SN74HCT244ANSR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HCT244ANSR is an octal buffer and line driver manufactured by Texas Instruments, belonging to the HCT logic series. It features eight non-inverting channels with three-state outputs housed in a 20-pin SOIC package. The device operates within a supply voltage range of 4.5 V to 5.5 V. Key electrical parameters include a maximum static current of 8 µA and a typical propagation delay of 13 ns at 5 V. Output drive capability is specified as ±6 mA at 5 V, allowing it to drive up to 15 LSTTL loads.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Configured as two independent four-bit buffers or drivers with separate output enable inputs for flexible bus management.
• Provides three-state outputs that facilitate direct connection to bus lines and memory address registers without external drivers.
• Features TTL-compatible input thresholds, ensuring seamless interface with standard TTL logic systems.

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address buffering in computer systems
• Clock signal distribution and driving
• Bus-oriented receiver and transmitter circuits

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'ANSR' against the manufacturer's official documentation to confirm the exact package variant (SOIC) and tape-and-reel packaging configuration. Ensure compatibility with the required operating temperature range of -40°C to +85°C for your specific application environment before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when interfacing between 5V CMOS logic and TTL loads is required. The HCT series offers lower power consumption compared to older HC variants while maintaining TTL input compatibility. Consider the SOIC package dimensions if space constraints exist on the printed circuit board layout.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74HCT244 family of octal buffers. Variants such as SN74HCT244N (PDIP) or SN74HCT244DBR (SSOP) share identical logical functionality but differ in physical packaging and mounting style. The 'A' prefix typically denotes improved specifications or revisions within the series.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct pin-compatible substitutes include SN74HCT244DR and SN74HCT244NSR from Texas Instruments. Other manufacturers offering equivalent HCT octal buffers with three-state outputs may serve as alternatives, provided voltage and timing specifications match the design requirements.