LTC6995HDCB-1

Programmable Timers And Oscillators Overview

The LTC6995HDCB-1 is a silicon oscillator from the TimerBlox family, designed for long duration timing events. It features a programmable period range of 1.024ms to 9.54 hours (29.1µHz to 977Hz). The internal master oscillator frequency is programmed via a single resistor, RSET, connected between the SET and GND pins. The output clock period is determined by this master oscillator and an internal frequency divider, NDIV, which offers eight settings from 1 to 2^21. The device generates a 50% duty cycle square wave output and includes a reset function to stop oscillation and clear dividers. It operates on a single supply voltage ranging from 2.25V to 5.5V.

Programmable Timers And Oscillators Feature Summary

• Programmable period range from 1.024ms to 9.54 hours using a single external resistor
• Internal frequency divider with eight selectable settings (NDIV = 1 to 2^21)
• Active-high reset input specific to the -1 version
• CMOS output driver capable of sourcing/sinking 20mA

Programmable Timers And Oscillators Applications

• Power-On Reset Timers
• Watchdog Timers
• Long Time One Shot circuits
• Periodic Wake-Up Call systems
• Heartbeat Timers

Programmable Timers And Oscillators Procurement Notes

Verify the ordering suffix #TRPBF indicates tape and reel packaging. Confirm the temperature grade H corresponds to the –40°C to 125°C operating range. Ensure the DCB package matches the required PCB footprint. Check current availability status as distribution may vary.

Programmable Timers And Oscillators Selection Notes

Select the LTC6995-1 variant when an active-high reset signal is required. Calculate RSET based on the desired output period and selected NDIV value. Use precision resistors for RSET to maintain frequency accuracy within specified limits. Ensure DIV pin voltage is set correctly to configure the divider ratio and output polarity.

Programmable Timers And Oscillators Part Context

This component belongs to the Analog Devices TimerBlox family of versatile silicon timing devices. The LTC6995 series is specifically engineered for low-frequency applications requiring long timing intervals. The -1 designation distinguishes it from the -2 version by its reset input polarity. It is available in DFN and SOT-23 packages.

Programmable Timers And Oscillators Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.