PI3VT32X245-A Datasheet, PDF (4/5 Pages) Pericom Semiconductor Corporation – 16-Bit, 2-Port, Low Voltage Translator Bus Switch

PI3VT32X245-A
16-Bit, 2-Port, Low Voltage
Translator Bus Switch
Switching Characteristics over 2.5V±0.2V Operating Range
Com.
Parameters Description
Test Conditions⁽¹⁾
Min Max Units
tPLH
Propagation Delay^(2,3) C_L = 50 pF
tPHL
Ax to Bx
RL = 500Ω
0.25
tPZH
Bus Enable Time
tPZL
BE to Ax or Bx
CL = 50 pF
tPHZ
Bus Disable Time
RL = 500Ω
R = 500Ω
tPLZ
BE to Ax or Bx
1.5
9.8
ns
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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