SN74LS279AD

Latches Overview

The SN74LS279AD is a Texas Instruments logic component belonging to the SN74LS series. It contains four independent S-R latches with non-inverting outputs. The device operates within a supply voltage range of 4.75 V to 5.25 V and features a propagation delay of 27 ns at 5 V. It supports a low-level output current of 32 mA and a high-level output current of -400 uA. The unit is housed in a 16-pin SO-16 surface-mount package and functions reliably across an operating temperature range of 0°C to +70°C.

Latches Feature Summary

• Contains four independent S-R latch circuits for data storage applications
• Features active-low Set and Reset inputs for direct control
• Provides non-inverting outputs that maintain established logic states

Latches Applications

• Data storage in digital logic systems
• Memory buffer circuits
• Control signal latching

Latches Procurement Notes

Verify the specific suffix 'AD' against official manufacturer documentation to confirm the SOIC-16 package type and tape-and-reel availability. Ensure the procurement channel sources directly from authorized distributors or the manufacturer to guarantee authenticity. Cross-reference the datasheet revision date to confirm compliance with current RoHS standards and material declarations before finalizing orders.

Latches Selection Notes

Select this component when designing circuits requiring multiple independent latches within a single integrated circuit. The LS series offers a balance of speed and power consumption suitable for standard TTL logic environments. Verify that the system voltage remains strictly within the 4.75 V to 5.25 V range to ensure proper operation and prevent damage to the internal transistor structures.

Latches Part Context

This part belongs to the widely used 74LS family of bipolar logic devices, known for their compatibility with standard TTL interfaces. The SN74LS279 specifically addresses designs needing multiple independent memory elements without consuming excessive board space compared to discrete solutions.

Latches Replacement Considerations

Check for SN74LS279N (DIP package) if through-hole mounting is required. Verify SN74LS279DR as a potential alternative from other manufacturers offering similar LS specifications.