Diodes Incorporated 74AHC08S14-13

Overview

74AHC08S14-13 from Diodes Incorporated is a quad 2-input AND gate IC in SO-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 general-purpose logic interfacing in PC peripherals and consumer electronics.

For engineers reviewing the 74AHC08S14-13 datasheet, 74AHC08S14-13 pinout, 74AHC08S14-13 application, or 74AHC08S14-13 equivalent, key selection criteria include input voltage tolerance (5.5V), propagation delay (3.2 ns typ @ 5V, CL=15pF), output drive capability (±8 mA), CMOS power efficiency (<40 µA ICC max), and SO-14 package compatibility with legacy board layouts.

Technical Context

The 74AHC08S14-13 implements four independent Boolean AND functions (Y = A • B) using advanced CMOS process technology. Each gate features Schmitt-trigger inputs for hysteresis-based noise rejection and operates across a wide VCC range (2.0–5.5 V), enabling interoperability between 3.3 V and 5 V logic domains.

Input tolerance up to 5.5 V allows direct connection to higher-voltage signals without level-shifting circuitry. Output stages provide symmetrical ±8 mA drive at VCC = 4.5 V, supporting fan-out into standard TTL and CMOS loads while maintaining rail-to-rail logic swing and low static current (≤40 µA).

Key Specifications

Pinout & Package

74AHC08S14-13 is housed in a 14-pin Small Outline (SO-14) package with 1.27 mm pitch, 8.53–8.74 mm body length, and 3.80–3.99 mm body width. The package is lead-free, RoHS-compliant, and halogen-free per Diodes Incorporated's "Green" definition.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74AHC08DR and 74LVC08AD,118, the 74AHC08S14-13 uniquely combines 2.0 V minimum operation, Schmitt-trigger inputs, and 2 kV HBM ESD in a single SO-14 package-making it optimal for cost-sensitive, noise-prone, mixed-voltage industrial and consumer designs requiring guaranteed low-VCC functionality.

Availability

74AHC08S14-13 is available at Aetrix Electronics and suitable for PC peripheral interface, consumer audio/video control, and industrial I/O expansion requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for 74AHC08S14-13 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 industrial, computing, and consumer markets.

The 74AHC logic family targets low-power, wide-supply-voltage general-purpose digital interfacing-designed specifically for voltage translation, bus buffering, and noise-immune control signal conditioning in mixed-voltage embedded systems.

FAQ

What is the maximum recommended input rise/fall time for reliable operation?

The 74AHC08S14-13 specifies a maximum input transition rate of 100 ns/V at VCC = 3.0–3.6 V and 20 ns/V at VCC = 4.5–5.5 V. Exceeding these rates may cause metastability or increased propagation delay variation. For 5 V operation, keep edge rates slower than 20 ns/V - i.e., ≥100 ns for a full 5 V swing - to ensure deterministic switching and avoid false triggering.

Can unused inputs be left floating?

No. Unused inputs must be tied to either VCC or GND to prevent undefined logic states, excessive ICC, and potential oscillation. The datasheet explicitly states this in Recommended Operating Conditions (Note 5). Floating inputs increase power consumption and risk latch-up due to internal parasitic structures; connecting them to a valid rail ensures stable gate behavior and thermal safety.

Does the SO-14 package support automated optical inspection (AOI) after reflow?

Yes. The SO-14 package has gull-wing leads with defined coplanarity (≤0.10 mm), 1.27 mm pitch, and solderable terminations meeting IPC-7351B Class B standards. Its marking layout and pad geometry (per AP02001) are AOI-compatible when using standard 10 µm resolution systems and proper lighting angles - confirmed by Diodes' assembly guidelines and industry reflow profile validation reports.

Is the 74AHC08S14-13 qualified for automotive applications?

No. While rated for −40 °C to +125 °C, the 74AHC08S14-13 is not AEC-Q100 qualified and lacks automotive-specific screening (e.g., HTOL, ESD retest, board-level reliability). Diodes offers the AHC-series automotive-grade variants (e.g., 74AHC08QSE-13) with full AEC-Q100 Grade 2 certification - use those for ADAS, infotainment, or body control modules requiring automotive qualification.