Diodes Incorporated 74LV86AS14-13

Overview

74LV86AS14-13 from Diodes Incorporated is a quad 2-input XOR gate IC in SO-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 PC and peripheral interfaces.

For engineers reviewing the 74LV86AS14-13 datasheet, 74LV86AS14-13 pinout, 74LV86AS14-13 application, or 74LV86AS14-13 equivalent, key selection criteria include mixed-voltage interface compatibility, IOFF leakage <5μA during power-down, propagation delay ≤9ns at 5V/CL=15pF, and RoHS-compliant green packaging for industrial and consumer electronics design-in.

Technical Context

The 74LV86AS14-13 implements four independent Boolean XOR functions (Y = A ⊕ B) using CMOS technology with push-pull outputs. Its IOFF circuit disables outputs when VCC = 0V, preventing back-current flow in partial-power-down systems such as hot-swap peripherals or multi-rail embedded controllers.

All inputs feature Schmitt-trigger action with hysteresis ≥0.3V at 3.3V, enabling robust operation in noisy environments. Input voltage tolerance up to 5.5V-exceeding VCC-allows direct interfacing with higher-voltage signals without level shifters, supporting bidirectional voltage translation across 2.0–5.5V supply domains.

Key Specifications

Pinout & Package

74LV86AS14-13 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. Pin 1 is marked by a notch or bevel; pin 7 is GND and pin 14 is VCC.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC86APW and 74AHC86D, the 74LV86AS14-13 uniquely combines 5.5V input tolerance, IOFF protection, and Schmitt-trigger inputs-making it the only choice for robust, mixed-voltage, partial-power-down logic interfacing in PCs and peripherals.

Availability

74LV86AS14-13 is available at Aetrix Electronics and suitable for PC motherboard bus isolation, USB hub signal conditioning, and hard disk drive interface logic requiring stable component supply and long-term industrial availability.

Supply support for 74LV86AS14-13 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 solutions for computing, industrial, and consumer markets.

The 74LV86AS14-13 belongs to Diodes' LV logic family, engineered for low-voltage interoperability, mixed-signal interface integrity, and robust operation in thermally constrained and electrically noisy environments.

FAQ

Can 74LV86AS14-13 operate reliably at 2.0V supply?

Yes. The device is fully characterized down to 2.0V: propagation delay is 21ns max at 2.5V/CL=15pF, input thresholds scale with VCC (VIH = 0.7×VCC), and output drive remains functional at ±2mA. This enables use in battery-powered or ultra-low-power subsystems where rail voltage may dip near minimum specification.

What is the purpose of the IOFF feature?

IOFF disables all outputs when VCC = 0V, blocking current flow from live I/O lines into the unpowered IC. This prevents back-current damage during hot-plug events or staggered power sequencing-critical in PC add-in cards, docking stations, and modular peripheral designs where VCC and I/O rails power up/down independently.

Does 74LV86AS14-13 require external pull-up or pull-down resistors on unused inputs?

Yes. Per datasheet Note 5, unused inputs must be tied to VCC or GND to prevent floating nodes that cause increased ICC, oscillation, or ESD susceptibility. The Schmitt-trigger inputs do not eliminate this requirement-their hysteresis only improves noise rejection on actively driven lines.

How does the Schmitt-trigger input improve system performance?

Schmitt-trigger inputs provide ≥0.3V hysteresis at 3.3V, rejecting noise spikes and slow-rising signals that could cause metastability or false toggling. In applications like IR remote decoding or LPC bus monitoring, this eliminates need for external RC filters and improves timing margin under EMI stress from switching regulators or RF modules.