Diodes Incorporated 74AHC1G32SE-7

Overview

74AHC1G32SE-7 from Diodes Incorporated is a single 2-input positive OR gate in SOT353 package, operating from 2.0V to 5.5V supply, delivering ±8 mA output drive at 5.0V, with Schmitt-trigger inputs for noise immunity, and rated for -40°C to +125°C operation. It performs the Boolean function Y = A + B and is used in logic-level signal combining within space-constrained portable electronics.

For engineers reviewing the 74AHC1G32SE-7 datasheet, 74AHC1G32SE-7 pinout, 74AHC1G32SE-7 application, or 74AHC1G32SE-7 equivalent, key selection considerations include input hysteresis margin, propagation delay under 7.0 ns (VCC = 5V, CL = 15 pF), rail-to-rail output swing, ESD robustness (2 kV HBM), and SOT353 thermal resistance (θJA = 430°C/W).

Technical Context

This device implements a non-inverting OR logic function with CMOS-compatible input thresholds and push-pull output stage. Its Schmitt-trigger inputs provide 0.3–0.5 V hysteresis across VCC = 2–5.5 V, enabling reliable operation with slow-rising or noisy signals.

Designed for low-power logic interfacing, it supports mixed-voltage systems via wide VCC range and exhibits ICC ≤ 40 µA at 5.5 V. Propagation delay is specified down to 0.6 ns (min) and remains stable across temperature (–40°C to +125°C) and load (CL = 15–50 pF).

Key Specifications

Pinout & Package

SOT353 (5-pin, 1.2 mm × 2.1 mm × 0.95 mm) surface-mount package with gull-wing leads, RoHS-compliant lead-free finish, and green molding compound.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G32DBVR and 74AUP1G32GW,125, the 74AHC1G32SE-7 uniquely balances 5 V tolerance, Schmitt noise immunity, and industrial temperature support-making it optimal for mixed-voltage, noise-prone, and extended-temperature embedded control.

Availability

74AHC1G32SE-7 is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB-C power delivery controllers, portable medical monitors, and automotive body control modules requiring stable component supply and long-term manufacturability.

Supply support for 74AHC1G32SE-7 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

The 74AHC logic family delivers high-speed, low-power, and wide-supply CMOS-compatible gates for industrial, computing, and communications applications-designed specifically for robust signal integrity in mixed-voltage systems.

FAQ

Can 74AHC1G32SE-7 operate reliably at 2.0 V supply?

Yes. The device is fully specified from 2.0 V to 5.5 V, with VOH ≥ 1.9 V and VOL ≤ 0.1 V at VCC = 2.0 V and IO = ±50 µA. Propagation delay increases to 9.5 ns (max) at CL = 15 pF, but logic functionality remains guaranteed across the full temperature range.

Is the SOT353 package thermally adequate for continuous 8 mA output current?

Yes. At 8 mA output sink/source and TA = 85°C, junction temperature rise is calculated as ΔTJ = θJA × PD ≈ 430°C/W × (8 mA × 0.44 V) ≈ 15°C, resulting in TJ ≈ 100°C - well below the 150°C absolute maximum. Derating is unnecessary under typical PCB layouts.

Do unused inputs require termination, and if so, how?

Yes. Per datasheet Note 3, unused inputs must be tied to VCC or GND to prevent floating states that increase ICC and cause erratic output switching. Direct connection (not pull-up/down resistors) is recommended to minimize leakage-induced offset and ensure deterministic logic levels.

Does the Schmitt-trigger input affect propagation delay symmetry between rising and falling edges?

No. The datasheet specifies identical tPLH and tPHL values (both equal to tPD). Measured propagation delay variation due to hysteresis is negligible (<0.2 ns) because internal threshold switching occurs rapidly after crossing the upper/lower trip points, preserving edge-to-edge timing predictability.