NXP Semiconductors 74HC86D,652

Overview

74HC86D,652 from Nexperia is a quad 2-input CMOS EXCLUSIVE-OR gate in SO14 (SOT108-1) package, operating from 2.0 V to 6.0 V supply, delivering propagation delay as low as 11 ns at VCC = 6.0 V and CL = 50 pF, with ±25 mA output drive capability and input clamp diodes enabling overvoltage-tolerant interfacing in digital logic systems such as parity generators and error-detection circuits.

For engineers reviewing the 74HC86D,652 datasheet, 74HC86D,652 pinout, 74HC86D,652 application, or 74HC86D,652 equivalent, this device supports high-noise-immunity combinational logic design in industrial control, instrumentation, and embedded interface subsystems where TTL- or CMOS-level compatibility, latch-up robustness (>100 mA), and -40 °C to +125 °C operation are required.

Technical Context

The 74HC86D,652 implements four independent XOR gates using standard CMOS silicon technology, each with symmetrical HIGH/LOW input thresholds referenced to VCC (VIH = 0.7×VCC min, VIL = 0.3×VCC max), enabling predictable switching across its full 2.0–6.0 V supply range. Its input clamp diodes allow safe interfacing to signals exceeding VCC when used with current-limiting resistors.

Dynamic behavior is characterized by propagation delays (tpd) from 11 ns to 180 ns depending on VCC and load, transition times (tt) from 6 ns to 75 ns, and a power dissipation capacitance (CPD) of 30 pF - enabling accurate dynamic power estimation via PD = CPD × VCC² × fi × N.

Key Specifications

Pinout & Package

74HC86D,652 is housed in a plastic small outline package (SO14, SOT108-1) with 14 leads and 3.9 mm body width, optimized for surface-mount assembly and thermal performance up to 100 °C before linear derating (10.1 mW/K).

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC86D,652, the 74HCT86D,653 offers TTL input compatibility at the cost of reduced low-VCC operability, while SN74LVC2G86DCUR delivers faster switching in smaller form factor but sacrifices input clamping and extended temperature support.

Availability

74HC86D,652 is available at Aetrix Electronics and suitable for industrial control panels, test equipment signal conditioning, and embedded communication interface modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC86D,652 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

Nexperia is a global semiconductor expert focused on essential efficiency-enhancing components, delivering high-volume, high-reliability logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74HC86D,652 belongs to Nexperia's 74HC high-speed CMOS logic family, engineered for robust, low-power combinational logic in systems demanding wide supply range, high noise immunity, and extended temperature operation.

FAQ

What is the maximum clock frequency supported by 74HC86D,652 in a toggle configuration?

The 74HC86D,652 has a typical propagation delay of 11 ns at VCC = 6.0 V and CL = 50 pF. In a toggle application (e.g., feedback XOR oscillator), the minimum period is ~2×tpd = 22 ns, supporting a theoretical maximum frequency of ~45 MHz. Actual achievable frequency depends on load capacitance, supply stability, and PCB layout parasitics.

Can 74HC86D,652 safely interface with 5 V TTL outputs without level shifting?

No - the 74HC86D,652 has CMOS input thresholds (VIH ≥ 0.7×VCC), so at VCC = 5 V it requires ≥3.5 V for HIGH recognition. While 5 V TTL outputs typically reach 3.5 V, margin is marginal. For reliable interfacing, use the pin-compatible 74HCT86D,653, which specifies VIH = 2.0 V min and is designed for TTL compatibility.

Does 74HC86D,652 require external pull-up or pull-down resistors on unused inputs?

Yes - unused CMOS inputs must be terminated to a defined logic level to prevent floating states that cause increased ICC, noise susceptibility, and potential oscillation. Tie unused A/B inputs to GND or VCC via ≤10 kΩ resistors; do not leave open. Outputs may be left unconnected if not driven.

How does the input clamp diode functionality affect PCB layout for overvoltage protection?

The integrated input clamp diodes allow safe connection of signals up to VCC + 0.5 V (per Absolute Maximum Ratings), provided external current-limiting resistors restrict IIK to ≤±20 mA. Place resistors (e.g., 1 kΩ) in series with each overvoltage-capable input, positioned as close as possible to the 74HC86D,652 pins to minimize trace inductance during transients.