LTC6994HS6-1#WTRMPBF

Overview

The LTC6994HS6-1#WTRMPBF is a programmable delay block from the TimerBlox family, housed in a 6-lead TSOT-23 package. It provides a delay range of 1µs to 33.6 seconds, configured via a single RSET resistor and an internal divider (NDIV) selectable from 8 settings. The device operates on a 2.25V to 5.5V supply with a typical idle current of 70µA at 10µs delay. It features a CMOS output driver capable of sourcing or sinking 20mA. The HS6-1 suffix indicates automotive qualification (AEC-Q100), a high temperature range (-40°C to 125°C), and mini-reel packaging.

Feature Summary

• Configurable edge-delay functionality for rising or falling transitions
• Dynamic delay adjustment capability via control voltage
• Automotive-grade reliability with AEC-Q100 qualification
• Low power consumption suitable for battery-operated systems

Applications

• Noise discriminators and pulse qualifiers
• Switch debouncing circuits
• Delay matching in signal paths
• Operation in high vibration or acceleration environments

Procurement Notes

Verify the specific ordering suffix #WTRMPBF confirms the automotive grade, extended temperature range, and mini-reel packaging format. Ensure the design requires the LTC6994-1 variant which delays only one transition type. Confirm that the TSOT-23 package dimensions fit the target PCB layout constraints.

Selection Notes

Select this component when a single-edge delay or noise filtering function is required within the 1µs to 33.6s range. The -1 suffix denotes the LTC6994-1 version, which delays either the rising or falling edge based on the POL bit, unlike the -2 version which delays both. Use the TimerBlox design tool to calculate precise RSET and DIV resistor values for the desired delay time.

Part Context

This part belongs to the Analog Devices TimerBlox family of silicon timing devices. It shares the core architecture with the LTC6994-2 but differs in output polarity handling. The HS6-1 designation specifies the high-temperature industrial/automotive grade and the specific surface-mount package configuration.

Replacement Considerations

Direct functional replacements include other parts within the LTC6994 family, such as the LTC6994HS6-2#WTRMPBF, noting the difference in edge-delay capabilities. Verify pin compatibility and electrical specifications before substituting.