LTC6905CS5-80#TRPBF

Programmable Timers And Oscillators Overview

The LTC6905CS5-80#TRPBF is a fixed frequency silicon oscillator from Analog Devices, operating at master frequencies of 80MHz, 40MHz, and 20MHz. It features a CMOS output with a typical frequency accuracy of ±0.5% at 25°C and ±1.5% over the 0°C to 70°C specified range. The device operates on a single 2.7V to 5.5V supply, drawing 7mA to 11mA typically. It includes an output enable pin and a three-state divider for frequency selection, housed in a low-profile TSOT-23-5 package.

Programmable Timers And Oscillators Feature Summary

• Factory-programmed fixed frequencies: 80MHz (÷1), 40MHz (÷2), and 20MHz (÷4)
• High frequency accuracy: ±0.5% typical at 25°C; ±1.5% max over 0°C to 70°C
• Low temperature coefficient: ±20ppm/°C typical
• Fast start-up time: 100µs typical
• CMOS output drives loads up to 600Ω with <0.8% typical jitter

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 in space-constrained designs

Programmable Timers And Oscillators Procurement Notes

Verify the suffix #TRPBF indicates tape and reel packaging and lead-free compliance. Confirm the 'C' grade designation corresponds to the 0°C to 70°C specified temperature range. Ensure the ordering part number matches the specific 80MHz variant within the LTC6905-XXX family.

Programmable Timers And Oscillators Selection Notes

Select this component when a fixed frequency source is required without external trimming components. The LTC6905CS5-80 provides three selectable frequencies via the DIV pin. For wider temperature ranges, consider the IS5 (–40°C to 85°C) or HS5 (–40°C to 125°C) variants. Ensure power supply noise is minimized to maintain jitter specifications.

Programmable Timers And Oscillators Part Context

This part belongs to the LTC6905-XXX series of precision, fixed frequency silicon oscillators. Other members include the LTC6905-133, LTC6905-100, and LTC6905-96, which offer different master clock frequencies but share the same package, interface, and general electrical characteristics.

Programmable Timers And Oscillators Replacement Considerations

Direct replacements within the same family include LTC6905IS5-80#TRPBF for extended temperature range or LTC6905HS5-80#TRPBF for high-temperature operation. Cross-family replacements like the LTC6900 or LTC6906 require verification of frequency range and power consumption differences.