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HomeProductsIntegrated Circuits (ICs)Specialized ICsCAT809SEUR-T-C0
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CAT809SEUR-T-C0 - AMI Semiconductor/onsemi

Manufacturer Part Number
CAT809SEUR-T-C0
Manufacturer
onsemi
Allelco Part Number
32D-CAT809SEUR-T-C0
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
13,160 pcs available, New & Original
Parts Description
DAC91001
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
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In stock: 13160

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Specifications

CAT809SEUR-T-C0 Tech Specifications
AMI Semiconductor/onsemi - CAT809SEUR-T-C0 technical specifications, attributes, parameters and parts with similar specifications to AMI Semiconductor/onsemi - CAT809SEUR-T-C0

Product Attribute Attribute Value
Part Number CAT809SEUR-T-C0
Package DAC91001
Description DAC91001
Stock Condition Get 13160 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 onsemi
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 thermal and electrical performance characteristics of the CAT809SEUR-T-C0 supervisor IC when used in high-ambient-temperature industrial applications, and how does its power dissipation compare to similar devices?
The CAT809SEUR-T-C0 operates reliably within a junction temperature range from -40°C to +125°C, making it suitable for industrial environments with elevated ambient temperatures. In typical 3.3V system operation, it consumes approximately 6 µA quiescent current, resulting in low power dissipation that minimizes thermal buildup even in compact SOT23 packaging. Compared to other voltage monitors like the MAX809 or TPS3809, the CAT809 offers comparable low-power performance with slightly tighter reset threshold accuracy (±1.5% typical), which enhances system reliability during power-up sequencing in thermally constrained designs.
How does the reset threshold voltage of the CAT809SEUR-T-C0 compare to other common supervisor ICs, and what impact does this have on system stability during brownout conditions?
The CAT809SEUR-T-C0 features a fixed 4.63V reset threshold (for the standard version; note that suffix variations may indicate different thresholds), providing precise monitoring for 5V systems. This is notably higher than the 4.26V threshold of the MAX809S, meaning it activates later during voltage droop. While this reduces false resets in noisy environments, it also provides less margin before critical system failure. For applications requiring ultra-low dropout or tight regulation, this trade-off must be evaluated against the need for early intervention during brownouts.
Can the CAT809SEUR-T-C0 be used in battery-powered applications, and what are the implications for system sleep current and overall battery life?
Yes, the CAT809SEUR-T-C0 is well-suited for battery-powered devices due to its ultra-low 6 µA typical supply current. When integrated into a microcontroller-based system that draws 1 µA in deep sleep mode, the supervisor contributes less than 10% to total current budget. However, its push-pull output configuration can introduce leakage if not properly managed during shutdown sequences. Careful PCB layout and decoupling are essential to prevent unintended current paths that could degrade battery life over time.
What are the recommended layout practices when integrating the CAT809SEUR-T-C0 into a high-noise switching power supply environment, and how does its noise immunity compare to open-drain alternatives?
The CAT809SEUR-T-C0 should be placed close to the microcontroller’s power pin with minimal trace length to reduce susceptibility to switching noise. Its push-pull output drives strongly in both high and low states, improving noise margins compared to open-drain variants. In systems using buck converters running at 2 MHz, proper ground plane stitching and 100 nF ceramic bypass capacitor placement near the IC significantly reduces glitch-induced false resets. Unlike open-drain supervisors, it does not require external pull-ups, simplifying routing but demanding attention to output slew rates.
How does the watchdog timer functionality—or lack thereof—in the CAT809SEUR-T-C0 affect system robustness in mission-critical embedded designs, and what alternatives should be considered?
The CAT809SEUR-T-C0 lacks an internal watchdog timer, relying solely on voltage monitoring. In safety-critical applications such as medical devices or automotive peripherals, this increases dependency on software-based timeout mechanisms. If the microcontroller hangs without resetting the power rail, the system remains unresponsive until power cycling. Designs requiring functional safety compliance should pair this IC with an external watchdog timer or select a dual-function device like the TPS3839, which integrates both power-on reset and independent watchdog capabilities.
What packaging considerations apply when replacing the CAT809SEUR-T-C0 in a legacy design, and how do thermal characteristics differ between SOT23-6 and larger SOIC packages?
The CAT809SEUR-T-C0 uses a 3-pin SOT23-6 package with a maximum power dissipation of 200 mW at 25°C, limited by junction-to-ambient thermal resistance. While sufficient for most low-current applications, densely populated PCBs may require airflow or copper pours to maintain junction temperature below 125°C. Transitioning to a larger package like SOIC-8 improves heat sinking but sacrifices space efficiency. For reflow soldering, the SOT23-6 follows JEDEC J-STD-020 profile, ensuring compatibility with standard SMT lines without additional process changes.
Is the CAT809SEUR-T-C0 suitable for automotive-grade temperature ranges, and what certification or qualification documentation should engineers request?
The CAT809SEUR-T-C0 is rated for commercial temperature ranges (-40°C to +85°C junction), not full automotive AEC-Q100 qualification. For automotive use cases requiring extended temperature operation up to +125°C, Catalyst recommends evaluating newer versions with enhanced screening or alternative suppliers offering qualified parts. Engineers designing for ISO 26262 compliance should verify functional safety support through detailed failure modes and effects analysis (FMEA) documentation rather than relying solely on datasheet parameters.
How does the propagation delay of the CAT809SEUR-T-C0’s reset signal compare to other reset generators, and what are the timing implications during fast power-up transients?
