STMicroelectronics M74HC11B1R

Overview

M74HC11B1R from STMicroelectronics is a high-speed CMOS triple 3-input AND gate in a 14-pin plastic DIP package, operating from 2V to 6V supply, with typical propagation delay of 9ns at 6V and quiescent current ≤1µA at 25°C, used in digital logic control, address decoding, and enable gating in industrial microcontroller interfaces.

For engineers reviewing the M74HC11B1R datasheet, M74HC11B1R pinout, M74HC11B1R application, or M74HC11B1R equivalent, key selection criteria include input voltage thresholds (VIH/VIL), symmetrical output drive (±4mA), noise immunity (28% VCC), wide temperature range (–55°C to +125°C), and DIP-14 compatibility with legacy 74-series layouts.

Technical Context

This device implements three independent 3-input AND functions using silicon gate C2MOS technology, with four-stage buffered output architecture that ensures stable switching and high noise immunity. Input protection circuits guard against ESD and transient overvoltage, supporting robust operation in noisy industrial environments.

It operates across the full industrial temperature range with guaranteed AC performance at –55°C to +125°C, and exhibits balanced tPLH/tPHL delays and matched output impedance (|IOH| = IOL ≥ 4mA), enabling predictable timing in synchronous logic systems without skew compensation.

Key Specifications

Pinout & Package

Package: Plastic DIP-14 (Dual In-line Package), 0.3" wide body, through-hole mounting, JEDEC MS-001 compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar triple 3-input AND gate applications.

Compared with SN74HC11N and CD74HC11E, M74HC11B1R delivers the fastest propagation (9ns typ.), tightest noise margin (28% VCC), and lowest quiescent current (1µA), making it optimal for timing-critical, low-power industrial control where deterministic gate delay is essential.

Availability

M74HC11B1R is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, and legacy microcontroller address decoding requiring stable component supply and long-term obsolescence management.

Supply support for M74HC11B1R 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, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.

The M74HC11 belongs to the 74HC high-speed CMOS logic family, engineered for pin- and function-compatible upgrades of legacy 74LS designs while delivering lower power, wider voltage range, and enhanced noise immunity.

FAQ

Is M74HC11B1R compatible with 5V TTL logic levels?

No - M74HC11B1R is a CMOS device with VIH = 3.15V (min) and VIL = 1.35V (max) at VCC = 4.5V, which meets 5V TTL output compatibility but requires pull-up resistors or level-shifting for direct connection to 5V TTL inputs. Its outputs swing rail-to-rail and can drive TTL loads directly when VCC = 5V.

What is the maximum fan-out for M74HC11B1R driving other 74HC inputs?

At VCC = 6V and TA = 25°C, M74HC11B1R can drive up to 10 standard 74HC inputs (each drawing ≤1µA) while maintaining VOH ≥ 5.9V and VOL ≤ 0.1V. Fan-out drops to ~6 at –55°C due to increased input leakage and reduced drive strength.

Does M74HC11B1R support mixed-voltage operation between inputs and VCC?

No - all inputs must remain within 0V to VCC. The absolute maximum rating specifies VI = –0.5V to VCC + 0.5V, and operation outside 0–VCC violates the recommended condition. Inputs exceeding VCC risk latch-up or damage, even briefly.

Can M74HC11B1R be used in place of M74HC10 (triple 3-input NAND)?

No - M74HC11B1R is an AND gate; M74HC10 is a NAND gate. Their truth tables are complementary. Substitution would invert logic functionality and cause system failure unless external inversion (e.g., additional inverter stage) is added, increasing propagation delay and board area.