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3.3V, High Bandwidth, Hot Insertion
40-Bit, 2-Port, Bus Switch
Product Features
聲 Near-zero propagation delay
聲 Low noise, 25鈩?version (PI3C34X2484)
聲 5鈩?switches connect inputs to outputs (PI3C34X2484)
聲 High Bandwidth (>200 MHz)
聲 Permits Hot Insertion.
聲 Rail-to-Rail, 3.3V Switching
聲 5V I/O Tolerant
聲 Packages available:
聳 96-pin LFBGA (NB96)
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 PI3C34X484, and PI3C34X2484 are 3.3Volt, high bandwidth
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 PI3C34X2484 is designed with an internal 25鈩?resistor
reducing noise reflection in high-speed applications.
Applications
聲 High Bandwidth Data switching
聲 Hot Docking
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
N
BE
A, N
BE
B
N
GN D
N
V
CC
1
A
5
1
A
9
1
B
5
1
B
9
2
A
5
2
A
9
2
B
5
2
B
9
Note:
N = 1 through 4 for each set of 10 bit buses
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
Truth Table
(1)
Function
N
BE
A
N
BE
B
B
0-B4
B
5-B9
Disconnect
H
H
Hi-Z
Hi-Z
Connect
L
H
A
0-A4
Hi-Z
Connect
H
L
Hi-Z
A
5-A9
Connect
L
L
A
0-A4
A
5-A9
Note:
1. H = High Voltage Level, X = Don聮t Care,
L = Low Voltage Level, Hi-Z = High Impedance
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
1
PS8406
01/11/00
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2
3
4
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