SN74S280D

Overview

The SN74S280D is a 9-bit odd/even parity generator/checker from the Texas Instruments S Series. It operates on a single 5 V supply and features complementary outputs for both odd and even parity states. The device is housed in a 14-pin Small Outline Integrated Circuit (SOIC) package with a maximum height of 1.75 mm. It supports standard TTL logic levels and includes nine data inputs, two parity outputs, and three control inputs to select between generator, checker, or combined modes.

Feature Summary

• Generates and checks 9-bit odd and even parity simultaneously
• Provides complementary outputs for direct odd and even parity indication
• Operates within standard TTL voltage ranges

Applications

• Data transmission error detection circuits
• Memory system parity checking modules
• Digital communication interface validation

Procurement Notes

Verify the specific ordering suffix against the latest TI Package Option Addendum to confirm lead finish, moisture sensitivity level, and operating temperature range. Ensure the SOIC package dimensions align with the target PCB land pattern requirements before finalizing procurement orders.

Selection Notes

Select this component when a dedicated 9-bit parity solution is required within an S-Series logic environment. Verify that the input signal timing meets the propagation delay specifications for the target application speed. Confirm that the 14-pin SOIC footprint matches the available board space constraints.

Part Context

This part belongs to the SN74S280 family of parity generators/checkers. It shares functional compatibility with other variants such as the SN74LS280D, though electrical characteristics like power consumption and switching speed differ based on the specific logic series technology employed by Texas Instruments.

Replacement Considerations

SN74LS280D