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PI5C32X383/PI5C32X2383
Product Features
聲 Near-zero propagation delay
聲 Low noise, 25ohm version (PI5C32X2383)
聲 5 ohm switches connect inputs to outputs (PI5C32X383)
聲 Direct bus connection when switches are ON
聲 Ultra-low quiescent power (0.2碌A(chǔ) typical)
聳 Ideally suited for notebook applications
聲 Packages available:
聳 48-pin 240-mil wide thin plastic TSSOP (A)
聳 48-pin 150-mil wide plastic QSOP (B)
20-Bit Bus Switch/Exchange
Product Description
Pericom Semiconductor聮s PI5C series of logic circuits are pro-duced
in the Company聮s advanced submicron CMOS technology,
achieving industry leading performance.
The PI5C32X383 and PI5C32X2383 are 20-bit bus switches with
exchange designed with a low ON resistance allowing inputs to be
connected directly to outputs. The bus switch creates no additional
propagational delay or additional ground bounce noise. The switches
are turned ON by the Bus Enable (BE) input signal, and the Bus
Exchange (BX) input signal offers nibble swapping of the AB and
CD pairs of signals. This exchange configuration allows byte
swapping of buses in systems. It can also be used as a quad
2-to-1 multiplexer and to create low delay barrel shifters, etc. The
PI5C32X2383 is designed with an internal 25ohm resistor reducing
noise reflection in high-speed applications.
Product Pin Configuration
BE1
C0
A0
B0
D0
C1
A1
B1
D1
C2
A2
GND
BE2
C5
A5
B5
D5
C6
A6
B6
D6
C7
A7
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
VCC
D4
B4
A4
C4
D3
B3
A3
C3
D2
B2
BX1
VCC
D9
B9
A9
C9
D8
B8
A8
C8
D7
B7
BX2
Applications
10-wide 2:1 MUX, Byte Swapping, and Hot Insertion.
Truth Table
(1)
Function
Disconnect
Connect
Exchange
BE
N
H
L
L
BXn
X
L
H
A
0-A9
Hi-Z
C
0-
C
9
D
0-
D
9
B
0-B9
Hi-Z
D
0-
D
9
C
0-
C
9
48-Pin
Note:
1. H = High Voltage Level, X = Don聮t Care,
L = Low Voltage Level, Hi-Z = High Impedance
Logic Block Diagram
A
0
C
0
A
5
C
5
B
0
D
0
B
5
D
5
A
4
C
4
A
9
C
9
Product Pin Description
Pin Name
BEn
BXn
Ax
Bx
Cx
Dx
GND
V
CC
Description
Bus Enable Input (Active LOW)
Bus Exchange Input
Bus A
Bus B
Bus C
Bus D
Ground
Power
B
4
D
4
B
9
D
9
BX1
BE1
BX2
BE2
1
PS8100
07/10/97
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