STMicroelectronics M74HC151YRM13TR

Overview

M74HC151YRM13TR from STMicroelectronics is a high-speed CMOS 8-channel data selector/multiplexer in automotive-grade SO16 package, delivering tPD = 17 ns (typ.) at 6 V, ICC ≤ 4 µA at 25 °C, and operation across 2–6 V supply. It selects one of eight digital inputs (D0–D7) using three address lines (A/B/C), with complementary Y/W outputs enabled by active-low STROBE - used in automotive body control modules for signal routing between sensor banks and microcontroller ADCs.

For engineers reviewing the M74HC151YRM13TR datasheet, M74HC151YRM13TR pinout, M74HC151YRM13TR application, or M74HC151YRM13TR equivalent, key selection criteria include automotive temperature range (-40 °C to +125 °C), AEC-Q100 qualification, SO16 mechanical compatibility, and propagation delay matching across D→Y, D→W, and STROBE→Y paths.

Technical Context

The device implements a single-pole, 8-throw analog/digital multiplexer function using silicon gate C2MOS technology, with fully buffered inputs and symmetrical output drive (|IOH| = IOL ≥ 4 mA). Its logic diagram confirms dual complementary outputs (Y and W) derived from the same internal selection tree, enabling simultaneous true and inverted data routing without external inverters.

All inputs feature ESD protection (CDM: 1 kV, HBM: 2 kV, MM: 200 V), and the strobe-controlled enable architecture ensures deterministic output states: STROBE high forces W = high / Y = low regardless of address or data inputs - critical for fail-safe bus arbitration in automotive power distribution units.

Key Specifications

Pinout & Package

Package: SO16 (Plastic Small Outline, 16-pin, 300 mil width), automotive-grade, tape-and-reel packaging (M13TR), ECOPACK® compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-channel multiplexer applications.

Compared with SN74HC151DR and MC74HC151ADTG, M74HC151YRM13TR uniquely delivers AEC-Q100 Grade 1 validation, guaranteed -40 °C to +125 °C performance, and full traceability - making it the sole choice for ASIL-B–compatible body electronics where functional safety evidence is mandatory.

Availability

M74HC151YRM13TR is available at Aetrix Electronics and suitable for automotive body control modules, engine management systems, and lighting control units requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for M74HC151YRM13TR 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, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and analog chips for automotive, industrial, and consumer markets.

The M74HC151 belongs to ST's automotive-qualified HC logic family, engineered specifically for robust signal routing in harsh-temperature vehicle subsystems where pin-compatible legacy compatibility and AEC-Q100 compliance are mandatory.

FAQ

Is M74HC151YRM13TR pin-compatible with standard 74HC151 devices?

Yes - it uses identical SO16 pinout and logic function mapping as industry-standard 74HC151, including D0–D7, A/B/C, STROBE, Y, W, VCC, and GND assignments. The automotive qualification does not alter pin configuration or electrical behavior under recommended operating conditions.

What is the maximum clock frequency supported for reliable data selection?

Based on tPD = 17 ns (typ.) at 6 V and tPLH/tPHL ≤ 32 ns (max) across all paths, the device supports reliable operation up to 20 MHz for synchronous address changes aligned with STROBE transitions - verified under CL = 50 pF load per AC characterization.

Does the STROBE pin support dynamic switching during address changes?

Yes - STROBE can be toggled asynchronously relative to A/B/C transitions. When STROBE goes low, output Y/W reflects the currently latched address; when high, both outputs enter defined states (Y = low, W = high) regardless of address stability - enabling glitch-free bus arbitration.

Can M74HC151YRM13TR interface directly with 3.3 V microcontrollers?

Yes - with VCC = 3.3 V, VIH = 2.31 V (min) and VIL = 1.09 V (max) ensure full compatibility with 3.3 V CMOS logic thresholds, and output VOH ≥ 3.15 V / VOL ≤ 0.40 V at 4 mA drive meet 3.3 V interface requirements per Table 6 DC specs.