LTC6994HDCB-1#TRPBF

Overview

The LTC6994HDCB-1#TRPBF is a programmable delay block from the TimerBlox family, housed in a 6-lead (2mm x 3mm) plastic DFN package. It provides a delay range of 1µs to 33.6 seconds, configured via a single resistor and an internal clock divider with eight settings. The device operates on a single supply voltage between 2.25V and 5.5V, drawing 70µA at a 10µs delay. It features a CMOS output driver capable of sourcing and sinking 20mA. The specified operating temperature range for this grade is –40°C to 125°C.

Feature Summary

• Configurable delay functionality allowing selection of rising or falling edge transitions through the DIV pin logic setting.
• Dynamic adjustment capability enables real-time modification of delay duration using a separate control voltage input.
• Integrated noise discrimination acts as a pulse qualifier by ignoring input transitions that do not persist for the programmed delay period.

Applications

• Noise discriminators and pulse qualifiers for signal conditioning
• Switch debouncing in mechanical interface circuits
• Delay matching for timing synchronization

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when placing orders. Confirm the HDCB designation corresponds to the required DFN package and H-grade temperature rating. Ensure the -1 variant matches the intended single-edge delay requirement rather than the dual-edge -2 version.

Selection Notes

Select the LTC6994HDCB-1#TRPBF for applications requiring operation up to 125°C. Use the TimerBlox design tool to calculate precise RSET and DIV resistor values. Ensure the load capacitance remains below 5pF to maintain specified jitter and rise/fall time performance characteristics.

Part Context

This component belongs to the LTC6994 series within Analog Devices' TimerBlox portfolio. It shares architectural similarities with the LTC6992 and LTC6995 but is specifically optimized for programmable delay and debouncing functions rather than PWM generation or long-timer oscillation.

Replacement Considerations

The LTC6994HDCB-2#TRPBF serves as a functional substitute if both rising and falling edges require delay or if output inversion is needed. Other package variants such as IS6 or CS6 offer identical electrical performance in different physical footprints.