LTC6905HS5-80#TRMPBF

Programmable Timers And Oscillators Overview

The LTC6905HS5-80#TRMPBF is a fixed frequency silicon oscillator from Analog Devices, operating within the -40°C to 125°C temperature range. It provides three selectable output frequencies: 80MHz (÷1), 40MHz (÷2), and 20MHz (÷4). The device features a typical frequency accuracy of ±0.5% at 25°C and ±2.9% over the full specified temperature range. It operates on a single supply voltage between 2.7V and 5.5V, with a typical power supply current of 8mA at 3.6V for the ÷1 setting. The CMOS output drives loads up to 600Ω with a typical rise time of 0.5ns.

Programmable Timers And Oscillators Feature Summary

• Factory-programmed fixed frequencies: 80MHz, 40MHz, and 20MHz via internal divider settings.
• High frequency accuracy: ±0.5% typical at 25°C; ±2.9% maximum over -40°C to 125°C.
• Low profile 5-lead ThinSOT (TSOT-23) package with 1mm height.
• Includes Output Enable (OE) pin for synchronous enable/disable without pulse slivers.

Programmable Timers And Oscillators Applications

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

Programmable Timers And Oscillators Procurement Notes

Verify the ordering suffix #TRMPBF indicates tape and reel packaging with lead-free finish. Confirm the 'H' grade designation corresponds to the extended industrial temperature range (-40°C to 125°C). Ensure the specific part number matches the required 80MHz master frequency configuration.

Programmable Timers And Oscillators Selection Notes

Select this model when a fixed 80MHz/40MHz/20MHz output is required in an automotive or harsh environment. The HS5 variant is necessary for temperatures exceeding 85°C. Compare against resistor-set variants (LTC6905IS5) if programmable frequency is needed instead of factory-fixed options.

Programmable Timers And Oscillators Part Context

This component belongs to the LTC6905-XXX series of precision silicon oscillators. The '80' suffix denotes the 80MHz master clock frequency. The 'H' indicates the high-temperature grade, while 'S5' specifies the TSOT-23-5 package. This series replaces traditional discrete crystal oscillators to minimize footprint.

Programmable Timers And Oscillators Replacement Considerations

Direct replacements include other grades of the same frequency: LTC6905CS5-80#TRMPBF (Commercial, 0°C to 70°C) and LTC6905IS5-80#TRMPBF (Industrial, -40°C to 85°C). For higher frequencies, consider LTC6905HS5-96#TRMPBF (96MHz) or LTC6905HS5-100#TRMPBF (100MHz).