PI3B3253
3.3V, Dual 4:1
Mux/DeMux
NanoSwitch
™
Features
• Near-Zero propagation delay
• 5Ω switches connect inputs to outputs
• Fast Switching Speed: 5.2ns max.
• Ultra Low Quiescent Power (0.2µA typical)
– Ideally suited for notebook applications
• Pin compatible with 74 series 253 logic devices
• Packaging (Pb-free & Green available):
– 16-pin 150-mil wide plastic QSOP (Q)
– 16-pin 150-mil wide plastic SOIC (W)
– 16-pin 173-mil wide plastic TSSOP (L)
Description
Pericom Semiconductor’s PI3B3253 is a 3.3V, Dual4:1 Multi-
plexer/ Demultiplexer with Hi-Z outputs that is pinout compatible
with the PI74FCT253T, 74F253, and 74ALS/AS/LS 253. Inputs
can be connected to outputs with low On-Resistance (5Ω) with no
additional ground bounce noise or propagation delay.
Block Diagram
IA0
SW
Pin Configuration
IA1
IA2
IA3
IB0
IB1
IB2
IB3
EA
EB
S0
S1
SW
SW
SW
SW
SW
SW
SW
SW
I
E
Y
EA
1
16
V
CC
S1
2
15
EB
IA3
3
14
S0
IA2
4
13
IB3
IA1
5
12
11
10
9
IB2
IA0
6
IB1
YA
7
IB0
GND
8
YB
YA
YB
Truth Table
(1)
Enable
E
A
H
X
L
L
L
L
E
B
X
H
L
L
L
L
Select
S
1
X
X
L
L
H
H
S
0
X
X
L
H
L
H
Y
A
Hi-Z
X
I
A
0
I
A
1
I
A
2
I
A
3
Pin Description
Y
B
X
Hi-Z
I
B
0
I
B
1
I
B
2
I
B
3
Function
Disable A
Disable B
S1-0 = 0
S1-0 = 1
S1-0 = 2
S1-0 = 3
Pin Name
I
A
N
,
I
B
N
S
0-1
E
A
, E
B
Y
A
, Y
B
GND
V
CC
Description
Data Inputs
Select Inputs
Enable
Data Outputs
Ground
Power
Note:
1.
H = High Voltage Level, L = Low Voltage Level
PS8147G
09/09/04
1
PERICOM [ PERICOM SEMICONDUCTOR CORPORATION ]
