STMicroelectronics HCF4040M013TR

Overview

HCF4040M013TR from STMicroelectronics is a 12-stage ripple-carry binary counter IC with Schmitt-trigger clock input, buffered Q1–Q12 outputs, and common asynchronous RESET. It operates across 3–20 V supply, delivers 80 ns typical propagation delay at 10 V, and supports up to 16 MHz max clock frequency. Used in digital timing, frequency division, and event counting circuits where static operation and wide VDD tolerance are required.

For engineers reviewing the HCF4040M013TR datasheet, HCF4040M013TR pinout, HCF4040M013TR application, or HCF4040M013TR equivalent, key selection criteria include its 12-bit binary count depth, negative-edge clocking, guaranteed reset behavior, symmetrical output drive (±1.1 mA at 10 V), and full temperature range support (−55°C to +125°C).

Technical Context

The HCF4040M013TR implements a cascaded chain of 12 master-slave D-type flip-flops, advancing state on each falling edge of the Φ input. Its Schmitt-trigger input enables robust noise immunity and accepts unlimited input rise/fall times. All outputs are fully buffered to ensure consistent drive strength and loading isolation.

It features fully static CMOS operation-no minimum clock frequency requirement-and a common active-high RESET that forces all Q outputs low regardless of clock state. Quiescent current is specified up to 20 V (≤3000 µA at VDD = 20 V, TA = −55°C to +125°C), meeting JEDEC JESD13B B-series compliance.

Key Specifications

Pinout & Package

Package: 16-pin plastic DIP (Dual In-line Package), 0.3-inch body width, standard through-hole mounting.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar binary counter applications.

Compared with CD4040BE and 74HC4040PW, the HCF4040M013TR uniquely combines wide supply range (3–20 V), Schmitt-trigger robustness, and industrial temperature rating-making it optimal for legacy upgrades, battery-powered timers, and mixed-voltage industrial controls where reliability trumps raw speed.

Availability

HCF4040M013TR is available at Aetrix Electronics and suitable for industrial timer control, digital event counting, and frequency division applications requiring stable component supply, long-term obsolescence mitigation, and proven field reliability.

Supply support for HCF4040M013TR 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 HCF4040M013TR belongs to ST's legacy HCF4000B series of radiation-hardened, high-voltage CMOS logic devices-engineered for robustness in harsh environments, including extended temperature ranges and variable supply conditions.

FAQ

Is the HCF4040M013TR pin-compatible with the CD4040?

Yes-the HCF4040M013TR uses the same 16-pin DIP footprint and identical pin mapping as the industry-standard CD4040, including Q1–Q12 outputs, Φ clock, RESET, VDD, and VSS. This allows direct replacement in existing layouts without PCB modification.

Does the Schmitt-trigger input require external hysteresis components?

No-the Schmitt-trigger circuitry is fully integrated on-die. The Φ input has built-in hysteresis (typ. 1.5 V at VDD = 10 V), enabling reliable operation with slow-rising signals, long traces, or unconditioned mechanical switch inputs without external RC networks.

What is the maximum fan-out capability of each Q output?

Each Q output can drive up to 10 standard CMOS inputs (CL ≈ 50 pF) or two low-power TTL loads at VDD = 10 V. Output drive is specified at ±0.9–1.1 mA, ensuring stable logic levels even with moderate capacitive loading and trace lengths up to 10 cm.

Can the HCF4040M013TR operate reliably at 2.5 V supply?

No-absolute minimum recommended VDD is 3 V per JEDEC JESD13B and ST's datasheet. At 2.5 V, internal gate thresholds are not met, resulting in undefined logic states, increased propagation delay variability, and potential failure to advance or reset correctly.