STMicroelectronics 74VHCT00AMTR

Overview

74VHCT00AMTR from STMicroelectronics is a high-speed CMOS quad 2-input NAND gate with TTL-compatible inputs, 5 ns typical propagation delay at 5 V, ±8 mA symmetrical output drive, and operation across 4.5–5.5 V supply. It enables logic-level translation between 5 V and 3 V systems in industrial control and embedded interface circuits.

For engineers reviewing the 74VHCT00AMTR datasheet, 74VHCT00AMTR pinout, 74VHCT00AMTR application, or 74VHCT00AMTR equivalent, key selection criteria include input threshold compatibility (VIH ≥ 2 V, VIL ≤ 0.8 V), power-down protection on all I/Os, ESD immunity (2 kV), and guaranteed 8 mA output sink/source capability under worst-case temperature and voltage conditions.

Technical Context

The device implements four independent NAND gates using sub-micron C2MOS technology with buffered outputs for enhanced noise immunity. Each gate features TTL-compatible input thresholds and rail-to-rail input tolerance (0–7 V regardless of VCC).

Power-down protection ensures safe operation during supply sequencing or brownout, while symmetrical output impedance (|IOH| = |IOL| ≥ 8 mA) guarantees matched rise/fall times and balanced propagation delays (tPLH ≅ tPHL).

Key Specifications

Pinout & Package

74VHCT00AMTR is housed in a 14-pin SOIC (Small Outline Integrated Circuit) package with tape-and-reel delivery (MTR suffix). Dimensions conform to JEDEC MS-012, body width 3.9 mm, lead pitch 1.27 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74VHCT00APW and 74LCX00MTCX, the 74VHCT00AMTR uniquely combines 5 V operation, full TTL compatibility, and universal input voltage tolerance - making it the only choice for legacy 5 V system upgrades requiring zero hardware modification.

Availability

74VHCT00AMTR 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 74VHCT00AMTR 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, designing and manufacturing analog, digital, and mixed-signal ICs for industrial, automotive, and consumer markets.

The VHCT logic family targets high-speed, low-power 5 V CMOS applications with TTL interoperability - specifically engineered for seamless replacement of legacy 74LS devices without redesign.

FAQ

Can 74VHCT00AMTR operate with a 3.3 V supply?

No. The device is specified only for 4.5–5.5 V operation. At 3.3 V, VIH and VIL thresholds are not guaranteed, and output drive falls below 8 mA. For 3.3 V systems, consider the 74LVC00A instead, which has compatible logic function but different voltage ratings.

Does 74VHCT00AMTR require external pull-up or pull-down resistors on unused inputs?

No. Unused inputs may be tied directly to VCC or GND. The device's TTL-compatible inputs have no internal pull-ups; however, floating inputs must be avoided to prevent increased ICC and potential oscillation due to noise coupling into the high-gain input stage.

What is the maximum capacitive load this device can drive reliably?

The AC specifications are characterized up to 50 pF. Driving >50 pF increases propagation delay nonlinearly and may cause VOLP to exceed 0.8 V. For loads above 50 pF, add a series resistor (22–47 Ω) near the output to damp ringing and maintain signal integrity.

Is 74VHCT00AMTR pin-compatible with standard 7400-series TTL devices?

Yes - it is functionally and physically pin-compatible with the 7400, 74LS00, and 74F00 in SO-14 packages. All four NAND gates occupy identical pin positions (1A/1B/1Y, etc.), and the VCC/GND locations match, enabling direct replacement without PCB changes.