74ABT240CSJ

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74ABT240CSJ is an octal buffer and line driver featuring inverting logic with three-state outputs. It operates within a supply voltage range of 4.5V to 5.5V, utilizing a 20-lead Small Outline Package (SOP) with a 5.3mm width. The device provides high drive capability, supporting a source current of 32 mA and a sink current of 64 mA. Propagation delays are specified at 1.6 ns maximum for data-to-output transitions under standard conditions. It includes guaranteed latchup protection and maintains high impedance during power-up and power-down cycles.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Inverting octal buffer and line driver architecture designed for bus-oriented transmitter or receiver applications.
• Three-state outputs that provide high impedance glitch-free bus loading throughout the entire power up and power down cycle.
• Nondestructive hot insertion capability combined with guaranteed latchup protection for enhanced system reliability.

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address driver
• Clock driver
• Bus oriented transmitter or receiver

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package designation M20D corresponds to the Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide when sourcing this component. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure input edge rates meet the minimum requirements of 50 mV/ns for data inputs to maintain signal integrity and proper switching performance.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring high-density PC board layouts with robust driving capabilities. The ABT technology offers improved speed compared to standard ALS series devices while maintaining compatibility with TTL logic levels. Consider the 64 mA sink capability for heavy capacitive loads and verify that the operating temperature range of -40°C to +85°C aligns with the environmental constraints of the target application.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the 74ABT logic family, which utilizes Advanced BiCMOS technology to achieve high-speed operation. The octal configuration consolidates eight independent buffers into a single package, reducing footprint compared to individual gates. As a derivative of Fairchild Semiconductor's portfolio now managed by onsemi, it adheres to established JEDEC standards for mechanical dimensions and electrical characteristics.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes include the 74ABT240CSC (SOIC package) and variants from other manufacturers such as Texas Instruments SN74ABT240ANSR. Verify pinout compatibility and ensure equivalent drive strength and propagation delay specifications match the original design requirements before substitution.

Buffers, Drivers, Receivers, Transceivers FAQ

What is the output behavior when both OE1 and OE2 inputs are high?

When either OE1 or OE2 input is high, all corresponding outputs enter a high-impedance state, effectively disconnecting them from the bus regardless of the input data states.

Does the device support hot insertion?

Yes, the 74ABT240 features nondestructive hot insertion capability, allowing it to be connected to a live bus without causing damage or significant signal glitches.