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CAT811LTBI-GT3

Public Made by Adom

by adom

onsemi Monitors & Reset Circuits, SOT-143-4. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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CAT811LTBI-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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cat811ltbi-gt3.step / cat811ltbi-gt3.glb are 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, primary claude-sonnet-5-5 (text), consensus claude-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).

Datasheet PDF