The TPS3305 family is a series of micropower supply voltage supervisors designed for circuit initialization, primarily in DSP and processor-based systems, which require two supply voltages: VCC and VDD. The TPS3305 family offers a variety of features, including a power-on reset generator, on-chip watchdog timer, and temperature-compensated voltage reference. The TPS3305 family is available in very small packages, making it ideal for space-constrained applications.
The TPS3305 family provides micropower supply voltage supervision for dual‑supply DSP and processor‑based systems. It monitors two independent supply voltages and includes a watchdog timer, manual reset, and both active‑low and active‑high reset outputs. Typical applications include automotive systems, portable equipment, and industrial controls.
Key features include a 200 ms power‑on reset delay, a 1.6 s watchdog timeout, selectable MSOP‑8 or SO‑8 packages, and operation over a –40 °C to 85 °C temperature range. Electrical specifications such as supply voltage range, current limits, and threshold voltages are detailed in the data sheet.
| Supply Voltage Range | 2.7 V to 6 V |
|---|---|
| Operating Temperature Range | -40°C to 85°C |
| Reset Assertion Threshold | Vpp > 1.1 V |
| Watchdog Timeout | 1.6 s |
| Package Types | MSOP‑8, SO‑8 |
The device operates with a supply voltage from 2.7 V to 6 V.
The watchdog timer times out after 1.6 seconds if not retriggered.
It is specified for –40 °C to 85 °C operation.
The device is offered in MSOP‑8 and standard 8‑pin SO packages.