STMicroelectronics HCF4042M013TR

Overview

HCF4042M013TR from STMicroelectronics is a quad clocked D latch IC with polarity-controlled transparent/latched operation, 4 independent data latches, complementary Q/Q̅ outputs per latch, and TTL-compatible input thresholds. It operates from 3V to 20V supply, supports common-clock strobing, and is used in industrial control logic, digital instrumentation bus interfacing, and level-sensitive data capture circuits.

For engineers reviewing the HCF4042M013TR datasheet, HCF4042M013TR pinout, HCF4042M013TR application, or HCF4042M013TR equivalent, key selection criteria include clock polarity programming (active-high/low latch enable), symmetrical output drive (±1.1 mA @ 5V), quiescent current stability up to 20V, and JEDEC B-series CMOS compliance for legacy system integration.

Technical Context

The HCF4042M013TR implements four independent edge-triggered D latches sharing one CLOCK input and one global POLARITY control line. Latch behavior is determined by POLARITY: when low, latching occurs on CLOCK low level; when high, latching occurs on CLOCK high level - enabling flexible synchronization with either active-low or active-high clock domains.

All outputs feature standardized symmetrical drive strength (VOH ≥ 4.95 V, VOL ≤ 0.05 V at VDD = 5 V), balanced N/P-channel output impedance, and buffered Q/Q̅ pairs. Input leakage is specified ≤100 nA at VDD = 18 V, and propagation delays range from 40 ns (tPHL, VDD = 15 V) to 450 ns (tPLH, VDD = 5 V).

Key Specifications

Pinout & Package

Package: SO-16 (Small Outline, 16-pin, 3.9 mm body width, 1.27 mm pitch). Compliant with JEDEC MS-012 and STMicroelectronics mechanical drawing PO13H.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad D latch applications.

Compared with CD4042BE and MC14042BDR2G, the HCF4042M013TR offers superior high-voltage robustness (20 V rated), guaranteed symmetrical drive, and JEDEC-compliant testing - making it optimal for industrial systems demanding long-term supply continuity and wide-VDD tolerance.

Availability

HCF4042M013TR is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, digital panel meter interfaces, legacy bus data capture, and test equipment signal conditioning requiring stable component supply across extended temperature and voltage ranges.

Supply support for HCF4042M013TR 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, Switzerland, designing and manufacturing analog, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.

The HCF4042M013TR belongs to ST's legacy HCF4000B series of radiation-hardened, high-voltage CMOS logic devices - engineered specifically for ruggedized industrial control, instrumentation, and aerospace-adjacent applications where reliability across extreme VDD and temperature ranges is mandatory.

FAQ

What is the maximum operating voltage for HCF4042M013TR?

The absolute maximum supply voltage is +22 V, but the recommended operating range is 3 V to 20 V. Operation above 20 V is not guaranteed for parametric performance or long-term reliability. All DC and dynamic specifications - including quiescent current, propagation delay, and output drive - are fully characterized up to 20 V per JEDEC JESD13B.

Does HCF4042M013TR support true edge-triggered operation?

No - it is a level-sensitive transparent latch, not an edge-triggered flip-flop. Latching occurs during the steady-state level of CLOCK defined by POLARITY (high or low), not on transitions. To emulate edge triggering, external circuitry (e.g., pulse generators) must convert edges to valid level durations meeting tW (minimum clock pulse width) requirements.

Can HCF4042M013TR drive LEDs directly?

Yes - each output can source or sink up to ±1.1 mA at VDD = 5 V, sufficient to illuminate low-current indicator LEDs (e.g., 2 mA @ 1.8 V forward drop) with appropriate series resistors. At VDD = 15 V, sink capability increases to ±2.4 mA, enabling direct drive of higher-brightness LEDs without external transistors.

Is the SO-16 package RoHS compliant?

Yes - the HCF4042M013TR (SO-16, part code suffix "M013TR") is manufactured in STMicroelectronics' RoHS-compliant, lead-free process. The "TR" suffix denotes tape-and-reel packaging, and the device meets EU Directive 2011/65/EU with homogeneous lead content < 1000 ppm, verified per IEC 62321 testing protocols.