STMicroelectronics 74LVQ86TTR

Overview

74LVQ86TTR from STMicroelectronics is a low-voltage CMOS quad exclusive-OR gate operating from 2.0 V to 3.6 V, delivering symmetrical output drive (±12 mA), 5.5 ns typical propagation delay at 3.3 V, and 75 Ω transmission line driving capability-used in noise-sensitive 3.3 V logic interfacing, bus arbitration, and parity generation circuits.

For engineers reviewing the 74LVQ86TTR datasheet, 74LVQ86TTR pinout, 74LVQ86TTR application, or 74LVQ86TTR equivalent, key selection criteria include guaranteed PCI bus levels at 24 mA, balanced tPLH/tPHL delays, ESD immunity (2 kV), and TSSOP-14 package compatibility with 74-series logic footprints.

Technical Context

This device implements four independent XOR gates using sub-micron C2MOS technology, with input thresholds defined across 0.8 V (VIL) and 2.0 V (VIH) under 3.0–3.6 V supply, and dynamic input/output voltage specifications validated for 75 Ω transmission line driving.

It features symmetrical output impedance (|IOH| = IOL ≥ 12 mA at VCC = 3.0 V), low-noise quiet-output performance (VOLP = 0.3 V typ. at VCC = 3.3 V), and latch-up immunity improved beyond standard CMOS processes-enabling robust operation in mixed-signal embedded control systems.

Key Specifications

Pinout & Package

TSSOP-14 package: 4.4 mm × 5.0 mm body, 0.65 mm pitch, 1.2 mm max height, lead-free and RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC86APWR and 74HC86D, the 74LVQ86TTR uniquely combines 3.3 V native operation, PCI-compliant 24 mA drive, and 2 kV ESD protection-making it optimal for new industrial 3.3 V bus interfaces requiring signal integrity and interoperability.

Availability

74LVQ86TTR is available at Aetrix Electronics and suitable for industrial PLC backplanes, FPGA configuration interfaces, RS-485 motor drive controllers, and embedded parity-checking subsystems requiring stable component supply across extended temperature ranges (–55 °C to +125 °C).

Supply support for 74LVQ86TTR 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, specializing in automotive, industrial, and power management ICs with broad analog, digital, and mixed-signal portfolios.

The 74LVQ series targets low-voltage, low-noise 3.3 V logic applications-designed specifically for noise-sensitive embedded control, bus interfacing, and signal conditioning where ESD robustness and transmission-line drive matter.

FAQ

Is the 74LVQ86TTR compatible with 5 V input signals?

No. Inputs are specified for VIH = 2.0 V minimum and VIL = 0.8 V maximum at VCC = 3.0–3.6 V. Applying 5 V signals exceeds absolute maximum rating (VI ≤ VCC + 0.5 V) and risks permanent damage. Level-shifting circuitry is required for 5 V-to-3.3 V interfacing.

Does the 74LVQ86TTR support hot-swap or live-insertion?

No. The device lacks bus-hold, power-up reset, or Ioff partial-power-down features. Power sequencing must ensure VCC is stable before applying input signals, and all inputs must remain within 0–VCC during power transitions to prevent latch-up.

What is the maximum recommended output load capacitance?

AC characteristics (tPLH, tPHL, VOLP) are characterized at CL = 50 pF. Driving loads >75 pF increases propagation delay nonlinearly and degrades VOLP performance. For >100 pF loads, add series termination or buffer staging to maintain timing and noise margins.

Can the 74LVQ86TTR operate at 1.8 V?

No. The recommended operating VCC range is 2.0 V to 3.6 V. At 1.8 V, VIH/VIL thresholds are not guaranteed, propagation delay increases significantly (>15 ns), and output drive falls below specification-potentially causing logic failures in downstream receivers.