STMicroelectronics M74HC365RM13TR

Overview

M74HC365RM13TR from STMicroelectronics is a high-speed CMOS hex non-inverting bus buffer with 3-state outputs, designed for bidirectional data bus isolation and load driving in digital systems. It operates from 2 V to 6 V, delivers 6 mA output drive (min), exhibits 10 ns typical propagation delay at 6 V, and supports industrial temperature range (–55 °C to +125 °C) in SO16 package.

For engineers reviewing the M74HC365RM13TR datasheet, M74HC365RM13TR pinout, M74HC365RM13TR application, or M74HC365RM13TR equivalent, key selection criteria include dual enable control logic (G1/G2), symmetrical output impedance, high noise immunity (28 % VCC), and compatibility with legacy 74-series bus interface designs.

Technical Context

The device implements six independent non-inverting buffers, each with output enabled only when both G1 and G2 are low; all outputs enter high-impedance state otherwise. Input protection includes ESD robustness (HBM: 2 kV, MM: 200 V, CDM: 1 kV) and transient voltage clamping.

Propagation delays are balanced (tPLH ≅ tPHL), output transition times are symmetric (tTLH ≅ tTHL), and DC specifications guarantee VIH ≥ 3.15 V and VIL ≤ 1.35 V at VCC = 4.5 V - enabling reliable interfacing with TTL and other HC-family logic.

Key Specifications

Pinout & Package

Package: SO16 (Small Outline, 16-pin, 3.9 mm body width, 1.27 mm pitch). RoHS-compliant, ECOPACK®-qualified.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex non-inverting 3-state buffer applications.

Compared with SN74HC365N and MC74HC365ADTR2G, M74HC365RM13TR offers superior thermal performance in SO16, guaranteed extended temperature operation, and ST-specific ESD robustness - making it optimal for industrial control and automotive-adjacent embedded systems where reliability trumps footprint.

Availability

M74HC365RM13TR is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for M74HC365RM13TR 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, delivering silicon solutions for smart driving, power management, sensing, connectivity, and microcontrollers.

M74HC365RM13TR belongs to ST's high-reliability HC logic family, engineered for robust digital interfacing in harsh industrial and automotive-adjacent environments where extended temperature operation and ESD resilience are mandatory.

FAQ

What is the function of the dual enable inputs G1 and G2?

G1 and G2 are active-low enable inputs that must both be low to assert all six outputs. If either is high, all outputs go high-impedance. This dual-input architecture prevents accidental bus activation due to single-point noise or glitch, improving system-level fault tolerance in noisy environments.

Can M74HC365RM13TR interface directly with 3.3 V logic while powered at 5 V?

Yes - its input thresholds scale with VCC (VIH ≥ 3.15 V at 4.5 V), so a 3.3 V logic high meets VIH spec when VCC = 5 V. However, output VOH will be ~4.9 V, requiring level translation if driving 3.3 V-only inputs. For bidirectional 3.3 V systems, use VCC = 3.3 V (within 2–6 V range) and verify VOL/VOH margins.

Is this device suitable for driving capacitive loads above 50 pF?

AC specs (tPLH, tPHL, tTLH) are characterized at CL = 50 pF. Driving larger loads increases propagation delay and transition time linearly - e.g., at CL = 150 pF, tPLH rises from 15 ns to 28 ns (6 V, 25 °C). For >100 pF, add series termination or verify timing slack in worst-case temperature corners.

Does M74HC365RM13TR have latch-up immunity per JEDEC JESD78?

Yes - fabricated using silicon gate C2MOS technology, it meets JEDEC JESD78 Class II latch-up immunity (≥100 mA). This is confirmed by ST's qualification reports for the M74HCxx series, ensuring robust operation in systems with mixed supply sequencing or transient ground bounce.