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Near-Zero propagation delay
Low On-Resistance switches connect inputs to outputs
2.5V to 3.3V Supply voltage operation
2.5V or 1.8V switching
Packaging (Pb-free & Green available):
鈥?20-pin, 150-mil wide plastic QSOP (Q)
鈥?20-pin, 173-mil wide plastic TSSOP (L)
Description
Pericom Semiconductor鈥檚 PI3VT series of logic circuits are produced
using the Company鈥檚 advanced submicron CMOS technology,
achieving industry leading performance.
The PI3VT3245 is a 2.5V or 3.3V 8-bit, 2-port bus switch
designed with a low On-Resistance (5鈩?. The switches are turned
ON or enabled by the Bus Enable (BE) input signal.
Given a 3.3V supply and an input voltage of 3.3V, the switch
translates to an output voltage of 2.5V. Similarly, when operated
with a 2.5V supply and given 2.5V inputs, the device translates
the outputs to 1.8V.
Applications
鈥?3.3V to 2.5V level shifting (voltage translation)
鈥?2.5V to 1.8V level shifting (voltage translation)
Block Diagram
Pin Configuration
NC
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
CC
BE
B
0
B
1
B
2
B
3
B
4
B
5
B
6
B
7
A
0
B
0
A
0
A
1
A
2
A
7
B
7
A
3
A
4
A
5
BE
A
6
A
7
GND
Truth Table
(1)
Function
Disconnect
Connect
Notes:
1. H = High Voltage Level
L = Low Voltage Level
Hi-Z = High Impedance
BE
H
L
A0-7
Hi-Z
B0-7
Pin Description
Pin Name
BE
A
0
-A
7
B
0
-B
7
V
CC
GND
Bus A
Bus B
Power
Ground
Description
Bus Enable Input (Active Low)
1
PS8530B
08/13/04