SN74LS244NS

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LS244NS is an octal buffer and line driver featuring three-state outputs, manufactured by Texas Instruments. It operates within a supply voltage range of 4.75 V to 5.25 V. The device provides high fan-out and enhanced fan-in capabilities with a noise margin of 400 mV. It supports low impedance loads down to 133 Ω and utilizes PNP inputs to reduce DC loading. The component is housed in a 20-pin PDIP package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal configuration with independent three-state outputs for bus isolation
• PNP input structure designed to minimize DC loading on driving circuits
• Enhanced noise immunity providing 400 mV noise margin
• High fan-out capability suitable for driving multiple logic inputs

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address register buffering
• Clock signal distribution
• Bus transceiver interface drivers
• Impedance matching for transmission lines

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'NS' against the manufacturer's official documentation to confirm the exact package variant and tape/reel specifications. Ensure the ordering information matches the required PDIP-20 form factor and temperature range. Cross-reference the datasheet revision to confirm pinout compatibility with existing designs.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when TTL-level buffering with high drive strength is required. The LS series offers a balance of speed and power consumption. Consider the 400 mV noise margin for noisy environments. Verify that the 5V supply constraint aligns with the system architecture before integration.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the standard 74LS logic family, widely used in digital systems requiring reliable TTL interfacing. The SN74LS244NS specifically addresses applications needing eight-channel buffering with tri-state control. It serves as a fundamental building block for data bus architectures and memory expansion circuits.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LS244N: Identical function in PDIP-20 package. SN74LS244DW: Equivalent performance in SOIC-20 surface mount package. SN74LS244DWR: Equivalent performance in SOIC-20 tape and reel packaging.