onsemi M74VHC1G135DFT2G-L22038

Overview

M74VHC1G135DFT2G-L22038 from onsemi is a single 2-input Schmitt-trigger NAND gate with open-drain output, designed for level-shifting and noise-immune signal conditioning in mixed-voltage systems. It operates from 2.0 V to 5.5 V, delivers 4.9 ns propagation delay at 5 V (typ), supports 8 mA sink current at 3.0 V, and features overvoltage-tolerant inputs/outputs up to 5.5 V-enabling reliable interfacing between 3 V and 5 V logic domains in industrial control I/O modules.

For engineers reviewing the M74VHC1G135DFT2G-L22038 datasheet, pinout, applications, or equivalent options, key selection criteria include its Schmitt-trigger hysteresis (0.3–0.5 V typ), IOFF partial power-down capability, SC-74A package footprint, and open-drain output compatibility with wired-AND bus architectures.

Technical Context

The M74VHC1G135DFT2G-L22038 implements a three-stage CMOS internal structure with buffered output, delivering high noise immunity and stable switching behavior. Its Schmitt-trigger input stage provides defined VT+ (2.2–3.85 V) and VT− (0.9–1.65 V) thresholds across supply voltages, enabling robust operation in electrically noisy environments such as motor drive feedback paths.

Open-drain output architecture allows flexible pull-up configuration and voltage-level translation without external level shifters. The device supports IOFF functionality during power-down (VCC = 0 V), preventing back-driving and current leakage when upstream logic is inactive-critical for hot-swap and battery-backed subsystems.

Key Specifications

Pinout & Package

SC-74A (SOT-353) surface-mount package: 3.00 mm × 1.50 mm × 0.95 mm body, 0.95 mm lead pitch, 5-terminal configuration with gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar logic gate applications.

Compared with SN74LVC1G135DBVR and 74AUP1G135GW,125, the M74VHC1G135DFT2G-L22038 uniquely combines IOFF protection, 5.5 V overvoltage tolerance, and Schmitt-trigger hysteresis optimized for industrial switch debouncing-making it preferred for ruggedized embedded I/O designs where supply sequencing and noise immunity are critical.

Availability

M74VHC1G135DFT2G-L22038 is available at Aetrix Electronics and suitable for industrial PLC modules, factory automation I/O expanders, and automotive body control units requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature extremes.

Supply support for M74VHC1G135DFT2G-L22038 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 is a global semiconductor supplier focused on energy-efficient electronics, delivering silicon-based solutions for automotive, industrial, cloud, medical, and IoT applications.

The MC74VHC1G135 product line delivers single-gate logic functions with enhanced noise immunity and mixed-voltage interoperability-designed specifically for signal conditioning and interface bridging in harsh industrial and transportation environments.

FAQ

What is the maximum operating temperature range for the M74VHC1G135DFT2G-L22038?

The M74VHC1G135DFT2G-L22038 is rated for operation from −55 °C to +125 °C per its recommended conditions. This extended range supports deployment in under-hood automotive modules, industrial motor drives, and outdoor telecom equipment where ambient temperatures exceed standard commercial limits. The device maintains full functionality-including Schmitt-trigger thresholds and propagation delay-across this entire range.

Does the M74VHC1G135DFT2G-L22038 support partial power-down protection?

Yes, the M74VHC1G135DFT2G-L22038 includes IOFF circuitry that actively disables input and output paths when VCC = 0 V. This prevents current backflow from live signal lines into unpowered sections of the system-a critical feature for hot-pluggable I/O cards and battery-backed subsystems. Measured IOFF leakage is ≤1.0 μA under these conditions.

Can the M74VHC1G135DFT2G-L22038 interface 5 V inputs while powered from a 3.3 V supply?

Yes, the M74VHC1G135DFT2G-L22038 has overvoltage-tolerant inputs rated to 5.5 V regardless of VCC level. When powered from 3.3 V, it safely accepts 5 V logic signals on pins A and B without damage or clamping diode conduction-enabling direct connection to legacy 5 V peripherals without external level-shifting components.

What is the typical propagation delay of the M74VHC1G135DFT2G-L22038 at 3.3 V operation?

At VCC = 3.3 V and CL = 15 pF, the M74VHC1G135DFT2G-L22038 exhibits a typical propagation delay (tPD) of 7.6 ns, with a maximum of 16.1 ns over the full −55 °C to +125 °C temperature range. This ensures deterministic timing in real-time control loops and high-speed digital interfaces where sub-20 ns gate delays are required.

Is the M74VHC1G135DFT2G-L22038 pin-compatible with other SC-74A logic gates?

The M74VHC1G135DFT2G-L22038 uses the standard SC-74A (SOT-353) 5-pin layout with pin 1 = B, pin 2 = A, pin 3 = GND, pin 4 = Y (open drain), pin 5 = VCC. While physical footprint matches other SC-74A logic devices, functional pinout differs-for example, SN74LVC1G00DBVR assigns pin 4 to VCC and pin 5 to GND. Always verify pin assignment per datasheet before board reuse.