component
PT7A7514WEX
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Diodes Incorporated Supervisor And Reset ICs, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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PT7A7514WEX
Diodes Incorporated · Supervisor And Reset ICs · SOIC-8
PT7A7514WEX from Diodes Incorporated, in a SOIC-8. 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 | MR | input | Manual-reset input that triggers an active-low reset pulse when pulled below 0.8V, has an internal 250µA pull-up, and can be driven from TTL/CMOS logic or shorted to ground with a switch. |
| 2 | VCC | power_in | Supply voltage; for the 75x4 parts (PT7A7514) the recommended supply range is 3.0V to 5.5V. |
| 3 | GND | power_in | Ground reference for all signals. |
| 4 | PFI | input | Power-fail voltage monitor input whose 1.25V threshold drives PFO low when PFI falls below it; connect to GND or VCC when not used. |
| 5 | PFO | output | Power-fail output that gets low and sinks current when PFI is below 1.25V, otherwise it stays high. |
| 6 | WDI | input | Watchdog input: if WDI stays high or low for 1.6s the watchdog times out and WDO goes low; floating WDI or a high-impedance three-state driver disables the watchdog, and WDI must be pulsed at least 150ns (tWP) to service it. |
| 7 | RESET | output | Active-low reset output that pulses low for 200ms when triggered and stays low whenever VCC is below the reset threshold (2.93V nominal for PT7A7514). |
| 8 | WDO | output | Watchdog output that pulls low when the 1.6s watchdog count finishes and also during low-line conditions, and does not go high again until the watchdog is cleared. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
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 Current (ICC) 75x3/x4 | ICC | 30 | 200 | µA | 75x3/x4 Vcc = 3.3V, Left WDI unconnected (No output load) | 4 | |
| Reset Threshold Voltage (75x4) | VRST | 2.886 | 2.93 | 2.974 | V | TA= 25ºC, 75x4 | 4 |
| Reset Threshold Voltage (hysteresis) | VRTH+ | 70 | mV | VCC varies between VRN - 5% | 4 | ||
| Output Low Voltage | VOL | 0.4 | V | Vcc 4.5V, Isink=3.2mA | 4 | ||
| Output Low Voltage | VOL | 0.3 | V | Vcc 2.7V, Isink=1.2mA | 4 | ||
| PFI Input Threshold | VPFT | 1.23 | 1.25 | 1.27 | V | VPFI varies from 1.0V to 1.5V | 5 |
| PFI Input Threshold | VPFT | 1.2 | 1.25 | 1.3 | V | VPFI varies from 0V to 1.0V | 5 |
| PFI Input Current (PFI connected to Vcc) | IPFI | 2 | µA | PFI connected to Vcc | 5 | ||
| PFI Input Current (PFI connected to GND) | IPFI | -2 | µA | PFI connected to GND | 5 | ||
| Average WDI Input Current (WDI connected to VCC) | IWDI | 30 | 100 | µA | WDI connected to VCC | 5 | |
| Average WDI Input Current (WDI connected to GND) | IWDI | -100 | -30 | µA | WDI connected to GND | 5 | |
| MR Input Current | IMR | -600 | -250 | -100 | µA | MR=0, Vcc = 5V | 5 |
| Reset Pulse Width | tRS | 160 | 200 | 280 | ms | MR from low to High, TA=25℃ | 5 |
| Watchdog Timeout Period | tWD | 1.2 | 1.6 | 2.25 | s | WDI, MR tied to Vcc, Vcc>VRN+5% , TA=25℃ | 5 |
| MR Pulse Width | tMR | 200 | ns | 5 | |||
| MR to RESET Delay | tMD | 250 | ns | Vcc=5V | 5 | ||
| WDI Pulse Width | tWP | 150 | ns | 5 | |||
| Supply Voltage (75x3,75x4) | VCC | 3 | 3.3 | 5.5 | V | Supply Voltage for 75x3,75x4 | 4 |
| MR Input High Voltage | VIH1 | 2 | 2.4 | V | VCC > 4.0V | 4 | |
| MR Input Low Voltage | VIL1 | 0.8 | V | VCC > 4.0V | 4 | ||
| Operating Temperature | TA | -40 | 85 | ℃ | 4 | ||
| Supply Voltage to Ground Potential (Vcc to GND) | -0.3 | 7 | V | 4 | |||
| DC Input Voltage (all inputs except Vcc and GND) | -0.3 | V | Maximum printed as VCC+0.3V (formula, not numeric) | 4 | |||
| Power Dissipation | 500 | mW | Depend on package | 4 | |||
| Storage Temperature | -65 | 150 | oC | 4 | |||
| Ambient Temperature with Power Applied | -40 | 85 | oC | 4 |
CAD (KiCad official)
- Symbol:
PT7A7514WEX - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
pt7a7514wex-etched.step/pt7a7514wex-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);pt7a7514wex.step/pt7a7514wex.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (11 pp, sha256
6650c5ab273b7852, retrieved 2026-10-19, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).
