PI3C3126_10 Datasheet, PDF (4/7 Pages) Pericom Semiconductor Corporation – 2.5V/3.3V, High Bandwidth, Hot Insertion,4-Bit, 2-Port Bus Switch with Individual Enables

PI3C3126
2.5V/3.3V, High Bandwidth, Hot Insertion,4-Bit,
2-Port Bus Switch with Individual Enables
Switching Characteristics over 3.3V Operating Range
Parameters
t_PLH
t_PHL
t_PZH
t_PZL
t_PHZ
t_PLZ
Description
Propogation Delay^(1,2)
A to B, B to A
Bus Enable Time
Bus Disable Time
Conditions
C_L =50pF
R_L = 500Ω
C_L =50pF
R_L = 500Ω
R = 500Ω
Com.
Min.
1.5
1.5
Max.
0.25
6.5
5.5
Units
ns
Notes:
1. This parameter is guaranteed but not tested on Propagation Delays.
2. 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.
Switching Characteristics over 2.5V Operating Range
Parameters
t_PLH
t_PHL
t_PZH
t_PZL
t_PHZ
t_PLZ
Description
Propogation Delay^(1,2)
A to B, B to A
Bus Enable Time
Bus Disable Time
Conditions
C_L =50pF
R_L = 500Ω
C_L =50pF
R_L = 500Ω
R = 500Ω
Com.
Min.
1.5
1.5
Max.
0.25
9.8
8.3
Units
ns
Notes:
1. This parameter is guaranteed but not tested on Propagation Delays.
2. 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.
11-0003
4
PS9087A
09/24/10