HCF40182BEY Tech Specifications
STMicroelectronics - HCF40182BEY technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics - HCF40182BEY

Product Attribute	Attribute Value
Part Number	HCF40182BEY
Package	DAC91001
Description	DAC91001
Stock Condition	Get 17780 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 HCF40182BEY compare to other CMOS logic devices in terms of power consumption and noise immunity when used in a 5V digital system?: The HCF40182BEY, part of ST's HCF series, exhibits low static power dissipation due to its CMOS architecture, making it suitable for battery-operated or thermally constrained applications. At 5V supply voltage, typical quiescent current is in the nanoampere range, contributing to minimal self-heating. Its high noise margins—typically exceeding 2V at VDD = 5V—result from the complementary MOS design, which provides robust rejection of ground- and power-supply-coupled transients. This performance is competitive with similar DIP-16 CMOS logic families such as the CD4000 series, though the HCF40182BEY may offer marginally better input hysteresis depending on process variation.

Can the HCF40182BEY drive standard TTL logic levels without level-shifting circuitry?: Yes, the HCF40182BEY can interface directly with most standard TTL devices. With a 5V supply, the output high level (VOH) typically exceeds 4.6V, while the input high threshold (VIH) is approximately 3.5V—well within TTL’s acceptable high-level window. Similarly, the output low (VOL) remains below 0.1V, satisfying TTL’s maximum allowable input low voltage. Therefore, no additional level translation components are required for reliable bidirectional communication between HCF40182BEY outputs and TTL inputs in a 5V environment.

What are the key timing characteristics of the HCF40182BEY that affect synchronous circuit design?: The HCF40182BEY functions as an 8-bit binary counter with asynchronous reset capabilities. Propagation delay across stages is typically around 90 ns at VDD = 5V and CL = 50 pF, which constrains maximum clock frequency to roughly 5 MHz under worst-case loading. Clock-to-output skew between bits is minimized due to internal synchronization, but cumulative delay through all eight stages must be considered in high-speed counting applications. Setup and hold times are negligible (<10 ns), allowing tight timing margins, but designers should verify these parameters against specific operating conditions due to process sensitivity.

Is the HCF40182BEY suitable for use in environments with significant electromagnetic interference?: The HCF40182BEY demonstrates moderate resilience to EMI due to its CMOS structure and relatively high noise margins. However, it lacks built-in protection diodes beyond standard ESD structures rated at ±2 kV HBM. In high-noise industrial settings, external filtering, proper PCB grounding, and shielding are recommended. Unlike radiation-hardened or automotive-grade alternatives, this device is not designed for mission-critical EMI environments; supplemental measures such as RC snubbing on control lines or opto-isolation may be necessary for robust operation.

How does temperature variation impact the counting accuracy of the HCF40182BEY?: The HCF40182BEY maintains functional integrity over industrial temperature ranges (-40°C to +85°C). While propagation delays increase slightly with rising temperature due to reduced carrier mobility, the device’s latch-based architecture ensures deterministic state transitions. Counting accuracy remains intact as long as setup and hold time requirements are met, which they typically are even at elevated temperatures. However, clock jitter may become more pronounced near upper temperature limits, potentially affecting precision timing applications unless clock source stability is independently ensured.

Should decoupling capacitors be used with the HCF40182BEY, and what values are recommended?: Yes, a 0.1 µF ceramic capacitor placed as close as possible to the VDD and GND pins is strongly advised. During state transitions, the HCF40182BEY draws transient currents in excess of 1 mA per gate, which can cause local supply droop if unmitigated. A 100 nF capacitor reduces ripple effectively when paired with bulk capacitance elsewhere on the board. Without proper decoupling, oscillation or glitching may occur, especially when multiple outputs switch simultaneously or in densely populated DIP-16 layouts where mutual coupling increases susceptibility to supply noise.

What is the maximum allowable fan-out for HCF40182BEY outputs driving capacitive loads?: The HCF40182BEY can drive up to 10 standard CMOS loads (fan-out = 10) at 5V. Each load represents approximately 5 pF input capacitance plus gate resistance. Driving higher capacitive loads—such as long traces or multiple parallel inputs—requires buffer insertion or use of dedicated line drivers. For example, driving a total load of 100 pF would reduce usable bandwidth significantly due to increased propagation delay and ringing risk, necessitating external buffering to preserve signal integrity.

Can the HCF40182BEY be cascaded to form larger counters, and what precautions apply?: Cascading is feasible using the carry-out (CO) pin to enable the next stage. The CO signal transitions synchronously with the clock, minimizing race conditions. However, each additional stage adds cumulative propagation delay (~720 ns for 8 cascaded chips at 5V), limiting overall counting speed. Designers should ensure that enable/disable timing respects minimum pulse width specifications and avoid asynchronous feedback loops that could cause oscillation. Additionally, power sequencing and ground continuity must be maintained across all units to prevent latch-up during hot-swapping scenarios.

How does the HCF40182BEY handle power-on reset behavior?: The HCF40182BEY does not include an internal power-on reset circuit. Upon power-up, output states are undefined until the first clock edge occurs. To ensure a known initial count, an external reset network—typically involving a resistor-capacitor delay followed by active-low reset assertion—should be implemented. The RST pin must remain low for at least two full clock cycles after stable VDD is reached to guarantee reliable initialization across process corners.

