SN74AS240N

Buffers, Drivers, Receivers, Transceivers Overview

The SN74AS240N is an octal buffer and line driver manufactured by Texas Instruments, belonging to the 74AS logic series. It features eight three-state outputs designed for high-speed bus-oriented applications. The device operates within a supply voltage range of 4.5V to 5.5V and supports through-hole mounting in a 20-pin DIP package. Key electrical characteristics include a low-level output current of 64mA and a high-level output current of -15mA. The propagation delay is specified at 6.5ns with a 50pF load, and it functions reliably across an operating temperature range of 0°C to +70°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides eight three-state outputs for efficient bus management
• Delivers high drive capability suitable for demanding loads
• Ensures fast signal transmission with minimal delay

Buffers, Drivers, Receivers, Transceivers Applications

• High-speed memory mapping systems
• Clock distribution networks
• Bus-oriented architectures requiring isolation

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'N' confirms the 20-pin PDIP package and commercial temperature grade. Confirm RoHS compliance status as legacy AS series availability varies. Ensure pinout compatibility with existing PCB footprints before integration. Check for obsolescence notices or lifecycle changes from the manufacturer.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when bipolar AS speed is required over standard TTL. Compare against HC or ACT families if lower power consumption is prioritized over switching speed. Verify that the 64mA sink current meets the specific load requirements of the target circuit design.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the Texas Instruments 74AS (Advanced Schottky) family, known for superior speed compared to standard 74LS devices. It serves as a direct functional replacement for similar octal buffers in legacy designs requiring robust drive strength and rapid transition times.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

• SN74AS240AN
• SN74BCT240N
• SN74F240N

Buffers, Drivers, Receivers, Transceivers FAQ

Is the SN74AS240N inverting or non-inverting?

The SN74AS240N is an inverting buffer/driver.

What is the maximum low-level output current?

The maximum low-level output current is 64mA.