onsemi MC74VHC1GT04DF2G

Overview

MC74VHC1GT04DF2G from onsemi is a single-gate CMOS inverting buffer with TTL-compatible inputs and full 5.0 V CMOS output swing, designed for logic-level translation between 1.8 V/3.0 V and 5.0 V domains. It delivers 3.8 ns typical propagation delay at 5.0 V, supports −55°C to +125°C operation, and features input overvoltage tolerance up to 7.0 V - enabling safe interfacing of 5 V circuits to 3 V systems in industrial control and mixed-voltage microcontroller I/O expansion.

For engineers reviewing the MC74VHC1GT04DF2G datasheet, pinout, applications, or equivalent options, key selection criteria include its LSTTL-compatible input thresholds (VIL = 0.8 V, VIH = 2.0 V), rail-to-rail CMOS output drive (VOH > 0.8 VCC, VOL < 0.1 VCC), power-down protection, and SC-88A (SOT-353) 5-pin package compatibility with space-constrained PCB layouts.

Technical Context

The MC74VHC1GT04DF2G implements a three-stage CMOS inverter architecture with buffered output for high noise immunity and balanced tPLH/tPHL delays. Its input structure includes diode-clamped protection allowing 7.0 V absolute maximum input voltage independent of VCC, while output stages remain protected even when VCC = 0 V - critical for hot-swap and battery-backup scenarios.

It operates across 3.0 V to 5.5 V supply range, meets ESD ratings >1500 V (HBM), and complies with latch-up immunity ±500 mA per JEDEC JESD78. The device is Pb-free, qualified per AEC-Q100 stress testing, and optimized for low dynamic power via CPD = 10 pF.

Key Specifications

Pinout & Package

MC74VHC1GT04DF2G uses the SC-88A (SOT-353) 5-pin surface-mount package: 1.9 mm × 1.3 mm body, 0.65 mm lead pitch, gull-wing leads. Pin 1 = GND, Pin 2 = NC (no internal connection), Pin 3 = IN A, Pin 4 = VCC, Pin 5 = OUT Y.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar inverting buffer applications.

Compared with SN74LVC1G04DBVR and 74AUP1G04GW,125, the MC74VHC1GT04DF2G uniquely supports 5.0 V operation with 7.0 V input tolerance and industrial temperature range - making it the only option among the three qualified for mixed-voltage automotive and industrial control interfaces.

Availability

MC74VHC1GT04DF2G is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and medical device manufacturing requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MC74VHC1GT04DF2G 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The MC74VHC1GT04DF2G belongs to the VHC (Very High Speed CMOS) logic family, engineered for high-speed, low-power translation between disparate logic families and voltage domains in harsh-environment electronics.

FAQ

What is the absolute maximum input voltage rating for MC74VHC1GT04DF2G?

The MC74VHC1GT04DF2G supports an absolute maximum input voltage of −0.5 V to +7.0 V, independent of VCC. This specification is confirmed in the Maximum Ratings table of the official datasheet and enables safe interfacing with 5 V signals while operating from a 3.3 V or 2.5 V supply. The input protection circuitry prevents damage during supply sequencing or transient overvoltage events.

Does MC74VHC1GT04DF2G support operation at 3.3 V supply voltage?

Yes, MC74VHC1GT04DF2G is fully specified for operation at 3.3 V (within the recommended 3.0 V to 5.5 V VCC range). At VCC = 3.3 V, it maintains TTL-compatible inputs (VIL = 0.53 V, VIH = 1.4 V), delivers VOH > 2.64 V and VOL < 0.33 V at 4 mA load, and achieves tPD ≤ 11.0 ns (max) with CL = 50 pF - meeting requirements for 3.3 V system integration.

What is the function of Pin 2 (NC) on MC74VHC1GT04DF2G?

Pin 2 on MC74VHC1GT04DF2G is designated NC (No Connection) and has no internal electrical connection. It must remain unconnected on the PCB - neither tied to GND, VCC, nor routed. The SC-88A package uses this pin position for mechanical symmetry and thermal balance but does not bond it to any die structure, as verified in the pin assignment diagram and package drawings.

Is MC74VHC1GT04DF2G compatible with lead-free reflow soldering processes?

Yes, MC74VHC1GT04DF2G is Pb-free and qualified for standard lead-free reflow profiles per JEDEC J-STD-020. Its SC-88A package withstands peak temperatures up to 260°C for 10 seconds, and the device complies with IPC/JEDEC J-STD-002B solderability requirements. The "G" suffix in the part number explicitly denotes Pb-free construction.

How does MC74VHC1GT04DF2G handle power-down conditions?

MC74VHC1GT04DF2G incorporates power-down protection on both inputs and outputs: inputs tolerate voltages up to 7.0 V even when VCC = 0 V, and outputs remain high-impedance with no back-current flow during VCC ramp-down. This prevents bus contention and latch-up in systems with partial power cycling - a feature validated in the datasheet's DC Electrical Characteristics and Maximum Ratings sections.