LTC6991HS6#WTRMPBF

Programmable Timers And Oscillators Overview

The LTC6991HS6#WTRMPBF 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 device operates on a single supply voltage between 2.25V and 5.5V with a typical supply current ranging from 55µA to 80µA depending on the clock period. Frequency accuracy is specified at ±1.5% maximum over temperature, with a frequency drift of ±0.005%/°C. It includes an output reset function and a CMOS driver capable of sourcing or sinking 20mA.

Programmable Timers And Oscillators Feature Summary

• Programmable period range from 1.024ms to 9.54 hours using a single resistor
• Eight internal frequency divider settings (NDIV) selectable via DIV pin voltage
• Output reset function allows truncation of pulses or prevention of oscillation
• CMOS output driver sources/sinks 20mA with configurable polarity

Programmable Timers And Oscillators Applications

• Heartbeat timers
• Watchdog timers
• Intervalometers
• Periodic wake-up calls
• Portable and battery-powered equipment

Programmable Timers And Oscillators Procurement Notes

Verify the automotive grade designation indicated by the #W suffix in the part number. Confirm the SOT-23 package type and tape and reel packaging format. Ensure the operating temperature range matches the specific application requirements for the H grade (-40°C to 125°C). Cross-reference the full part number with official Analog Devices documentation to confirm current production status.

Programmable Timers And Oscillators Selection Notes

Select this component when low-frequency oscillation up to several hours is required. Use the DIV pin resistor divider to set the desired frequency multiplier and output polarity. Choose RSET based on the target frequency, ensuring precision resistors are used for optimal accuracy. Consider the supply voltage range and current consumption trade-offs associated with different divider settings.

Programmable Timers And Oscillators Part Context

This part belongs to the LTC6991 TimerBlox family of silicon oscillators. The HS6#WTRMPBF designation indicates the H temperature grade (-40°C to 125°C), S6 TSOT-23 package, W automotive qualification, and TRMPBF mini tape and reel packaging. It shares core functionality with other variants differing primarily in temperature range and packaging.

Programmable Timers And Oscillators Replacement Considerations

Direct replacements within the same family include LTC6991IS6#WTRMPBF for industrial temperature range or LTC6991MPS6#WTRMPBF for extended military temperature range, provided the package and automotive requirements align.