PI3VT3306 Datasheet, PDF (1/4 Pages) Pericom Semiconductor Corporation – 2-Bit, 2-Port, Low Voltage Translator Bus Switch

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2-Bit, 2-Port, Low Voltage
Translator Bus Switch
Product Features
• Near zero propagation delay
• Low ON resistance switches connect inputs to outputs
• 2.5V Supply Voltage Operation
• 2.5V or 1.8V switching
• Packages available:
– 8-pin, 173 mil wide plastic TSSOP (L)
– 8-pin, 118 mil wide plastic MSOP (U)
Applications
• 3.3V to 2.5V level shifting (voltage translation)
• 2.5V to 1.8V level shifting (voltage translation)
Product Description
Pericom Semiconductor’s PI3VT series of logic circuits are produced
using the Company’s advanced submicron CMOS technology,
achieving industry leading performance.
The PI3VT3306 is a 2.5V or 3.3V 2-bit, 2-port bus switch designed
with a low ON resistance (5 ohms). The switches are turned ON or
enabled by the Bus Enable (BEn) 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.
Logic Block Diagram
A1
B1
BE1
A2
B2
BE2
Product Pin Configuration
BE1
V_CC
A1
8-Pin
BE2
B1
L, U
B2
GND
A2
Truth Table⁽¹⁾
BEn
An
Bn
V_CC
Function
X*
Hi-Z
Hi-Z
GND Disconnect
H
Hi-Z
Hi-Z
V_CC
Disconnect
L
Bn
An
V_CC
Connect
Notes:
1. H = High Voltage Level
L = Low Voltage Level
Hi-Z = High Impedance
X = Don't Care
* A pull-up resistor should be provided for power-up protection
Product Pin Description
Pin Name
BEn
A2-A1
B2-B1
V_CC
GND
Description
Switch Enable
Bus A
Bus B
Power
Ground
1
PS8533 03/22/01