Nexperia USA Inc. 74AHC32D,118

Overview

74AHC32D,118 from Nexperia is a quad 2-input OR gate logic IC in SO14 package, operating from 2.0 V to 5.5 V supply, with overvoltage-tolerant inputs up to 5.5 V, balanced propagation delays (max 7.0 ns at 5 V/15 pF), and Schmitt-trigger inputs for noise immunity - used in voltage-level translation and digital signal routing in industrial control I/O modules.

For engineers reviewing the 74AHC32D,118 datasheet, 74AHC32D,118 pinout, 74AHC32D,118 application, or 74AHC32D,118 equivalent, this device is selected for mixed-voltage interface design, TTL-to-CMOS signal conditioning, low-power combinational logic, and robust input noise rejection in embedded systems.

Technical Context

This device implements four independent 2-input OR gates in a single monolithic CMOS structure, with all inputs tolerant to 5.5 V regardless of VCC level - enabling bidirectional level shifting between 3.3 V and 5 V domains. Each gate exhibits matched tPLH/tPHL propagation delays and operates across -40 °C to +125 °C.

Input stages integrate Schmitt-trigger hysteresis (typ. 0.3 V at VCC = 5 V), improving noise margin in noisy environments. Static power consumption is ultra-low (ICC ≤ 40 μA at VCC = 5.5 V, -40 °C to +125 °C), and ESD protection meets HBM >2000 V and CDM >1000 V per JEDEC JS-001/JS-002.

Key Specifications

Pinout & Package

74AHC32D,118 uses the SOT108-1 (SO14) plastic small outline package: 14-lead, 3.9 mm body width, 1.27 mm lead pitch, gull-wing leads, and standard JEDEC MS-012 footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74AHCT32D,118, the 74AHC32D,118 enables true mixed-voltage operation without external components, while SN74LVC32APWR offers better drive capability in low-voltage-only systems but sacrifices interface flexibility and ruggedness.

Availability

74AHC32D,118 is available at Aetrix Electronics and suitable for industrial automation controllers, automotive body electronics, medical device user interfaces, and point-of-sale security subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74AHC32D,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, discrete, and MOSFET solutions optimized for reliability and energy efficiency in industrial, automotive, and consumer applications.

The 74AHC series targets high-speed, low-power CMOS logic design with enhanced robustness - specifically engineered for voltage translation, noise-immune signal conditioning, and wide-operating-range digital interfacing in harsh environments.

FAQ

Is 74AHC32D,118 compatible with 3.3 V microcontrollers driving 5 V peripherals?

Yes. Its overvoltage-tolerant inputs accept up to 5.5 V regardless of VCC level, allowing direct connection of 5 V peripheral status lines to a 3.3 V-powered 74AHC32D,118. Outputs swing rail-to-rail (0 V to VCC), so a 3.3 V supply yields 3.3 V logic-high outputs compatible with 3.3 V MCU inputs.

What is the maximum output current per pin, and how does it vary with supply voltage?

The absolute maximum output current is ±25 mA per pin (per Table 4), but recommended operating conditions specify ±8.0 mA for VOH/VOL compliance at VCC = 4.5 V. At VCC = 3.0 V, VOH drops to ≥2.58 V at -4.0 mA, and VOL rises to ≤0.36 V at +4.0 mA - confirming usable drive strength across the full 2.0–5.5 V range.

Does the SO14 package (SOT108-1) require thermal pad soldering or special PCB layout considerations?

No. The SOT108-1 package has no exposed thermal pad; thermal dissipation relies on copper pour connected to pins 7 (GND) and 14 (VCC). For 500 mW max power, use ≥25 mm² of 1 oz copper on both top and bottom layers tied to GND/VCC pins via ≥4 thermal vias each - no solder mask defined thermal pad is needed or specified.

How does Schmitt-trigger input action improve performance in noisy environments?

Schmitt-trigger inputs provide hysteresis (~0.3 V at VCC = 5 V), meaning the threshold for rising-edge detection (VIH ≈ 3.85 V) differs from falling-edge detection (VIL ≈ 1.65 V). This prevents multiple toggles during slow or noisy signal transitions - critical for reliable switch debouncing, sensor signal conditioning, and EMI-prone industrial wiring.