TS3121 Series High-Speed, Low-Power Comparators

STMicroelectronics rail-to-rail, open-drain comparators are designed for industrial and automotive applications

Image of STMicroelectronics TS3121 Series High-Speed, Low-Power ComparatorsThe STMicroelectronics TS3121 series, including models TS3121ICT, TS3121ILT, TS3121AILT, TS3121AICT, TS3121IYLT, TS3121IYCT, TS3121AIYLT, and TS3121AIYCT, offers high-speed response times and low power consumption, making them ideal for a wide range of applications. These single comparators operate over a supply voltage range of 1.7 V to 5.5 V and a temperature range of -40°C to +125°C, ensuring reliable performance in harsh environments. The embedded fail-safe circuit allows the comparators to function with input/output pins biased even when the supply pin is shut down to 0 V, providing energy-saving benefits. With a guaranteed start-up time, these devices ensure stable output conditions after activating the supply rail. Their small package size makes them suitable for space-constrained applications, reducing overall PCB costs. The TS3121 series is AEC-Q100 qualified, making it suitable for automotive applications, and features high ESD tolerance, ensuring robust performance in various industrial settings.

Features
  • Low offset voltage: 2 mV max at +25°C (A-grade version)
  • Low power consumption: 70 μA typ.
  • Wide supply voltage range: 1.7 V 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 for stable output conditions
  • High ESD tolerance: 4 kV HBM
  • Extended temperature range: -40°C to +125°C
  • AEC-Q100 qualified
  • Safety capable with documentation for functional safety system design
  • Small package size for space-constrained applications
Applications
  • Industrial automation
  • Automotive systems
  • Power tools
  • Overcurrent protection
  • Controllers
  • Sensors
  • Energy-saving applications
  • Sequential on/off cycles of VCC
  • Space-constrained PCB designs
  • High-speed response applications
  • Low-power consumption devices
  • Harsh environment electronics
  • Functional safety systems
  • High ESD tolerance required applications
  • Wide temperature range applications

TS3121 Series High-Speed, Low-Power Comparators

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
RAIL-TO-RAIL, OPEN-DRAIN COMPARATS3121ICTRAIL-TO-RAIL, OPEN-DRAIN COMPARA2855 - Immediate$1.11View Details
RAIL-TO-RAIL, OPEN-DRAIN COMPARATS3121ILTRAIL-TO-RAIL, OPEN-DRAIN COMPARA2898 - Immediate$1.11View Details
RAIL-TO-RAIL, OPEN-DRAIN COMPARATS3121AILTRAIL-TO-RAIL, OPEN-DRAIN COMPARA3000 - Immediate$1.22View Details
RAIL-TO-RAIL, OPEN-DRAIN COMPARATS3121AICTRAIL-TO-RAIL, OPEN-DRAIN COMPARA2995 - Immediate$1.22View Details
RAIL-TO-RAIL, OPEN-DRAIN COMPARATS3121IYLTRAIL-TO-RAIL, OPEN-DRAIN COMPARA2992 - Immediate$1.31View Details
RAIL-TO-RAIL, OPEN-DRAIN COMPARATS3121IYCTRAIL-TO-RAIL, OPEN-DRAIN COMPARA3000 - Immediate$1.31View Details
RAIL-TO-RAIL, OPEN-DRAIN COMPARATS3121AIYLTRAIL-TO-RAIL, OPEN-DRAIN COMPARA5967 - Immediate$1.43View Details
RAIL-TO-RAIL, OPEN-DRAIN COMPARATS3121AIYCTRAIL-TO-RAIL, OPEN-DRAIN COMPARA3000 - Immediate$1.43View Details
Published: 2025-02-21