onsemi 74VCX86MTCX

Overview

74VCX86MTCX from ON Semiconductor is a low-voltage quad 2-input exclusive-OR gate IC designed for logic-level translation and signal comparison in mixed-supply systems. It operates from 1.2V to 3.6V V_CC, supports 3.6V-tolerant I/O, delivers ≤3.0 ns propagation delay at 3.3V, and drives ±24 mA outputs - enabling use in battery-powered portable interfaces and FPGA I/O bridging.

For engineers reviewing the 74VCX86MTCX datasheet, pinout, applications, or equivalent options, key selection criteria include its 14-pin TSSOP package, power-off high-impedance I/O behavior, sub-3 ns AC performance at 3.3V, and compatibility with 1.2V–3.6V logic families across industrial and embedded control subsystems.

Technical Context

The 74VCX86MTCX implements four independent XOR gates using advanced CMOS process technology optimized for speed-power trade-offs in low-voltage operation. Its input and output structures are engineered for bidirectional voltage tolerance up to 3.6V regardless of V_CC level, supporting seamless interfacing between 1.2V, 1.8V, 2.5V, and 3.3V domains without external level shifters.

Each gate features static drive capability (±24 mA at 3.0V), power-off high-impedance inputs/outputs to prevent bus contention during power sequencing, and latchup immunity exceeding JEDEC 78. Dynamic switching characteristics are specified under defined load conditions (CL = 30 pF, RL = 500 Ω) with skew <0.5 ns between outputs.

Key Specifications

Pinout & Package

74VCX86MTCX is housed in a 14-lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153 compliant, 4.4 mm wide, with 0.65 mm lead pitch. The package supports surface-mount reflow assembly and provides thermal and mechanical reliability for high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC86APW and 74AUP1G86GW, the 74VCX86MTCX uniquely supports 1.2V operation and delivers the fastest propagation delay (≤3.0 ns) in a quad configuration - making it optimal for compact, multi-voltage embedded systems requiring deterministic timing and minimal component count.

Availability

74VCX86MTCX is available at Aetrix Electronics and suitable for industrial automation controllers, portable medical diagnostics, and automotive body electronics requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for 74VCX86MTCX 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

ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power management, analog, logic, and sensor solutions for automotive, industrial, cloud computing, and consumer markets.

The 74VCX86MTCX belongs to ON Semiconductor's VCX low-voltage logic family, engineered specifically for interoperability across heterogeneous voltage domains in space-constrained, battery-sensitive embedded systems.

FAQ

What is the minimum V_CC voltage supported by the 74VCX86MTCX?

The 74VCX86MTCX supports a minimum supply voltage of 1.2V, verified across all operating temperatures (−40°C to +85°C) and load conditions. This enables direct integration into ultra-low-power subsystems such as coin-cell–powered sensors and wearables where 1.8V logic families would be incompatible. Operation below 1.2V is not guaranteed and may result in undefined output states or increased propagation delay.

Does the 74VCX86MTCX require external pull-up or pull-down resistors on unused inputs?

Yes - per the datasheet's Recommended Operating Conditions, all floating or unused inputs on the 74VCX86MTCX must be held HIGH or LOW to prevent increased ICC, noise susceptibility, and potential oscillation. This requirement applies regardless of V_CC level and is enforced by internal design; no internal weak pull-ups or pull-downs are integrated into the 74VCX86MTCX.

Can the 74VCX86MTCX drive a 50 Ω transmission line directly?

No - the 74VCX86MTCX is not designed for 50 Ω line driving. Its output stage is optimized for CMOS/TTL fanout (e.g., driving 10–20 pF loads), not RF impedance matching. Driving a 50 Ω line would exceed its ±24 mA output rating at typical logic swing voltages and cause excessive VOL/VOH deviation. Use a dedicated line driver or buffer (e.g., ON Semiconductor NB3N551) for 50 Ω applications.

Is the 74VCX86MTCX pin-compatible with the older 74LCX86MTCX?

Yes - the 74VCX86MTCX shares identical pinout, package dimensions (14-lead TSSOP), and terminal functions with the 74LCX86MTCX. However, the VCX variant offers improved propagation delay (≤3.0 ns vs. ≤3.7 ns), tighter skew control (<0.5 ns vs. <1.0 ns), and enhanced 3.6V I/O tolerance robustness - making it a validated drop-in upgrade for existing LCX-based designs.

What is the maximum capacitive load the 74VCX86MTCX can drive while maintaining t_PD ≤ 3.0 ns?

The 74VCX86MTCX guarantees t_PD ≤ 3.0 ns only under the test condition CL = 30 pF and RL = 500 Ω, as specified in the AC Electrical Characteristics table. Driving loads >30 pF increases propagation delay nonlinearly - e.g., at CL = 50 pF, delay increases by ~300 ps. For timing-critical paths, keep total net capacitance ≤30 pF including trace, via, and input capacitance of downstream devices.