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21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5C16862C
20-Bit, 2-Port Bus Switch
with Undershoot Protection
Features
•
•
•
•
•
Near-Zero propagation delay
5-ohm switches connect inputs to outputs
Undershoot Protection up to –1V
Direct bus connection when switches are ON
32X384 function with flow through pinout make board
layout easier
•
Ultra-low quiescent power (120µA typical)
— ideally suited for notebook applications
•
Industrial operating temperature: –40°C to +85°C
•
Packaging (Pb-free & Green avaliable):
— 48-pin 240-mil wide plastic TSSOP
— 48-pin 150-mil wide plastic BQSOP
Description
Pericom Semiconductor’s PI5C16862C is configured as a 20-bit, 2-
port bus switch designed with a low On-Resistance (5-ohm) 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 (BEx) input
signal.
The PI5C16862C can withstand undershoot of up to –1V.
Block Diagram
Pin Configuration
BE
2
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
7
A
8
A
9
GND
BE
4
A
10
A
11
A
12
A
13
A
14
A
15
A
16
A
17
A
18
A
19
GND
1
48
2
47
3
46
4
45
5
44
6
43
7
42
8
41
9
40
10
39
11
48-Pin
38
12
A, B
37
13
36
14
35
15
34
16
33
17
32
18
31
19
30
20
29
21
28
22
27
23
26
24
25
VCC
BE
1
B
0
B
1
B
2
B
3
B
4
B
5
B
6
B
7
B
8
B
9
V
CC
BE
3
B
10
B
11
B
12
B
13
B
14
B
15
B
16
B
17
B
18
B
19
A
0
B
0
A
4
B
4
BE
1
A
15
B
15
A
19
B
19
BE
4
Truth Table
(1)
Function
Disconnect
Connect
BEx
H
L
A19-A0
Hi- Z
B19- B0
Pin Description
Pin Name
BEx
A19- A0
B19- B0
Bus A
Bus B
De s cription
Bus Enable Inputs (Active LOW)
Note:
1. H
= High Voltage Level
L
= Low Voltage Level
Hi-Z = High Impedance
1
PS8391C
09/15/04
PERICOM [ PERICOM SEMICONDUCTOR CORPORATION ]
