74HCT280N,652

Overview

The 74HCT280N,652 is a high-speed silicon-gate CMOS logic device manufactured by NXP Semiconductors. It functions as a nine-bit odd or even parity generator and checker. The component features complementary outputs and is designed to be pin-compatible with low-power Schottky TTL (LSTTL) standards. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a propagation delay of 63 ns at a load capacitance of 50 pF. The device is housed in a 14-pin plastic dual in-line package (PDIP).

Feature Summary

• Generates or checks odd/even parity for nine data bits.
• Provides complementary output signals.
• Pin-compatible with low-power Schottky TTL (LSTTL).

Applications

• Parity generation and checking in digital communication systems.
• Data integrity verification in arithmetic circuits.

Procurement Notes

Verify the specific suffix '652' against the manufacturer's current datasheet to confirm packaging and tape-and-reel specifications. Ensure the HCT logic family compatibility matches the target system's input voltage levels. Confirm availability status directly with authorized distributors, as production lifecycles may change.

Selection Notes

Select this component when a nine-bit parity solution is required with LSTTL pin compatibility. The HCT series ensures compatibility with standard 5V logic interfaces. Verify that the PDIP-14 package fits the board layout constraints. Consider the 63 ns propagation delay for timing requirements in the specific application circuit.

Part Context

This part belongs to the 74HCT logic family, which bridges CMOS technology with TTL performance characteristics. The 74HCT280 specifically addresses parity error detection needs. It is widely used in industrial and consumer electronics where reliable data transmission integrity is critical. The device represents a standard solution for multi-bit parity operations.

Replacement Considerations

Compatible alternatives include the 74HC280D from Nexperia and the CD74AC280 from Texas Instruments. Verify pinout compatibility and electrical specifications before substitution.