STMicroelectronics M74HC132B1R

Overview

M74HC132B1R from STMicroelectronics is a high-speed CMOS quad 2-input Schmitt-trigger NAND gate in 14-pin DIP package, featuring 11 ns typical propagation delay at 6 V, ±4 mA symmetrical output drive, and 2–6 V wide supply range. It converts slow-rising/falling input signals into clean digital outputs in noise-prone industrial sensor interfaces and power-on reset circuits.

For engineers reviewing the M74HC132B1R datasheet, M74HC132B1R pinout, M74HC132B1R application, or M74HC132B1R equivalent, key selection criteria include hysteresis voltage (0.8–1.7 V), input threshold symmetry (VP/VN), quiescent current (1 µA max), and DIP-14 mechanical compatibility with legacy 74-series layouts.

Technical Context

The device implements four independent Schmitt-trigger NAND gates using silicon-gate C2MOS technology, each with ~20% VCC hysteresis to reject analog noise on inputs. Input protection diodes and ESD-hardened structure enable robust operation in unshielded environments.

All gates exhibit balanced tPLH/tPHL delays (≤3 ns skew at 4.5 V), symmetrical |IOH|/IOL (≥4 mA), and rail-to-rail output swing (VOH ≥ 5.9 V, VOL ≤ 0.4 V at 6 V/5.2 mA), supporting interoperability with TTL and other HC-family logic.

Key Specifications

Pinout & Package

Package: Plastic DIP-14 (dual in-line package, 0.3" width, through-hole mounting).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schmitt-trigger NAND gate applications.

Compared with SN74HC132N and CD74HC132E, the M74HC132B1R offers guaranteed -55°C operation, tighter hysteresis control, and direct 74HC00 footprint compatibility-critical for military, aerospace, and long-lifecycle industrial retrofits.

Availability

M74HC132B1R is available at Aetrix Electronics and suitable for motor control feedback conditioning, industrial pushbutton debounce, and power-on reset generation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for M74HC132B1R 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, MCU, power, and sensor solutions for industrial, automotive, and consumer markets.

The M74HC132 belongs to ST's high-reliability HC logic family, engineered for noise-immune digital interfacing in harsh environments including factory automation and transportation systems.

FAQ

Is M74HC132B1R compatible with 5 V TTL logic levels?

Yes - at VCC = 5 V, its VIH (3.0 V min) and VIL (1.5 V max) meet TTL input thresholds, and VOH (4.4 V min at 4 mA) and VOL (0.26 V max) satisfy TTL output requirements. No level-shifting circuitry is needed for direct interface with 74LS or 74F devices.

What is the maximum recommended operating frequency for M74HC132B1R?

The device supports reliable operation up to 10 MHz under typical conditions (CL = 50 pF, VCC = 4.5 V). Propagation delay (tPLH/tPHL ≤ 26 ns over temperature) and transition time (tTLH/tTHL ≤ 22 ns) limit usable frequency in synchronous applications; for asynchronous debounce, no hard upper bound applies.

Can M74HC132B1R drive an LED directly?

Yes - with appropriate current-limiting resistor, it can sink up to 4 mA (IOL ≥ 4 mA) per output. At VCC = 5 V and red LED (VF ≈ 1.8 V), a 680 Ω resistor yields ~4.7 mA, staying within spec. Do not exceed 25 mA total ICC or parallel outputs without verifying thermal derating in DIP package.

Does M74HC132B1R require external pull-up resistors on inputs?

No - inputs are CMOS with negligible leakage (±0.1 µA), so pull-ups are unnecessary unless implementing wired-OR logic or open-drain emulation. Unused inputs must be tied HIGH or LOW to prevent floating states that increase ICC and cause unpredictable output behavior.