LTC6905IS5-80#TRMPBF

Programmable Timers And Oscillators Overview

The LTC6905IS5-80#TRMPBF is a precision, fixed-frequency silicon oscillator from Analog Devices Inc., housed in a 5-lead ThinSOT (TSOT-23) package. It operates on a single supply voltage ranging from 2.7V to 5.5V with a typical supply current of 11mA at 3.6V. The device provides three output frequencies: 80MHz, 40MHz, and 20MHz, selected via the DIV pin. Key electrical specifications include a typical frequency accuracy of ±0.5% at 25°C, a temperature stability of ±20ppm/°C, and a typical start-up time of 100µs. The CMOS output drives loads up to 600Ω with a rise/fall time of 0.5ns.

Programmable Timers And Oscillators Feature Summary

• Factory-programmed fixed frequencies: 80MHz (DIV=V+), 40MHz (DIV floating), and 20MHz (DIV=GND).
• High frequency accuracy: ±0.5% typical error at 25°C; ±2.9% maximum over the -40°C to 85°C range.
• Integrated Output Enable (OE) pin for synchronous enable/disable without pulse slivers.
• Low profile TSOT-23-5 package with typical power consumption of 11mA.

Programmable Timers And Oscillators Applications

• Data clocks for high reliability applications.
• Clock sources in high vibration or high acceleration environments.
• Replacement for fixed crystal and ceramic oscillators where board space is limited.

Programmable Timers And Oscillators Procurement Notes

Verify that the #TRMPBF suffix corresponds to the Tape and Reel packaging option as specified in the datasheet ordering information. Confirm the 'I' grade designation matches the required operating temperature range of -40°C to 85°C. Ensure the specific frequency variant (80MHz master) aligns with the design requirements before procurement.

Programmable Timers And Oscillators Selection Notes

Select this component when a compact, factory-trimmed oscillator is needed without external frequency-setting components. The IS5 variant is suitable for industrial temperature ranges (-40°C to 85°C). Consider the DIV pin configuration to determine if the default divide-by-1, 2, or 4 settings meet the system clock requirements, or if custom divider ratios are needed by contacting the manufacturer.

Programmable Timers And Oscillators Part Context

This part belongs to the LTC6905-XXX family of silicon oscillators, which includes variants like the LTC6905-133, LTC6905-100, and LTC6905-96. The 'IS5' indicates the Industrial temperature grade and TSOT-23-5 package. The '#TRMPBF' denotes the lead-free tape and reel packaging format compliant with RoHS standards.

Programmable Timers And Oscillators Replacement Considerations

Direct replacements within the same family include LTC6905IS5-100#TRMPBF (100MHz) or LTC6905IS5-96#TRMPBF (96MHz) if different frequencies are acceptable. For lower power needs, consider the LTC6900 series. Verify package compatibility (TSOT-23-5) and temperature ratings when substituting.