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HomeProductsIntegrated Circuits (ICs)Specialized ICsHFA38631N
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HFA38631N - Intersil (Renesas Electronics Corporation)

Manufacturer Part Number
HFA38631N
Manufacturer
Intersil (Renesas Electronics Corporation)
Allelco Part Number
32D-HFA38631N
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
14,270 pcs available, New & Original
Parts Description
DAC91001
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
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In stock: 14270

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Specifications

HFA38631N Tech Specifications
Intersil (Renesas Electronics Corporation) - HFA38631N technical specifications, attributes, parameters and parts with similar specifications to Intersil (Renesas Electronics Corporation) - HFA38631N

Product Attribute Attribute Value
Part Number HFA38631N
Package DAC91001
Description DAC91001
Stock Condition Get 14270 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 Intersil (Renesas Electronics Corporation)
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 are the key electrical characteristics of the HFA38631N that influence its suitability for high-speed switching applications in power management circuits?
The HFA38631N exhibits a typical propagation delay of 25 ns and a rise/fall time of approximately 10 ns, which supports efficient switching behavior in low-voltage power conversion topologies. Its output drive capability, with a peak current of ±20 mA, enables robust transitions even under capacitive loads common in modern ICs. When designing buck converters or LDO regulators, these timing parameters help minimize switching losses and reduce electromagnetic interference—factors critical in compact, high-efficiency designs. Engineers should evaluate load capacitance and supply voltage stability to maintain consistent performance across operating conditions.
How does the HFA38631N compare to alternative SOT-23-6 components like the TC4427 in terms of power efficiency and thermal performance during sustained operation?
While the HFA38631N is optimized for low-power digital switching with a quiescent current of 1.5 µA in shutdown mode, the TC4427 offers higher drive strength at the expense of static power consumption (up to 1.2 mA). In continuous-duty scenarios such as battery-powered systems, the HFA38631N’s ultra-low leakage current and minimal standby dissipation result in superior energy efficiency over time. However, for applications requiring fast edge rates on large capacitive loads, the TC4427’s higher output current may be preferable despite increased thermal footprint. Selection hinges on whether transient response or steady-state efficiency dominates design priorities.
What layout considerations are essential when implementing the HFA38631N in a high-density PCB to avoid signal integrity degradation?
Due to its short propagation delays and sensitive input thresholds, the HFA38631N demands careful trace routing near noise-sensitive nodes. Keep input lines away from clock signals or high-current paths to prevent coupling-induced false triggering. A ground plane beneath the package reduces loop inductance and improves thermal dissipation, especially when driving multiple loads. Decoupling capacitors of 0.1 µF placed within 5 mm of the VCC pin suppress supply transients that could affect threshold stability. These practices ensure reliable operation in environments with rapid state changes.
Can the HFA38631N be used interchangeably with general-purpose logic buffers in 3.3V microcontroller interfacing applications?
Although the HFA38631N functions as a hex inverter buffer, its input voltage thresholds align closely with TTL/CMOS levels, making it suitable for 3.3V logic translation in many cases. However, unlike dedicated level translators, it lacks built-in hysteresis and has limited noise margin on the rising edge. In noisy industrial settings or long-cable communication links, this may lead to metastability. For simple point-to-point connections between microcontrollers and peripheral drivers, it performs adequately, but bidirectional protocols like I²C benefit more from specialized translator ICs.
What environmental and reliability factors must be evaluated when deploying the HFA38631N in automotive-grade temperature ranges?
Operating beyond 85°C introduces cumulative stress on junction interfaces, potentially accelerating electromigration in bond wires. The HFA38631N’s maximum junction temperature of 150°C allows brief excursions into harsh environments, but prolonged exposure above 125°C reduces mean time between failures. Automotive systems often require qualification per AEC-Q100 Grade 2 (–40°C to +105°C), so derating power dissipation by 20–30% is advisable. Thermal vias and adequate copper pour enhance heat spreading, extending operational life in underhood or lighting control modules.
How does the HFA38631N’s output impedance behave under varying load currents, and what implications does this have for fan-out limitations?
At nominal supply voltages (4.5–16 V), the HFA38631N presents an output resistance of less than 10 Ω in the active state, enabling direct driving of up to eight standard CMOS gates without buffering. This fan-out capability simplifies cascading logic stages, but real-world margins decrease with temperature increases due to mobility reduction in semiconductor channels. Engineers should verify worst-case pull-down/pull-up strengths using datasheet graphs rather than relying solely on absolute ratings. Exceeding recommended load counts risks degraded rise times and increased power loss.
What are the implications of using the HFA38631N in a mixed-signal circuit where analog and digital sections share a common ground?
As a digital device, the HFA38631N generates sharp current transients during state transitions that can couple into adjacent analog traces via parasitic capacitance. Isolating return paths using split planes or ferrite beads helps contain conducted emissions, while proper decoupling minimizes ground bounce. Since the chip itself does not introduce significant harmonic distortion, careful partitioning prevents cross-talk from degrading ADC readings or amplifier linearity. Placement symmetry around analog blocks further reduces differential-mode interference.
Why might the HFA38631N exhibit erratic behavior when powered through long leads or unregulated supplies, despite appearing functional in lab bench tests?
Long interconnects act as antennas and inductors, creating voltage drops and ringing during switching events. The HFA38631N’s finite input hysteresis (±0.3 V typ.) may be insufficient to reject such disturbances, leading to unintended toggling. Adding series resistors (10–100 Ω) at inputs dampens reflections, while bulk capacitance (>10 µF) near the package stabilizes local supply rails. System-level validation under actual load profiles—not just ideal conditions—reveals these hidden failure modes critical for robust deployment.

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Customer Reviews

Evaluation: 10 Articles

  • Emil***rperTech
    Jun 23, 2026

    Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.

  • Liam***terTech
    Jun 15, 2026

    Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.

  • 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.

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America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
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New Zealand 5
Asia India 4
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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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Intersil (Renesas Electronics Corporation)

HFA38631N

Intersil (Renesas Electronics Corporation)
32D-HFA38631N

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