Diodes Incorporated 74LV86AT14-13

Overview

74LV86AT14-13 from Diodes Incorporated is a quad 2-input XOR gate IC in TSSOP-14 package, operating from 2.0V to 5.5V supply, with 5.5V-tolerant inputs, IOFF-enabled partial power-down protection, and Schmitt-trigger inputs for noise immunity. It delivers 12mA output drive at 4.5V and supports voltage translation between 3.3V and 5V logic domains in mixed-supply systems.

For engineers reviewing the 74LV86AT14-13 datasheet, 74LV86AT14-13 pinout, 74LV86AT14-13 application, or 74LV86AT14-13 equivalent, key selection criteria include IOFF leakage (<5μA), propagation delay (as low as 3.7ns at 5V), input voltage tolerance (up to 5.5V), and Schmitt-trigger hysteresis for robust signal conditioning in noisy digital interfaces.

Technical Context

This device implements four independent Boolean XOR functions (Y = A ⊕ B) using CMOS technology, with fully buffered push-pull outputs and rail-to-rail input voltage acceptance. Its IOFF circuit disables outputs during power-down to prevent back-current flow, enabling safe hot-insertion and partial system shutdown.

The Schmitt-trigger inputs provide hysteresis (VIH(D) = 2.31V, VIL(D) = 0.99V at 3V), ensuring reliable switching in slow-rising or noisy signals. Propagation delay varies with supply voltage and load: 3.7–6.8ns (typ/max) at 5V/15pF, and 5.3–8.8ns at 5V/50pF, supporting timing-critical combinational logic paths.

Key Specifications

Pinout & Package

TSSOP-14 package: 4.9mm × 4.5mm body, 0.65mm pitch, 1.2mm height, lead-free and RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar XOR gate applications.

Compared with SN74LVC86APW and 74AUP2G86DC, the 74LV86AT14-13 uniquely combines IOFF protection, Schmitt-trigger inputs, and 5.5V input tolerance-making it the only choice for mixed-voltage, hot-pluggable, or EMI-prone industrial control logic where deterministic power-state isolation is mandatory.

Availability

74LV86AT14-13 is available at Aetrix Electronics and suitable for PCIe link training, USB-C configuration detection, industrial sensor interface, and ISA bus decoding requiring stable component supply across automotive-grade temperature ranges and long-lifecycle production programs.

Supply support for 74LV86AT14-13 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, industry-qualified components for automotive, industrial, and computing markets.

The 74LV logic family targets mixed-voltage digital systems requiring robust noise immunity, low-power operation, and seamless interoperability between legacy and modern logic families-especially in space-constrained, thermally demanding applications.

FAQ

What is the maximum clock frequency supported by the 74LV86AT14-13 in a feedback oscillator configuration?

The 74LV86AT14-13 is not designed for oscillator use. Its XOR function lacks inherent phase-shift or gain characteristics required for stable oscillation. When used in ring oscillators or other timing circuits, maximum frequency depends on propagation delay (3.7ns typ at 5V), fanout, and PCB parasitics-typically yielding <100MHz in practical implementations with CL=15pF.

Can unused inputs be left floating, or must they be terminated?

Unused inputs must never be left floating. Per Diodes' Recommended Operating Conditions, all unused inputs must be tied to either V_CC or GND to prevent increased ICC, erratic switching, or ESD susceptibility. Floating inputs may cause undefined output states and elevated power consumption due to internal node contention.

Does the IOFF feature protect against back-current when V_CC is shorted to ground?

Yes. The IOFF circuit activates when V_CC drops below ~0.8V, disabling output drivers regardless of whether power loss results from shutdown, brownout, or short-circuit. Measured IOFF leakage remains <5μA even with inputs held at 5.5V while V_CC = 0V, preventing damage to upstream drivers or shared bus lines.

How does the Schmitt-trigger input improve performance in RS-485 receiver output conditioning?

When conditioning RS-485 receiver outputs (which swing ±1.5V to ±5V), the Schmitt-trigger input rejects common-mode noise and slow edge rates typical of long cable runs. With VIH(D) = 2.31V and VIL(D) = 0.99V at 3V supply, it provides >1.3V hysteresis-ensuring clean logic transitions even with 1Vpp noise superimposed on the differential signal.