SN74ACT240DWR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ACT240DWR is an octal buffer and line driver from the Texas Instruments ACT logic family, housed in a 20-pin SOIC (DW) package. It operates within a supply voltage range of 4.5V to 5.5V. The device features two independent 4-bit buffers with separate output-enable inputs and inverted outputs. Electrical characteristics include a maximum propagation delay of 8.5ns at 5V, high-level output current of -24mA, and low-level output current of 24mA. It supports input voltages up to 5.5V and functions reliably across an operating temperature range of -40°C to +85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Balanced CMOS push-pull outputs provide similar sourcing and sinking capabilities for improved signal integrity.
• Inputs are TTL-compatible and accept voltages up to the maximum VCC level.
• Separate output-enable inputs allow independent control of each 4-bit section.

Buffers, Drivers, Receivers, Transceivers Applications

• Smartphone handset circuits
• Network switch interfaces
• Health and fitness wearable devices

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'DWR' corresponds to the SOIC-20 tape-and-reel packaging configuration. Confirm that the active production status aligns with long-term availability requirements. Ensure the lead finish matches system soldering specifications. Cross-reference the manufacturer part number against authorized distributor catalogs to validate authenticity and traceability before finalizing procurement orders.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring octal bus drivers with 3-state outputs and TTL-compatible inputs. The ACT series offers a balance of speed and power consumption suitable for 5V logic applications. Consider the SOIC package dimensions for PCB layout constraints. Verify that the required drive current does not exceed the absolute maximum ratings to prevent device damage during operation.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SNx4ACT240 family of octal buffers and line drivers. It is designed to improve performance and density in 3-state memory address drivers, clock drivers, and bus-oriented receivers. The ACT series utilizes advanced CMOS technology to achieve faster switching speeds compared to standard 74LS logic while maintaining lower power dissipation.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74ACT240DBR (SSOP-20)

Buffers, Drivers, Receivers, Transceivers FAQ

How are the outputs controlled?

The device contains two 4-bit buffers with separate output-enable (OE) inputs. When OE is low, the device passes inverted data from the A inputs to the Y outputs. When OE is high, the outputs enter a high-impedance state.

What happens to unused inputs?

All unused inputs must be held at VCC or GND to ensure proper device operation. Floating inputs can cause excessive current consumption or unpredictable behavior.