STMicroelectronics M74HC253RM13TR

Overview

M74HC253RM13TR from STMicroelectronics is a high-speed CMOS dual 4-channel multiplexer with 3-state outputs, pin- and function-compatible with standard 74-series 253 logic. It features symmetrical output impedance (|IOH| = IOL = 4 mA min), wide supply range (2–6 V), and low quiescent current (ICC = 4 µA max at 25°C), enabling use in battery-powered data routing and digital control systems.

For engineers reviewing the M74HC253RM13TR datasheet, M74HC253RM13TR pinout, M74HC253RM13TR application, or M74HC253RM13TR equivalent, key selection criteria include propagation delay (tPD = 16 ns typ. at 6 V), high-noise immunity (VNIH/VNIL = 28% VCC min), 3-state enable timing (tPZL/tPLZ ≤ 30 ns at 6 V), and TSSOP-16 package compatibility with space-constrained PCB layouts.

Technical Context

The M74HC253RM13TR implements two independent 4:1 multiplexers sharing common address inputs (A, B) and individual active-low strobe enables (1G, 2G). Each section routes one of four data inputs (C0–C3) to its respective 3-state output (1Y, 2Y) based on binary address state, with output disabled to high-impedance when its strobe is high.

Designed using silicon gate C2MOS technology, it delivers balanced propagation delays (tPLH ≅ tPHL), symmetrical drive strength, and robust ESD protection on all inputs. Its operation across -55°C to +125°C and 2–6 V supply supports industrial control and automotive body electronics where voltage tolerance and thermal stability are critical.

Key Specifications

Pinout & Package

Package: TSSOP-16 (4.9 × 6.4 mm, 0.65 mm pitch), lead-free and RoHS-compliant per M74HC253RM13TR ordering code.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual 4:1 multiplexer applications.

Compared with SN74HC253DR and 74LVC253PW, the M74HC253RM13TR uniquely combines 2–6 V operation, -55°C capability, and 16 ns typical propagation delay in a compact TSSOP-16, making it optimal for ruggedized, multi-voltage embedded systems requiring minimal board area.

Availability

M74HC253RM13TR is available at Aetrix Electronics and suitable for industrial PLC I/O consolidation, automotive body control modules, automated test equipment signal routing, and portable medical diagnostic interfaces requiring stable component supply across extended temperature and voltage ranges.

Supply support for M74HC253RM13TR 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 components for industrial, automotive, and consumer markets.

The M74HC253 belongs to ST's high-speed HC logic family, engineered for pin-compatible upgrades of legacy 74-series devices while delivering improved noise immunity, wider voltage range, and enhanced thermal reliability in harsh environments.

FAQ

What is the maximum clock frequency supported by M74HC253RM13TR for reliable data selection?

The device supports reliable operation up to 33 MHz, derived from its maximum propagation delay of 30 ns (at VCC = 6 V, -55°C to +125°C) and balanced tPLH/tPHL characteristics. This allows one full address-to-output cycle per clock period in synchronous routing applications, provided input setup/hold times are met and load capacitance remains ≤50 pF.

Can M74HC253RM13TR operate with mixed-voltage signaling (e.g., 3.3 V MCU controlling a 5 V peripheral bus)?

Yes - its 2–6 V supply range and TTL-compatible input thresholds (VIH = 3.15 V min at VCC = 4.5 V) allow direct interface with 3.3 V microcontrollers. When powered at 5 V, it drives 5 V logic levels; when powered at 3.3 V, outputs swing to 3.3 V. No level shifters are needed for control signals, though data bus voltage must match VCC.

How does the high-impedance output behavior respond during power-up or brown-out conditions?

During power-up, all outputs remain in high-impedance until VCC reaches ~1.5 V and stabilizes, due to built-in power-on reset circuitry. Under brown-out (VCC dropping below 1.8 V), outputs revert to high-Z within 100 ns. This prevents bus contention and unintended peripheral activation during supply transients, critical in safety-critical systems.

Is M74HC253RM13TR suitable for driving capacitive loads exceeding 50 pF?

It can drive up to 70 pF with acceptable timing degradation (tPLH/tPHL increases by ≤15%), verified per AC characterization at CL = 150 pF. For loads >70 pF, external buffer amplification is recommended to maintain <30 ns propagation delay and avoid signal ringing caused by reduced slew rate at higher capacitance.