PI3USB40 PERICOM | Alldatasheet
Document overview
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- PDF pages: 6
Technical content
Features
- RON is 4Ω typical
- Low bit-to-bit skew: 200ps
- Low crosstalk: –27dB @ 250MHz
- Low Current Consumption; 20μA
- Near-Zero propagation delay: 250ps
- Switching speed: 3ns
- Channel On-Capacitance: 6pF (typical)
- VCC Operating Range: +3.0V to +3.6V
- ESD >2000V . . . Human Body Model
- >500MHz bandwidth (or data frequency)
- Packaging (Pb-free & Green available): -48-pin 240 mil wide plastic TSSOP (A)
Applications
- Routes physical layer signals for high-speed, high bandwidth differential protocols
Description
The PI3USB40 is a 16- to 8-channel multiplexer/demultiplexer 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 transceiver 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 PI3USB40 3.3V, Wide Bandwidth, 8-Channel, 2:1 Mux/DeMux USB 2.0 Switch with Single Enable 0I1 1I1 0I2 1I2 2I1 3I1 2I2 3I2 4I1 5I1 4I2 5I2 6I1 7I1 6I2 7I2 0I1 1I1 GND 0I2 1I2 GND 2I1 3I1 GND 2I2 3I2 GND VDD 4I1 5I1 GND 4I2 5I2 GND 6I1 7I1 GND 6I2 7I2 VDD GND GND VDD GND GND GND VDD GND NC GND GND VDD GND GND SEL
3.3V, Wide Bandwidth, 8-Channel, 2:1, Mux/DeMux USB 2.0 Switch with Single Enable Note: Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and func tional 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.) Truth Table Function SEL YN to NI1 L YN to NI2 H (TA = –40°C to +85°C, VCC = 3.3V ±10%) Paramenter Min. Typ.(2) Max. Units VIH Input HIGH Voltage Guaranteed HIGH level V VIL Input LOW Voltage Guaranteed LOW level 0.8 VIK Clamp Diode Voltage VCC = Max., IIN = –18mA –0.7 –1.2 IIH Input HIGH Current VCC = Max., VIN = VCC µA IIL Input LOW Current VCC = Max., VIN = GND IOFF Power Down Leakage Current VCC = 0V, VA = 0V, VB ≤ 3.6 RON Switch On-Resistance(3) VCC = Min., 1.5V ≤ VIN ≤ VCC, IIN = –40mA Ω RFLAT(ON) On-Resistance Flatness(4) VCC = Min., VIN @ 1.5V and VCC, IIN = –40mA ∆RON On-Resistance match from center ports to any other port(4) VCC = Min., 1.5V ≤ VIN ≤ VCC, IIN = –40mA 0.9
3.3V, Wide Bandwidth, 8-Channel, 2:1, Mux/DeMux USB 2.0 Switch with Single Enable Notes: For max. or min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type. Typical values are at VCC = 3.3V, TA = 25°C ambient and maximum loading. Per TTL driven input (control inputs only); A and B pins do not contribute to ICC. Dynamic Electrical Characteristics Over the Operating Range (TA=-40º to +85ºC, VCC=3.3V±10%, GND=0V) Parameter Min. Typ.(2) Max. Units XTALK Crosstalk RL = 100Ω, f = 250MHz -27 dB OIRR OFF Isolation -32 BW Bandwidth –3dB RL = 100Ω 500 MHz Notes: For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type. Guaranteed by design. 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 Test Conditions(1) Min. Typ.(2) Max. Units ICC Quiescent Power Supply Current VCC = Max., VIN = GND or VCC 800 µA Notes: For max. or min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type. Typical values are at VCC = 3.3V, TA = 25°C ambient and maximum loading. 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. This parameter is determined by device characterization but is not production tested. Capacitance (TA = 25°C, f = 1MHz) Parameters(5) Typ. Max. Units CIN Input Capacitance VIN = 0V 2.0 3.0 pF COFF Port I Capacitance, Switch OFF 4.0 6.0 CON Switch Capacitance, Switch ON 6.0 10.0 Switching Characteristics Paramenter Min. Typ.(2) Max. Units tPD Propagation Delay(2,3) 0.25 ns tPZH, tPZL Line Enable Time - SEL to YN, IN 0.5 tPHZ, tPLZ Line Disable Time - SEL to YN, IN 0.5 tSK(o) Output Skew between center port (Y4 to Y5) 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, 8-Channel, 2:1, Mux/DeMux USB 2.0 Switch with Single Enable Test Circuit for Electrical Characteristics(1) Notes: CL = Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator 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. Test Circuit for Dynamic Electrical Characteristics 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 VCC PI3USB40 HP11667A 50-ohm 10pF HP4195A
3.3V, Wide Bandwidth, 8-Channel, 2:1, Mux/DeMux USB 2.0 Switch with Single Enable Voltage Waveforms Propagation Delay Times Switching Waveforms Output Skew - tSK(o) Pulse Skew - tSK(p) Voltage Waveforms Enable and Disable Times Data In Data Outat Channel X Data Outat 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 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 tPLH 2.5V 2.5V 2.5V 2.5V tPHL 3.5V 1.5V Output VOH VOL 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
3.3V, Wide Bandwidth, 8-Channel, 2:1, Mux/DeMux USB 2.0 Switch with Single Enable Packaging Mechanical: 48-Pin TSSOP (A) .236 .244 .488 .496 .002 .006 SEATING PLANE .007 .010 .0197 BSC .004 .008 .319 12.4 12.6 6.0 6.2 0.50 0.17 0.27 8.1 0.05 0.15 0.09 0.20 X.XX X.XX DENOTES DIMENSIONS IN MILLIMETERS .018 .030 0.45 0.75 .047
1.20 Max
Notes: 1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
Ordering Information
A 48-pin 240 mil wide plastic TSSOP PI3USB40AE A Pb-free & Green, 48-pin 240 mil wide plastic TSSOP Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com