TS861IN

Overview

The TS861IN is a single-channel, rail-to-rail micropower BiCMOS comparator manufactured by STMicroelectronics. It operates on a supply voltage range of 2.7V to 10V and features push-pull outputs. The device offers ultra-low current consumption of 6 µA per comparator at VCC = 2.7V. Key electrical specifications include a maximum input offset voltage of 7mV at 5V, a maximum propagation delay of 2µs, and an input bias current of 300pA at 5V. It provides high common-mode rejection ratio (CMRR) and power supply rejection ratio (PSRR) typical values of 70dB. The component is housed in an 8-DIP package with a pin spacing of 0.300 inches (7.62mm).

Feature Summary

• Rail-to-rail CMOS inputs allow operation across the full supply voltage range.
• Push-pull output stage eliminates the need for external pull-up resistors.
• Ultra-low current consumption ensures extended battery life in portable applications.
• Integrated ESD protection rated at 2kV and latch-up immunity.

Applications

• Battery-powered monitoring systems requiring low quiescent current.
• Threshold detection circuits in consumer electronics.
• Signal conditioning interfaces for microcontrollers.
• Temperature sensing and control loops.

Procurement Notes

Verify the specific ordering suffix to confirm the package type and tape-and-reel versus tube packaging configuration. Ensure the selected variant matches the required operating temperature range and lead finish specifications for your assembly process. Cross-reference the manufacturer part number with authorized distributors to confirm current availability status and compliance with RoHS directives.

Selection Notes

Select this component when a single comparator with rail-to-rail input capability is required in a through-hole DIP package. Consider the TS861 series variants if surface mount options like SOT-23-5 or SO-8 are preferred for automated assembly. Evaluate the 6µA current consumption against system power budgets and verify that the 2µs propagation delay meets the timing requirements of the target application circuit.

Part Context

The TS861 belongs to the TS861/TS862/TS864 family of micropower comparators from STMicroelectronics. This family includes single, dual, and quad channel versions sharing identical electrical characteristics but differing in package configurations and channel counts. The TS861 specifically denotes the single-channel version, offering a cost-effective solution for designs requiring only one comparison function without the complexity of multi-channel devices.

Replacement Considerations

Public confirmed substitute part numbers: TS861AIYLT, TS861AIN.