HCF4017BM1 Tech Specifications
STMicroelectronics - HCF4017BM1 technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics - HCF4017BM1

Product Attribute	Attribute Value
Part Number	HCF4017BM1
Package	DAC91001
Description	DAC91001
Stock Condition	Get 8950 pcs available quantity at Allelco
Payment	PayPal / TT / Credit Card / Western Union
Allelco Certifications	ESD / ISO 9001 / ISO 13485 / ISO 28000

Product Attribute	Attribute Value
Manufacturer	STMicroelectronics
RoHs Status	-
Warranty	100% Perfect Functions
Transport port	Hong Kong
Shipping by	DHL / FedEx / UPS / TNT / SF Express
RFQ Email	info@allelco.com

Frequently Asked Questions(FAQ)

What is the maximum supply voltage rating for the HCF4017BM1 in typical digital logic applications?: The HCF4017BM1, based on its CMOS technology and ST's standard design practices, supports a maximum supply voltage of 20 VDC under normal operating conditions. This allows integration into systems where intermediate-voltage power rails are present, such as 12V or 15V control circuits, without requiring additional level-shifting circuitry.

How does the propagation delay of the HCF4017BM1 compare to other decade counter ICs like the CD4017BE when used in high-speed sequencing applications?: While exact timing varies with load capacitance and supply voltage, the HCF4017BM1 typically exhibits propagation delays in the range of 60 ns at 10 VDD due to its advanced CMOS fabrication process. Compared to the CD4017BE, which may show delays closer to 100–120 ns under similar conditions, this improved speed enables faster state transitions in clocked counting circuits, benefiting LED ring counter refresh rates above 10 kHz.

Can the HCF4017BM1 be used in low-power battery-operated devices, and what precautions should be taken regarding clock input integrity?: Yes, the HCF4017BM1 operates efficiently at low voltages down to 3 V, making it suitable for battery-powered designs such as remote sensors or portable indicators. However, care must be taken to ensure that the clock signal remains within valid logic thresholds; noise on the clock line can cause unintended state changes, especially at higher frequencies, necessitating proper decoupling and possibly Schmitt-trigger buffering if sourced from an asynchronous microcontroller output.

In a sequential switching application using the HCF4017BM1 to activate relays one at a time, how much current can each output sink before risking damage?: Each output pin of the HCF4017BM1 is rated to sink up to 2.8 mA continuously under standard operating conditions. Exceeding this limit risks degrading the output driver structure. For relay coil driving, an external transistor stage—such as a BJT or MOSFET—must be employed, as direct connection could compromise reliability over time.

What is the recommended method to reset the HCF4017BM1 during system initialization, and how does the reset pin interact with the clock enable function?: The HCF4017BM1 features a dedicated reset (MR) pin that forces all outputs to zero when asserted high, regardless of the clock state. This pin operates independently of the clock enable (EN) function, allowing clean initialization even if the clock is active. Designers should pull MR low after power-up and hold it until the desired starting state is reached, typically by applying a brief reset pulse synchronized with the clock’s inactive phase.

How does temperature affect the count stability of the HCF4017BM1 in extended industrial environments?: Within its specified operating range of -40°C to +125°C, the HCF4017BM1 maintains deterministic counting behavior thanks to its robust CMOS architecture. However, at elevated temperatures near 100°C, internal leakage currents may slightly increase, potentially causing marginal glitches on slow-decaying clock signals. Proper layout, bypass capacitance, and clock edge shaping mitigate these effects in most practical implementations.

Can the HCF4017BM1 drive multiple LEDs directly from different output pins simultaneously without current-limiting resistors?: No, connecting LEDs directly to the HCF4017BM1 outputs without series resistors is not advisable. Although the IC can source or sink limited current per pin, LEDs require precise forward voltage and current control. Omitting resistors risks exceeding the 2.8 mA per-pin limit and causes inconsistent brightness across outputs. A resistor value around 330 Ω to 1 kΩ, depending on LED forward voltage and desired current, should be used for safe operation.

When cascading two HCF4017BM1 ICs to extend counting beyond ten stages, how should the carry-out signal be properly routed?: To cascade HCF4017BM1 units, connect the Q9 (carry-out) output of the first IC to the clock input of the second device. Ensure both clocks are synchronized and that the second IC’s reset pin is held inactive unless shared globally. Note that internal propagation delays may accumulate, so verify timing margins if fast transition rates are required, and consider adding minimal debounce filtering on the carry chain to prevent metastable states.

Does the HCF4017BM1 support bidirectional counting, and if not, what alternative configuration achieves similar functionality?: The HCF17BM1 does not natively support bidirectional counting. It only increments sequentially from Q0 to Q9 upon rising clock edges. To implement up/down counting, an external logic circuit—such as a multiplexer or discrete logic gates—must combine the count enable and direction signals with the clock to generate appropriate control inputs for two or more HCF4017BM1 ICs in parallel.

What impact does supply voltage fluctuation have on the noise margin of the HCF4017BM1, particularly when interfacing with TTL logic levels?: As the HCF4017BM1 is a CMOS device, its noise margins decrease linearly with lower supply voltages. At 5 V, it provides full compatibility with TTL logic families, but at 3.3 V, input threshold levels shift toward mid-supply, reducing tolerance to noise spikes. When interfacing with TTL outputs at reduced VDD, ensure the TTL output high voltage exceeds the CMOS VIH(min), which may require level translation or pull-up resistors to maintain reliable logic recognition.

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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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Common Countries Logistic Time Reference
Region	Country	Logistic Time(Day)
America	United States	5
America	Brazil	7
Europe	Germany	5
	United Kingdom	4
	Italy	5
Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	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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ISO 9001: 2015
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HCF4017BM1

STMicroelectronics
32D-HCF4017BM1

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HCF4017BM1 - STMicroelectronics

Specifications

Frequently Asked Questions(FAQ)

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

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

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.

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。

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

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

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

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.

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.

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.

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.