STWD100NYWY3F
| Parameters | |
|---|---|
| Factory Lead Time | 1 Week |
| Lifecycle Status | ACTIVE (Last Updated: 7 months ago) |
| Contact Plating | Gold |
| Mount | Surface Mount |
| Mounting Type | Surface Mount |
| Package / Case | SC-74A, SOT-753 |
| Number of Pins | 5 |
| Weight | 29.993795mg |
| Operating Temperature | -40°C~125°C TA |
| Packaging | Cut Tape (CT) |
| Series | Automotive, AEC-Q100 |
| JESD-609 Code | e3 |
| Part Status | Active |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Number of Terminations | 5 |
| ECCN Code | EAR99 |
| Type | Watchdog Circuit |
| Terminal Finish | Tin (Sn) |
| Power Rating | 320mW |
| Max Power Dissipation | 320mW |
| Technology | CMOS |
| Terminal Position | DUAL |
| Terminal Form | GULL WING |
| Supply Voltage | 5V |
| Base Part Number | STWD100 |
| Output | Open Drain or Open Collector |
| Pin Count | 5 |
| Operating Supply Voltage | 5V |
| Number of Elements | 1 |
| Max Supply Voltage | 7V |
| Min Supply Voltage | -300mV |
| Nominal Supply Current | 13μA |
| Power Dissipation | 320mW |
| Output Current | 20μA |
| Watchdog Timer | Yes |
| Reset | Active Low |
| Reset Timeout | 1.12s Minimum |
| Ambient Temperature Range High | 125°C |
| Height | 1.45mm |
| Length | 2.9mm |
| Width | 1.6mm |
| Radiation Hardening | No |
| RoHS Status | ROHS3 Compliant |
| Lead Free | Lead Free |
Description
The self-contained STWD100NYWY3F watchdog timer circuits guard against system failures brought on by specific hardware flaws (such as non-responding peripherals and bus congestion) or software flaws (such as a bad code jump and a code stuck in a loop).
The watchdog timer STWD100NYWY3F has two outputs: WDO and WDI. Within the designated timeout period, twd, the input is utilized to regularly clear the internal watchdog timer. The watchdog input, WDI, is frequently toggled when the system is functioning properly. In the event of a system failure, a system alarm is generated, the watchdog output, WDO, is asserted, and the watchdog timer is not reset.
The watchdog capability of the STWD100NYWY3F circuit can also be enabled or disabled via the enable pin EN. The internal pull-down resistor is connected to the EN pin. If the EN pin is left floating, the device is enabled.
Features
Operating temperature range: –40 to 125 °C
Packages: SOT23-5 and SC70-5 (SOT323-5)
ESD performance
-HBM: 2000 V
-CDM: 1000 V
Automotive qualified
Current consumption 13 μA typ.
Available watchdog timeout periods are 3.4 ms, 6.3 ms, 102 ms, and 1.6 s
Chip enable input
Open drain or push-pull WDO output
Applications
Networking
Medical equipment
UPS (uninterruptible power supply)
Automotive
Telecommunications
Alarm systems
Industrial equipment
