STMicroelectronics 74V1G86STR

Overview

74V1G86STR from STMicroelectronics is a single high-speed CMOS XOR gate in SOT23-5L package, operating from 2V to 5.5V supply, with 4.8ns typical propagation delay at 5V, ±8mA symmetrical output drive, and input tolerance up to 7V independent of VCC-enabling robust 5V-to-3V level translation in digital interface logic.

For engineers reviewing the 74V1G86STR datasheet, 74V1G86STR pinout, 74V1G86STR application, or 74V1G86STR equivalent, key selection criteria include its rail-to-rail input voltage acceptance (0–7V), power-down protected inputs, balanced tPLH/tPHL delays, and guaranteed 1µA max ICC at 25°C for ultra-low static power in battery-sensitive systems.

Technical Context

This device implements a two-input exclusive-OR logic function using sub-micron C2MOS technology, with all inputs featuring power-down protection that allows safe operation even when VCC = 0V and inputs are driven up to 7V. Its symmetrical output impedance ensures matched rise/fall times and minimal skew between logic transitions.

The IC supports mixed-voltage interfacing without external biasing: inputs accept 0–7V regardless of VCC (2–5.5V), and output VOH/VOL meet TTL/CMOS thresholds across the full supply range-e.g., VOH ≥ 4.4V at VCC = 4.5V, IOH = –8mA; VOL ≤ 0.55V at same condition, IOL = 8mA.

Key Specifications

Pinout & Package

SOT23-5L package: 5-pin surface-mount, 1.45mm max height, 0.95mm pitch, JEDEC MO-178 compliant. Pin 1 marked by notch or bevel; moisture sensitivity level (MSL) 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G86DBVR and NC7SZ86P5X, the 74V1G86STR uniquely combines 7V input tolerance, –55°C to +125°C operation, and power-down protection-making it the only choice for automotive and industrial mixed-voltage logic where reliability under fault conditions is mandatory.

Availability

74V1G86STR is available at Aetrix Electronics and suitable for motor control feedback, industrial serial interface, automotive sensor signal conditioning, and low-power IoT edge logic requiring stable component supply across extended temperature and mixed-voltage environments.

Supply support for 74V1G86STR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, MCU, power, and discrete devices for industrial, automotive, and consumer markets.

The 74V series targets high-reliability, wide-supply CMOS logic with enhanced robustness-specifically engineered for automotive and industrial applications demanding extended temperature range, overvoltage tolerance, and latch-up immunity.

FAQ

Can 74V1G86STR operate with VCC = 0V while inputs are driven?

Yes. All inputs feature power-down protection, allowing safe application of 0–7V signals even when VCC = 0V. This prevents back-powering and latch-up during partial system power-down-critical in modular systems where subsystems power up/down asynchronously.

What is the maximum capacitive load this XOR gate can drive reliably?

The device is characterized up to 50pF load (tPLH/tPHL tested at CL = 15pF and 50pF). With ±8mA drive strength, it reliably drives ≥10 standard CMOS inputs (CIN ≈ 4pF each) or one 50pF transmission line stub without added buffering-provided trace lengths remain under 5cm at 100MHz toggle rates.

Does 74V1G86STR require external pull-up or pull-down resistors on unused inputs?

No. Unused inputs may be left floating due to integrated input protection circuitry and guaranteed noise immunity (VNIH/VNIL ≥ 28% VCC). However, for deterministic logic state and EMI reduction in noisy environments, tying unused inputs to VCC or GND is recommended per STMicroelectronics application guidance.

How does the 74V1G86STR handle input signals transitioning outside the 0–VCC range?

Inputs tolerate –0.5V to +7.0V continuously. Negative excursions below GND are clamped by internal diodes; positive excursions above VCC are handled via power-down protection-no external components needed. This enables direct connection to legacy 5V buses while powered from 3.3V, with no risk of damage or false logic states.