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Product Detailed Parameters
- Description：RAIL-TO-RAIL, OPEN-DRAIN COMPARA
- Series：*
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：-
- Number of Elements：-
- Output Type：-
- Voltage - Supply, Single/Dual (±)：-
- Voltage - Input Offset (Max)：-
- Current - Input Bias (Max)：-
- Current - Output (Typ)：-
- Current - Quiescent (Max)：-
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：-
- Hysteresis：-
- Operating Temperature：-
- Package / Case：-
- Mounting Type：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The TS3121AIYCT is a single rail-to-rail, open-drain comparator from STMicroelectronics. It operates over a supply voltage range of 1.7 to 5.5 V and an extended temperature range of -40 °C to +125 °C. The A-grade version features a maximum input offset voltage of 2 mV at 25 °C. Typical power consumption is 70 μA with a propagation delay of 60 ns. The device includes guaranteed start-up time and high ESD tolerance of 4 kV HBM.
Feature Summary
- Rail-to-rail input capability
- Open-drain output withstands voltages higher than VCC
- Guaranteed start-up time for stable output conditions
- High ESD tolerance of 4 kV HBM
Applications
- Industrial applications
- Automotive applications
- Power tools
- Overcurrent protection
- Controllers and sensors
Procurement Notes
Verify the specific ordering suffix against official documentation to confirm package type and grade. Ensure compatibility with system voltage requirements within the specified 1.7 to 5.5 V range. Confirm thermal management needs based on the application's ambient temperature constraints up to +125 °C.
Selection Notes
Select this component for designs requiring low power consumption alongside high-speed response. The A-grade variant offers superior offset voltage performance compared to standard versions. Consider the small package size for space-constrained PCB layouts. Verify if push-pull output or higher speed alternatives are needed for specific use cases.
Part Context
This part belongs to the TS3121 series of single comparators designed for high-speed and low-power applications. It is AEC-Q100 qualified for automotive environments. Related products include the TS880 for lower current, TS3011 for higher speed, and TS3021 for push-pull output configurations.
Replacement Considerations
TS3121ICT: Standard grade version with similar electrical characteristics but potentially higher offset voltage. TS3121P: Includes embedded Power-on Reset circuitry for known output conditions during startup.
