Diodes Incorporated 74AHCT86T14-13

Overview

74AHCT86T14-13 from Diodes Incorporated is a quad 2-input XOR gate IC in TSSOP-14 package, operating at 4.5V–5.5V supply, delivering 8mA output drive, 3.4ns typical propagation delay (CL=15pF), and TTL-compatible inputs for digital logic interfacing in embedded control and interface circuits.

For engineers reviewing the 74AHCT86T14-13 datasheet, 74AHCT86T14-13 pinout, 74AHCT86T14-13 application, or 74AHCT86T14-13 equivalent, key selection criteria include guaranteed 8mA sink/source capability at VCC = 4.5V, Schmitt-trigger input hysteresis for noise immunity, and -40°C to +125°C industrial temperature operation with RoHS-compliant green packaging.

Technical Context

This device implements four independent Boolean XOR functions (Y = A ⊕ B) using advanced CMOS technology, with all inputs featuring Schmitt-trigger action to reject slow-rising or noisy signals. It supports standard push-pull outputs without open-drain configuration and requires no external pull-ups.

Designed for 5V TTL-level system integration, it maintains compatibility with legacy TTL logic while delivering CMOS power efficiency-ICC ≤ 40μA at static conditions and ≤5mA under dynamic switching with one input driven to VCC – 2.1V.

Key Specifications

Pinout & Package

TSSOP-14 (Thin Shrink Small Outline Package), 4.9mm × 4.4mm body, 0.65mm pitch, 1.0mm max height - optimized for space-constrained PCB layouts and automated assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74AHCT86PW and 74LVC86GW, the 74AHCT86T14-13 uniquely balances 5V TTL compatibility, industrial temperature support, and Schmitt-trigger noise immunity-making it optimal for mixed-voltage legacy upgrades and harsh-environment control logic where signal integrity is critical.

Availability

74AHCT86T14-13 is available at Aetrix Electronics and suitable for PC peripheral interfaces, industrial sensor conditioning, embedded debug bus synchronization, and consumer audio control logic requiring stable component supply and long-term lifecycle assurance.

Supply support for 74AHCT86T14-13 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, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and Malaysia.

The 74AHCT logic family targets industrial and computing applications requiring 5V-compatible, low-power, high-noise-immunity digital building blocks-designed specifically for drop-in replacement of legacy 74LS and 74F logic in upgraded systems.

FAQ

Is the 74AHCT86T14-13 pin-compatible with the SO-14 version 74AHCT86S14-13?

Yes, both share identical pin numbering and logic functionality. The only difference is package: TSSOP-14 (74AHCT86T14-13) versus SO-14 (74AHCT86S14-13). PCB layout must match respective land patterns-TSSOP requires tighter pitch (0.65mm vs 1.27mm) and smaller pads per Diodes' AP02001 guidelines.

Can unused inputs be left floating?

No. Per datasheet Note 5, all unused inputs must be tied to either VCC or GND to prevent increased ICC, oscillation, or erratic output behavior. Floating inputs may cause excessive current draw due to partial conduction in internal CMOS stages, especially at temperature extremes.

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

Test data specifies CL = 15pF and CL = 50pF conditions, with tPD increasing from 3.4ns to 4.9ns (typ) at VCC = 4.5V. For stable operation, keep total load ≤50pF-including trace capacitance (~0.5pF/mm), input capacitance of driven devices (e.g., 4.0pF per gate), and probe effects.

Does this device support mixed-voltage operation between 3.3V and 5V systems?

No. The 74AHCT86T14-13 is strictly a 4.5V–5.5V device. Its inputs are TTL-compatible but not 3.3V-tolerant-applying 3.3V logic highs risks violating VIH minimum (2.0V guaranteed, but margin shrinks near VCC min). Use dedicated level translators like TXB0104 for 3.3V↔5V interfacing.