STMicroelectronics 74V1T86STR

Overview

74V1T86STR from STMicroelectronics is a single high-speed CMOS exclusive-OR (XOR) gate in SOT23-5L package, operating at 4.5–5.5 V with 4.8 ns typical propagation delay, ±8 mA symmetrical output drive, and input tolerance up to 7 V independent of supply. It enables 5V-to-3V level translation in logic interface circuits for industrial control I/O modules.

For engineers reviewing the 74V1T86STR datasheet, 74V1T86STR pinout, 74V1T86STR application, or 74V1T86STR equivalent, key selection criteria include propagation delay matching, input overvoltage tolerance, rail-to-rail input compatibility, and SOT23-5L thermal performance in space-constrained PCB layouts.

Technical Context

This device implements a two-input XOR Boolean function using sub-micron C2MOS technology, featuring power-down protected inputs that accept 0–7 V regardless of VCC. Its symmetrical output impedance ensures matched tPLH and tPHL delays under load.

The logic gate supports mixed-voltage interfacing via input overvoltage immunity and operates across –55°C to +125°C, with quiescent ICC ≤ 1 µA at 25°C and 8 mA minimum output drive into 4.5 V supply conditions.

Key Specifications

Pinout & Package

SOT23-5L surface-mount package: 1.5 mm × 2.8 mm footprint, 1.3 mm height, 0.95 mm lead pitch, thermally enhanced for continuous 125°C operation in compact enclosures.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G86DBVR and NC7SZ86P5X, the 74V1T86STR uniquely supports 0–7 V inputs at 5 V supply, making it the only choice for legacy 5 V logic interfacing in harsh environments where voltage transients exceed 5 V.

Availability

74V1T86STR is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, and medical patient monitor front-ends requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74V1T86STR 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, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and discrete components for industrial, automotive, and consumer markets.

The 74V series targets high-speed, low-power logic applications demanding robustness in mixed-voltage systems, with emphasis on industrial automation, automotive subsystems, and medical instrumentation requiring wide input voltage tolerance and extended temperature operation.

FAQ

Can the 74V1T86STR operate with V_CC = 3.3 V?

No. The 74V1T86STR is specified only for 4.5–5.5 V operation per its Recommended Operating Conditions table. At 3.3 V, VIH/VIL thresholds are not guaranteed, and output drive falls below specification. Use SN74LVC1G86DBVR or NC7SZ86P5X for true 3.3 V operation.

Does the 74V1T86STR require external pull-up or pull-down resistors on inputs?

No. Inputs are internally protected with power-down circuitry and do not float; they tolerate 0–7 V regardless of V_CC state. External resistors are unnecessary unless specific biasing is needed for unused inputs in multi-gate designs.

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

The AC Electrical Characteristics specify timing with CL = 15 pF and 50 pF loads. For reliable 4.8 ns propagation delay and clean edges, keep total load ≤ 50 pF including PCB trace capacitance, probe effects, and downstream input capacitance. Exceeding this increases delay and may cause ringing.

Is the SOT23-5L package RoHS-compliant and halogen-free?

Yes. Per STMicroelectronics' official product change notices and material declarations, the 74V1T86STR in SOT23-5L packaging meets RoHS Directive 2011/65/EU and is certified halogen-free (IEC 61249-2-21 compliant), with lead finish SnAgCu (SAC305) and matte tin plating.