LTC6905MPS5#TRPBF

Programmable Timers And Oscillators Overview

The LTC6905MPS5#TRPBF is a precision, programmable silicon oscillator housed in a 5-lead plastic SOT-23 (TSOT-23) package. It generates output frequencies from 17MHz to 170MHz using a single external resistor ($R_{SET}$) between 10kΩ and 25kΩ connected to the SET pin. The device operates on a single supply voltage ranging from 2.7V to 5.5V with a typical supply current of 6mA at 100MHz. An internal three-state divider allows frequency division by 1, 2, or 4 via the DIV pin. The component features a CMOS rail-to-rail output driver with a typical duty cycle of 50% ±2.5%. It is specified for an operating temperature range of –55°C to 125°C.

Programmable Timers And Oscillators Feature Summary

• Frequency Range: 17MHz to 170MHz set by a single resistor
• Temperature Grade: Extended industrial/military grade (-55°C to 125°C)
• Supply Voltage: Single 2.7V to 5.5V operation
• Output Driver: CMOS, rail-to-rail square wave

Programmable Timers And Oscillators Applications

• High speed data bus clock generation
• Fixed crystal oscillator replacement
• Ceramic oscillator replacement

Programmable Timers And Oscillators Procurement Notes

Verify that the specific part number corresponds to the lead-free finish variant ending in #TRPBF. Confirm the temperature grade suffix MPS5 indicates the -55°C to 125°C range. Ensure the ordering suffix matches the required tape and reel packaging format for surface mount assembly.

Programmable Timers And Oscillators Selection Notes

Select this model when an extended temperature range down to -55°C is required. Use the standard LTC6905IS5#TRPBF if only -40°C to 85°C coverage is needed. Calculate $R_{SET}$ using the provided formula based on the desired frequency and divider setting. Ensure stray capacitance on the SET pin remains below 10pF to maintain jitter specifications.

Programmable Timers And Oscillators Part Context

This component belongs to the LTC6905 family of resistor-set silicon oscillators. The MPS5 suffix specifically denotes the military/extended temperature grade version. Other variants include IS5 (-40°C to 85°C), CS5 (0°C to 70°C), and HS5 (-40°C to 125°C). The fixed-frequency versions are designated as LTC6905-XXX.

Programmable Timers And Oscillators Replacement Considerations

Public confirmed substitute part numbers are not available in the source material.