Nexperia USA Inc. 74HC27PW,118

Overview

74HC27PW,118 from Nexperia is a triple 3-input NOR gate logic IC in TSSOP14 package, operating from 2.0 V to 6.0 V supply, with propagation delay as low as 8 ns at VCC = 6.0 V and 15 pF load, CMOS-level input compatibility, and guaranteed operation from −40 °C to +125 °C - used for combinational logic synthesis in industrial control sequencers and power management state machines.

For engineers reviewing the 74HC27PW,118 datasheet, 74HC27PW,118 pinout, 74HC27PW,118 application, or 74HC27PW,118 equivalent, this page delivers verified pin functions, real-world timing behavior under varying VCC and temperature, static input/output voltage thresholds, thermal derating data for TSSOP14, and validated alternatives for TTL- or CMOS-level logic replacement.

Technical Context

This device implements three independent 3-input NOR gates in a single monolithic CMOS structure, each with diode-clamped inputs enabling safe interfacing to voltages exceeding VCC when used with current-limiting resistors. The logic function follows strict Boolean NOR: output is HIGH only when all three inputs are LOW.

It supports dual logic families: 74HC27PW uses CMOS-level input thresholds (VIH ≥ 3.15 V at VCC = 4.5 V), while its 74HCT27PW variant (same package) provides TTL-compatible inputs (VIH ≥ 2.0 V). Both share identical pinout, package, and dynamic performance characteristics across −40 °C to +125 °C.

Key Specifications

Pinout & Package

TSSOP14 (SOT402-1) package: plastic thin shrink small outline, 14 leads, body width 4.4 mm, 0.65 mm lead pitch, exposed pad not electrically connected.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar triple 3-input NOR gate applications.

Compared with 74HC27PW,118, the SO14 variant offers superior thermal dissipation in convection-cooled assemblies, while the DIP version sacrifices temperature range and input protection for ease of manual assembly - neither matches the TSSOP's density and high-temp reliability for volume production.

Availability

74HC27PW,118 is available at Aetrix Electronics and suitable for industrial control logic, automated test equipment signal conditioning, and motor drive safety interlocks requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC27PW,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 global semiconductor expert delivering high-performance logic, analog, and MOSFET solutions with focus on efficiency, reliability, and sustainability - headquartered in Nijmegen, Netherlands.

This device belongs to Nexperia's 74HC logic family, engineered for low-power, high-noise-immunity digital interfacing in industrial, automotive (non-safety), and consumer applications demanding consistent timing and wide supply tolerance.

FAQ

What is the maximum recommended operating frequency for 74HC27PW,118?

The device has no specified maximum clock frequency because it is a combinational logic IC without internal clocking. Its usable speed is determined by propagation delay: at VCC = 6.0 V and CL = 15 pF, tpd = 8 ns (typ), supporting logic transitions up to ~60 MHz in cascaded configurations with appropriate fanout and layout.

Can 74HC27PW,118 interface directly with 3.3 V microcontroller GPIOs?

Yes - at VCC = 3.3 V, VIH(min) = 2.1 V and VIL(max) = 1.2 V per datasheet Table 6, providing >0.9 V noise margin for standard 3.3 V CMOS outputs. Outputs swing rail-to-rail, ensuring compatible HIGH/LOW levels into 3.3 V inputs.

Does the TSSOP14 package require solder paste stencil adjustments versus SO14?

Yes - SOT402-1 has 0.65 mm lead pitch (vs. 1.27 mm for SO14), requiring finer stencil apertures and tighter placement accuracy. Recommended stencil thickness is 0.12 mm with 1:1 area ratio; IPC-7525B compliant design is mandatory for yield.

Is there a pin-compatible 74HCT27 variant in the same TSSOP14 package?

Yes - 74HCT27PW,118 is the TTL-input compatible version, sharing identical pinout, package, temperature rating (−40 °C to +125 °C), and dynamic performance. It differs only in input threshold levels (VIH = 2.0 V min at VCC = 4.5–5.5 V), enabling direct replacement where legacy TTL signaling is present.