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PI3C32X384 Datasheet, PDF (3/5 Pages) Pericom Semiconductor Corporation – 2.5V/3.3V, High Bandwidth, Hot Insertion 20-Bit, 2-Port, Bus Switch
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PI3C32X384
2.5V/3.3V, High Bandwidth, Hot Insertion,
20-Bit, 2-Port Bus Switch
Power Supply Characteristics
Parameters Description
Test Conditions(1)
Min Typ (2) Max
ICC
Quiescent Power Supply VCC = Max.
Current
VIN = GND or VCC
0.5
1.0
ΔICC
Supply Current per
Input HIGH
VCC = Max.
VIN = 3.0V(3)
2.5
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at VCC = 3.3V, +25°C ambient.
3. Per TTL driven input (control input only); A and B pins do not contribute to ICC.
Units
mA
Switching Characteristics over 3.3V Operating Range
Parameters Description
tPLH
Propagation Delay(2,3)
tPHL
Ax to Bx, Bx to Ax
tPZH
Bus Enable Time
tPZL
BE to Ax or Bx
tPHZ
Bus Disable Time
tPLZ
BE to Ax or Bx
Test Conditions (1)
CL = 50 pF
RL = 500Ω
Com.
Min Max
Units
0.25
1.5
6.5
ns
1.5
5.5
Switching Characteristics over 2.5V Operating Range
Com.
Parameters Description
Test Conditions (1) Min Max Units
tPLH
Propagation Delay(2,3)
tPHL
Ax to Bx, Bx to Ax
0.25
tPZH
Bus Enable Time
CL = 50 pF
tPZL
BE to Ax or Bx
RL = 500Ω
1.5
9.8
ns
tPHZ
Bus Disable Time
tPLZ
BE to Ax or Bx
1.5
8.3
Notes:
1. See test circuit and waveforms.
2. This parameter is guaranteed but not tested on Propagation Delays.
3. The bus switch contributes no propagational delay other than the RC delay of the On-Resistance of the switch and the load ca-
pacitance. The time constant for the switch alone is of the order of 0.25 ns for 50 pF 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 interaction with the load
on the driven side.
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11-0008
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www.pericom.com
PS8430D
09/30/10
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