HCF40174BM1 Tech Specifications
STMicroelectronics - HCF40174BM1 technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics - HCF40174BM1

Product Attribute	Attribute Value
Part Number	HCF40174BM1
Package	DAC91001
Description	DAC91001
Stock Condition	Get 4770 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)

How does the HCF40174BM1 handle voltage regulation in low-power applications, and what are the implications for battery life in portable designs?: The HCF40174BM1 operates within a supply voltage range of 2V to 6V, making it suitable for low-power and battery-operated systems. Its low quiescent current and efficient power management reduce overall energy consumption, directly contributing to extended battery life in wearable devices and IoT sensors. Designers should ensure stable input filtering to prevent noise-induced leakage, as even minor fluctuations can increase standby current beyond typical datasheet specifications.

What is the maximum propagation delay of the HCF40174BM1, and how does it impact timing-critical digital circuits?: With a typical propagation delay of 120 ns at VDD = 5V, the HCF40174BM1 is adequate for moderate-speed digital logic but may introduce noticeable skew in high-frequency clock chains. In systems requiring tight synchronization, such as multi-stage shift registers or synchronous counters, this delay can accumulate and necessitate careful layout and buffer insertion to maintain signal integrity.

Can the HCF40174BM1 be used in cascaded configurations, and what precautions are needed to avoid race conditions?: Yes, the HCF40174BM1 can be cascaded for wider decoding applications, provided that output enable (OE) signals are coordinated and propagation delays are accounted for. Mismatched delays between stages may cause transient glitches on intermediate outputs. It is advisable to use edge-triggered clocking and implement inter-stage synchronization logic to suppress such effects during state transitions.

How does temperature variation affect the switching characteristics of the HCF40174BM1, particularly in automotive or industrial environments?: Operating across -40°C to +85°C, the HCF40174BM1 maintains stable switching thresholds and propagation delay within specified tolerances. However, at elevated temperatures, the rise and fall times may increase slightly due to reduced carrier mobility in CMOS structures. Engineers should derate timing margins in high-reliability applications and validate performance under worst-case thermal conditions through lab testing.

What is the recommended layout strategy when integrating the HCF40174BM1 into a mixed-signal PCB design?: To minimize coupling between digital and analog sections, place the HCF40174BM1 away from sensitive analog traces and decoupling capacitors should be located within 1mm of its VDD pin. Ground plane continuity beneath the package helps reduce ground bounce, especially during high-current switching events. Avoid routing clock lines parallel to data paths to prevent capacitive crosstalk.

How does the HCF40174BM1 compare to the CD4017BE in terms of noise immunity and power consumption?: While both are CMOS decade counters, the HCF40174BM1 offers improved noise immunity due to higher input hysteresis and tighter process control, resulting in lower susceptibility to electromagnetic interference. Additionally, it consumes less static power across the entire operating voltage range, making it preferable for modern energy-conscious designs over legacy parts like the CD4017BE.

What are the key differences between the HCF40174BM1 and the 74HC4017 in terms of speed and compatibility?: The HCF40174BM1 uses CMOS technology with a maximum clock frequency of 10 MHz, whereas the 74HC4017 typically supports up to 30 MHz due to faster transistor switching. However, the HC variant requires higher input voltage levels relative to VDD, which can complicate level-shifting in mixed-voltage systems. The HCF part is better suited for direct interfacing with 5V microcontrollers without additional translation circuitry.

Is it acceptable to leave unused inputs floating on the HCF40174BM1, and what risks does this pose?: Leaving inputs unconnected risks creating unintended latch-up or oscillation due to capacitive coupling or stray pick-up. Unused inputs should be tied to VDD or GND via a 10 kΩ resistor to ensure defined logic levels and prevent excessive input bias currents from flowing into the device. This precaution also reduces susceptibility to electrostatic discharge (ESD).

How does the HCF40174BM1 perform under transient load conditions, such as rapid switching of multiple outputs?: Under simultaneous output transitions, the HCF40174BM1 exhibits brief shoot-through currents that can cause temporary supply droop. With a typical output current capability of ±2 mA per pin, designers must ensure that local bypass capacitance and trace inductance do not lead to voltage instability. A 100 nF ceramic capacitor placed close to the IC mitigates most transient effects.

Can the HCF40174BM1 drive LED arrays directly, and if not, what interface method is recommended?: Direct driving of high-brightness LEDs is limited by the IC’s ±2 mA sink/source capability. For arrays requiring higher currents, an external transistor stage or dedicated driver IC should be used. Alternatively, multiplexing with low-duty-cycle operation can leverage the HCF40174BM1’s outputs efficiently while staying within thermal limits.

What precautions are necessary when soldering the HCF40174BM1 in mass production environments?: Given its small SOT23-6 footprint, reflow profiles must adhere to IPC standards with peak temperatures below 260°C for no more than 10 seconds to prevent solder joint degradation. Nitrogen atmosphere reflow improves wetting and reduces void formation, enhancing long-term reliability in harsh environments.

How does the HCF40174BM1 support fail-safe operation in safety-critical systems?: With Schmitt-trigger inputs, the HCF40174BM1 provides built-in noise filtering and hysteresis, reducing the chance of false triggering during system resets or power-up transients. Combined with predictable state initialization upon reset, this feature enhances robustness in medical monitoring or automotive diagnostic modules where signal integrity is paramount.

What is the significance of the "H" prefix in ST’s HCF series, and how does it influence component selection?: The "H" denotes high-density packaging and improved ESD protection compared to standard CMOS variants. For the HCF40174BM1, this means enhanced tolerance to human-body model (HBM) discharges up to 2 kV, making it more suitable for handheld and field-deployable equipment exposed to handling stresses.

How can the HCF40174BM1 be used in conjunction with a microcontroller to implement a dynamic display controller?: By connecting the microcontroller’s GPIOs to the OE and RST pins, the HCF40174BM1 can sequentially activate segments of a multiplexed LED display. The microcontroller sets the enable state and initializes the counter, allowing the IC to cycle through outputs autonomously—reducing CPU overhead and enabling smooth flicker-free visuals at low update rates.

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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

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Delivery Cost

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Delivery Method

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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
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.

QC (Quality Warranty)
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Packaging
Certifications & Memberships

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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.

ESD

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Third-party certified, strict quality control. Our certification

ISO 9001: 2015
ISO 13485: 2016
ISO 14001: 2015
ISO 28000: 2007
ISO 45001: 2018
GB/T 27922-2011

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HCF40174BM1

STMicroelectronics
32D-HCF40174BM1

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HCF40174BM1 - 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.