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PI5C34X484/P15C34X2484(25ohm)
40-Bit, 2-Port Bus Switch
PI5C34X484
PI5C34X2484 (25ohm)
40-Bit, 2-Port Bus Switch
Product Features
聲 Near-zero propagation delay
聲 Low noise, 25鈩?version (PI5C34X2484)
聲 5ohm switches connect inputs to outputs
(PI5C34X484)
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 96-pin Low Profile Fine Pitch Ball Grid Array (N96)
Product Description
Pericom Semiconductor聮s PI5C series of logic circuits are produced
using the Company聮s advanced submicron CMOS technology,
achieving industry performance.
The PI5C34X484 and PI5C34X2484 are 40-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. Eight bus enable signals
are provided, one for each of the upper and lower five bits of the four
10-bit buses. The PI5C34X2484 is designed with an internal 25ohm
resistor reducing noise reflection in high-speed applications.
Logic Block Diagram
1
A
0
1
A
4
1
B
0
1
B
4
2
A
0
2
A
4
2
B
0
2
B
4
Product Pin Description
Pin Name
N
A
0
N
B
0
De s cription
Bus A
Bus B
Bus Enable Pins (Active LOW)
Ground
Power
-
N
A
9
-
N
B
9
1
A
5
1
A
9
1
B
5
1
B
9
2
A
5
2
A
9
2
B
5
2
B
9
N
BE
A, N
BE
B
N
GN D
1
BE
A
1
BE
B
3
A
0
3
A
4
3
B
0
3
B
4
2
BE
A
2
BE
B
4
A
0
4
A
4
4
B
0
4
B
4
N
V
CC
Note
N = 1 through 4 for each set of 10 bit buses
3
A
5
3
A
9
3
B
5
3
B
9
4
A
5
4
A
9
4
B
5
4
B
9
3
BE
A
3
BE
B
4
BE
A
4
BE
B
Truth Table
(1)
Function
Disconnect
Connect
Connect
Connect
N
BE
A
N
BE
B
H
L
H
L
H
H
L
L
B
0-B4
Hi-Z
A
0-A4
Hi-Z
A
0-A4
B
5-B9
Hi-Z
Hi-Z
A
5-A9
A
5-A9
Note:
1. H
= High Voltage Level
Hi-Z = High Impedance
1
PS8407A
01/19/01
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