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PI3USB10
3.3V, Wide Bandwidth, 2-Channel, 2:1 Mux/DeMux USB 2.0 Switch w/ Single Enable
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: 6pF (typical) * VCC Operating Range: +3.0V to +3.6V * ESD>2000V . . . Human Body Model * >500 MHz bandwidth (or data frequency) * Packaging: - Pb-free & Green,12-contact TDFN (ZE)
Description
Pericom Semiconductor's PI3USB series of logic circuits are produced using the Company's advanced sub-micron CMOS technology, achieving industry leading performance. The PI3USB10 is a 4- to 2-Channel multiplexer/demultiplexer USB 2.0 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).
Application
* Routes signals for USB 2.0
Block Diagram
Pin Description
Y0 Y1
0I0 1I0 0I1 1I1
GND VDD Y0 Y1 GND SEL
1 2 3 4 5 6
12 11 10 9 8 7
0l0 1I0 0I1 1I1
SEL
VDD GND
Truth Table
Function Yn to nIo Yn to nI1 SEL L H
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PS8718
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PI3USB10 3.3V, Wide Bandwidth, 2-Channel, 2:1 Mux/DeMux USB 2.0 Switch
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 USB 2.0 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) On-Resistance match from center ports to any other port(4) Test Conditions Guaranteed HIGH level Guaranteed HIGH level VCC = Max., IIN = -18mA VCC = Max., VIN = VCC VCC = Max., VIN = GND VCC = Min., 1.25V VIN VCC, IIN = -40mA VCC = Min., VIN @ 1.5V and VCC IIN = -40mA VCC = Min., 1.5V VIN VCC, IIN = -40mA Min. 2.0 -5.0 Type(2) -0.7 4 1.0 0.9 Max. 0.8 -1.2 5 5 8 2 A V Units
Capacitance (TA = 25C, f = 1MHz)
Parameters(4) CIN COFF CON Description Input Capacitance Port I Capacitance, Switch OFF Switch Capacitance, Switch ON VIN = 0V Test Conditions Type 2.0 4.0 6.0 Max. 3.0 6.0 10.0 pF Units
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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PI3USB10 3.3V, Wide Bandwidth, 2-Channel, 2:1 Mux/DeMux USB 2.0 Switch
Power Supply Characteristics
Parameters ICC Description Quiescent Power Supply Current
Test Conditions (1) VCC = Max., VIN = GND or VCC
Min. -
Typ. (2) -
Max. 800
Units A
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, VCC = 3.3V 10%, GND = 0V) Parameters XTALK OIRR BW Description Crosstalk OFF Isolation Bandwidth -3dB Test Conditions RL = 100, f = 250 MHz RL = 100 Min. Typ.(1) -27 -32 500 Max. Units dB MHz
Switching Characteristics
Parameters tPD tPZH, tPZL tPHZ, tPLZ tSK(o) tSK(p) Propagation Delay(2,3) Line Enable Time - SEL to YN, NI0, IN Line Disable Time - SEL to YN, NI0, IN Output Skew between center port to any other port(2) Skew between opposite transitions of the same output (tPHL - tPLH) (2) Description Test Conditions Min. 0.5 0.5 Typ.(1) 0.25 0.1 0.1 15.0 9.0 0.2 0.2 ns Max. Units
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.
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PI3USB10 3.3V, Wide Bandwidth, 2-Channel, 2:1 Mux/DeMux USB 2.0 Switch
Test Circuit for Electrical Characteristics(1)
6.0V VCC 200-ohm Pulse Generator VIN D.U.T RT VOUT 10pF CL 200-ohm
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 = 50, tR 2.5ns, tF 2.5ns. 5. The outputs are measured one at a time with on transition per measurement.
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
PI3USB10 10pF 50-ohm
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PS8718
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PI3USB10 3.3V, Wide Bandwidth, 2-Channel, 2:1 Mux/DeMux USB 2.0 Switch
Switching Waveforms
SEL
2.5V 1.25V tPZL VDD/2 1.25V 0V
3.5V Input tPLH Output 2.5V 2.5V 2.5V tPHL 2.5V VOL
Output
1.5V VOH
Output
tPLZ VOL +0.3V tPHZ VDD/2 VOH -0.3V
VOH VOL VOH VOL
tPZH
Voltage Waveforms Propagation Delay Times
Voltage Waveforms Enable and Disable Times
3.5V 2.5V Data In tPLHX tPHLX 1.5V VOH 2.5V Data Out at Channel X I tSK(o) VOL VOH Data Out at Channel Y tPLHy tPHLy tSK(o) = I tPLHy - tPLHx I or I tPHLy - tPHLx I 2.5V VOL Output tSK(p) = I tPHL - tPLH I Input tPLH tPHL 3.5V 2.5V 1.5V VOH 2.5V VOL
Output Skew - tSK(o)
Pulse Skew - tSK(p)
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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PS8718
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PI3USB10 3.3V, Wide Bandwidth, 2-Channel, 2:1 Mux/DeMux USB 2.0 Switch
Package Mechanical: 12-Contact TDFN (ZE)
2.50 REF.
Pin #1 Corner
0.50 TYP.
0.20 REF.
Ordering Information
Ordering Code PI3USB10ZEE Package Code ZE Package Description Pb-free & Green, 12-contact TDFN Top Marking YJ
Notes: 1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ 2. Number of transistors = TBD
Pericom Semiconductor Corporation * 1-800-435-2336 * www.pericom.com
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PS8718 07/23/04

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