21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
1
2109876543212109876543210987654321098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5C3253C
Dual 4:1 Mux/DeMux Bus Switch
with –2V Undershoot Protection
Features
• Near-Zero propagation delay
• 4-ohm switches connect inputs to outputs
• Direct bus connection when switches are ON
• Undershoot protection to –2V (Data Inputs Only)
• Pin compatible with 74 series 253 logic devices
• Packaging (Pb-free & Green available):
– 16-pin 173-mil wide plastic TSSOP (L)
Description
Pericom Semiconductor’s PI5C3253C is a Dual 4:1 multiplexer/
demultiplexer with three-state outputs that is pinout compatible with
the PI74FCT253T. Inputs can be connected to outputs with low On-
Resistance (5-ohm) with no additional ground bounce noise or
propagation delay.
Block Diagram
IB
3
IB
2
YB
IB
1
IB
0
IA
3
IA
2
YA
IA
1
IA
0
Pin Configuration
EA
S
1
IA
3
IA
2
IA
1
IA
0
YA
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC
EB
S
0
IB
3
IB
2
IB1
IB
0
YB
EA
EB
S
0
S
1
Pin Description
Pin Name
EA, EB
S 0- 1
1AN,1BN
YA, YB
VCC
GND
Enable
Select Inputs
Data Inputs
Data Outputs
Power Supply Pin
Ground
De s cription
Truth Table
(1)
Enable
EA
H
X
L
L
L
L
EB
X
H
L
L
L
L
Se le ct
S1
X
X
L
L
H
H
S0
X
X
L
H
L
H
Channe l
YA
Hi- Z
X
IA0
IA1
IA2
IA3
YB
X
Hi- Z
IB0
IB1
IB2
IB3
Function
Disable A
Disable B
S1- 0 = 0
S1- 0 = 1
S1- 0 = 2
S1- 0 = 2
Note:
1. H = High Logic Voltage Level
L = Low Logic Voltage Level
Hi-Z = High Impedance
1
PS8490C
11/18/04
PERICOM [ PERICOM SEMICONDUCTOR CORPORATION ]
