# MAX6343SUT+T

**MAXIM INTEGRATED** · Global Sourcing Parts · SOT-23-6

MAX6343SUT+T from MAXIM INTEGRATED, in a SOT-23-6. 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 | VCC | power_in | Supply voltage; operates from +1V to +5.5V, with a 1µF bypass capacitor recommended close to the pin. |
| 2 | GND | power_in | Ground. |
| 3 | PFI | input | Power-fail voltage monitor input; when PFI is below 1.25V, PFO goes low, and it should be connected to GND or VCC when not used. |
| 4 | PFO | output | Power-fail voltage monitor output, independent of the reset output, which goes low when PFI is below 1.25V. |
| 5 | MR | input | Manual-reset input; pull low to force a reset, which stays active while MR is low and for the reset timeout period after MR goes high, and leave unconnected or connect to VCC if unused. |
| 6 | RESET | output | Active-low open-drain reset output on the MAX6343 that stays low for 180ms after VCC rises above the reset threshold or MR goes from low to high, needing a pull-up resistor to a supply up to +5.5V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MAXIM INTEGRATED |
| Package | SOT-23-6 |
| Category | Global Sourcing Parts |
| Pins | 6 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply Voltage Range | VCC | 1 |  | 5.5 | V |  | 2 |
| Supply Current | ICC |  | 25 | 40 | µA | VCC = 3V, TA = -40°C to +85°C, no load | 2 |
| Supply Current | ICC |  | 25 | 50 | µA | VCC = 3V, TA = -40°C to +125°C, no load | 2 |
| Supply Current | ICC |  | 30 | 50 | µA | VCC = 5.5V, TA = -40°C to +85°C, no load | 2 |
| Supply Current | ICC |  | 30 | 60 | µA | VCC = 5.5V, TA = -40°C to +125°C, no load | 2 |
| Reset Threshold (MAX6343S) | VTH | 2.89 | 2.93 | 2.97 | V | TA = +25°C | 2 |
| Reset Threshold (MAX6343S) | VTH | 2.85 |  | 3 | V | TA = -40°C to +85°C | 2 |
| Reset Threshold (MAX6343S) | VTH | 2.78 |  | 3.08 | V | TA = -40°C to +125°C | 2 |
| RESET Output Low Voltage | VOL |  |  | 0.4 | V | VCC > 1.2V, ISINK = 100µA | 2 |
| RESET Output Low Voltage | VOL |  |  | 0.3 | V | VCC > 2.7V, ISINK = 1.2mA | 2 |
| Reset Timeout Period | tRP | 100 | 180 | 280 | ms | TA = -40°C to +85°C | 3 |
| Reset Timeout Period | tRP | 80 |  | 360 | ms | TA = -40°C to +125°C | 3 |
| PFI Input Threshold |  | 1.2 | 1.25 | 1.3 | V | TA = -40°C to +85°C | 3 |
| PFI Input Threshold |  | 1.15 |  | 1.35 | V | TA = -40°C to +125°C | 3 |
| PFI Leakage Current |  | -25 | 0.01 | 25 | nA | TA = -40°C to +85°C | 3 |
| PFI Leakage Current |  | -100 |  | 100 | nA | TA = -85°C to +125°C | 3 |
| PFO Output Voltage High | VOH | 0.8 |  |  | x VCC | VCC = 4.5V, ISOURCE = 800µA | 3 |
| PFO Output Voltage Low | VOL |  |  | 0.4 | V | VCC = 4.5V, ISINK = 3.2mA | 3 |
| Open-Drain RESET Output Leakage Current | ILKG |  |  | 1 | µA | MAX6343 only, VCC > VTH(MAX) | 3 |
| MR Input Low | VIL |  |  | 0.3 | x VCC |  | 3 |
| MR Input High | VIH | 0.7 |  |  | x VCC |  | 3 |
| MR Minimum Pulse Width |  | 1 |  |  | µs |  | 3 |
| VCC to Reset Delay |  |  | 20 |  | µs | VCC = VTH to (VTH - 100mV) | 2 |
| MR Pull-Up Resistance |  |  | 60 |  | kΩ |  | 3 |
| MR to Reset Delay |  |  | 0.2 |  | µs |  | 3 |
| MR Glitch Rejection |  |  | 0.1 |  | µs |  | 3 |
| PFI to PFO Delay |  |  | 3 |  | µs | VOVERDRIVE = 15mV | 3 |
| PFO Short-Circuit Current |  |  | 5 |  | mA | Output source current | 3 |
| PFO Short-Circuit Current |  |  | 20 |  | mA | Output sink current | 3 |
| VCC to GND | VCC | -0.3 |  | 6 | V |  | 2 |
| RESET (MAX6343) | RESET | -0.3 |  | 6 | V |  | 2 |
| MR, PFI, PFO |  | -0.3 |  |  | V | upper limit (VCC + 0.3V) | 2 |
| Input Current, VCC |  |  |  | 50 | mA |  | 2 |
| Output Current, RESET, RESET |  |  |  | 50 | mA |  | 2 |
| Operating Temperature Range |  | -40 |  | 125 | °C |  | 2 |
| Junction Temperature |  |  |  | 150 | °C |  | 2 |
| Storage Temperature Range |  | -65 |  | 150 | °C |  | 2 |
| Lead Temperature Range |  |  |  | 300 | °C | soldering, 10s | 2 |

## CAD (KiCad official)

- Symbol: `MAX6343SUT+T`
- Footprint: `Package_TO_SOT_SMD:SOT-23-6`
- 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files: `max6343sut-t-etched.step` / `max6343sut-t-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `max6343sut-t.step` / `max6343sut-t.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [MAXIM INTEGRATED datasheet](https://www.analog.com/media/en/technical-documentation/data-sheets/max6342-max6345.pdf) (8 pp, sha256 `398afa582bc44220`, retrieved 2026-10-31, 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](docs/max6343sut-t-datasheet.pdf)