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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.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 (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