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HomeProductsIntegrated Circuits (ICs)Logic - Counters, DividersHCF40193BEY
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HCF40193BEY - STMicroelectronics

Manufacturer Part Number
HCF40193BEY
Manufacturer
STMicroelectronics
Allelco Part Number
98D-HCF40193BEY
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
13,267 pcs available, New & Original
Parts Description
IC BINARY COUNTER 4-BIT 16DIP
Package
16-DIP
Data sheet
-
RoHs Status
ROHS3 Compliant
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In stock: 13267

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Specifications

HCF40193BEY Tech Specifications
STMicroelectronics - HCF40193BEY technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics - HCF40193BEY

Product Attribute Attribute Value
Manufacturer STMicroelectronics
Voltage - Supply 3 V ~ 20 V
Trigger Type Positive Edge
Timing Synchronous
Supplier Device Package 16-DIP
Series 4000B
Reset Asynchronous
Package / Case 16-DIP (0.300", 7.62mm)
Package Tube
Product Attribute Attribute Value
Operating Temperature -55°C ~ 125°C
Number of Elements 1
Number of Bits per Element 4
Mounting Type Through Hole
Logic Type Binary Counter
Direction Up, Down
Count Rate 11 MHz
Base Product Number HCF4019

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Frequently Asked Questions(FAQ)

