pi3b3245 Pericom Semiconductor Corporation, pi3b3245 Datasheet - Page 3

• Manufacturer Part Number: pi3b3245
• Description: 3.3v 8-bit Bus Switch Fct245 Pinout
• Manufacturer: Pericom Semiconductor Corporation

Applications Information
Logic Inputs
The logic control inputs can be driven up to +3.6 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
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.
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at V
3. Per TTL driven input (control input only); A and B pins do not contribute to I
Switching Characteristics over 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
Power Supply Characteristics
Parameters Description
Parameters Description
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.
I
ΔI
CC
t
t
t
t
t
t
PLZ
P L H
P H L
PZH
PZL
PHZ
CC
06-0220
Propagation Delay
Ax to Bx, Bx to Ax
Bus Enable Time
BE to Ax or Bx
Bus Disable Time
BE to Ax or Bx
Quiescent Power
Supply Current
Supply Current per
Input HIGH
CC
= 3.3V, +25°C ambient.
(1,2)
C
R
C
R
R
Conditions
L
L
L
L
L
= 50pF
= 500Ω
= 50pF
= 500Ω
= 500Ω
V
V
CC
CC
= Max.
= Max.
®
minimizes power consumption.
Test Conditions
Min.
1.0
1.0
PI3B3245
3
Com.
Max.
0.25
4.0
(1)
4.5
V
V
IN
IN
= GND or V
= 3.0V
CC
Units
.
ns
ns
ns
(3)
CC
and GND before applying signals to
CC
8-Bit, 2-Port, NanoSwitch™
Min.
Typ
3.3V, Hot Insertion
0.1
(2)
Max.
750
PS8162G
3.0
PI3B3245
Units
μA
μA
05/17/06