Nexperia USA Inc. 74HCT32PW,118

Overview

74HCT32PW,118 from Nexperia is a quad 2-input OR gate in TSSOP14 package, designed for TTL-level input compatibility (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 5 V), with propagation delay of 11–36 ns across temperature and supply range, and operates from -40 °C to +125 °C. It delivers symmetrical output drive (±4 mA), low static current (≤40 μA), and ESD robustness (HBM >2000 V), used in digital logic interfacing, bus arbitration, and control signal combining in industrial PLC I/O modules.

For engineers reviewing the 74HCT32PW,118 datasheet, 74HCT32PW,118 pinout, 74HCT32PW,118 application, or 74HCT32PW,118 equivalent, key selection criteria include TTL-compatible input thresholds, guaranteed operation up to +125 °C, TSSOP14 thermal performance (7.3 mW/K derating above 81 °C), and pin-for-pin compatibility with 74HC32PW in HC-logic systems requiring CMOS-level inputs.

Technical Context

The 74HCT32PW,118 implements four independent OR gates using silicon-gate CMOS technology with TTL-compatible input circuitry-enabling direct connection to legacy 5 V TTL outputs without level shifting. Its input clamp diodes allow safe interface to voltages exceeding VCC when used with current-limiting resistors.

Each gate exhibits balanced propagation delays (tPHL ≈ tPLH) and transition times (tTHL ≈ tTLH), ensuring predictable timing in synchronous logic trees. The device supports rail-to-rail output swing (VOH ≥ 3.7 V, VOL ≤ 0.4 V at IO = ±4 mA, VCC = 4.5 V) and maintains stable DC characteristics across its full operating temperature range (-40 °C to +125 °C).

Key Specifications

Pinout & Package

TSSOP14 plastic thin shrink small outline package (SOT402-1), 14-lead, body width 4.4 mm, 0.65 mm pitch, exposed pad optional (non-functional ground tie).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad 2-input OR gate applications.

Compared with 74HC32PW,118, the 74HCT32PW,118 offers superior TTL interoperability and thermal range but sacrifices supply flexibility; versus SN74LS32DR, it delivers 99% lower quiescent power and 10× higher temperature rating at identical logic function and pinout.

Availability

74HCT32PW,118 is available at Aetrix Electronics and suitable for industrial PLC I/O conditioning, automotive body control logic, test equipment signal gating, and medical safety interlocks requiring stable component supply across extended temperature and long production lifecycles.

Supply support for 74HCT32PW,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 focused on essential efficiency technologies, delivering high-performance logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74HCT32PW,118 belongs to Nexperia's industry-standard 74-series logic family, engineered specifically for seamless integration between legacy TTL systems and modern CMOS-based controllers while maintaining industrial-grade reliability and thermal resilience.

FAQ

Is the 74HCT32PW,118 pin-compatible with the 74HC32PW,118?

Yes - both share identical TSSOP14 pinout (SOT402-1), including 1A–4A, 1B–4B, 1Y–4Y, GND (pin 7), and VCC (pin 14). However, input threshold differences mean direct substitution requires verification of source logic family: 74HCT32PW,118 accepts TTL outputs directly; 74HC32PW,118 requires CMOS-level drivers or level shifters.

What is the maximum recommended operating frequency for reliable OR-gate operation?

The 74HCT32PW,118 has no clock; it is combinational logic. Maximum usable frequency depends on propagation delay and system timing margins. With tPD = 11–36 ns and CL = 50 pF, it reliably supports data rates up to ~15 MHz in cascaded logic paths. For 20 MHz+ applications, verify setup/hold timing against downstream flip-flop specifications.

Does the exposed pad on the TSSOP14 package require soldering or grounding?

No - the exposed pad in SOT402-1 is non-functional and electrically isolated. Nexperia documentation states there is "no electrical or mechanical requirement to solder the pad." If soldered, it must remain floating or connect to GND; it provides no thermal benefit in standard PCB layouts and is omitted in most production designs.

Can the 74HCT32PW,118 operate at 3.3 V supply?

No - the 74HCT32PW,118 is specified only for 4.5–5.5 V operation per JEDEC JESD8C. At 3.3 V, input thresholds are not guaranteed, VOH drops below 2.4 V, and timing parameters become invalid. For 3.3 V systems, use 74LVC32 or 74AUP32 with appropriate VCC and input compatibility.