onsemi NC7SP86L6X

Overview

NC7SP86L6X from Fairchild Semiconductor is a single 2-input exclusive OR gate in the TinyLogic® ULP family, designed for ultra-low-power logic-level translation and signal conditioning in battery-constrained systems. It operates across 0.9V–3.6V V_CC, delivers 3.0 ns typical propagation delay at 3.3V, supports ±2.6 mA output drive, and features power-off high-impedance I/Os - enabling use in portable medical sensors and low-voltage IoT node control paths.

For engineers reviewing the NC7SP86L6X datasheet, pinout, applications, or equivalent options, key selection criteria include its 0.9V minimum supply operation, overvoltage-tolerant I/Os (up to 3.6V at any V_CC), MicroPak™ 6-lead package footprint, and verified performance down to −40°C ambient.

Technical Context

The NC7SP86L6X implements a true XOR function (Y = A ⊕ B) using minimal-stage CMOS logic with patented Quiet Series™ noise suppression circuitry. Its input threshold scales with V_CC (VIH = 0.65×V_CC, VIL = 0.35×V_CC), and it maintains defined VOH/VOL across all operating voltages including 0.9V.

It features power-off high-impedance inputs/outputs and overvoltage-tolerant I/Os rated to 4.6V absolute max - allowing safe interfacing between mixed-voltage domains without level shifters. Static ICC is only 0.9 µA across 0.9V–3.6V.

Key Specifications

Pinout & Package

NC7SP86L6X is housed in a 6-lead MicroPak™ package (1.0 mm wide, no leads, bottom-side thermal pad), optimized for space-constrained PCB layouts and automated assembly. The package uses exposed die attach pad for thermal dissipation and requires solder paste stencil design per Fairchild's MicroPak™ guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G86DBVR and 74AUP1G86GW,125, the NC7SP86L6X uniquely balances sub-1V operation, 3.6V I/O tolerance, and MicroPak™ miniaturization - making it the only option supporting direct 0.9V–3.6V mixed-domain XOR logic in space- and battery-limited edge devices.

Availability

NC7SP86L6X is available at Aetrix Electronics and suitable for wearable biometric sensors, energy-harvesting transmitters, and low-voltage medical patch monitors requiring stable component supply through extended product lifecycles.

Supply support for NC7SP86L6X 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

Fairchild Semiconductor was a pioneer in high-efficiency power and logic ICs, acquired by ON Semiconductor in 2016; its legacy TinyLogic® portfolio remains widely deployed in ultra-low-power digital systems.

The NC7SP86L6X belongs to the TinyLogic® ULP (Ultra-Low Power) series, engineered specifically for battery-operated portable electronics where sub-1V operation, nanowatt quiescent power, and miniature packaging are mandatory design constraints.

FAQ

What is the minimum operating voltage for the NC7SP86L6X?

The NC7SP86L6X is fully specified down to 0.9V V_CC, with guaranteed functionality including propagation delay (26 ns typ), output drive (±20 µA), and input thresholds. Below 0.9V, timing and logic behavior are not characterized - the NC7SP86L6X must be operated within 0.9V–3.6V for compliance with datasheet specifications.

Does the NC7SP86L6X require external pull-up or pull-down resistors on unused inputs?

No - unused inputs on the NC7SP86L6X must be held statically HIGH or LOW per datasheet Note 3, but external resistors are not required if driven by another logic output. Floating inputs are prohibited as they cause increased ICC and potential oscillation; the NC7SP86L6X itself does not integrate internal termination.

Can the NC7SP86L6X safely interface with a 3.3V microcontroller while powered from 1.2V?

Yes - the NC7SP86L6X inputs are overvoltage tolerant up to 3.6V regardless of V_CC, so a 3.3V GPIO can drive A or B directly. Its outputs swing rail-to-rail (0V to 1.2V), requiring a level shifter only if the MCU needs 3.3V-compatible HIGH detection - the NC7SP86L6X itself sustains no damage.

What is the thermal pad connection requirement for the NC7SP86L6X MicroPak™ package?

NC7SP86L6X uses a bottom-exposed thermal pad that must be soldered to a dedicated PCB copper pour tied to GND. Fairchild recommends a 0.5 mm × 0.5 mm thermal via array (minimum 4 vias) beneath the pad to ensure junction-to-board thermal resistance ≤ 120°C/W - critical for maintaining reliability at 85°C ambient.

Is the NC7SP86L6X pin-compatible with the NC7SP86P5X variant?

No - NC7SP86L6X uses a 6-lead MicroPak™ package with pins A, B, Y, NC, V_CC, GND, while NC7SP86P5X uses a 5-lead SC70 package (A, B, Y, V_CC, GND) with no NC pin. Layout redesign and footprint change are required; the NC7SP86L6X is not a drop-in replacement for NC7SP86P5X.