Nexperia USA Inc. 74HC374PW,118

Overview

74HC374PW,118 from Nexperia is an octal positive-edge-triggered D-type flip-flop with non-inverting 3-state outputs, designed for bus interface and data latching in digital systems. It operates across 2.0 V to 6.0 V supply, features independent register and output buffer control via CP and OE pins, and supports industrial temperature range (−40 °C to +125 °C) in TSSOP20 package - used in microcontroller peripheral buffering, address/data bus isolation, and synchronous I/O expansion.

For engineers reviewing the 74HC374PW,118 datasheet, 74HC374PW,118 pinout, 74HC374PW,118 application, or 74HC374PW,118 equivalent, key selection considerations include propagation delay (15 ns typ @ 4.5 V), 3-state enable/disable timing (15–18 ns), input compatibility (CMOS-level), supply voltage flexibility (2.0–6.0 V), and thermal derating behavior in TSSOP20.

Technical Context

This device implements eight independent D-type latches synchronized to the rising edge of CP, with all outputs gated by a common active-low OE signal. Each flip-flop samples its D-input only during the LOW-to-HIGH clock transition, meeting set-up (12 ns min @ 4.5 V) and hold (5 ns min) requirements.

The 3-state output buffer operates independently of latch state: OE HIGH forces Q0–Q7 into high-impedance mode without altering stored data. Input clamp diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors.

Key Specifications

Pinout & Package

TSSOP20 plastic thin shrink small outline package (SOT360-1), 20-pin, body width 4.4 mm, 0.65 mm pitch - optimized for high-density PCB layouts with improved thermal dissipation vs SO20.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal D-type latch applications.

Compared with 74HC374PW,118, the 74HCT374PW,118 offers tighter input threshold alignment with legacy 5 V TTL, while SN74HC374PWR provides alternate sourcing with nearly identical electrical behavior but distinct thermal derating characteristics requiring board-level validation.

Availability

74HC374PW,118 is available at Aetrix Electronics and suitable for microcontroller I/O expansion, industrial sensor data buffering, and legacy system bus isolation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC374PW,118 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 leading semiconductor manufacturer headquartered in Nijmegen, Netherlands, specializing in high-volume logic, discrete, and MOSFET solutions with emphasis on reliability, efficiency, and automotive-grade quality.

The 74HC374 belongs to Nexperia's 74HC logic family - engineered for low-power, high-noise-immunity digital interfacing in industrial, consumer, and communication equipment where rail-to-rail CMOS compatibility and wide VCC range are critical.

FAQ

What is the maximum clock frequency supported by the 74HC374PW,118?

The 74HC374PW,118 supports a maximum clock frequency of 77 MHz at VCC = 5.0 V and CL = 15 pF, and 83 MHz at VCC = 6.0 V under the same load. This is determined by propagation delay (14 ns min @ 6.0 V) and set-up/hold timing margins, making it suitable for high-speed synchronous bus applications up to ~80 MHz.

Can the 74HC374PW,118 operate reliably at 3.3 V supply?

Yes - the 74HC374PW,118 is fully specified from 2.0 V to 6.0 V, including 3.3 V operation. At VCC = 3.3 V, VIH is guaranteed ≥2.31 V and VIL ≤1.09 V, providing >1.2 V noise margin. Propagation delay increases to ~22 ns (typ), and fmax reduces to ~45 MHz, remaining well-suited for 3.3 V embedded systems.

How does the OE pin behave during power-up or brown-out conditions?

The OE pin has no internal pull-up or pull-down; it must be actively driven to avoid undefined output states. During power-up, if OE floats HIGH, all outputs enter high-impedance mode - safe for bus sharing. However, uncontrolled OE can cause bus contention if pulled LOW prematurely; external pull-up (e.g., 10 kΩ to VCC) is recommended for deterministic startup behavior.

Is the 74HC374PW,118 pin-compatible with the 74HC574?

No - although both are octal D-type latches, the 74HC574 uses a different pinout: its OE is on pin 13 and CP on pin 11, whereas 74HC374 places OE on pin 1 and CP on pin 11. Additionally, 74HC574 has inverted outputs (Q̅), while 74HC374 has non-inverting outputs (Q). Layout and firmware changes are required for substitution.