SN74ALS243ANS

Overview

The SN74ALS243ANS is a bus transceiver manufactured by Texas Instruments, belonging to the ALS logic series. It features four non-inverting bits with three-state outputs in a 14-pin SOIC package. The device operates within a supply voltage range of 4.5V to 5.5V and supports an operating temperature range from 0°C to +70°C. It provides bidirectional data transmission capabilities suitable for digital systems requiring controlled signal flow.

Feature Summary

• Provides bidirectional data transmission between two buses using four non-inverting bits.
• Features three-state outputs that allow connection to a common data line without interference.
• Utilizes Advanced Low-Power Schottky (ALS) technology for improved speed and power efficiency.

Applications

• Memory mapping control
• Clock drivers
• Bus-oriented transmissions

Procurement Notes

Verify the manufacturer part number SN74ALS243ANS against official Texas Instruments documentation to ensure authenticity. Confirm the package type is 14-SOIC and check for any specific ordering suffixes that may indicate tape-and-reel packaging versus tube quantities. Ensure compliance with RoHS directives if required for your application.

Selection Notes

Select this component when designing systems requiring bidirectional bus interfacing with low power consumption. The ALS series offers a balance of speed and power dissipation. Ensure the system voltage matches the 4.5V to 5.5V operating range and consider the thermal requirements for the specified temperature range.

Part Context

This component is part of the SN74ALS family of logic integrated circuits. It serves as a buffer and driver solution for digital logic applications. The 'A' suffix typically denotes the advanced version of the standard 74LS series, offering better performance characteristics while maintaining pin compatibility with older designs.

FAQ

Is the SN74ALS243ANS an inverting or non-inverting transceiver?

It is a non-inverting transceiver, meaning the output signal follows the input signal polarity.

What is the maximum supply voltage for this device?

The maximum supply voltage is 5.5V.