LTC6905HS5#TRMPBF

Programmable Timers And Oscillators Overview

The LTC6905HS5#TRMPBF is a precision, programmable silicon oscillator housed in a 5-lead plastic SOT-23 package. It generates frequencies from 17MHz to 170MHz using a single external resistor (RSET) between 10kΩ and 25kΩ. The device operates on a single 2.7V to 5.5V supply with a typical supply current of 6mA at 100MHz. A three-state DIV input allows frequency division by 1, 2, or 4. Key electrical characteristics include a typical frequency accuracy of ±0.5% at 25°C, temperature stability of ±20ppm/°C, and a timing jitter of 7.2ps RMS at 170MHz. The output provides a rail-to-rail CMOS square wave with a 50% duty cycle.

Programmable Timers And Oscillators Feature Summary

• Frequency range of 17MHz to 170MHz set by a single resistor
• Typical frequency accuracy of ±0.5% over the full operating temperature range (-40°C to 125°C)
• Low profile 1mm ThinSOT™ (TSOT-23) package
• Programmable divider for ÷1, ÷2, or ÷4 output scaling

Programmable Timers And Oscillators Applications

• High frequency precision oscillator circuits
• Clock generation for high-speed data buses
• Replacement for fixed crystal oscillators
• Replacement for ceramic oscillators

Programmable Timers And Oscillators Procurement Notes

Verify that the HS5 suffix corresponds to the -40°C to 125°C industrial/high-temp grade and the TRMPBF suffix indicates Mini Tape & Reel packaging with lead-free finish. Confirm the specific lot marking LTBJC matches the datasheet requirements for this variant.

Programmable Timers And Oscillators Selection Notes

Select the HS5 grade when operation outside the commercial range (0°C to 70°C) is required, specifically for temperatures down to -40°C. Ensure RSET values remain within 10kΩ to 25kΩ to maintain optimal performance. Consider the DIV pin configuration to achieve the desired frequency range, as higher divide ratios reduce jitter but increase supply current.

Programmable Timers And Oscillators Part Context

This component belongs to the LTC6905 series of resistor-set silicon oscillators. The HS5 variant specifically denotes the extended temperature range version (-40°C to 125°C). It serves as a compact alternative to traditional crystal or ceramic oscillators, offering programmability via a single resistor while maintaining high precision in a minimal footprint.

Programmable Timers And Oscillators Replacement Considerations

Direct functional replacements within the same family include the LTC6905IS5#TRMPBF for the -40°C to 85°C range and the LTC6905MPS5#TRMPBF for the -55°C to 125°C range. Fixed-frequency versions like the LTC6905-XXX series are suitable if no external resistor is desired.