How does the HCF40193BEY handle asynchronous reset in a synchronous counting sequence, and what are the timing implications for system initialization?
The HCF40193BEY features an asynchronous reset function that immediately clears the 4-bit counter regardless of the clock signal, allowing for rapid initialization during power-up or fault conditions. However, because the main counting operation is synchronous (triggered on the positive edge of the clock), the asynchronous reset must be deasserted before the first clock edge to ensure proper synchronization. If reset is active when the clock transitions high, the counter will clear but may not respond correctly to subsequent edges until the reset condition is fully removed and at least one clock cycle occurs. In practical applications, designers often use a delay circuit or RC network to hold reset long enough for the system to stabilize before releasing it, ensuring reliable start-up behavior.
What supply voltage range should be considered when integrating the HCF40193BEY with mixed-voltage logic systems, and how does this affect compatibility with common microcontroller interfaces?
The HCF40193BEY operates across a wide supply range from 3 V to 20 V, making it suitable for interfacing with both low-voltage microcontrollers (e.g., 3.3 V ARM Cortex parts) and legacy 5 V or even higher-voltage industrial control systems. This broad compatibility allows direct connection without level shifters in many cases, provided that the microcontroller’s I/O pins can tolerate up to 20 V. However, care must be taken when using the chip near the upper end of its voltage range, as input threshold voltages scale with supply—meaning noise margins decrease at higher voltages. For reliable operation at 3 V, ensure that all control signals meet the minimum input high level specified for that rail, which may require pull-up resistors if driving from a 3.3 V CMOS device with slightly elevated thresholds.
Can the HCF40193BEY be used in bidirectional counting applications requiring direction control, and what design considerations arise from its up/down counting capability?
Yes, the HCF40193BEY supports both up and down counting through dedicated control inputs (typically U/D and clock enable), making it ideal for applications like encoder tracking or reversible motor control. When switching direction, the transition between counting modes must account for potential glitches or intermediate states. To avoid erroneous counts during mode changes, it's recommended to momentarily disable counting by holding the clock enable pin low while changing the direction signal. Additionally, the synchronous design ensures that state transitions occur only on rising clock edges, so any asynchronous changes in the direction input between clocks could lead to unintended intermediate states if not managed carefully. Proper debouncing and sequencing of control signals are essential for robust bidirectional operation.
How does the maximum count rate of 11 MHz impact the HCF40193BEY’s suitability for high-speed data acquisition or timing-critical systems?
With a maximum count rate of 11 MHz, the HCF40193BEY is well-suited for moderate-speed timing and counting tasks such as frequency measurement, event logging, or pulse accumulation, but not for very high-frequency signal processing above this threshold. At 11 MHz, the propagation delay through the internal logic limits how closely spaced clock pulses can be without risking missed transitions. For example, with a 50% duty cycle clock at 11 MHz, each half-cycle lasts approximately 45 ns, so timing margins are tight. Designers must ensure that fan-out delays, PCB trace lengths, and loading on clock lines do not degrade effective performance below usable levels. In most embedded systems operating under 5 MHz, however, the part performs reliably without significant timing constraints.
What are the key differences between the HCF40193BEY and alternative devices like the CD40193BE or CD4516BE in terms of reset behavior and count enable functionality?
While the HCF40193BEY shares functional similarity with the CD40193BE and CD4516BE, there are subtle distinctions in electrical characteristics and reset implementation. The CD40193BE uses a synchronous reset, whereas the HCF40193BEY employs an asynchronous reset, giving the latter faster response during startup or error recovery. Additionally, the CD4516BE lacks a dedicated count enable input and relies solely on clock gating, making the HCF40193BEY more flexible for precise control over counting intervals. The HCF series also benefits from STMicroelectronics’ enhanced process technology, offering lower power consumption and improved noise immunity compared to older CMOS variants. These differences make the HCF40193BEY preferable in designs where fast reset and independent count enable are required.
Is the HCF40193BEY suitable for automotive or industrial environments requiring extended temperature ranges, and what packaging considerations apply?
Absolutely. The HCF40193BEY is rated for operation from -55°C to +125°C, aligning it with AEC-Q100 qualified components commonly used in automotive and harsh industrial settings. Its 16-pin DIP package facilitates easy integration into existing through-hole layouts, though surface-mount versions may be preferred in space-constrained designs due to better thermal dissipation and assembly efficiency. The plastic DIP housing provides adequate protection against moisture and mechanical stress within standard environmental conditions, especially when soldered properly and subjected to conformal coating if deployed in humid or corrosive atmospheres. Given its RoHS3 compliance and REACH unaffected status, it meets global regulatory requirements for commercial, industrial, and consumer electronics alike.
How should decoupling capacitors be sized and placed when using the HCF40193BEY in a multi-IC digital system to prevent supply noise?
For stable operation of the HCF40193BEY, a 0.1 µF ceramic capacitor should be placed as close as possible to the VCC and GND pins of the 16-DIP package, ideally within 5 mm of the IC. This helps suppress high-frequency transients caused by switching current spikes during clock transitions, particularly important given the part’s 11 MHz capability. Additionally, a bulk tantalum or electrolytic capacitor (e.g., 10–100 µF) may be included near the power entry point to handle slower load variations. Since the device supports up to 20 V, ensure that transient voltages on the supply rail never exceed this limit, as excessive droop or ripple could cause incorrect state retention or false triggering.
Can multiple HCF40193BEY chips be cascaded to create wider counters, and what synchronization challenges arise from asynchronous resets across stages?
Yes, cascading multiple HCF40193BEY units is common to build 8-bit or 16-bit counters by connecting the carry-out of one stage to the clock input of the next. However, because each unit has an asynchronous reset, simultaneous reset assertion across all chips can cause race conditions if not coordinated. To maintain consistent initialization, either use a buffered reset line with minimal skew or implement a staggered reset scheme using additional logic. Furthermore, clock distribution becomes critical; clock skew between stages must remain less than the setup time to prevent metastability or incorrect incrementing. In practice, keeping traces matched and limiting fan-out helps preserve timing integrity, though for very large counters, synchronous reset architectures or dedicated counter ICs may offer better reliability.

Parts with Similar Specifications

The three parts on the right have similar specifications to STMicroelectronics HCF40193BEY

Product Attribute HCF4018BEY HCF4017BEY HCF4020BEY HCF4020M013TR
Part Number HCF4018BEY HCF4017BEY HCF4020BEY HCF4020M013TR
Manufacturer STMicroelectronics STMicroelectronics STMicroelectronics STMicroelectronics
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Base Product Number - DAC34H84 MAX500 ADS62P42
Reset - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Voltage - Supply - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Direction - - - -
Trigger Type - - - -
Number of Bits per Element - - - -
Number of Elements - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Series - - - -
Timing - - - -
Logic Type - - - -
Count Rate - - - -

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
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QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
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We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.
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Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


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Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
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HCF40193BEY Image

HCF40193BEY

STMicroelectronics
98D-HCF40193BEY

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