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SN74LVC245A

TISN74LVC245A

Texas Instruments
Common equivalent octal bus transceiver from a major supplier
Active2,446 in stock
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Overview

The SN74LVC245A is an 8-bit non-inverting bus transceiver designed for 1.65V to 3.6V VCC operation. It facilitates asynchronous communication between data buses, utilizing a direction-control input and an output-enable input to manage 3-state outputs.

Why Choose This Part

This transceiver supports Ioff for partial-power-down mode, preventing damaging backflow current when the device is powered off. It also features 5V tolerant inputs, allowing it to interface with legacy logic levels even when running at lower supply voltages.

Applications

Mixed-Voltage Level Shifting
Translating logic levels between 1.8V, 2.5V, and 3.3V systems while providing 5V tolerance on inputs.
Bus Isolation
Using the 3-state outputs to isolate subsystem buses during power-down or high-impedance states.
High-Drive Buffer
Driving long PCB traces or backplanes with up to 24mA of source/sink current at 3V.

Key Specifications

Logic Type Transceiver, Non-Inverting
Output Type 3-State
Mounting Type Surface Mount
Package / Case 20-SSOP (0.209", 5.30mm Width)
Voltage - Supply 1.65V ~ 3.6V
Number of Elements 1
Operating Temperature -40degC ~ 125degC (TA)
Supplier Device Package 20-SSOP
Current - Output High, Low 24mA, 24mA
Number of Bits per Element 8

Getting Started

When designing with the SN74LVC245A, ensure the Output Enable (OE) pin is tied high through a pull-up resistor to maintain a high-impedance state during power-up or power-down. For prototyping, this device is widely available in the 20-SSOP package, which can be used with standard SSOP-to-DIP adapter boards.

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