STMicroelectronics 74LX1G00CTR

Overview

74LX1G00CTR from STMicroelectronics is a single 2-input NAND gate in SOT323-5L package, operating from 1.65V to 5.5V supply, with 4.7ns max propagation delay at 3V, ±24mA output drive, and 5V-tolerant inputs enabling 5V-to-3V logic interfacing in mixed-voltage systems.

For engineers reviewing the 74LX1G00CTR datasheet, 74LX1G00CTR pinout, 74LX1G00CTR application, or 74LX1G00CTR equivalent, key selection criteria include input voltage tolerance, output drive strength across VCC range, power-down protection behavior, symmetrical output impedance, and guaranteed truth table operation down to 1.2V data retention.

Technical Context

This device implements a CMOS NAND function using sub-micron C2MOS technology with three-stage buffered output for high noise immunity. Its input structure accepts 0–7V regardless of VCC, enabling robust level-shifting without external components.

The internal design includes power-down protection on all I/O pins and ESD protection circuits on inputs and outputs. Propagation delays are balanced (tPLH ≅ tPHL), and output impedance is symmetrical (|IOH| = IOL ≥ 24mA at VCC = 3V), supporting clean signal integrity in bidirectional or push-pull configurations.

Key Specifications

Pinout & Package

SOT323-5L: 5-pin ultra-small surface-mount package (1.80 × 2.40 mm footprint, 0.95 mm pitch), optimized for space-constrained PCB layouts in portable and IoT edge devices.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G00DBVR and NC7SZ00P5X, the 74LX1G00CTR uniquely balances 5V input tolerance, ultra-low ICC, and industrial temperature range - making it optimal for mixed-voltage embedded systems requiring long-term reliability and minimal power overhead.

Availability

74LX1G00CTR is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, portable medical devices, and smart energy metering applications requiring stable component supply and long-lifecycle support.

Supply support for 74LX1G00CTR 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, designing and manufacturing analog, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.

The 74LX series targets low-voltage, high-speed logic interfacing with emphasis on voltage translation, power efficiency, and ruggedness in mixed-supply systems.

FAQ

Can 74LX1G00CTR operate with VCC = 1.65V while driving a 15pF load at 10MHz?

Yes. At VCC = 1.65V, the device guarantees truth table operation and delivers ≥4mA output drive per IOL/IOH spec. With CPD = 16pF and fIN = 10MHz, average ICC remains below 1µA - well within its 1µA max quiescent rating at 25°C.

What happens to inputs and outputs when VCC = 0V?

Power-down protection activates: all inputs and outputs enter high-impedance state with diode clamping to GND and VCC rails. Inputs accept 0–5.5V safely, and outputs tolerate up to 7V without damage or back-current, preventing system-level fault propagation.

Is the SOT323-5L package RoHS-compliant and lead-free?

Yes. The 74LX1G00CTR in SOT323-5L packaging meets RoHS Directive 2011/65/EU and is manufactured with lead-free terminations and halogen-free molding compound, certified per STMicroelectronics' ECOPACK2 standards.

How does the 74LX1G00CTR compare to standard 74HC00 in terms of noise immunity?

It provides superior noise immunity due to its three-stage buffered output architecture and higher input hysteresis margin. Measured CIN = 4pF and CPD = 16pF at 1.8V yield lower dynamic coupling than 74HC00, and the 5V-tolerant input structure inherently rejects common-mode transients above VCC.