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鈩?/div>
Product Features
鈥?Near-zero propagation delay
鈥?25鈩?series resistor
鈥?5鈩?switches connect inputs to outputs
鈥?Direct bus connection when switches are ON
鈥?Ultra-low quiescent power 32X2384 (0.2碌A typical)
鈥?Ideally suited for notebook applications
鈥?Packages available:
鈥?48-pin 150-mil wide plastic BQSOP (B)
鈥?48-pin 240-mil wide plastic TSSOP (A)
Product Description
Pericom Semiconductor鈥檚 PI5C series of BusSwitch circuits are
produced in the Company鈥檚 advanced sub-micron CMOS
technology, achieving industry leading performance.
The PI5C32X2384 is a 20-bit 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.
There is an internal 25鈩?series resistor to reduce noise reflection in
high-speed applications.
Logic Block Diagram
A
0
B
0
A
5
B
5
Product Pin Configuration
BE
A
B
0
A
0
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
1
B
1
B
2
A
2
A
3
B
3
B
4
A
4
GND
BE
C
B
5
A
5
A
6
B
6
B
7
A
7
48-PIN
A, B
A
19
B
19
A
14
B
14
BE
A
BE
B
BE
C
BE
D
Truth Table
(1)
Function
BE
A
BE
B
B
4鈥揃0
B
19-B15
Disconnect
H
H
Hi-Z
Hi-Z
Connect
L
H
A4-A0
Hi-Z
Connect
H
L
Hi-Z
A19-A15
Connect
L
L
A4-A0 A19-A15
Function
BE
C
BE
D
B
9鈥揃5
B
14-B10
Disconnect
H
H
Hi-Z
Hi-Z
Connect
L
H
A9-A5
Hi-Z
Connect
H
L
Hi-Z
A14-A10
Connect
L
L
A9-A5 A14-A10
Note:
1. H = High Voltage Level, L = Low Voltage Level,
Hi-Z = High Impedance
1
A
8
B
8
B
9
A
9
GND
Product Pin Description
Pin Name
BEx
A
19-A0
B
19-B0
GND
V
CC
Description
Bus Enable Inputs (Active LOW)
Bus A
Bus B
Ground
Power
PS8101C
01/18/99
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2
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