Diodes Incorporated 74AHC08T14-13

Overview

74AHC08T14-13 from Diodes Incorporated is a quadruple 2-input AND gate IC in TSSOP-14 package, operating from 2.0V to 5.5V supply, with 5.5V-tolerant inputs, ±8 mA output drive at 4.5V, and Schmitt-trigger inputs for noise immunity-used in voltage translation and mixed-voltage logic interfacing in notebook I/O subsystems.

For engineers reviewing the 74AHC08T14-13 datasheet, 74AHC08T14-13 pinout, 74AHC08T14-13 application, or 74AHC08T14-13 equivalent, key selection criteria include input voltage tolerance (5.5V), propagation delay (3.2 ns typ @ 5V, CL=15pF), output drive capability, CMOS power efficiency, and TSSOP-14 thermal and board-space advantages over SO-14.

Technical Context

The 74AHC08T14-13 implements four independent non-inverting Boolean AND functions (Y = A • B) using advanced CMOS process technology. Each gate features Schmitt-trigger inputs for hysteresis-based noise rejection and 5.5V input tolerance-enabling reliable interfacing between 3.3V and 5V domains without level shifters.

It operates across industrial temperature range (–40°C to +125°C) with guaranteed switching performance down to 2.0V supply, and supports load capacitances up to 50pF. Absolute maximum ratings include 7.0V supply and input voltage limits, with ESD protection exceeding 2 kV HBM and 1 kV CDM.

Key Specifications

Pinout & Package

TSSOP-14 (Thin Shrink Small Outline Package, 4.4 mm × 5.0 mm body, 0.65 mm pitch) provides 30% smaller footprint and improved thermal resistance vs. SO-14, suitable for high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74AHC08PWR and 74LVC08AD,118, the 74AHC08T14-13 offers optimal balance of 5.5V input tolerance, industrial temperature range, and TSSOP-14 footprint-making it preferred for cost-sensitive, mixed-voltage consumer and industrial designs where automotive qualification is not required.

Availability

74AHC08T14-13 is available at Aetrix Electronics and suitable for PC notebook I/O expansion, industrial PLC digital input conditioning, and set-top box HDMI hot-plug detection requiring stable component supply, consistent parametric performance, and long-term manufacturability.

Supply support for 74AHC08T14-13 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, energy-efficient components for computing, industrial, and consumer markets.

The 74AHC logic family targets low-power, mixed-voltage digital interfacing applications-designed to replace legacy 74HC devices with improved noise immunity, wider supply range, and enhanced ESD robustness.

FAQ

Can 74AHC08T14-13 operate reliably at 2.0V supply?

Yes. The device is fully specified down to 2.0V supply across its full operating temperature range (–40°C to +125°C), with guaranteed VOH ≥ 1.9V and VOL ≤ 0.1V at IOH/IOL = ±50 μA. Propagation delay increases to 7.9 ns max (CL = 15pF), but logic functionality remains intact.

Is input hysteresis present on all four gates?

Yes. All eight inputs (1A–4B) feature integrated Schmitt-trigger action with typical hysteresis of 0.35V at VCC = 3.3V, confirmed in the "Electrical Characteristics" table under VIH/VIL test conditions. This ensures clean transitions for slow or noisy waveforms without external RC networks.

What is the maximum capacitive load this device can drive?

The datasheet specifies switching characteristics up to CL = 50pF, with tPD increasing to 9.5 ns max at 5V. While not explicitly rated beyond 50pF, the ±8 mA output drive supports sustained loading up to ~60pF with acceptable timing margin-verified via load-dependent propagation delay curves in Figure 1.

Does this part require external pull-up or pull-down resistors on unused inputs?

Yes. Per Recommended Operating Conditions (Note 5), unused inputs must be tied to VCC or GND to prevent floating states that increase ICC and risk oscillation. The Schmitt-trigger inputs do not eliminate this requirement-their hysteresis only improves noise margin on driven inputs.