Logic Block Diagram
A
0
B
0
A
5
B
5
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PI3C32X384
PI3C32X2384 (25ohm)
Product Features
聲
聲
聲
聲
聲
聲
聲
聲
Near-zero propagation delay
Low noise, 25ohm version (PI3C32X2384)
5ohm switches connect inputs to outputs (PI3C32X384)
High Bandwidth (>400 MHz)
Permits Hot Insertion.
5V I/O Tolerant
2.5V Supply Voltage Operation
Packages available:
聳 48-pin 150-mil wide plastic BQSOP (B)
聳 48-pin 240-mil wide plastic TSSOP (A)
2.5V/3.3V, High Bandwidth, Hot Insertion
20-Bit, 2-Port, Bus Switch
Product Description
Pericom Semiconductor聮s PI3C series of logic circuits are produced
using the Company聮s advanced submicron CMOS technology,
achieving industry performance.
The PI3C32X384, and PI3C32X2384 are 2.5V or 3.3Volt, high-
bandwidth 20-bit, 2-port bus switches 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. Four bus enable signals are provided,
one for each of the upper and lower five bits of the two 10-bit buses.
The PI3C32X2384 is designed with an internal 25ohm resistor
reducing noise reflection in high-speed applications.
Applications
聲 High Bandwidth Data switching
聲 Hot Docking
Product Pin Configuration
BE
A
B
0
A
0
A
1
B
1
B
2
A
2
A
3
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
B
19
A
19
A
18
B
18
B
17
A
17
A
16
B
16
B
15
A
15
BE
B
VCC
B
14
A
14
A
13
B
13
B
12
A
12
A
11
B
11
B
10
A
10
BE
D
A
4
A
15
B
4
B
15
A
9
A
10
B
9
B
10
A
19
B
19
A
14
B
14
B
3
B
4
A
4
GND
BE
C
B
5
A
5
A
6
B
6
B
7
A
7
A
8
B
8
B
9
A
9
GND
48-Pin
A,B
BE
A
BE
B
BE
C
BE
D
Truth Table
(1)
Function
Disconnect
Connect
Connect
Connect
Function
Disconnect
Connect
Connect
Connect
BE
A
H
L
H
L
BE
C
H
L
H
L
BE
B
H
H
L
L
BE
D
H
H
L
L
B
0-B4
Hi-Z
A
4-A0
Hi-Z
A
4-A0
B
9-B5
Hi-Z
A
9-A5
Hi-Z
A
9-A5
B
5-B9
Hi-Z
Hi-Z
A
19-A15
A
19-A15
B
14-B10
Hi-Z
Hi-Z
A
14-A10
A
14-A10
Product Pin Description
Pin Name
BE
X
A
19
- A
0
B
19
- B0
GND
V
CC
1
Note:
1. H = High Voltage Level, X = Don聮t Care,
L = Low Voltage Level, Hi-Z = High Impedance
Description
Bus Enable Inputs (Active LOW)
Bus A
Bus B
Ground
Power
PS8430A
12/10/99
1
2
3
4
