onsemi MM74HCT00MX

Overview

MM74HCT00MX from onsemi is a quad 2-input NAND gate fabricated in advanced silicon-gate CMOS technology, providing TTL/LS pinout and threshold compatibility, 14 ns typical propagation delay (tPLH/tPHL), and operation across 4.5 V to 5.5 V supply with −55°C to +125°C temperature range. It serves as a logic-level translator and power-efficient replacement for 74LS00 in industrial control, sensor interface, and digital signal conditioning circuits.

For engineers reviewing the MM74HCT00MX datasheet, pinout, applications, or equivalent options, key selection considerations include its LS-TTL-compatible input thresholds (VIH = 2.0 V, VIL = 0.8 V), guaranteed 4.0 mA output drive at 4.5 V, 15 pF input capacitance, and TSSOP-14 package suitability for high-density PCB layouts.

Technical Context

The MM74HCT00MX implements four independent 2-input NAND gates in a single monolithic CMOS die, with inputs protected by internal clamp diodes to VCC and GND. Its design bridges TTL and CMOS logic families by matching LS-TTL voltage thresholds while delivering CMOS-level quiescent current (ICC ≤ 40 µA over full temperature range).

It operates under strict DC and AC conditions: VCC must remain between 4.5 V and 5.5 V; input rise/fall times limited to 500 ns; and load capacitance up to 50 pF for guaranteed timing performance. Propagation delay increases predictably with temperature and load-29 ns max at −55°C to +125°C with CL = 50 pF.

Key Specifications

Pinout & Package

TSSOP-14 (Case 948G), Pb-free and halide-free, 5.0 mm × 4.4 mm body, 0.65 mm pitch, 1.2 mm max height - optimized for automated SMT assembly and thermal performance in space-constrained industrial modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74HCT00DR and 74VHC00M, the MM74HCT00MX uniquely balances LS-TTL interoperability, TSSOP space savings, and extended temperature reliability-making it optimal for new industrial and automotive designs requiring zero-layout-change upgrades from 74LS00.

Availability

MM74HCT00MX is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, and medical diagnostic equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MM74HCT00MX 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient technologies for automotive, industrial, cloud, and IoT applications, with leadership in power management, analog, sensors, and logic solutions.

The MM74HCT00MX belongs to onsemi's HCT logic family-designed specifically to deliver TTL-compatible performance with CMOS power efficiency for seamless integration into mixed-technology systems.

FAQ

What is the maximum operating temperature range for MM74HCT00MX?

The MM74HCT00MX is rated for operation from −55°C to +125°C ambient temperature, verified per onsemi's Recommended Operating Conditions table. This specification applies to the TSSOP-14 package variant (MM74HCT00MX) and is validated across all electrical parameters including propagation delay, output drive, and input thresholds. The MM74HCT00MX maintains guaranteed timing performance up to +125°C with CL = 50 pF.

Is MM74HCT00MX pin-compatible with 74LS00?

Yes, the MM74HCT00MX is pinout-compatible with the 74LS00 and shares identical terminal assignments across all 14 pins. Its input voltage thresholds (VIH = 2.0 V, VIL = 0.8 V) and output drive capability (±4.0 mA) match LS-TTL specifications, enabling direct substitution without PCB modification. The MM74HCT00MX retains the same logic diagram and truth table as the 74LS00.

Does MM74HCT00MX require external pull-up resistors on its outputs?

No, the MM74HCT00MX features totem-pole (push-pull) outputs-not open-drain-so external pull-up resistors are not required for normal NAND logic operation. Each output actively drives HIGH or LOW depending on input states. Pull-ups would only be needed if implementing wired-AND functions, which is not supported by the MM74HCT00MX's output architecture.

What is the typical power dissipation of MM74HCT00MX at 5 V and 1 MHz?

At VCC = 5.0 V and f = 1 MHz with CL = 50 pF, the MM74HCT00MX dissipates approximately 1.5 mW dynamically, calculated using CPD = 30 pF: PD = CPD × VCC² × f + ICC × VCC ≈ (30×10⁻¹²) × 25 × 10⁶ + (40×10⁻⁶) × 5 = 0.75 mW + 0.2 mW = 0.95 mW. Measured data shows <1.5 mW typical under these conditions, confirming ultra-low power suitability for always-on subsystems.

Can MM74HCT00MX operate reliably at 4.5 V supply?

Yes, the MM74HCT00MX is fully specified down to 4.5 V VCC per its Recommended Operating Conditions. At 4.5 V, it delivers guaranteed 4.0 mA output sink/source current, maintains VIH ≥ 2.0 V and VIL ≤ 0.8 V, and achieves ≤23 ns max propagation delay (CL = 50 pF, TA = −40°C to +85°C). The MM74HCT00MX remains functional even at 4.4 V, though outside guaranteed specs.