Block Diagram
A
0
B
0
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI3B3384
Ω
PI3B32384 (25Ω)
3.3V, 10-Bit, 2-Port,
NanoSwitch™
Features
•
•
•
•
•
Near-Zero propagation delay
Low noise, 25-ohm version (PI3B32384)
5-ohm switches connect inputs to outputs (PI3B3384)
Fast Switching Speed - 4.5ns max.
Ultra-low quiescent power (0.1µA typical)
– Ideally suited for notebook applications
• Packaging (Pb-free & Green available):
– 24-pin 150-mil wide plastic QSOP (Q)
– 24-pin 173-mil wide plastic TSSOP (L)
Description
Pericom Semiconductor’s PI3B3384 and PI3B32384 are 3.3 Volt, 10-
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. Switches are turned ON by the Bus Enable (BE) input signal.
Two bus enable signals are provided, one for each of the upper and
lower five bits of the two 10-bit buses. The PI3B32384 is designed
with an internal 25-ohm resistor reducing noise reflection in high-
speed applications.
Pin Configuration
BEA
B0
A0
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
Vcc
B9
A9
A8
B8
B7
A7
A6
B6
B5
A5
BEB
A
4
B
4
A1
B1
B2
A2
A3
B3
24-Pin
Q, L
19
18
17
16
15
14
13
A
5
B
5
B4
A4
GND
A
9
B
9
A
B
BE
A
BE
B
BE
Truth Table
(1)
Function
Disconnect
Connect
Connect
Connect
BE
A
H
L
H
L
BE
B
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
Pin Description
Pin Name
BEA, BEB
A0-A9
B0-A9
GND
V
CC
Description
Bus Enable Inputs (Active LOW)
Bus A
Bus B
Ground
Power
Notes:
1. H = High Voltage Level
X = Don’t Care
L = Low Voltage Level
Hi-Z =High Impedance
1
PS8161F
09/23/04
PERICOM [ PERICOM SEMICONDUCTOR CORPORATION ]
