The SGM819SxQ is an independent watchdog timer circuit. It can be used to guard against system failures due to hardware types like peripherals errors and bus occupancy or software types like infinite code execution in a loop.
This device has a WDI input and an nWDO output. In normal conditions, the WDI is toggled within the preset timeout period called tWD in order to clear the watchdog timer. However, if an error event occurs and the watchdog timer is not reset within tWD, the nWDO is asserted to send out the alarm signal.
The SGM819SxQ has an enable pin (nEN) to control the device to turn on/off the watchdog function. To turn on the watchdog function, just connect nEN pin which has a built-in pull-down resistor to GND or leave it floating.
The device is AEC-Q100 qualified (Automotive Electronics Council (AEC) standard Q100 Grade 1) and it is suitable for automotive applications.
The SGM819SxQ is available in a Green SOT-23-5 package. It operates over the junction temperature range of -40℃ to +125℃.
- AEC-Q100 Qualified for Automotive Applications
Device Temperature Grade 1
TA = -40℃ to +125℃ - Current Consumption: 3.5μA (TYP)
- Six Selectable Watchdog Timeout Periods: 3.4ms, 6.8ms, 108.8ms, 1.7s, 7.0s and 27.9s
- Two Selectable Watchdog Active Time: 27.2ms and 217.6ms
- Watchdog Timer Accuracy: ±20%
- Active-Low Enable Input
- Open-Drain nWDO Output
- Available in a Green SOT-23-5 Package
Automotive Applications
Industrial Equipment
Telecommunications
Safety Applications
Networking
Medical Equipment
UPS System
Part Number | Status | Package | Pins | Pd-Free | RoHS | REACH | Green | MSL Rating | Operating Temperature Range | Material Content | Reliability Report | Unit Resale Price* (Volume Range: in USD) | Lead Time** (Volume Range: Days) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SGM819S-AQN5G/TR | Active | SOT-23-5 | 5 | YES | YES | YES | YES | MSL1 | -40℃ to +125℃ | View | View | 1-24 units : $1.75/unit 25-99 units : $1.5/unit 100-249 units : $1.25/unit 250-499 units : $1/unit 500-999 units : $0.875/unit 1000-9999 units : $0.65/unit | 3K-9K : 14 days 10K-99K : 35 days 100K-999K : 70 days 1000K and above : 91 days | |
SGM819S-BAQN5G/TR | Active | SOT-23-5 | 5 | YES | YES | YES | YES | MSL1 | -40℃ to +125℃ | View | View | 1-24 units : $1.75/unit 25-99 units : $1.5/unit 100-249 units : $1.25/unit 250-499 units : $1/unit 500-999 units : $0.875/unit 1000-9999 units : $0.65/unit | 3K-9K : 14 days 10K-99K : 35 days 100K-999K : 70 days 1000K and above : 91 days | |
SGM819S-BBQN5G/TR | Active | SOT-23-5 | 5 | YES | YES | YES | YES | MSL1 | -40℃ to +125℃ | View | View | 1-24 units : $1.75/unit 25-99 units : $1.5/unit 100-249 units : $1.25/unit 250-499 units : $1/unit 500-999 units : $0.875/unit 1000-9999 units : $0.65/unit | 3K-9K : 14 days 10K-99K : 35 days 100K-999K : 70 days 1000K and above : 91 days | |
SGM819S-CAQN5G/TR | Active | SOT-23-5 | 5 | YES | YES | YES | YES | MSL1 | -40℃ to +125℃ | View | View | 1-24 units : $1.75/unit 25-99 units : $1.5/unit 100-249 units : $1.25/unit 250-499 units : $1/unit 500-999 units : $0.875/unit 1000-9999 units : $0.65/unit | 3K-9K : 14 days 10K-99K : 35 days 100K-999K : 70 days 1000K and above : 91 days | |
SGM819S-CBQN5G/TR | Active | SOT-23-5 | 5 | YES | YES | YES | YES | MSL1 | -40℃ to +125℃ | View | View | 1-24 units : $1.75/unit 25-99 units : $1.5/unit 100-249 units : $1.25/unit 250-499 units : $1/unit 500-999 units : $0.875/unit 1000-9999 units : $0.65/unit | 3K-9K : 14 days 10K-99K : 35 days 100K-999K : 70 days 1000K and above : 91 days | |
SGM819S-DAQN5G/TR | Active | SOT-23-5 | 5 | YES | YES | YES | YES | MSL1 | -40℃ to +125℃ | View | View | 1-24 units : $1.75/unit 25-99 units : $1.5/unit 100-249 units : $1.25/unit 250-499 units : $1/unit 500-999 units : $0.875/unit 1000-9999 units : $0.65/unit | 3K-9K : 14 days 10K-99K : 35 days 100K-999K : 70 days 1000K and above : 91 days | |
SGM819S-DBQN5G/TR | Active | SOT-23-5 | 5 | YES | YES | YES | YES | MSL1 | -40℃ to +125℃ | View | View | 1-24 units : $1.75/unit 25-99 units : $1.5/unit 100-249 units : $1.25/unit 250-499 units : $1/unit 500-999 units : $0.875/unit 1000-9999 units : $0.65/unit | 3K-9K : 14 days 10K-99K : 35 days 100K-999K : 70 days 1000K and above : 91 days | |
SGM819S-EAQN5G/TR | Active | SOT-23-5 | 5 | YES | YES | YES | YES | MSL1 | -40℃ to +125℃ | View | View | 1-24 units : $1.75/unit 25-99 units : $1.5/unit 100-249 units : $1.25/unit 250-499 units : $1/unit 500-999 units : $0.875/unit 1000-9999 units : $0.65/unit | 3K-9K : 14 days 10K-99K : 35 days 100K-999K : 70 days 1000K and above : 91 days | |
SGM819S-EBQN5G/TR | Active | SOT-23-5 | 5 | YES | YES | YES | YES | MSL1 | -40℃ to +125℃ | View | View | 1-24 units : $1.75/unit 25-99 units : $1.5/unit 100-249 units : $1.25/unit 250-499 units : $1/unit 500-999 units : $0.875/unit 1000-9999 units : $0.65/unit | 3K-9K : 14 days 10K-99K : 35 days 100K-999K : 70 days 1000K and above : 91 days | |
SGM819S-FAQN5G/TR | Active | SOT-23-5 | 5 | YES | YES | YES | YES | MSL1 | -40℃ to +125℃ | View | View | 1-24 units : $1.75/unit 25-99 units : $1.5/unit 100-249 units : $1.25/unit 250-499 units : $1/unit 500-999 units : $0.875/unit 1000-9999 units : $0.65/unit | 3K-9K : 14 days 10K-99K : 35 days 100K-999K : 70 days 1000K and above : 91 days | |
SGM819S-FBQN5G/TR | Active | SOT-23-5 | 5 | YES | YES | YES | YES | MSL1 | -40℃ to +125℃ | View | View | 1-24 units : $1.75/unit 25-99 units : $1.5/unit 100-249 units : $1.25/unit 250-499 units : $1/unit 500-999 units : $0.875/unit 1000-9999 units : $0.65/unit | 3K-9K : 14 days 10K-99K : 35 days 100K-999K : 70 days 1000K and above : 91 days |
* The unit resale price is for reference purposes only. Please contact our distributors for a formal quotation.
** The lead time provided is for reference purposes only and is subject to change based on different circumstances.
