SN74LS244ML1

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LS244ML1 is an octal buffer and line driver manufactured by ON Semiconductor, belonging to the LS TTL series. It features eight independent true-output buffers organized into two groups of four, each controlled by a separate output enable input. The device provides three-state outputs, allowing connection to bus systems without conflict when disabled. It operates within a supply voltage range of 4.75 V to 5.25 V, with a typical rating of 5 V. The component is housed in a 20-pin plastic small outline package (SOP) with through-hole terminals, suitable for commercial temperature ranges from 0°C to 70°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides eight independent buffering channels with true logic output polarity
• Features three-state outputs to prevent bus contention when disabled
• Includes dual low-active output enable controls for group management
• Compatible with standard TTL logic families for interface applications

Buffers, Drivers, Receivers, Transceivers Applications

• Microprocessor address and data bus driving
• Signal isolation between circuit stages
• Level matching in mixed-logic systems
• Memory address driver circuits

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the manufacturer designation carefully, as the part number prefix SN typically indicates Texas Instruments origin while the brand specified is onsemi. Confirm that the ML1 suffix corresponds to the specific SOP-20 plastic package variant. Ensure the component meets RoHS compliance requirements if applicable to your assembly process. Cross-reference the datasheet revision to confirm electrical characteristics match your design specifications before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring high-drive capability for TTL loads. The LS technology offers a balance between speed and power consumption compared to standard TTL. Consider the three-state feature for bus-oriented architectures where multiple devices share common lines. Verify that the operating voltage range aligns with your system's 5V supply tolerance. Evaluate thermal dissipation requirements if driving heavy capacitive loads.

Buffers, Drivers, Receivers, Transceivers Part Context

This device is part of the widely used 74LS series of logic integrated circuits, known for their compatibility with early microprocessor systems. The octal buffer configuration allows efficient handling of wide data buses. It serves as a fundamental building block for digital interface designs requiring signal regeneration and isolation. The SOP-20 package facilitates surface-mount or through-hole integration depending on the specific manufacturing variant.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

• SN74LS244
• SN74HC244
• SN74ACT244

Buffers, Drivers, Receivers, Transceivers FAQ

How are the eight outputs controlled?

The outputs are divided into two groups of four. Each group is independently controlled by a dedicated low-active output enable pin, allowing flexible partitioning of the buffer channels.

What is the state of the outputs when enabled inputs are inactive?

When the output enable pins are held high, the outputs enter a high-impedance state, effectively disconnecting them from the circuit to prevent interference with other bus devices.