LTC6994HDCB-2#TRPBF

Overview

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

Feature Summary

• Delays both rising and falling input transitions with optional output inversion
• Configurable delay time using one resistor and up to two additional resistors
• Dynamic adjustment capability via a separate control voltage
• Includes digital filtering to discriminate against noise and short pulses

Applications

• Noise discriminators and pulse qualifiers
• Switch debouncing circuits
• Delay matching applications
• Equipment operating in high vibration or high acceleration environments

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when placing orders. Confirm that the HDCB designation corresponds to the 6-lead DFN package variant required for your PCB layout. Ensure the H-grade temperature rating meets the environmental specifications of the target application before finalizing procurement.

Selection Notes

Select the LTC6994-2 variant specifically if the design requires delaying both signal edges or necessitates output inversion capabilities. Verify that the required delay range falls within the 1µs to 33.6 seconds limit. Consider the power supply voltage constraints and ensure the selected external resistors meet the tolerance requirements for the desired accuracy level.

Part Context

This component belongs to the Analog Devices TimerBlox family of silicon timing devices. It shares functional similarities with other members like the LTC6993 and LTC6995 but is distinct in its dual-edge delay and debouncing architecture. The DCB package offers a low-profile solution suitable for space-constrained portable designs.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Direct replacements must be sourced through official Analog Devices channels or verified equivalents with identical pinouts and electrical characteristics.