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PI5C3253C
Dual 4:1 Mux/Demux Bus Switch
with 鈥?V Undershoot Protection
Product Features
鈥?Near zero propagation delay
鈥?5ohm switches connect inputs to outputs
鈥?Direct bus connection when switches are ON
鈥?Undershoot protection to 鈥?V (Data Inputs Only)
鈥?Pin compatible with 74 series 253 logic devices
鈥?Packages available:
鈥?16-pin 150 mil wide plastic QSOP (Q)
鈥?16-pin 173 mil wide plastic TSSOP (L)
Product Description
Pericom Semiconductor鈥檚 PI5C series of logic circuits are produced
using the Company鈥檚 advanced submicron CMOS technology,
achieving industry leading performance.
The 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 (5ohm)
with no additional ground bounce noise or propagation delay.
Logic Block Diagram
IB
3
IB
2
YB
IB
1
IB
0
IA
3
IA
2
YA
IA
1
IA
0
Product Pin Configuration
EA
S
1
IA
3
IA
2
IA
1
IA
0
YA
GND
1
2
3
16
15
14
V
CC
EB
S
0
IB
3
IB
2
IB1
IB
0
YB
16-Pin
4
L,Q
13
5
6
7
8
12
11
10
9
EA
EB
S
0
S
1
Truth Table
(1)
Enable
E
A
H
X
L
L
L
L
E
B
X
H
L
L
L
L
Se le ct
S
1
X
X
L
L
H
H
S
0
X
X
L
H
L
H
Channe l
Function
Y
A
Hi- Z
X
IA
0
IA
1
IA
2
IA
3
Y
B
X
Disable A
Product Pin Description
Pin Name
E
A
, E
B
S
0- 1
1A
N
,1B
N
Y
A
, Y
B
V
CC
GND
De s cription
Enable
Select Inputs
Data Inputs
Data Outputs
Power Supply Pin
Ground
Hi- Z Disable B
IB
0
S
1- 0
= 0
IB
1
S
1- 0
= 1
IB
2
S
1- 0
= 2
IB
3
S
1- 0
= 2
Note:
1. H = High Logic Voltage Level
L = Low Logic Voltage Level
Hi-Z = High Impedance
1
PS8490
02/21/01
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