STMicroelectronics M74HC4514RM13TR

Overview

M74HC4514RM13TR from STMicroelectronics is a high-speed CMOS 4-to-16 line decoder/latch with latched inputs, operating from 2V to 6V supply, delivering 20 ns typical propagation delay at 6V, ±4 mA output drive, and 4 µA max quiescent current at 25°C - used in address decoding for memory-mapped I/O and peripheral selection in industrial microcontroller systems.

For engineers reviewing the M74HC4514RM13TR datasheet, M74HC4514RM13TR pinout, M74HC4514RM13TR application, or M74HC4514RM13TR equivalent, key selection criteria include latch-enabled address decoding, TSSOP-24 package compatibility, active-HIGH 16-channel output logic, and wide-voltage operation across extended temperature ranges (–55°C to +125°C).

Technical Context

The M74HC4514 implements a binary-decoded 4-bit input (A–D) to select one of sixteen active-HIGH outputs (S0–S15), with data latching controlled by STROBE and global enable via INHIBIT. All inputs feature silicon-gate C2MOS protection against ESD and transient overvoltage.

Propagation delays are balanced (tPLH ≅ tPHL), with symmetrical output impedance (|IOH| = IOL ≥ 4 mA), high noise immunity (VNIH/VNIL ≥ 28% VCC), and guaranteed operation across –55°C to +125°C using a 2V–6V supply - supporting robust decoding in mixed-signal embedded control environments.

Key Specifications

Pinout & Package

TSSOP-24 package (7.7 mm × 6.5 mm × 1.1 mm height), 0.65 mm pitch, lead-free, RoHS-compliant surface-mount outline per mechanical drawing 7047476A.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 4-to-16 latch-decoder applications.

Compared with SN74HC4514N and CD74HC4514E, M74HC4514RM13TR offers superior thermal performance in dense layouts (TSSOP's lower θJA), direct compatibility with modern SMT lines, and tighter production lot traceability under STMicroelectronics' industrial-grade qualification program.

Availability

M74HC4514RM13TR is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, test equipment signal routing, and medical diagnostic sensor interfaces requiring stable component supply across extended temperature and long-lifecycle programs.

Supply support for M74HC4514RM13TR 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 microcontrollers, power management ICs, sensors, and analog chips for industrial, automotive, and consumer markets.

The M74HC4514 belongs to ST's high-reliability HC logic family, engineered for robust operation in harsh environments - emphasizing latch stability, wide voltage tolerance, and extended temperature resilience for mission-critical embedded control.

FAQ

What is the maximum clock frequency supported by the STROBE input?

The M74HC4514 does not operate on a clock signal; STROBE is an asynchronous latching control. Its minimum pulse width is 6 ns at VCC = 6 V, enabling reliable capture of address changes up to ~83 MHz in burst-mode applications - limited only by propagation delay and setup/hold timing margins.

Can INHIBIT be used for dynamic output blanking during data updates?

Yes - asserting INHIBIT HIGH blanks all S0–S15 outputs immediately (within tPHL(INHIBIT→Sn)), allowing safe reprogramming of A–D inputs and STROBE retriggering without output glitches. This enables atomic address updates in real-time systems.

Is the M74HC4514RM13TR compatible with 3.3 V-only systems?

Yes - it operates down to 2 V and meets VIH = 2.31 V (70% of 3.3 V) and VIL = 0.99 V (30% of 3.3 V) at VCC = 3.3 V, fully compliant with standard 3.3 V CMOS logic thresholds and interoperable with ARM Cortex-M and other 3.3 V microcontrollers.

Does this device support hot insertion or live bus connection?

No - the M74HC4514RM13TR lacks hot-swap protection circuitry. Inputs are ESD-hardened but not designed for live insertion into powered backplanes. Power sequencing (VCC before inputs) and static-safe handling are mandatory per Absolute Maximum Ratings.