# PT7A7514WEX
**Diodes Incorporated** · Supervisor And Reset ICs · SOIC-8
PT7A7514WEX from Diodes Incorporated, in a SOIC-8. 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 | MR | input | Manual-reset input that triggers an active-low reset pulse when pulled below 0.8V, has an internal 250µA pull-up, and can be driven from TTL/CMOS logic or shorted to ground with a switch. |
| 2 | VCC | power_in | Supply voltage; for the 75x4 parts (PT7A7514) the recommended supply range is 3.0V to 5.5V. |
| 3 | GND | power_in | Ground reference for all signals. |
| 4 | PFI | input | Power-fail voltage monitor input whose 1.25V threshold drives PFO low when PFI falls below it; connect to GND or VCC when not used. |
| 5 | PFO | output | Power-fail output that gets low and sinks current when PFI is below 1.25V, otherwise it stays high. |
| 6 | WDI | input | Watchdog input: if WDI stays high or low for 1.6s the watchdog times out and WDO goes low; floating WDI or a high-impedance three-state driver disables the watchdog, and WDI must be pulsed at least 150ns (tWP) to service it. |
| 7 | RESET | output | Active-low reset output that pulses low for 200ms when triggered and stays low whenever VCC is below the reset threshold (2.93V nominal for PT7A7514). |
| 8 | WDO | output | Watchdog output that pulls low when the 1.6s watchdog count finishes and also during low-line conditions, and does not go high again until the watchdog is cleared. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOIC-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
## 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 Current (ICC) 75x3/x4 | ICC | | 30 | 200 | µA | 75x3/x4 Vcc = 3.3V, Left WDI unconnected (No output load) | 4 |
| Reset Threshold Voltage (75x4) | VRST | 2.886 | 2.93 | 2.974 | V | TA= 25ºC, 75x4 | 4 |
| Reset Threshold Voltage (hysteresis) | VRTH+ | | 70 | | mV | VCC varies between VRN - 5% | 4 |
| Output Low Voltage | VOL | | | 0.4 | V | Vcc 4.5V, Isink=3.2mA | 4 |
| Output Low Voltage | VOL | | | 0.3 | V | Vcc 2.7V, Isink=1.2mA | 4 |
| PFI Input Threshold | VPFT | 1.23 | 1.25 | 1.27 | V | VPFI varies from 1.0V to 1.5V | 5 |
| PFI Input Threshold | VPFT | 1.2 | 1.25 | 1.3 | V | VPFI varies from 0V to 1.0V | 5 |
| PFI Input Current (PFI connected to Vcc) | IPFI | | | 2 | µA | PFI connected to Vcc | 5 |
| PFI Input Current (PFI connected to GND) | IPFI | -2 | | | µA | PFI connected to GND | 5 |
| Average WDI Input Current (WDI connected to VCC) | IWDI | | 30 | 100 | µA | WDI connected to VCC | 5 |
| Average WDI Input Current (WDI connected to GND) | IWDI | -100 | -30 | | µA | WDI connected to GND | 5 |
| MR Input Current | IMR | -600 | -250 | -100 | µA | MR=0, Vcc = 5V | 5 |
| Reset Pulse Width | tRS | 160 | 200 | 280 | ms | MR from low to High, TA=25℃ | 5 |
| Watchdog Timeout Period | tWD | 1.2 | 1.6 | 2.25 | s | WDI, MR tied to Vcc, Vcc>VRN+5% , TA=25℃ | 5 |
| MR Pulse Width | tMR | 200 | | | ns | | 5 |
| MR to RESET Delay | tMD | | | 250 | ns | Vcc=5V | 5 |
| WDI Pulse Width | tWP | 150 | | | ns | | 5 |
| Supply Voltage (75x3,75x4) | VCC | 3 | 3.3 | 5.5 | V | Supply Voltage for 75x3,75x4 | 4 |
| MR Input High Voltage | VIH1 | 2 | 2.4 | | V | VCC > 4.0V | 4 |
| MR Input Low Voltage | VIL1 | | | 0.8 | V | VCC > 4.0V | 4 |
| Operating Temperature | TA | -40 | | 85 | ℃ | | 4 |
| Supply Voltage to Ground Potential (Vcc to GND) | | -0.3 | | 7 | V | | 4 |
| DC Input Voltage (all inputs except Vcc and GND) | | -0.3 | | | V | Maximum printed as VCC+0.3V (formula, not numeric) | 4 |
| Power Dissipation | | | | 500 | mW | Depend on package | 4 |
| Storage Temperature | | -65 | | 150 | oC | | 4 |
| Ambient Temperature with Power Applied | | -40 | | 85 | oC | | 4 |
## CAD (KiCad official)
- Symbol: `PT7A7514WEX`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files: `pt7a7514wex-etched.step` / `pt7a7514wex-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `pt7a7514wex.step` / `pt7a7514wex.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Diodes Incorporated datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590269078557253632) (11 pp, sha256 `6650c5ab273b7852`, retrieved 2026-10-19, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-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/pt7a7514wex-datasheet.pdf)