PI3USB20LEX PERICOM | Alldatasheet

Document overview

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Technical content

Features

  • RON is 4Ω typical
  • Low bit-to-bit skew: 200ps
  • Low Crosstalk: –27dB @ 250MHz
  • Near-Zero propagation delay: 250ps
  • Switching speed: 9ns
  • Channel On-Capacitance: 6pF (typical)
  • VCC Operating Range: +3.0V to +3.6V
  • ESD>2000V . . . Human Body Model
  • >500 MHz bandwidth (or data frequency)
  • Package (Pb-free & Green available): -16-pin, 173-mil wide plastic TSSOP (L) Application
  • Routes signals for USB 2.0

Description

The PI3USB20 is a 8- to 4-Channel multiplexer/demultiplexer Video 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 USB Host device to one of two corresponding 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 high speed USB 2.0 (480 Mb/s). Block Diagram Pin Description PI3USB20 3.3V , Wide Bandwidth, 4-Channel, 2:1 Mux/DeMux USB 2.0 Switch w/ Single Enable 1I0 0I0 1I1 0I1 3I0 2I0 3I1 2I1 SEL Truth Table Function SEL Yn to nI0 L Yn to nI1 H VDD GND GND SEL 0l0 1I0 0I1 1I1 2I0 3I0 2I1 3I1

3.3V , Wide Bandwidth, 4-Channel, 2:1 Mux/DeMux USB 2.0 Switch PS8697B 02/01/05 (TA = –40°C to +85°C, VCC = 3.3V ±10%) Paramenter Description Test Conditions Min. Typ.(2) Max. Units VIH Input HIGH V oltage Guaranteed HIGH level 2.0 VVIL Input LOW V oltage Guaranteed HIGH level 0.8 VIK Clamp Diode V oltage VCC = Max., IIN = –18mA -0.7 -1.2 IIH Input HIGH Current VCC = Max., VIN = VCC ±5 μAIIL Input LOW Current VCC = Max., VIN = GND ±5 RON Switch On-Resistance(3) VCC = Min., 1.25V ≤ VIN ≤ VCC, IIN = –40mA 4 8 ΩRFLAT(ON) On-Resistance Flatness(4) VCC = Min., VIN @ 1.5V and VCC, IIN = -40mA 1.0 ΔRON On-Resistance match from center ports to any other port(4) VCC = Min., 1.5V ≤ VIN ≤ VCC, IIN = -40mA 0.9 2 Note: Stresses greater than those listed under MAXIMUM RAT- INGS 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. Maximum Ratings (Above which useful life may be impaired. For user guidelines, not tested.) 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 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 Typ. Max. Units CIN Input Capacitance VIN = 0V 2.0 3.0 pFCOFF Port I Capacitance, Switch OFF 4.0 6.0 CON Switch Capacitance, Switch ON 6.0 10.0

3.3V , Wide Bandwidth, 4-Channel, 2:1 Mux/DeMux USB 2.0 Switch PS8697B 02/01/05 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. Notes: 1. For max. or min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Guaranteed by design. 3. 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. Power Supply Characteristics Parameters Description Test Conditions(1) Min. Typ.(2) Max. Units ICC Quiescent Power Supply Current VCC = Max., VIN = GND or VCC 800 µA Dynamic Electrical Characteristics Over the Operating Range (TA = –40°C to +85°C, VCC = 3.3V ±10%, GND = 0V) Parameters Description Test Conditions Min. Typ.(1) Max. Units XTALK Crosstalk RL = 100Ω, f = 250 MHz -27 dBOIRR OFF Isolation -32 BW Bandwidth -3dB RL = 100Ω 500 MHz Switching Characteristics Parameters Description Test Conditions Min. Typ.(1) Max. Units tPD Propagation Delay(2,3) 0.25 ns tPZH, tPZL Line Enable Time - SEL to YN, NI0, IN 0.5 15.0 tPHZ, tPLZ Line Disable Time - SEL to YN, NI0, IN 0.5 9.0 tSK(o) Output Skew between center port to any other port(2) 0.1 0.2 tSK(p) Skew between opposite transitions of the same output (tPHL - tPLH) (2) 0.1 0.2

3.3V , Wide Bandwidth, 4-Channel, 2:1 Mux/DeMux USB 2.0 Switch PS8697B 02/01/05 Test Circuit for Electrical Characteristics(1) Notes: 1. CL = Load capacitance: includes jig and probe capacitance. 2. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator 3. 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. 4. All input impulses are supplied by generators having the following characteristics: PRR ≤ MHz, ZO = 50Ω, tR ≤ 2.5ns, tF ≤ 2.5ns. 5. The outputs are measured one at a time with on transition per measurement. Test Circuit for Dynamic Electrical Characteristics Switch Positions Test Switch tPLZ, tPZL (output on I-side) 6.0V tPHZ, tPZH (output on I-side) GND Prop Delay Open VCC PI3USB20 T1R1S1 HP11667A 50-ohm10pF HP4195A RT 10pF CL VCC VIN VOUT 200-ohm 200-ohm 6.0V Pulse Generator D.U.T

3.3V , Wide Bandwidth, 4-Channel, 2:1 Mux/DeMux USB 2.0 Switch PS8697B 02/01/05 Voltage Waveforms Propagation Delay Times Switching Waveforms Output Skew - tSK(o) Pulse Skew - tSK(p) Voltage Waveforms Enable and Disable Times 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 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 VOL VDD/2 VDD/2 tPHZ tPZL tPZH Output Output VOL +0.3V VOH –0.3V VOL VOH SEL Input tPLH 2.5V 2.5V 2.5V 2.5V tPHL 3.5V 1.5V Output VOH VOL

3.3V , Wide Bandwidth, 4-Channel, 2:1 Mux/DeMux USB 2.0 Switch PS8697B 02/01/05 .193 .201 .047 max. .002 .006 SEATING PLANE .0256 BSC .018 .030 .004 .008 .252 BSC .169 .177 0.05 0.15 6.4 0.45 0.75 0.09 0.20 4.3 4.5 1.20 4.9 5.1 0.65 0.19 0.30 .007 .012 Package Mechanical: 16-pin TSSOP (L) Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com Notes: 1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/

Ordering Information

Ordering Code Package Code Package Description PI3USB20L L 16-pin TSSOP PI3USB20LE L Pb-free & Green, 16-pin TSSOP