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PI3USB40
3.3V, Wide Bandwidth, 8-Channel, 2:1 Mux/DeMux USB 2.0 Switch with Single Enable
Features
* * * * * * * * * * * RON is 4 typical Low bit-to-bit skew: 200ps Low crosstalk: -27dB @ 250MHz Low Current Consumption; 20A 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)
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).
Applications
* Routes physical layer signals for high-speed, high bandwidth differential protocols
Pin Description
V DD Y0
0I1 1I1 0I2 1I2
Block Diagram
Y0 Y1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25
0I 1
1I1
GND Y1 GND V DD GND Y2 GND Y3 GND V DD GND NC Y4 GND Y5 GND V DD GND Y6 GND Y7 SEL
GND 0I 2
1I2
GND
2 I1 3I1
Y2 Y3
2I1 3I1 2I2 3I2
GND
2 I2 3 I2
GND V DD
4 I1 5I1
Y4 Y5
4I1 5I1 4I2 5I2
GND
4I2 5I2
Y6 Y7
6I1 7I1 6I2 7I2
GND
6I1 7I1
GND
6I2 7I2
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PS8698A
02/01/05
PI3USB40 3.3V, Wide Bandwidth, 8-Channel, 2:1, Mux/DeMux USB 2.0 Switch with Single Enable Maximum Ratings Truth Table
Function YN to NI1 YN to NI2 SEL L H
(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 IOFF RON RFLAT(ON) RON Input HIGH Voltage Input LOW Voltage Clamp Diode Voltage Input HIGH Current Input LOW Current Power Down Leakage Current Switch On-Resistance(3) On-Resistance Flatness(4) On-Resistance match from center ports to any other port(4) Description Test Conditions Guaranteed HIGH level Guaranteed LOW level VCC = Max., IIN = -18mA VCC = Max., VIN = VCC VCC = Max., VIN = GND VCC = 0V, VA = 0V, VB 3.6 VCC = Min., 1.5V VIN VCC, IIN = -40mA VCC = Min., VIN @ 1.5V and VCC, IIN = -40mA VCC = Min., 1.5V VIN VCC, IIN = -40mA 4 1 0.9 2 8 -0.7 Min. 2 0.8 -1.2 5 5 A V Typ.(2) Max. Units
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PS8698A
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PI3USB40 3.3V, Wide Bandwidth, 8-Channel, 2:1, Mux/DeMux USB 2.0 Switch with Single Enable Capacitance (TA = 25C, f = 1MHz)
Parameters(5) Description Input Capacitance Port I Capacitance, Switch OFF Switch Capacitance, Switch ON VIN = 0V Test Conditions Typ. 2.0 4.0 6.0 Max. 3.0 6.0 10.0 pF Units CIN COFF CON
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.
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=-40 to +85C, VCC=3.3V10%, GND=0V)
Parameter XTALK OIRR BW Description Crosstalk OFF Isolation Bandwidth -3dB Test Conditions RL = 100, f = 250MHz RL = 100 Min. Typ.(2) -27 -32 500 Max. Units dB MHz
Switching Characteristics
Paramenter tPD tPZH, tPZL tPHZ, tPLZ tSK(o) tSK(p) Propagation Delay(2,3) Line Enable Time - SEL to YN, IN Line Disable Time - SEL to YN, IN Output Skew between center port (Y4 to Y5) to any other port(2) Skew between opposite transitions of the same output (tPHL - tPLH) (2) 0.5 0.5 0.1 0.1 Description Test Min. Conditions Typ.
(2)
Max.
Units
0.25 15 9 0.2 0.2 ns
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.
3
PS8698A
02/01/05
PI3USB40 3.3V, Wide Bandwidth, 8-Channel, 2:1, Mux/DeMux USB 2.0 Switch with Single Enable Test Circuit for Electrical Characteristics(1)
VCC 200-ohm Pulse Generator VIN RT D.U.T VOUT 10pF CL
6.0V
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 one transition per measurement.
Switch Positions
Test tPLZ, tPZL (output on B-side) tPHZ, tPZH (output on B-side) Prop Delay Switch 6.0V GND Open
Test Circuit for Dynamic Electrical Characteristics
HP4195A
S1
R1
T1
VCC HP11667A
PI3USB40 10pF 50-ohm
4
PS8698A
02/01/05
PI3USB40 3.3V, Wide Bandwidth, 8-Channel, 2:1, Mux/DeMux USB 2.0 Switch with Single Enable Switching Waveforms
SEL 3.5V Input 2.5V tPLH 2.5V 2.5V tPHL 2.5V 1.5V VOH VOL Output Output tPZL
1.25V
tPLZ
1.25V
2.5V 0V
VDD/2 tPZH VDD/2
VOH VOL +0.3V VOL VOH VOL
Output
tPHZ VOH -0.3V
Voltage Waveforms Propagation Delay Times
3.5V 2.5V Data In tPLHX tPHLX
1.5V VOH
Voltage Waveforms Enable and Disable Times
3.5V 2.5V Input tPLH tPHL
1.5V VOH
Data Out at Channel X
2.5V
I tSK(o)
VOL VOH
2.5V Output tSK(p) = I tPHL - tPLH I
VOL
Data Out at Channel Y
2.5V
VOL tPLHy tPHLy
tSK(o) = I tPLHy - tPLHx I or I tPHLy - tPHLx I
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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PS8698A
02/01/05
PI3USB40 3.3V, Wide Bandwidth, 8-Channel, 2:1, Mux/DeMux USB 2.0 Switch with Single Enable Packaging Mechanical: 48-Pin TSSOP (A)
48
.236 .244
6.0 6.2
1
.488 12.4 .496 12.6
.047 1.20 Max
SEATING PLANE
.004 0.09 .008 0.20
0.45 .018 0.75 .030
X.XX X.XX
DENOTES DIMENSIONS IN MILLIMETERS
.0197 BSC 0.50
.007 .010
0.17 0.27
.002 .006 0.05 0.15
.319 BSC 8.1
Ordering Information
Ordering Code PI3USB40A PI3USB40AE Package Code A A Package Description 48-pin 240 mil wide plastic TSSOP Pb-free & Green, 48-pin 240 mil wide plastic TSSOP
Notes: 1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
Pericom Semiconductor Corporation * 1-800-435-2336 * www.pericom.com
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PS8698A 02/01/05

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