PI3C3125 Datasheet, PDF (4/5 Pages) Pericom Semiconductor Corporation – 2.5V/3.3V, High Bandwidth, Hot Insertion,4-Bit, 2-Port Bus Switch with Individual Enables

PI3C3125/PI3C3126
2.5V/3.3V, High Bandwidth,
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PI3C3125/PI3C3126 Switching Characteristics over 3.3V Operating Range
PI3C3125/PI3C3126
Parameters Description
Conditions⁽¹⁾
Com.
Min. Max.
Units
t_PLH
t_PHL
t_PZH
t_PZL
t_PHZ
t_PLZ
Propagation Delay^(2,3) C_L = 50 pF,
A to B, B to A
R_L = 500Ω
Bus Enable Time
C_L = 50 pF,
Bus Disable Time
R_L = 500Ω,
R = 500Ω
0.25
1.5
6.5
ns
1.5
5.5
PI3C3125/PI3C3126 Switching Characteristics over 2.5V Operating Range
PI3C3125/PI3C3126
Parameters Description
Conditions⁽¹⁾
Com.
Min. Max.
Units
t_PLH
t_PHL
t_PZH
t_PZL
t_PHZ
t_PLZ
Propagation Delay^(2,3) C_L = 50 pF,
A to B, B to A
R_L = 500Ω
Bus Enable Time
Bus Disable Time
C_L = 50 pF,
R_L = 500Ω,
R = 500Ω
0.25
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 capacitance. The time constant for the
switch alone is of the order of 0.25ns for 50pF 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.
4
PS8153B 12/10/99