PI5C3390
PI5C32390 (25-ohm)
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16-to-8 Multiplexer/Demultiplexer
Bus Switch
Features:
• Near-Zero propagation delay
• Low noise, 25-ohm version (PI5C32390)
• 5-ohm switches connect inputs to outputs (PI5C3390)
• Direct bus connection when switches are ON
• Ultra-low quiescent power (0.2µA typical)
– Ideally suited for notebook applications
• Packaging (Pb-free & Green available):
– 28-pin 150-mil wide plastic QSOP (Q)
Description:
Pericom Semiconductor’s PI5C3390 and PI5C32390 are 16-to-8
multiplexer/demultiplexer bus switches with a low On-Resistance
allowing inputs to be connected directly to outputs. The two enable
inputs connect each of eight I/O to the common I/O pin. This
multiplexer function can be used to select and route logic signals to
form crossbar switches, isolate bus capacitance, or provide a zero
delay switch connection. The bus switch creates no additional
ground bounce noise or additional propagation delay. The PI5C32390
is designed with an internal 25-ohm resistor reducing noise reflection
in high-speed applications.
Block Diagram
A
0
C
0
Pin Configuration
A
0
B
0
C
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
CC
A
7
B
7
C
7
A
6
B
6
C
6
A
5
B
5
C
5
A
4
B
4
C
4
BEN
A
7
AEN
B
0
C
7
A
1
B
1
C
1
A
2
B
2
C
2
A
3
B
3
C
3
AEN
GND
B
7
BEN
Truth Table
(1)
AEN
H
L
H
L
BEN
H
H
L
L
A Sw
Off
On
Off
On
B Sw
Off
Off
On
On
Function
Disconnect
A to C
B to C
A, B to C
Pin Description
Pin Name
AEN, BEN
A
0
-
A7
B
0
-B
7
C0-C7
I/O
I
I/O
I/O
I/O
Description
Bus Output Enable (Active LOW)
Bus A
Bus B
Bus C
Note:
1. H = High Voltage Level
L = Low Voltage Level
1
PS7030E
09/15/04
PERICOM [ PERICOM SEMICONDUCTOR CORPORATION ]
