onsemi MC74VHCT08ADTR2

Overview

MC74VHCT08ADTR2 from onsemi is a quad 2-input AND gate in TSSOP-14 package, fabricated with silicon gate CMOS technology. It delivers TTL-compatible inputs (VIH = 2.0 V, VIL = 0.8 V), 5.0 V CMOS-level output swings, 4.3 ns typical propagation delay at 5 V, and operates across 2.0–5.5 V supply range-used for level translation between 3.3 V and 5.0 V logic domains in industrial control interfaces.

For engineers reviewing the MC74VHCT08ADTR2 datasheet, pinout, applications, or equivalent options, key selection criteria include input voltage tolerance up to 7.0 V, power-down input protection, balanced propagation delays, and compatibility with standard logic families in space-constrained PCB layouts.

Technical Context

The MC74VHCT08ADTR2 implements four independent AND gates with buffered outputs for high noise immunity and stable switching. Its input structures tolerate voltages from 0 V to 5.5 V regardless of VCC, and output structures remain protected even when VCC = 0 V-enabling safe hot insertion and battery-backup scenarios.

Internally composed of three-stage logic including dedicated output buffering, it supports operation from −40 °C to +125 °C and exhibits latchup performance exceeding 300 mA. Input rise/fall time is specified up to 20 ns/V at VCC = 5.0 V ±0.5 V, ensuring reliable timing in mixed-voltage digital systems.

Key Specifications

Pinout & Package

TSSOP-14 (Case 948G) package with 1 mm maximum height, 0.65 mm lead pitch, and Pb-free finish - optimized for automated SMT assembly and thermal performance in dense layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74VHC08PW and 74LVC08PW, the MC74VHCT08ADTR2 uniquely combines 5 V operation, 7 V input tolerance, and power-down protection - making it the only option among the three qualified for mixed-voltage hot-swap and automotive body electronics where supply sequencing is uncontrolled.

Availability

MC74VHCT08ADTR2 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 MC74VHCT08ADTR2 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 electronics, delivering silicon solutions for automotive, industrial, cloud, medical, and IoT applications.

The MC74VHCT08ADTR2 belongs to the VHCT logic family designed specifically for TTL-to-CMOS level translation in mixed-voltage systems - emphasizing robustness, wide supply range, and industrial temperature operation.

FAQ

What is the maximum input voltage rating for MC74VHCT08ADTR2?

The MC74VHCT08ADTR2 supports DC input voltages from −0.5 V to +7.0 V, independent of VCC. This allows safe interfacing between 5 V systems and 3 V subsystems without external clamping diodes, and protects against transient overvoltage events such as load dump in automotive applications. The specification is verified per the Absolute Maximum Ratings table in the official onsemi datasheet Rev. 10.

Does MC74VHCT08ADTR2 support operation with VCC = 0 V?

Yes, the MC74VHCT08ADTR2 features power-down protection on both inputs and outputs. When VCC = 0 V, inputs remain high-impedance and non-damaging, and outputs are disabled without leakage or contention. This capability enables hot-insertion into live backplanes and battery-backed memory retention circuits - confirmed in the "Power Down Protection Provided on Inputs" feature section and DC Electrical Characteristics table.

What is the typical propagation delay of MC74VHCT08ADTR2 at 3.3 V supply?

At VCC = 3.0 V ±0.3 V and CL = 15 pF, the MC74VHCT08ADTR2 exhibits a typical propagation delay of 6.2 ns (tPLH/tPHL). This value is measured under standardized AC test conditions and appears in the AC Electrical Characteristics table of the onsemi datasheet. Performance degrades predictably at higher temperatures and capacitive loads, with worst-case 14.0 ns at 125 °C and CL = 50 pF.

Is MC74VHCT08ADTR2 pin-compatible with standard 74-series AND gates?

Yes, the MC74VHCT08ADTR2 is pin- and function-compatible with industry-standard 74LS08, 74HC08, and 74HCT08 devices in TSSOP-14 packaging. Pin assignments match the JEDEC MS-012 outline: inputs and outputs occupy identical positions, and VCC/GND locations align. This compatibility is explicitly stated in the "Pin and Function Compatible with Other Standard Logic Families" feature bullet and verified in Figure 2 (Pinout) of the datasheet.

What is the ESD robustness of MC74VHCT08ADTR2?

The MC74VHCT08ADTR2 achieves Human Body Model (HBM) ESD rating >2000 V and Machine Model (MM) >200 V, as tested per JESD22-A114 and JESD22-A115 standards. These values reflect built-in protection circuitry validated during device characterization and are documented in the Features section of the onsemi datasheet. No external ESD components are required for standard handling in industrial assembly environments.