STMicroelectronics M74HCT04RM13TR

Overview

M74HCT04RM13TR from STMicroelectronics is a high-speed CMOS hex inverter in TSSOP-14 package, delivering 11 ns typical propagation delay at 4.5 V, ±4 mA symmetrical output drive, and TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V). It interfaces HCMOS logic with legacy TTL/NMOS systems in industrial control timing, sensor signal inversion, and digital bus buffering.

For engineers reviewing the M74HCT04RM13TR datasheet, M74HCT04RM13TR pinout, M74HCT04RM13TR application, or M74HCT04RM13TR equivalent, key selection criteria include guaranteed 4.5–5.5 V operation, -55°C to +125°C extended temperature range, 1 µA max ICC quiescent current, and IEC-compliant logic symbol compliance for schematic validation.

Technical Context

The M74HCT04RM13TR implements six independent CMOS inverter gates using silicon gate C2MOS technology with three-stage buffered outputs, enabling high noise immunity and stable rail-to-rail switching. Its input protection circuits guard against ESD and transient overvoltage, supporting robust operation in noisy industrial environments.

It operates strictly within 4.5–5.5 V supply range and guarantees TTL-compatible input voltage thresholds while maintaining CMOS-level power efficiency. Propagation delays are balanced (tPLH ≅ tPHL), and output impedance is symmetrical (|IOH| = IOL ≥ 4 mA), ensuring consistent rise/fall times and predictable loading behavior across all six channels.

Key Specifications

Pinout & Package

TSSOP-14 (Thin Shrink Small Outline Package), 4.9 × 6.4 mm body, 0.65 mm pitch, lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex inverter applications.

Compared with SN74HCT04DR and 74VHC04MTCX, the M74HCT04RM13TR uniquely combines extended –55°C to +125°C operation, integrated input ESD protection, and TSSOP-14 space efficiency-making it optimal for automotive and ruggedized industrial deployments where reliability trumps voltage flexibility or ultra-low quiescent current.

Availability

M74HCT04RM13TR is available at Aetrix Electronics and suitable for industrial PLC I/O conditioning, automotive body control modules, and test equipment digital logic interface requiring stable component supply across extended temperature and long-lifecycle programs.

Supply support for M74HCT04RM13TR 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 M74HCT04 belongs to ST's high-speed HCT logic family, engineered specifically for seamless TTL-to-CMOS bridging in mission-critical industrial and automotive control systems.

FAQ

Is M74HCT04RM13TR compatible with 3.3 V logic inputs?

No. The M74HCT04RM13TR requires a 4.5–5.5 V supply and has TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V), but its inputs are not 3.3 V tolerant. Applying 3.3 V signals directly may result in marginal or undefined logic states due to insufficient VIH margin. Level-shifting circuitry is required for interfacing with 3.3 V systems.

What is the maximum capacitive load this device can drive reliably?

The M74HCT04RM13TR is characterized up to 50 pF load capacitance per output, with propagation delay and transition time specifications guaranteed under that condition. Driving >50 pF increases tPLH/tPHL and slows edge rates; for loads exceeding 75 pF, consider adding a series resistor or using a dedicated buffer to maintain timing integrity and reduce ringing.

Does this part support hot insertion or live insertion into powered backplanes?

No. The M74HCT04RM13TR lacks hot-swap or Ioff protection features. Powering VCC before applying input signals-or vice versa-may cause latch-up or excessive current flow through input protection diodes. Always ensure proper power sequencing: apply VCC and GND first, then valid input signals, especially in modular or field-replaceable systems.

How does the input protection circuit operate during ESD events?

The M74HCT04RM13TR integrates clamp diodes from each input to VCC and GND, plus resistive current-limiting elements. During an ESD event (e.g., 2 kV HBM), these clamps divert transient current away from sensitive gate oxide, limiting voltage excursion to ~0.7 V above VCC or below GND. This design meets IEC 61000-4-2 Level 2 requirements without external components.