STMicroelectronics HCF4078M013TR

Overview

HCF4078M013TR from STMicroelectronics is a CMOS 8-input NOR/OR gate IC in SO-14 package, implementing positive-logic 8-input NOR and OR functions with propagation delay of 75 ns (typ.) at VDD = 10 V, quiescent current ≤0.5 µA at 10 V, and supply range 3–20 V. It serves as a logic combiner in digital control subsystems requiring dual-function gate-level integration.

For engineers reviewing the HCF4078M013TR datasheet, HCF4078M013TR pinout, HCF4078M013TR application, or HCF4078M013TR equivalent, key selection factors include its dual-output NOR/OR architecture, guaranteed operation up to 125°C, ±100 nA input leakage at 18 V, 50 pF load timing performance, and compatibility with legacy 4000B-series logic families.

Technical Context

The HCF4078M013TR integrates two independent logic outputs - pin 13 (NOR) and pin 1 (OR) - driven by eight common inputs (pins 2–5, 9–12). Its internal structure implements direct wired-OR/NOR summation without intermediate buffers, preserving fan-in integrity across the full 3–20 V supply range.

It adheres to JEDEC JESD13B for B-series CMOS devices, supports rail-to-rail input voltage (0 to VDD), delivers VOH ≥9.95 V and VOL ≤0.05 V at VDD = 10 V, and maintains noise margins of ≥2 V under those conditions.

Key Specifications

Pinout & Package

Package: SO-14 (Small Outline, 14-pin, surface-mount), compliant with mechanical data PO13G, body width 3.9 mm, pitch 1.27 mm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-input NOR/OR logic applications.

Compared with CD4078BE and MC14078BDR2G, HCF4078M013TR uniquely combines SO-14 packaging, 75 ns speed at 10 V, and guaranteed -55°C to +125°C operation - making it optimal for new SMT designs demanding compactness, speed, and extended temperature resilience.

Availability

HCF4078M013TR is available at Aetrix Electronics and suitable for industrial control logic, automotive body controllers, legacy system interface adapters, and high-voltage sensor interfaces requiring stable component supply across extended temperature and voltage ranges.

Supply support for HCF4078M013TR 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 microcontrollers, power ICs, sensors, and analog/mixed-signal chips for industrial, automotive, and consumer markets.

HCF4078M013TR belongs to the HCF4000B series of radiation-hardened, high-voltage CMOS logic devices intended for ruggedized digital control, power sequencing, and fault-monitoring applications where reliability across extreme conditions is critical.

FAQ

Is HCF4078M013TR pin-compatible with CD4078BE?

No - while both implement identical logic functions and share the same pin numbering scheme, HCF4078M013TR uses an SO-14 package with 1.27 mm pitch, whereas CD4078BE is DIP-14 with 2.54 mm pitch. Physical mounting and PCB layout are incompatible; only functional equivalence exists.

Can HCF4078M013TR operate reliably at 20 V supply?

Yes - its absolute maximum VDD rating is +22 V, and recommended operating range extends to 20 V. At 20 V, quiescent current remains ≤150 µA (max), VOH ≥19.95 V, and propagation delay improves to 55 ns (typ.), confirmed per STMicroelectronics' DC and dynamic specifications table.

What is the purpose of pins 6 and 8 being marked NC?

Pins 6 and 8 have no internal connection and serve only as mechanical placeholders in the SO-14 mold. Leaving them unconnected prevents unintended capacitive coupling or ESD discharge paths; routing traces or vias to them may degrade noise immunity or cause latch-up under transient stress.

Does HCF4078M013TR support mixed-voltage interfacing (e.g., 3.3 V inputs with 15 V VDD)?

No - input voltage must stay within 0 to VDD per datasheet limits. With VDD = 15 V, VIH = 11 V min and VIL = 4 V max; applying 3.3 V inputs would fall below VIL and register as indeterminate or low. Level-shifting circuitry is required for sub-VDD logic interfacing.