC = 3.3V ±10%) Description Test Conditions(1) VIH Input HIGH Voltage Guaranteed HIGH level (Control Pins) 2.0 VIL Input LOW Voltage Guaranteed LOW level (Control Pins) –0.5 VIK Clamp Diode Voltage VCC = Max., IIN = –18mA IIH Input HIGH Current VCC = Max., VIN = VCC ±5 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 RFLAT(ON) On-Resistance Flatness(4) VCC = Min., VIN @ 1.25V and VCC, IIN = –10mA to –30mA 0.5 Paramenter ∆RON On-Resistance match from center VCC = Min., 1.25V ≤ VIN ≤ VCC, ports to any other port(4) IIN = –10mA to –30mA Min. Typ.(2) Max. Units 0.8 –0.7 0.4 V –1.2 μA 6.5 Ω 1.0 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 = 25°C 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. 07-0077 2 PS8720c 03/26/07 PI3L510 3.3V, 4-Channel, 2:1, Mux/DeMux Fast Ethernet LAN Switch w/ Single Enable Capacitance (TA = 25°C, f = 1MHz) Parameters(1) Description CIN Input Capacitance COFF(B1, B2) Port B Capacitance, Switch OFF CON(A/B) A/B Capacitance, Switch ON Test Conditions VIN = 0V Typ. Max. 2.0 3.0 4.0 6.0 10.0 11.0 Units pF Notes: 1. This parameter is determined by device characterization but is not production tested. Power Supply Characteristics Parameters (3) ICC Test Conditions(1) Description Quiescent Power Supply Current Min. VCC = Max., VIN = GND or VCC Typ.(2) Max. Units 0.5 3.5 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 = 25°C 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 = –40°C to +85°C, Parameter (1) VCC = 3.3V ±10%, GND = 0V) Min. Typ.(2) Max. Units Description Test Conditions Crosstalk RL = 100Ω, f = 250 MHz –27 dB OIRR OFF Isolation RL = 100Ω, f = 250 MHz –32 dB BW Bandwidth –3dB RL = 100Ω 350 MHz XTALK 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 Description Propagation Min. Delay(2,3) tPZH, tPZL Line Enable Time - SEL to AN, BN tPHZ, tPLZ Line Disable Time - SEL to AN, BN Typ.(1) Max. Units 0.25 port(2) tSK(o) Output Skew between center port to any other tSK(p) Skew between opposite transitions of the same output (tPHL - tPLH) (2) 0.5 15.0 0.5 9.0 0.1 0.2 0.1 0.2 ns 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. 07-0077 3 PS8720c 03/26/07 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 VOUT VIN D.U.T 10pF CL RT 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 Switch tPLZ, tPZL (output on I-side) 6.0V tPHZ, tPZH (output on I-side) GND Prop Delay Open Test Circuit for Dynamic Electrical Characteristics HP4195A R1 S1 VCC T1 D.U.T. HP11667A 10pF 07-0077 4 50-ohm PS8720c 03/26/07 PI3L510 3.3V, 4-Channel, 2:1, Mux/DeMux Fast Ethernet LAN Switch w/ Single Enable Switching Waveforms 2.5V SEL 2.5V Input 1.25V 1.25V 3.5V 0V 2.5V 1.5V tPLH Output tPHL tPZL tPLZ VDD/2 VOH Output 2.5V tPHZ tPZH 2.5V VOH VOL +0.3V VOL VDD/2 VOH –0.3V VOL VOH VOL Output Voltage Waveforms Enable and Disable Times Voltage Waveforms Propagation Delay Times 3.5V 2.5V Data In 1.5V tPLHX 3.5V tPHLX 2.5V VOH Input 1.5V 2.5V Data Out at Channel X I tPLH tPHL VOL VOH tSK(o) VOH 2.5V Output VOL 2.5V Data Out at Channel Y tSK(p) = I tPHL – tPLH I VOL tPLHy tPHLy tSK(o) = I tPLHy – tPLHx I or I tPHLy – tPHLx I Pulse Skew - tSK(p) Output Skew - tSK(o) • • • • 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® 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 07-0077 5 PS8720c 03/26/07 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 Package Description ZF 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 07-0077 6 PS8720c 03/26/07