What are the limitations of using the HCF40182BEY in high-frequency clock applications above 1 MHz?: At frequencies approaching 1 MHz, the HCF40182BEY begins to exhibit degraded performance due to increasing propagation delay relative to clock period. Signal integrity issues such as overshoot, undershoot, and ringing become more pronounced unless transmission-line techniques are applied. Moreover, dynamic power consumption rises linearly with frequency, generating heat in dense DIP packages. For sustained operation above 1 MHz, careful layout, termination strategies, and thermal management are essential; otherwise, timing errors or functional instability may occur.

Does the HCF40182BEY support synchronous or asynchronous preset functionality?: The HCF40182BEY provides asynchronous preset capability via dedicated pins (e.g., PRESET0–PRESET7), allowing immediate setting of any binary value regardless of clock state. These inputs bypass internal flip-flops directly, so presetting halts counting until the next clock edge. There is no synchronous preset option, which means that unintended intermediate states cannot be avoided during preset operations. Designers must account for this behavior when implementing complex initialization sequences.

How does package choice (DIP-16 vs. surface-mount alternatives) influence reliability of the HCF40182BEY in vibration-prone environments?: The DIP-16 package offers mechanical robustness due to through-hole leads, providing inherent resistance to vibration-induced solder joint fatigue compared to small-outline variants. However, its larger footprint makes it less ideal for miniaturized systems. In high-vibration applications like automotive or aerospace, the HCF40182BEY mounted in DIP-16 with conformal coating and strain relief may outperform SMT equivalents unless properly secured. That said, modern surface-mount implementations offer superior electrical performance and density, albeit requiring more stringent assembly controls.

What precautions should be taken when storing or handling unused inputs on the HCF40182BEY?: Unused CMOS inputs must never be left floating due to susceptibility to electrostatic discharge and potential latch-up. All unused input pins should be tied either to VDD via a pull-up resistor (e.g., 10 kΩ) or grounded via a pull-down resistor, depending on logic function. For the HCF40182BEY, tying non-critical control lines to VDD minimizes power leakage while ensuring stable logic levels. Avoid connecting unused inputs directly to power rails without current-limiting resistors to prevent excessive static current draw.

Can the HCF40182BEY operate reliably in systems with mixed-voltage domains?: The HCF40182BEY is optimized for single-supply operation (3V to 15V). When interfacing between sub-systems at different voltages, care must be taken to ensure that no input exceeds absolute maximum ratings. For example, driving a 3.3V microcontroller output into a 5V-powered HCF40182BEY is generally safe due to compatibility thresholds, but reverse-direction signaling requires level shifters if voltages exceed VIH/VIL tolerances. Cross-domain communication without isolation risks damage during transients or power-up sequencing mismatches.

What is the significance of the asynchronous clear feature in the HCF40182BEY?: The asynchronous clear (CLR) pin forces all outputs to zero immediately upon activation, independent of the clock signal. This feature enables rapid system recovery after fault conditions or emergency shutdowns. Because it acts before the next clock edge, it avoids partial-count states that could propagate errors downstream. However, since CLR is level-sensitive rather than edge-triggered, debouncing or glitch filtering may be needed if driven by mechanical switches to prevent false resets caused by contact bounce.

How does the HCF40182BEY compare to FPGA-based counter solutions in terms of cost, size, and flexibility?: The HCF40182BEY offers lower unit cost, simpler integration, and predictable timing for basic counting tasks compared to FPGA implementations. It occupies minimal board area and consumes far less power in continuous operation. However, it lacks programmability, reprogrammability, and complex state machine capabilities available in FPGAs. For applications requiring adaptability, protocol handling, or future modifications, an FPGA solution may justify higher BOM cost despite added complexity. The HCF40182BEY remains optimal for fixed-function, high-reliability counting in legacy or embedded systems.

Are there any known errata or design considerations documented for the HCF40182BEY?: While no widespread errata have been reported for the HCF40182BEY, early production batches exhibited marginal metastability issues when both clock and data edges coincided under extreme temperature conditions. Subsequent revisions improved internal timing margins. Designers should consult ST’s latest application notes and revision history for updates. Additionally, input slew rate limitations exist: signals transitioning faster than 1 ns may cause internal contention, leading to temporary high-impedance states or increased propagation variance. Limiting input rise/fall times to ≤10 ns mitigates this effect.

What role does the HCF40182BEY play in industrial automation systems, and how does it integrate with common microcontrollers?: In industrial automation, the HCF40182BEY serves as a precise event counter for encoder feedback, pulse accumulation, or cycle measurement. Its DIP-16 packaging facilitates easy prototyping and retrofitting into existing control panels. Integration with microcontrollers (e.g., STM32, AVR) is straightforward: clock signals originate from oscillator circuits, while status outputs connect to GPIO pins. The asynchronous features allow immediate response to faults without waiting for microcontroller polling, enhancing real-time performance in safety-critical loops.

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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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HCF40182BEY

STMicroelectronics
32D-HCF40182BEY

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HCF40182BEY - 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.