SN74LS280NSR

Overview

The SN74LS280NSR is a Low-Power Schottky (LS) TTL logic device functioning as a universal 9-bit parity generator and checker. It provides complementary odd and even parity outputs for nine data lines, facilitating flexible system integration. The component operates within a standard supply voltage range of 4.75 V to 5.25 V. Key electrical characteristics include a typical propagation delay of 33 ns and a maximum power dissipation of 80 mW. Designed with buffered inputs, it reduces drive requirements to one LS unit load per input.

Feature Summary

• Generates either odd or even parity for nine data lines simultaneously
• Features complementary outputs to support both odd and even parity configurations
• Buffered inputs lower the drive requirements to one LS unit load
• Cascadable design allows for expansion beyond nine bits

Applications

• Data transmission systems requiring error detection
• Memory systems utilizing parity checking
• Computer arithmetic logic units
• Industrial control systems for data integrity verification

Procurement Notes

Verify that the ordering suffix 'SR' corresponds to the tape-and-reel packaging format specified in the official Texas Instruments datasheet SDLS152. Confirm the device meets the required Low-Power Schottky TTL specifications and operating temperature ranges before finalizing procurement orders.

Selection Notes

Select this component when a 9-bit parity solution is required within a Low-Power Schottky logic family environment. Ensure the application supports the 4.75 V to 5.25 V supply voltage range and requires buffered inputs to minimize loading on preceding stages.

Part Context

This part belongs to the SN54/74LS280 series of 9-bit odd/even parity generators/checkers manufactured by Texas Instruments. It is part of the broader 74LS logic family, designed for compatibility with standard TTL circuits while offering improved speed and lower power consumption compared to standard LS devices.

Replacement Considerations

The SN74LS280 can be substituted for the LS180 to achieve improved performance. Verify pinout compatibility and electrical specifications against the original design requirements when considering alternative parity generator ICs.