HCF40193BM1 Tech Specifications
STMicroelectronics - HCF40193BM1 technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics - HCF40193BM1

Product Attribute	Attribute Value
Part Number	HCF40193BM1
Package	DAC91001
Description	DAC91001
Stock Condition	Get 13840 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 HCF40193BM1 compare to other decade counters in terms of power consumption and operating voltage range when used in low-power embedded designs?: The HCF40193BM1, part of STMicroelectronics' HCF4000 series, offers a balanced performance profile suitable for low-voltage digital systems. With a typical supply current of 1 µA at 5 V and 25°C, it supports operation across a wide voltage range from 3 V to 15 V, making it compatible with both 3.3 V and 5 V logic environments. This flexibility allows designers to use it in battery-powered or space-constrained applications where minimizing power draw is critical. Compared to older CMOS counter families, the HCF40193BM1 provides improved noise immunity and lower leakage, contributing to more stable long-term operation in temperature-variable conditions.

What are the key differences between synchronous and asynchronous counting modes in the HCF40193BM1, and how should this affect timing-sensitive circuit design?: The HCF40193BM1 implements an asynchronous up/down decade counter with synchronous load capability, meaning that the parallel load operation occurs on the rising edge of the clock input, while the count direction (up or down) is controlled by the UP input. Unlike fully synchronous counters, the ripple carry propagation during increment/decrement introduces small but measurable delays between digit transitions—typically in the tens of nanoseconds depending on propagation delay specifications. For high-speed applications requiring precise timing across multiple stages, this asynchronous behavior may necessitate careful PCB layout and consideration of carry chain delays to avoid race conditions or metastability.

In what scenarios would the synchronous load feature of the HCF40193BM1 be preferred over asynchronous preset methods, and how does it impact system reliability?: The synchronous load function allows the HCF40193BM1 to preload a specific binary value directly onto the counter outputs without disrupting the clock cycle, ensuring deterministic state transitions. This is particularly advantageous in systems requiring precise initialization sequences, such as digital clocks or frequency dividers where glitch-free startup is essential. Unlike asynchronous presetting, which can cause transient output changes before stabilization, synchronous loading maintains signal integrity and avoids potential false triggers in downstream logic. As a result, it enhances overall system robustness in real-time control applications.

Can the HCF40193BM1 be used in cascaded configurations for multi-digit counting, and what precautions must be taken regarding clock synchronization and carry propagation?: Yes, the HCF40193BM1 supports cascading for multi-decade counting by connecting the carry-out (RCO) of one stage to the enable inputs (UP and DOWN) of the next. However, due to its asynchronous nature, each stage experiences cumulative propagation delays—each typically around 80–100 ns under typical conditions. To ensure reliable operation beyond two stages, clock skew must be minimized, and sufficient setup time margins should be allocated between clock edges and valid data on shared control lines. Additionally, using buffered clocks or synchronized enable signals helps prevent misalignment in complex cascades.

How does the input threshold voltage of the HCF40193BM1 behave across its full supply voltage range, and why might this matter when interfacing with TTL-level signals?: The HCF40193BM1 has CMOS-compatible input thresholds that scale with supply voltage. At 5 V operation, the VIH (minimum high-level input voltage) is approximately 3.5 V, aligning closely with standard TTL high levels. However, as the supply drops toward 3 V, the VIH threshold decreases proportionally—around 2.1 V at 3 V VDD. This means that near the bottom of the operating range, TTL outputs (which may only guarantee 2.4 V at 3.3 V) could fall below the required logic-high level, risking incorrect interpretation. Therefore, interface circuits may require level shifting or pull-up resistors to maintain reliable communication with legacy TTL devices.

What impact does temperature have on the maximum clock frequency of the HCF40193BM1, and how should engineers derate performance in industrial-grade applications?: The HCF40193BM1’s maximum clock frequency decreases as temperature increases due to degraded carrier mobility and higher parasitic capacitance effects in the CMOS structure. According to typical datasheet curves, the fMAX drops from ~10 MHz at 25°C to about 6 MHz at 85°C. In industrial applications spanning -40°C to +85°C, designers should assume worst-case fMAX at elevated temperatures and derate their design accordingly. A common practice is to limit actual operating frequencies to 60–70% of the nominal maximum to provide margin against process variation, temperature drift, and aging effects.

When selecting between the HCF40193BM1 and a dedicated BCD-to-7-segment decoder IC, what trade-offs emerge in terms of component count, power, and flexibility?: Using the HCF40193BM1 alone requires additional discrete components—such as decoders or lookup tables—to drive seven-segment displays, increasing board area and power consumption slightly due to extra logic levels. However, this approach offers greater flexibility in display formatting, dynamic digit blanking, or custom encoding schemes. In contrast, integrated decoder-counter ICs consolidate functionality but lock users into fixed decoding rules. The HCF40193BM1 thus becomes preferable when customization outweighs integration benefits, especially in prototyping or evolving product lines where display logic may change frequently.

How does the package type SOP16 influence thermal and electrical performance compared to smaller alternatives like TSSOP or QFN in compact designs?: The SOP16 package of the HCF40193BM1 provides adequate thermal dissipation for most low-current digital applications due to its relatively large exposed pad and lead frame. While not optimized for extreme heat loads, it supports continuous operation within standard industrial temperature ranges without active cooling. Electrically, the longer leads introduce modest inductance and capacitance, which can slightly limit high-frequency performance compared to surface-mount variants like QFN. However, for typical counter frequencies (<1 MHz), these parasitics have negligible effect. Engineers choosing SOP16 benefit from ease of hand soldering and compatibility with legacy assembly lines, albeit at the cost of reduced pin density relative to modern miniaturized packages.

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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.
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HCF40193BM1

STMicroelectronics
32D-HCF40193BM1

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HCF40193BM1 - 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.