Nexperia USA Inc. 74HC280D-Q100J

Overview

74HC280D-Q100J from Nexperia is a 9-bit automotive-grade odd/even parity generator/checker in SO14 package, operating from 2.0 V to 6.0 V supply, delivering simultaneous HIGH-active even (PE) and odd (PO) parity outputs with propagation delay as low as 16 ns at VCC = 6.0 V and CL = 50 pF, used for error detection in CAN, LIN, and diagnostic bus subsystems of engine control units.

For engineers reviewing the 74HC280D-Q100J datasheet, 74HC280D-Q100J pinout, 74HC280D-Q100J application, or 74HC280D-Q100J equivalent, this device supports cascaded parity expansion up to 17-bit words, meets AEC-Q100 Grade 1 (-40 °C to +125 °C), and provides TTL-compatible input thresholds only in its HCT variant - confirming strict CMOS-level input compatibility for this HC version.

Technical Context

This device implements combinational logic to count HIGH states across nine data inputs (I0–I8) and assert PE when the count is even, PO when odd - no internal latching or clocking. Its dual-output architecture enables real-time parity validation without external XOR gates.

Input clamp diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors, and its static VIH/VIL thresholds scale with VCC (e.g., VIH ≥ 4.2 V at VCC = 6.0 V), ensuring robust noise immunity across automotive voltage transients.

Key Specifications

Pinout & Package

Supplied in SO14 plastic small outline package (SOT108-1), 3.9 mm body width, 14-lead surface-mount format with standard 1.27 mm pitch and gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 9-bit parity generator/checker applications.

Compared with 74HCT280D-Q100J, this 74HC280D-Q100J provides tighter VIH/VIL margins at 3.3 V operation and lower ICC, while SN74LS280DR lacks automotive qualification and consumes 20× more quiescent power - making the HC variant optimal for modern low-voltage, high-reliability vehicle networks.

Availability

74HC280D-Q100J is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera interfaces, and electric power steering systems requiring stable component supply across extended automotive temperature ranges.

Supply support for 74HC280D-Q100J includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert specializing in high-performance, high-reliability logic, discrete, and MOSFET solutions, with core R&D in Nijmegen, Netherlands.

This device belongs to Nexperia's automotive-qualified HC logic family, engineered specifically for error-resilient data path integrity in safety-critical vehicle subsystems operating across -40 °C to +125 °C.

FAQ

What is the maximum clock rate supported by 74HC280D-Q100J for reliable parity generation?

The device has no internal clock; it is purely combinational. Its 16 ns max propagation delay at VCC = 6.0 V and CL = 50 pF sets a practical upper bound of ~30 MHz for data valid-to-output timing in synchronous systems. For asynchronous use, input setup/hold times are not specified - inputs may change at any time, with outputs settling within tpd.

Can 74HC280D-Q100J be used to generate parity for more than 9 bits?

Yes - the datasheet specifies cascading up to nine devices by connecting their PE outputs to the I0–I8 inputs of a final-stage 74HC280D-Q100J. This supports up to 17-bit parity generation (9 + 8), verified in Figure 5. No additional glue logic or timing constraints apply beyond standard fan-out limits.

Does 74HC280D-Q100J require external pull-up or pull-down resistors on PE/PO outputs?

No - outputs are push-pull CMOS with full rail-to-rail swing and ±4.0 mA drive capability. Pull-ups are unnecessary unless interfacing to open-drain inputs or implementing wired-AND logic. Unused inputs (I0–I8) must be tied HIGH or LOW - floating inputs cause excessive ICC and potential oscillation.

How does the input clamping diode functionality affect PCB layout for 74HC280D-Q100J?

The integrated input clamp diodes allow direct connection to voltages up to 12 V when series current-limiting resistors (≥1 kΩ typical) are used - enabling simplified interface to wake-up lines or battery-sensed signals. Layout must ensure resistor placement adjacent to the IC pin, with minimal trace inductance, to prevent overshoot-induced latch-up during fast transients.