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CAT811LTBI-GT3
Public Made by Adomby adom
onsemi Monitors & Reset Circuits, SOT-143-4. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownCAT811LTBI-GT3
onsemi · Monitors & Reset Circuits · SOT-143-4
CAT811LTBI-GT3 from onsemi, in a SOT-143-4. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | GND | power_in | Ground. |
| 2 | RESET | output | Active LOW push-pull reset output, asserted if VCC falls below the reset threshold and held low for at least 140 ms after VCC rises above the threshold. |
| 3 | MR | input | Active LOW manual reset input with internal 20 kΩ pull-up; a logic LOW asserts RESET for as long as MR is low plus 140 ms after it returns HIGH, and it should be left open if unused. |
| 4 | VCC | power_in | Monitored power supply voltage, with a VCC range of 1.0 V to 5.5 V (0°C to +70°C) or 1.2 V to 5.5 V (−40°C to +85°C). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | SOT-143-4 |
| Category | Power Supply Chip |
| Pins | 4 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| VCC Range | VCC | 1 | 5.5 | V | TA = 0°C to +70°C | 3 | |
| VCC Range | VCC | 1.2 | 5.5 | V | TA = -40°C to +85°C | 3 | |
| Supply Current | ICC | 8 | 20 | µA | TA = -40°C to +85°C, VCC < 5.5 V, L | 3 | |
| Reset Threshold Voltage L | VTH | 4.56 | 4.63 | 4.7 | V | L Threshold, TA = +25°C | 3 |
| Reset Threshold Voltage L | VTH | 4.5 | 4.75 | V | L Threshold, TA = -40°C to +85°C | 3 | |
| Reset Active Timeout Period | 140 | 240 | 400 | ms | TA = -40°C to +85°C | 3 | |
| RESET Output Voltage Low | VOL | 0.4 | V | VCC = VTH min, ISINK = 3.2 mA CAT811L | 4 | ||
| RESET Output Voltage Low | VOL | 0.3 | V | VCC > 1.0 V, ISINK = 50 µA | 4 | ||
| MR Minimum Pulse Width | tMR | 10 | µs | 4 | |||
| MR Input Threshold High | VIH | 2.3 | V | VCC > VTH (MAX), CAT811L | 4 | ||
| MR Input Threshold Low | VIL | 0.8 | V | VCC > VTH (MAX), CAT811L | 4 | ||
| MR Pull-up Resistance | 10 | 20 | 75 | kΩ | 4 | ||
| Reset Threshold Tempco | 30 | ppm/°C | 3 | ||||
| VCC to Reset Delay | 20 | µs | VCC = VTH to (VTH - 100 mV) | 3 | |||
| Any pin with respect to ground | -0.3 | 6 | V | 3 | |||
| Input Current, VCC | 20 | mA | 3 | ||||
| Output Current RESET | 20 | mA | 3 | ||||
| Rate of Raise, VCC | 100 | V/µs | 3 | ||||
| Continuous Power Dissipation | 320 | mW | Derate 4 mW/°C above +70°C (SOT-143) | 3 | |||
| Storage Temperature Range | -65 | 105 | °C | 3 | |||
| Operating Ambient Temperature Range | -40 | 85 | °C | 3 | |||
| Lead Soldering Temperature | 300 | °C | 10 seconds | 3 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | tin | • Available in SOT−143 Packages with Sn or NiPdAu Green Lead | 1 |
CAD (KiCad official)
- Symbol:
CAT811LTBI-GT3 - Footprint:
Package_TO_SOT_SMD:SOT-143 - 3D model: SOT-143-4 (KiCad packages3D, STEP)
- 3D model files:
cat811ltbi-gt3-etched.step/cat811ltbi-gt3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cat811ltbi-gt3.step/cat811ltbi-gt3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (10 pp, sha256
bfdb418218f49e72, retrieved 2026-10-26, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).