PI3VT3245 Datasheet, PDF (1/5 Pages) Pericom Semiconductor Corporation – 8-Bit, 2-Port, Low Voltage Translator Bus SWITCH

Features
• 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):
– 20-pin, 150-mil wide plastic QSOP (Q)
– 20-pin, 173-mil wide plastic TSSOP (L)
Applications
• 3.3V to 2.5V level shifting (voltage translation)
• 2.5V to 1.8V level shifting (voltage translation)
Block Diagram
A0
B₀
A₇
B7
BE
PI3VT3245
8-Bit, 2-Port, Low Voltage
Translator Bus Switch
Description
Pericom Semiconductor’s PI3VTseries of logic circuits are produced
using the Company’s 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 (5Ω). 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.
Pin Configuration
NC 1
A0
2
A₁
3
A2
4
A₃
5
A4
6
A5
7
A6
8
A7
9
GND 10
20
VCC
19 BE
18 B₀
17 B1
16 B₂
15 B3
14 B4
13 B5
12 B6
11 B₇
Truth Table⁽¹⁾
Function
BE
Disconnect
H
Connect
L
Notes:
1. H = High Voltage Level
L = Low Voltage Level
Hi-Z = High Impedance
A0-7
Hi-Z
B0-7
Pin Description
Pin Name
Description
BE
Bus Enable Input (Active Low)
A₀-A₇
Bus A
B₀-B₇
Bus B
V_CC
Power
GND
Ground
1
PS8530B
08/13/04