NXP Semiconductors HEF4077BP,652

Overview

HEF4077BP,652 from Nexperia is a quad 2-input EXCLUSIVE-NOR gate in SO14 (SOT108-1) package, operating from 3.0 V to 15.0 V supply, with propagation delays as low as 25 ns at 15 V and ±10 mA output drive capability. It serves as a logic-level combinational gate in digital control, interface translation, and signal conditioning circuits across industrial and embedded systems.

For engineers reviewing the HEF4077BP,652 datasheet, HEF4077BP,652 pinout, HEF4077BP,652 application, or HEF4077BP,652 equivalent, key selection criteria include its wide VDD range (3–15 V), symmetrical CMOS output characteristics, -40 °C to +85 °C temperature rating, and JEDEC JESD13-B compliance for interoperability in legacy and mixed-voltage designs.

Technical Context

The HEF4077BP,652 implements four independent EXNOR logic functions using standard CMOS architecture, with input clamp diodes enabling safe interfacing to voltages exceeding VDD when used with current-limiting resistors. Its fully static operation ensures stable DC logic states without clocking requirements.

Each gate exhibits identical input/output behavior: HIGH-level output voltage (VOH) ≥ 4.95 V at VDD = 5 V, LOW-level output voltage (VOL) ≤ 0.05 V, and input thresholds (VIH/VIL) scaled proportionally with VDD - e.g., VIH = 11.0 V at VDD = 15 V - supporting robust noise immunity across supply variants.

Key Specifications

Pinout & Package

HEF4077BP,652 is housed in a plastic small outline package (SO14), SOT108-1 variant: 14-lead, 3.9 mm body width, 1.27 mm lead pitch, and gull-wing surface-mount terminals.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar EXNOR logic applications.

Compared with CD4077BE and 74HC86, the HEF4077BP,652 delivers faster propagation (25 ns vs. 150 ns), tighter output symmetry, and integrated input clamping - making it optimal for industrial timing-critical applications where direct XNOR logic and overvoltage tolerance are required without added components.

Availability

HEF4077BP,652 is available at Aetrix Electronics and suitable for industrial control logic, legacy system interface translation, digital power sequencing monitoring, and security access validation requiring stable component supply and long-term manufacturability.

Supply support for HEF4077BP,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 high-volume, high-reliability logic, discrete, and MOSFET solutions, serving automotive, industrial, and consumer markets with scalable manufacturing and rigorous quality standards.

The HEF4077BP,652 belongs to Nexperia's 4000B-series CMOS logic family, engineered for compatibility with legacy 4000-series designs while delivering enhanced ESD robustness, tighter parametric control, and extended temperature reliability for industrial deployment.

FAQ

What logic function does the HEF4077BP,652 implement?

The HEF4077BP,652 implements four independent 2-input EXCLUSIVE-NOR (XNOR) logic gates. Each gate outputs HIGH only when both inputs are identical (both LOW or both HIGH), per the functional table in its datasheet. This behavior is confirmed across all operating conditions from -40 °C to +85 °C and supply voltages of 3 V to 15 V. The HEF4077BP,652 does not perform XOR, NAND, or other logic functions - its sole defined function is XNOR.

Is the HEF4077BP,652 pin-compatible with older 4000-series XNOR devices?

Yes, the HEF4077BP,652 uses the standard 14-pin SO14 (SOT108-1) footprint and identical pin configuration as legacy HEF4077B variants and CD4077B devices: pins 1/5/8/12 are A inputs, 2/6/9/13 are B inputs, 3/4/10/11 are Y outputs, pin 7 is VSS, and pin 14 is VDD. No PCB layout changes are needed when replacing functionally equivalent 4000B-series XNOR ICs, provided thermal and decoupling practices meet Nexperia's recommendations for the HEF4077BP,652.

Does the HEF4077BP,652 support mixed-voltage interfacing?

Yes, the HEF4077BP,652 supports mixed-voltage interfacing through integrated input clamp diodes, which allow safe connection of inputs to voltages up to VDD + 0.5 V when used with appropriate current-limiting resistors. For example, with VDD = 5 V, inputs may be driven from 12 V sources using ~1 kΩ series resistors - verified in Nexperia's limiting values table (VI max = VDD + 0.5 V). This eliminates external level shifters in many industrial sensor interface applications involving the HEF4077BP,652.

What is the maximum operating frequency supported by the HEF4077BP,652?

The HEF4077BP,652 does not specify a maximum clock frequency, as it is a combinational logic device without internal clocking. Its usable switching rate is determined by propagation delay and load capacitance: at VDD = 15 V and CL = 50 pF, tPHL/tPLH is 30 ns max, supporting reliable operation up to approximately 16 MHz for repetitive square-wave inputs. Real-world frequency limits depend on signal integrity, fan-out, and board parasitics - all validated in the HEF4077BP,652 dynamic characteristics section.

How does the HEF4077BP,652 handle unused inputs?

Unused inputs on the HEF4077BP,652 must be terminated to a defined logic level - either VDD or VSS - to prevent floating nodes that cause increased power consumption, noise susceptibility, or erratic output behavior. Leaving inputs unconnected violates the "fully static operation" guarantee and risks violating the absolute maximum input voltage rating. Nexperia explicitly recommends tying all unused A/B inputs directly to VDD or VSS; no pull-up/pull-down resistors are required due to the device's CMOS input structure. This applies uniformly across all four gates in the HEF4077BP,652.