STMicroelectronics TS3121
TS3121 - Rail-to-rail, open-drain comparator with embedded fail-safe input/output
The TS3121 and the TS3121A single comparators permit high-speed response time at low power consumption over a supply voltage specified from 1.7 to 5.5 V. These devices operate over a wide temperature range from -40 °C to +125 °C making them ideal for industrial and automotive applications with the associated qualification.
Thanks to an embedded fail-safe circuit, the TS3121 and the TS3121A can operate with input/output pins biased while the supply pin is shut down to VCC = 0 V for energy saving applications. A guaranteed start-up time ensures a stable output condition after activating the supply rail.
Thanks to their small package size, the TS3121 and the TS3121A can be used in applications where space on the board is limited. It can thus reduce the overall cost of the PCB.
Features
- Low offset voltage: 2 mV max @ 25 °C (A-grade version)
- Low power consumption: 70 μA typ.
- Wide supply voltage: 1.7 to 5.5 V
- Propagation delay: 60 ns
- Rail-to-rail input
- Open-drain output
- Fail-safe input/output pins
- Input/output pins withstand voltages higher than VCC
- Fail-safe architecture keeps output in high impedance when VCC= 0 V
- Guaranteed start-up time allows sequential on/off cycles of VCC
- High ESD tolerance: 4 kV HBM
- Extended temperature range: -40 to +125 °C
- AEC-Q100 qualified
- Safety capable: documentation available to aid functional safety system design
Applications
- Industrial
- Automotive
- Power tools
- Overcurrent protection
- Controllers, sensors
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