LTC6994HS6-1#WTRPBF

Overview

The LTC6994HS6-1#WTRPBF is a programmable delay block from the TimerBlox family, manufactured by Analog Devices Inc. It operates on a single supply voltage ranging from 2.25V to 5.5V and is housed in a 6-lead Plastic TSOT-23 package. The device provides a programmable delay range from 1µs to 33.6 seconds, determined by an internal master oscillator frequency set by a single resistor (RSET) and a programmable clock divider (NDIV). It features a propagation delay of 10ns at 5.5V and supports an operating temperature range of -40°C to 125°C. The part is AEC-Q100 qualified for automotive applications.

Feature Summary

• Programmable delay block with a wide time base range from 1µs to 33.6 seconds
• Configured using a single external resistor for the master oscillator and voltage dividers for delay selection
• AEC-Q100 qualified for automotive reliability requirements
• CMOS output driver capable of sourcing and sinking up to 20mA

Applications

• Noise discriminators and pulse qualifiers
• Delay matching circuits
• Switch debouncing
• Portable and battery-powered equipment

Procurement Notes

Verify the specific suffix #WTRPBF indicates automotive grade qualification and tape and reel packaging. Confirm the HS6 designation corresponds to the high-temperature industrial range (-40°C to 125°C) and the S6 package type. Ensure compatibility with the intended PCB footprint for the 6-lead TSOT-23 housing before finalizing orders.

Selection Notes

Select this variant for applications requiring automotive qualification and extended temperature operation. The LTC6994-1 version delays only one edge (rising or falling), whereas the -2 version delays both. Choose based on whether output inversion is required, as only the -2 model supports it. Ensure the RSET resistor tolerance meets the desired delay accuracy specifications.

Part Context

This component belongs to the LTC6994 TimerBlox family, which includes variants like the LTC6994HS6-2#WTRPBF. The primary distinction between the -1 and -2 suffixes is the edge handling capability; the -1 model delays either rising or falling edges based on configuration, while the -2 model delays both transitions and allows for output inversion.

Replacement Considerations

LTC6994HS6-2#WTRPBF