pi3c3125 Pericom Semiconductor Corporation, pi3c3125 Datasheet - Page 4

• Manufacturer Part Number: pi3c3125
• Description: 3.3v, High-bandwidth Bus Switch, 4-bit, W/individual Enables
• Manufacturer: Pericom Semiconductor Corporation

PI3C3125/PI3C3126 Switching Characteristics over 3.3V Operating Range
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
PI3C3125/PI3C3126 Switching Characteristics over 2.5V Operating Range
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.
Parameters Description
Parameters Description
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.
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.
t
t
t
t
t
t
t
t
t
t
t
t
PLH
PHL
PZH
PHZ
PZL
PLZ
PLH
PHL
PZH
PHZ
PZL
PLZ
07-0240
Propogation Delay
A to B, B to A
Bus Enable Time
Bus Disable Time
Propogation Delay
A to B, B to A
Bus Enable Time
Bus Disable Time
(1,2)
(1,2)
Conditions
C
R
C
R
R = 500Ω
Conditions
C
R
C
R
R = 500Ω
L
L
L
L
L
L
L
L
=50pF
= 500Ω
=50pF
= 500Ω
=50pF
= 500Ω
=50pF
= 500Ω
4
2.5V/3.3V, High Bandwidth, Hot Insertion,4-Bit,
PI3C3125/PI3C3126
PI3C3125/PI3C3126
Min.
Min.
2-Port Bus Switch with Individual Enables
1.5
1.5
1.5
1.5
Com.
Com.
Max.
Max.
0.25
0.25
6.5
5.5
9.8
8.3
PI3C3125/PI3C3126
PS8153H
Units
Units
ns
ns
10/25/07