STMicroelectronics 74LVX86TTR

Overview

74LVX86TTR from STMicroelectronics is a low-voltage CMOS quad exclusive-OR gate with 5V-tolerant inputs, operating from 2V to 3.6V supply, delivering 5.8 ns typical propagation delay at 3.3V, ±4 mA symmetrical output drive, and 2 µA max quiescent current - used in 3.3V logic interfacing, battery-powered level translation, and noise-sensitive digital signal conditioning.

For engineers reviewing the 74LVX86TTR datasheet, 74LVX86TTR pinout, 74LVX86TTR application, or 74LVX86TTR equivalent, key selection criteria include 5V input tolerance, sub-10 ns propagation delay at 3.3V, symmetrical output impedance, low-noise VOLP (0.3 V typ), and guaranteed operation down to 2V supply voltage.

Technical Context

The 74LVX86TTR implements four independent XOR logic functions using sub-micron C2MOS technology, supporting true bidirectional 5V-to-3.3V level translation without external components. Its input structure accepts 0–7V regardless of VCC, enabling safe hot-plug and mixed-voltage bus interfacing.

All gates feature balanced tPLH/tPHL propagation delays (≤1.0 ns skew), low dynamic noise (VOLP = 0.3 V typ), and integrated ESD protection (2 kV HBM) on every I/O. Power-down protection ensures zero-current leakage when VCC = 0 V.

Key Specifications

Pinout & Package

TSSOP-14 package: 4.4 mm × 5.0 mm body, 0.65 mm pitch, 1.05 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 74LVC86PW and SN74AHC86DR, the 74LVX86TTR uniquely combines 5V input tolerance, sub-6 ns speed at 3.3V, and zero-current power-down - making it optimal for battery-operated, mixed-voltage, and noise-critical edge-node applications where reliability under partial power states is mandatory.

Availability

74LVX86TTR is available at Aetrix Electronics and suitable for industrial sensor interfaces, battery-powered IoT nodes, USB activity monitors, and 3.3V/5V mixed-voltage system interfacing requiring stable component supply and long-term lifecycle support.

Supply support for 74LVX86TTR 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, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.

The 74LVX series targets low-voltage, low-power 3.3V logic applications with 5V-tolerant I/O - engineered specifically for portable, battery-constrained, and noise-sensitive digital systems.

FAQ

Can 74LVX86TTR operate with V_CC = 1.8 V?

No. The device's recommended operating V_CC range is strictly 2.0 V to 3.6 V per Table 5. At 1.8 V, DC parameters including V_OH, V_OL, and noise margins fall outside specification, and propagation delay increases unpredictably. For 1.8 V systems, consider the 74LVC86 instead.

Does 74LVX86TTR require external pull-up resistors on inputs?

No. Inputs are internally protected with clamping diodes and exhibit <±1 µA leakage at 5 V, eliminating need for external pull-ups in most configurations. However, floating inputs must be avoided - unused inputs should be tied to V_CC or GND to prevent increased ICC and potential oscillation.

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

The 74LVX86TTR is characterized up to 50 pF (Table 7). Driving >50 pF increases t_PD nonlinearly and raises VOLP/VOLV noise - for >60 pF loads, add series termination or buffer stages. Layout parasitics (trace capacitance >5 pF/inch) must be included in total CL budget.

Is 74LVX86TTR pin-compatible with standard 74HC86?

Yes - it matches the SO-14 and TSSOP-14 pinouts and logic function of 74HC86, but differs electrically: 74LVX86TTR operates only at 2–3.6 V (not 2–6 V), offers 5V-tolerant inputs (HC86 does not), and draws significantly less ICC (2 µA vs. ~40 µA at 3.3 V).