STMicroelectronics 74ACT00MTR

Overview

74ACT00MTR from STMicroelectronics is a quad 2-input NAND gate in TSSOP-14 package, designed for high-speed digital logic interfacing with TTL, NMOS, and CMOS systems. It delivers 4.5 ns typical propagation delay at 5 V, ±24 mA symmetrical output drive, and operates across 4.5–5.5 V supply range with 2 µA max quiescent current. Used in bus buffering, address decoding, and control signal conditioning in industrial controllers and communication interface modules.

For engineers reviewing the 74ACT00MTR datasheet, 74ACT00MTR pinout, 74ACT00MTR application, or 74ACT00MTR equivalent, key selection criteria include transmission-line driving capability (50 Ω), latch-up immunity, ESD tolerance (2 kV), and strict VIH/VIL thresholds compatible with legacy TTL logic families.

Technical Context

The 74ACT00MTR implements four independent NAND gates using sub-micron C2MOS technology with three-stage buffered outputs, enabling high noise immunity and stable switching under transient load conditions. Its symmetrical output impedance (|IOH| = IOL ≥ 24 mA) and balanced tPLH/tPHL delays ensure minimal skew in synchronous logic paths.

Designed for mixed-voltage system interfacing, it accepts TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V at VCC = 4.5–5.5 V) while driving CMOS loads with rail-to-rail output swing. Input protection diodes and 2 kV HBM ESD rating support robust operation in industrial environments without external clamping.

Key Specifications

Pinout & Package

TSSOP-14 (Thin Shrink Small Outline Package), 4.9–5.1 mm width, 0.65 mm pitch, 1.1 mm height - surface-mount compatible with standard reflow profiles and space-constrained PCB layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad 2-input NAND gate applications.

Compared with SN74ACT00DR and MC74ACT00DG, the 74ACT00MTR offers superior board-area efficiency and thermal performance in automated SMT production, while maintaining identical logic behavior and timing - making it optimal for space-constrained, high-volume industrial control modules.

Availability

74ACT00MTR is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, and legacy bus interface adapters requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74ACT00MTR 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, specializing in automotive, industrial, power, and analog/mixed-signal technologies with over 40 years of logic IC heritage.

The 74ACT series was developed to bridge TTL and CMOS logic domains with high-speed, low-power, and robust interface capability - targeting industrial automation, telecom infrastructure, and automotive subsystems demanding reliability beyond commercial grade.

FAQ

Is 74ACT00MTR pin-compatible with standard 74LS00?

Yes - it follows the same 14-pin DIP/SO/TSSOP pinout as 74LS00 and other 74-series 00 gates. All four NAND gates occupy identical positions: inputs on pins 1&2, 4&5, 9&10, 12&13; outputs on pins 3, 6, 8, 11; VCC on pin 14 and GND on pin 7. No PCB redesign is needed for drop-in replacement.

Can 74ACT00MTR operate reliably at 4.5 V supply?

Yes - its recommended operating range starts at 4.5 V, and all AC/DC specifications (including 4.5 ns tPD, 24 mA drive, and VIH/VIL thresholds) are guaranteed across 4.5–5.5 V. At 4.5 V, VOH remains ≥3.86 V and VOL ≤0.5 V under 24 mA load, meeting TTL interface requirements.

What is the maximum fan-out into 50 Ω transmission lines?

Each output can drive one 50 Ω line end-to-end without waveform degradation, as confirmed by incident-wave switching tests in the datasheet. For multi-drop configurations, parallel termination is required; the device does not support unterminated stubs longer than 2 cm at >50 MHz due to reflection-induced ringing.

Does 74ACT00MTR require external pull-up or pull-down resistors on unused inputs?

No - all inputs have internal protection diodes and defined DC thresholds. However, floating inputs must be avoided: tie unused A/B inputs to VCC or GND to prevent increased ICC and potential oscillation. The datasheet specifies IIK ≤ ±20 mA, confirming safe direct connection without external resistors.