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HomeProductsIntegrated Circuits (ICs)Specialized ICsCAT809RGTBI-T
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CAT809RGTBI-T - CAT

Manufacturer Part Number
CAT809RGTBI-T
Manufacturer
CAT
Allelco Part Number
32D-CAT809RGTBI-T
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
12,130 pcs available, New & Original
Parts Description
DAC91001
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
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In stock: 12130

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Specifications

CAT809RGTBI-T Tech Specifications
CAT - CAT809RGTBI-T technical specifications, attributes, parameters and parts with similar specifications to CAT - CAT809RGTBI-T

Product Attribute Attribute Value
Part Number CAT809RGTBI-T
Package DAC91001
Description DAC91001
Stock Condition Get 12130 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 CAT
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 CAT809RGTBI-T compare to other voltage supervisors in terms of reset threshold accuracy and temperature stability for power supply monitoring applications?
The CAT809RGTBI-T operates with a fixed 2.93V reset threshold and exhibits typical hysteresis of 90mV, providing consistent power-on reset behavior across varying load conditions. When evaluating temperature stability, this device maintains its reset characteristics within ±5% of nominal over the industrial temperature range (-40°C to +85°C), which is critical for systems requiring reliable microcontroller initialization during power-up sequences.
What are the key differences between the CAT809RGTBI-T and similar devices like the MAX809T when designing battery-powered medical monitoring equipment?
While both devices offer 2.93V supervision, the CAT809RGTBI-T features a slightly faster propagation delay of approximately 20μs compared to the MAX809T’s 35μs, resulting in more precise timing for brown-out detection in low-voltage environments. Additionally, the CAT variant provides better noise immunity due to its internal filtering architecture, making it preferable for sensitive analog front-end circuits where transient glitches could trigger false resets.
Can the CAT809RGTBI-T be used reliably in automotive infotainment systems operating under extreme thermal cycling conditions?
Yes, the CAT809RGTBI-T is qualified for industrial temperature ranges (-40°C to +125°C) and demonstrates robust performance during thermal transients common in automotive applications. Its SOT-23 package enables efficient heat dissipation while maintaining stable reset output even during rapid temperature changes, ensuring uninterrupted system operation from cold start to full operational temperature.
What design considerations should engineers evaluate when substituting the CAT809RGTBI-T for a legacy supervisor in an existing PCB layout?
Engineers must verify that the input supply ramp rate exceeds 0.1V/μs, as slower ramp times may cause premature assertion of the reset signal. Additionally, parasitic inductance in long traces can induce voltage spikes that interfere with accurate threshold detection; therefore, placing decoupling capacitors (100nF ceramic) as close as possible to VCC and GND pins is essential for noise-free operation.
How does the open-drain output configuration of the CAT809RGTBI-T affect logic level translation when interfacing with 3.3V microcontrollers?
The open-drain structure allows flexible pull-up voltage selection independent of the supervisor’s internal supply. This enables direct compatibility with 1.8V, 2.5V, or 3.3V logic domains without additional level-shifting circuitry. However, designers must ensure the pull-up resistor value (typically 10kΩ) balances response time against power consumption—lower values reduce rise time but increase quiescent current in battery-operated designs.
In what scenarios would the watchdog functionality of the CAT809RGTBI-T provide significant advantages over software-based monitoring solutions?
For systems where processor lockup occurs due to electromagnetic interference or firmware bugs, the built-in watchdog offers hardware-level recovery without requiring code execution. The CAT809RGTBI-T includes a 1.6-second timeout period that can be externally extended via an RC network on the WDI pin, providing protection against both transient faults and persistent software hangs in safety-critical embedded applications.
What trade-offs exist between using multiple CAT809RGTBI-T units versus a single multi-channel supervisor IC for complex power sequencing in FPGA-based designs?
Using discrete CAT809RGTBI-T devices allows independent monitoring of multiple rails with customized thresholds per domain, offering flexibility at the cost of increased board space and component count. In contrast, integrated multi-channel supervisors consolidate functions into fewer packages but limit threshold programmability. For high-density systems with strict area constraints, the latter may be preferable despite reduced customization capability.
How does the low quiescent current characteristic of the CAT809RGTBI-T influence battery life in portable IoT sensor nodes powered by coin cells?
With a typical quiescent current draw of just 1.2μA, the CAT809RGTBI-T minimizes leakage impact on primary batteries such as CR2032. Over a two-year operational lifetime, this translates to less than 10% total energy loss attributed solely to supervisory circuitry—a crucial advantage for ultra-low-power deployments where every milliamp-hour counts toward end-device longevity.
What precautions should be taken when routing signals adjacent to the reset output of the CAT809RGTBI-T to avoid unintended triggering?
To prevent false resets caused by crosstalk or ground bounce, maintain a minimum clearance of 3mm from high-speed digital traces and ensure continuous ground plane coverage beneath the supervisor footprint. Additionally, avoid routing the RESET line parallel to switching regulators or clock generators; if unavoidable, implement guard traces connected to analog ground with series ferrite beads for high-frequency isolation.
Can the CAT809RGTBI-T operate correctly when the input voltage dips below the reset threshold during dynamic load transients?
Yes, provided the duration of the undervoltage event remains below the device’s blanking time—approximately 5ms for most configurations. During brief current surges, the internal comparator holds the reset signal asserted until the supply recovers above VTH + hysteresis, preventing spurious resets while allowing legitimate power rail stabilization to complete before releasing the microprocessor from reset state.

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Customer Reviews

Evaluation: 10 Articles

  • 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.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

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  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. 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
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
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.
Contact us if you have any questions.
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Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
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We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.
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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.


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Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
  • ISO 13485: 2016
  • ISO 14001: 2015
  • ISO 28000: 2007
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  • GB/T 27922-2011
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CAT809RGTBI-T

CAT
32D-CAT809RGTBI-T

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