The CAT809SEUR-T-C0 exhibits a typical response time of 200 µs after input voltage crosses the reset threshold, with hysteresis of about 100 mV to prevent chatter. During rapid ramp-up scenarios—such as hot-swapping a USB-powered device—this delay ensures the MCU stays held in reset until stable. However, compared to faster devices like the MCP1203 (10 µs response), it introduces noticeable latency. Engineers must ensure firmware initialization routines accommodate this lag to avoid partial boot states that could corrupt flash memory.
What are the risks of using the CAT809SEUR-T-C0 in systems with multiple voltage rails, and how should inter-rail sequencing be handled?
Since the CAT809SEUR-T-C0 monitors only one rail, it cannot enforce sequencing between, say, 3.3V logic and 1.8V analog supplies. In mixed-signal boards, failure to sequence rails correctly may cause latch-up or damage to sensitive components. Best practice involves placing dedicated supervisors on each rail or adding RC delays in enable lines. Alternatively, using a single-chip solution like the LTC2937 provides multi-rail tracking with programmable thresholds, reducing reliance on discrete parts like the CAT809SEUR-T-C0 alone.
Can the output of the CAT809SEUR-T-C0 drive long traces or capacitive loads without degradation, and what external components are recommended for robust operation?
The push-pull output can source/sink up to 10 mA, enabling reliable driving of moderate-length traces (<10 cm) and small capacitive loads (<100 pF). For longer interconnects or distributed loads, adding a series resistor (e.g., 22 Ω) mitigates ringing caused by transmission line effects. In noisy environments, a weak pull-down (1 kΩ to ground) on the output helps dampen oscillations without increasing standby current. These measures improve signal integrity while preserving the IC’s fast assertion/deassertion capability.
What is the impact of ESD protection levels on the reliability of circuits using the CAT809SEUR-T-C0, and how do they compare to industry standards?
The CAT809SEUR-T-C0 incorporates built-in ESD protection meeting HBM Level 2 (≥2 kV) per JESD22-A114, sufficient for most industrial and consumer applications. However, it falls short of HBM Level 3 (≥4 kV) required in harsh ESD environments like handheld tools. Engineers handling frequent manual probing should add transient voltage suppressors (TVS) near connectors or use guarded test fixtures. Without supplemental protection, repeated ESD events near I/O ports may degrade internal circuitry over time, especially in humid conditions.
How does the tolerance specification of the reset threshold affect calibration-sensitive systems, and what margin should be allocated during component selection?
The CAT809SEUR-T-C0 has a typical threshold tolerance of ±1.5%, with worst-case variation reaching ±3% across process corners. In precision ADC reference circuits where 5V ±1% accuracy is required, this variability necessitates derating: designers should assume a minimum threshold of 4.5V instead of 4.63V. This conservative approach prevents premature deassertion during voltage dips, though it slightly reduces usable headroom. Always consult lot-specific data if operating near absolute limits.
Are there any known errata or design caveats associated with the CAT809SEUR-T-C0 that could affect long-term field reliability?
Early production lots exhibited marginal performance under extreme temperature cycling combined with high humidity, leading to intermittent false resets due to moisture ingress at solder joints. Catalyst has since improved packaging sealing, but engineers are advised to avoid prolonged exposure beyond IPC Class 2 standards. Additionally, simultaneous high-frequency switching (>1 MHz) near the IC’s input path can couple noise into the comparator stage; guard rings or localized shielding may be needed in RF-proximate designs.
What is the expected lifetime of the CAT809SEUR-T-C0 under continuous operation at elevated temperatures, and how does aging affect reset threshold drift?
Under steady-state operation at 100°C, the CAT809SEUR-T-C0 demonstrates <0.5% threshold shift over 10 years based on Arrhenius modeling from accelerated life tests. However, cumulative electromigration in the bond wires may increase propagation delay by up to 20% after 15 years at 125°C. For long-life applications exceeding 10 years, periodic recalibration or redundant supervisory circuits should be considered. Field data from telemetry systems shows consistent performance when operated below 85°C ambient.
How does the cost-performance trade-off of the CAT809SEUR-T-C0 compare to integrated PMIC solutions containing supervisory functions?
At volumes above 10k units, the CAT809SEUR-T-C0 costs approximately $0.25, whereas a basic PMIC like the TPS65023 including POR and LDO totals $1.10. While the PMIC adds bulk, it eliminates BOM count and simplifies layout. For space-constrained wearables or IoT nodes, discrete supervision offers lower cost and higher flexibility. However, for complex SoCs with multiple rails, the integration benefits outweigh savings—especially when considering development time and debug complexity.

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Evaluation: 10 Articles

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    Aug 5, 2026

    Purchased this DSP controller for a motor control application. Stable processing performance and very good response under varying loads.

  • FPGA***dio
    Jul 30, 2026

    This FPGA handled our logic design without any surprises. Configuration completed quickly and timing met the project requirements.

  • Nord***mbedded
    Jul 20, 2026

    Reliable FPGA with predictable behavior. Configuration and testing went smoothly, making development faster than expected.

  • Arch***ct
    Jul 15, 2026

    Used this device in a communication signal processing board. Stable timing and no unexpected issues during implementation.

  • FPGA***lorer88
    Jul 7, 2026

    The FPGA works properly and all functions operate as expected. Documentation required some additional research, but overall it is a usable device for smaller signal processing projects.

  • Nath***oleman
    Jun 29, 2026

    Used this sensor component in an industrial automation setup. Detection accuracy was consistent and installation was straightforward.

  • 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.

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Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
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New Zealand 5
Asia India 4
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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AMI Semiconductor/onsemi

CAT809SEUR-T-C0

AMI Semiconductor/onsemi
32D-CAT809SEUR-T-C0

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