STMicroelectronics HCF4510BEY

Overview

HCF4510BEY from STMicroelectronics is a presettable BCD up/down counter IC in 16-pin DIP package, featuring synchronous internal carry propagation, reset/preset capability, and operation up to 8 MHz (typ.) at 10 V. It implements four cascaded D-type flip-flops with T-type gating, supports 3–20 V supply, and counts out of non-BCD states in ≤2 (up) or ≤4 (down) clocks.

For engineers reviewing the HCF4510BEY datasheet, HCF4510BEY pinout, HCF4510BEY application, or HCF4510BEY equivalent, key selection criteria include BCD counting accuracy, synchronous vs. ripple cascading mode, VDD tolerance (3–20 V), quiescent current (≤600 µA at 15 V), and guaranteed noise margin (≥2.5 V at 15 V).

Technical Context

The HCF4510BEY operates as a fully synchronous 4-bit BCD counter with independent UP/DOWN control and dual-mode carry handling: synchronous cascading via CARRY-IN/CARRY-OUT or ripple-mode cascading by connecting CARRY-OUT to the next stage's CLOCK. Its internal gating ensures deterministic state recovery from illegal BCD codes.

It uses standard B-series CMOS technology compliant with JEDEC JESD13B, delivering symmetrical output drive (±1.36 mA at 5 V), input leakage ≤100 nA at 18 V, and propagation delays as low as 75 ns (tPLH, VDD = 15 V). Reset and preset are asynchronous but require minimum pulse width (75 ns at 15 V) and removal timing (60 ns).

Key Specifications

Pinout & Package

Package: 16-pin plastic DIP (0.300" width), JEDEC MS-001AC, body dimensions 20.0 × 8.5 mm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar BCD up/down counter applications.

Compared with CD4510BE and HEF4510BP, the HCF4510BEY delivers superior clock speed (11 MHz vs. 6 MHz), tighter input leakage (±0.1 µA vs. ±1 µA), and full 100% I_Q testing - making it optimal for precision, high-throughput counting where timing integrity and low standby current are critical.

Availability

HCF4510BEY is available at Aetrix Electronics and suitable for industrial counter systems, programmable logic controllers (PLCs), digital panel meters, and legacy test equipment requiring stable component supply and long-term obsolescence mitigation.

Supply support for HCF4510BEY 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 microcontrollers, power management ICs, sensors, and discrete components for industrial, automotive, and consumer markets.

The HCF4510BEY belongs to ST's legacy B-series CMOS logic family, engineered specifically for robust, wide-supply-voltage digital counting in harsh industrial environments where reliability and long-term availability are essential.

FAQ

Is HCF4510BEY still in active production?

No - HCF4510BEY is marked "Obsolete Product(s)" in ST's official documentation. However, Aetrix Electronics maintains a verified legacy inventory with full traceability, including original ST packaging and date codes, supporting repair, calibration, and end-of-life system sustainment.

Can HCF4510BEY operate at 3.3 V?

No - the recommended minimum supply voltage is 3 V, but DC specifications (e.g., VOH, VIH) are only guaranteed from 5 V onward per the datasheet. At 3.3 V, output levels and noise margins fall outside published limits; use only within 5–20 V range for compliant operation.

What is the maximum capacitive load for reliable CARRY-OUT switching?

The datasheet specifies dynamic tests at CL = 50 pF. For reliable CARRY-OUT operation beyond that, limit total load (including trace capacitance and driven gate inputs) to ≤75 pF - exceeding this risks violating tPHL/tPLH specs and may cause metastability in cascaded stages.

How does the UP/DOWN input behave during terminal count transitions?

If UP/DOWN changes during a terminal count (e.g., 9→0 up or 0→9 down), the CARRY-OUT must be gated with the clock signal, and UP/DOWN must change while the clock is high. This prevents race conditions and ensures clean, glitch-free carry propagation to the next stage.