pi3b3125 Pericom Semiconductor Corporation, pi3b3125 Datasheet - Page 4

• Manufacturer Part Number: pi3b3125
• Description: 3.3v 4-bit Bus Switch With Individual Enable Active Low
• Manufacturer: Pericom Semiconductor Corporation

PI3B3125 Switching Characteristics over Operating Range
PI3B3126 Switching Characteristics over Operating Range
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
Applications Information
Logic Inputs
The logic control inputs can be driven up to +3.6V regardless of the supply voltage. For example, given a + 3.3V supply, IN may be
driven low to 0V and high to 3.6V. Driving IN Rail-to-Rail® minimizes power consumption.
Power-Supply Sequencing and Hot-Plug Information
Proper power-supply sequencing is recommended for all CMOS devices. Always apply V
input/output or control pins.
Rail-to-Rail is a registeredtrademark of Nippon Motorola, Ltd.
Parameters
Parameters
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
PZH
PHZ
PHL
PZL
PLZ
PLH
PHL
PZH
PHZ
PZL
PLZ
Propagation Delay
Ax to Bx, Bx to Ax
Bus Enable Time
Bus Disable Time
Propagation Delay
Ax to Bx, Bx to Ax
Bus Enable Time
Bus Disable Time
Description
Description
(2,3)
(2,3)
Conditions
Conditions
R
R
R
C
R
R
R
C
C
C
4
L
L
L
L
L
L
L
L
L
L
= 500Ω,
= 50pF,
= 500Ω,
= 500Ω
= 50pF,
= 500Ω
= 50pF
= 500Ω
= 500Ω
= 50pF
(1)
(1)
Min.
Min.
1.0
1.0
1.0
1.0
CC
3.3V, 4-Bit, 2-Port NanoSwitch
and GND before applying signals to
PI3B3125
PI3B3126
Com.
Com.
Max.
Max.
0.25
0.25
3.0
4.0
2.5
4.0
w/Individual Enables
PI3B3125/PI3B3126
PS8153F
Units
Units
ns
ns
09/09/04
™