LTC6994IS6-1#TRMPBF

Overview

The LTC6994IS6-1#TRMPBF 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 resistor (RSET) and an internal divider (NDIV). Operating on a single supply of 2.25V to 5.5V, it draws 70µA at 10µs delay. The device features a CMOS output driver capable of sourcing/sinking 20mA. It operates within a temperature range of -40°C to +85°C and includes noise discrimination capabilities.

Feature Summary

• Configurable delay functionality allowing selection of rising or falling edge delays via the DIV pin polarity setting.
• Dynamic delay adjustment capability through a separate control voltage input on the SET pin.
• Noise discriminator function that filters short pulses by requiring the input signal to remain stable for the programmed duration.
• Single-resistor programming architecture simplifies circuit design while maintaining high accuracy across the delay range.

Applications

• Switch debouncing in mechanical interface circuits
• Pulse qualification and noise filtering for noisy digital signals
• Delay matching between multiple signal paths
• Timing elements in portable and battery-powered equipment

Procurement Notes

Verify the specific suffix #TRMPBF indicates tape and reel mini packaging with 500 units per reel. Confirm the IS6 designation corresponds to the industrial temperature grade (-40°C to +85°C) and TSOT-23 package. Ensure compatibility with automotive requirements if applicable, as standard versions differ from AEC-Q100 qualified parts marked with #W suffixes.

Selection Notes

Select this part when a wide delay range up to 33.6 seconds is required in a small footprint. Choose the -1 variant if only one edge (rising or falling) needs delaying. Ensure the application supply voltage stays within 2.25V to 5.5V. For higher precision, use low-tolerance resistors for RSET and DIV settings to minimize drift errors.

Part Context

This component belongs to the Analog Devices TimerBlox family of silicon timing devices. It shares architectural similarities with other TimerBlox parts like the LTC6992 and LTC6993 but offers unique programmable delay line functionality rather than just oscillators or monostables. It is designed for applications requiring precise, adjustable timing intervals without external microcontrollers.

Replacement Considerations

Direct functional replacements include other LTC6994 variants such as LTC6994CS6-1#TRMPBF (commercial temp) or LTC6994HS6-1#TRMPBF (high temp), provided temperature ranges match. Cross-family alternatives like LTC6992 require reconfiguration of timing components due to different delay mechanisms.