74HCT280PWJ

Overview

The Nexperia 74HCT280PWJ is a 9-bit odd/even parity generator and checker housed in a TSSOP14 package (SOT402-1). It provides dedicated even parity output (PE) and odd parity output (PO). The device operates within a supply voltage range of 4.5 V to 5.5 V, with TTL input levels. Static characteristics specify a maximum low-level output voltage of 0.4 V at 4.0 mA load and a high-level output voltage of 3.7 V minimum at the same load under worst-case temperature conditions. Dynamic performance includes a typical propagation delay of 21 ns from input to PE and 26 ns to PO at 4.5 V.

Feature Summary

• Generates or checks odd and even parity for nine data bits simultaneously
• Word-length expansion capability through cascading parallel devices
• TTL-compatible input logic levels for direct interfacing
• High noise immunity and robust latch-up protection

Applications

• Data transmission error detection systems
• Memory system parity checking
• Digital communication interface validation
• Microcontroller peripheral data integrity verification

Procurement Notes

Verify the suffix 'J' against the manufacturer's current ordering information to confirm specific tape-and-reel or cut-tape packaging details. Ensure the procurement channel sources directly from authorized Nexperia distributors to guarantee component authenticity and traceability. Confirm that the TSSOP14 variant matches the required PCB footprint dimensions specified in the SOT402-1 outline drawing.

Selection Notes

Select this component when a 9-bit parity solution is required with TTL-compatible inputs. The HCT family ensures compatibility with standard 5 V logic systems. Consider the TSSOP14 package if space-constrained surface-mount assembly is necessary. Verify that the application does not require extended voltage ranges beyond the 4.5 V to 5.5 V specification.

Part Context

This part belongs to the Nexperia 74HCT series of high-speed CMOS logic devices. The 74HCT280 specifically addresses parity generation and checking functions. It complements other logic gates by providing specialized data integrity features. The PWJ designation indicates the TSSOP14 plastic thin shrink small outline package variant.

Replacement Considerations

The 74HC280PWJ serves as a functional equivalent but utilizes CMOS input levels rather than TTL levels. Designers must verify input voltage thresholds match the source logic family before substitution.