Logic Block Diagram
A
0
C
0
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PI5C3400
4-Bit, 4-Port Bus
Exchange Switch
PI5C3400
4-Bit, 4-Port Bus Exchange Switch
Product Features:
聲 Zero propagation delay
聲 Zero ground bounce in flow-through mode
聲 5ohm switches connect inputs to outputs
聲
聲
Direct bus connection when switches are ON
Ultra Low Quiescent Power (0.2 碌A(chǔ) Typical)
聳 Ideally suited for notebook applications
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 speed grades.
The PI5C3400 is a 4-bit, 4-port bus switch with individual exchanges
designed with a low ON resistance (5ohm) allowing inputs to be
connected directly to outputs. The bus switch creates no additional
propagational delay or ground bounce noise. The switches are
turned ON by the Bus Enable (BE) input signal, and the Bus
Exchange (BX
0
聳BX
3
) input signals offer individual bit swapping
of the AB and CD signal pairs. This exchange configuration allows
bit swapping of buses in systems.
聲 Packages available:
聳 24-pin 300 mil wide plastic PDIP (P)
聳 24-pin 150 mil wide plastic QSOP (Q)
聳 24-pin 300 mil wide plastic SOIC (S)
Product Pin Configuration
B
0
D
0
A
1
B
1
C
1
D
1
A
2
B
2
C
2
D
2
A
3
B
3
C
3
D
3
BE
C
0
A
0
B
0
D
0
C
1
A
1
B
1
D
1
BX
0
BX
1
GND
1
2
3
4
5
6
7
8
9
10
11
12
24-PIN
P
Q
S
24
23
22
21
20
19
18
17
16
15
14
13
Vcc
D
3
B
3
A
3
C
3
D
2
B
2
A
2
C
2
NC
BX
3
BX
2
BX
0
BX
1
BX
2
BX
3
BE
Truth Table
(1)
Function
Disconnect
Connect
Exchange
BE
H
L
L
BX
0
X
BX
1
BX
2
X
X
BX
i
= L
BX
i
= H
BX
3
X
A
0聳3
Hi-Z
C
0聳3
D
0聳3
B
0聳3
Hi-Z
D
0聳3
C
0聳3
Note:
1. H
X
L
Hi-Z
i
= High Voltage Level
= Don聮t Care
= Low Voltage Level
= High Impedance
= 0, 1, 2, or 3
1
PS8191
05/07/98
1
2
3
