LTC6993HS6-2#WTRMPBF

Multivibrators Overview

The LTC6993HS6-2#WTRMPBF is a monostable multivibrator from the TimerBlox family, housed in a 6-lead Plastic TSOT-23 package. It operates on a single supply voltage ranging from 2.25V to 5.5V and supports an operating temperature range of –40°C to 125°C. The device generates programmable output pulses with widths between 1µs and 33.6 seconds, configured via a master oscillator resistor (RSET) and an internal clock divider (NDIV). It features rising-edge triggering with retrigger capability, CMOS output drivers sourcing and sinking up to 20mA, and low idle supply current.

Multivibrators Feature Summary

• Generates programmable output pulses ranging from 1µs to 33.6 seconds using a single external resistor for time base setting.
• Supports retriggerable operation where successive trigger signals extend the active pulse width indefinitely.
• Features a CMOS output driver capable of sourcing and sinking significant current for direct load driving.
• Includes a programmable frequency divider allowing selection of multiple timing multiples via the DIV pin voltage.

Multivibrators Applications

• Watchdog timer circuits requiring reliable timeout monitoring
• Missing pulse detection systems for signal integrity verification
• Envelope detection in modulated carrier signal processing

Multivibrators Procurement Notes

Verify the specific suffix #WTRMPBF indicates automotive-grade qualification and mini tape reel packaging. Confirm the HS6 designation corresponds to the high-temperature industrial grade (-40°C to 125°C) and the S6 package type. Ensure compatibility with AEC-Q100 requirements if used in automotive contexts. Check for any product change notifications affecting lead finish or manufacturing location.

Multivibrators Selection Notes

Select this variant for applications requiring retriggerable behavior triggered by rising edges. The HS6 grade ensures functionality across a wide temperature range suitable for harsh environments. Consider the NDIV settings available via the DIV pin to achieve precise pulse width requirements without excessive external component counts. Verify that the 20mA output drive capability meets the load requirements of the target circuit.

Multivibrators Part Context

This component belongs to the LTC6993 series of TimerBlox silicon timing devices. It shares architectural similarities with other variants differing primarily in trigger polarity and retriggerability. The HS6 package variant offers a compact surface-mount solution compared to larger DFN options, facilitating integration into space-constrained PCB designs while maintaining robust electrical performance.

Multivibrators Replacement Considerations

LTC6993HS6-1#WTRMPBF: Non-retriggerable version with identical package and temperature grade.

Multivibrators FAQ

How is the output pulse width programmed?

The pulse width is determined by the master oscillator frequency set by an external resistor (RSET) connected to the SET pin and an internal clock divider (NDIV) selected via the DIV pin voltage.

What is the difference between LTC6993-1 and LTC6993-2 regarding triggering?

Both respond to rising-edge triggers, but the LTC6993-2 is retriggerable, allowing the output pulse to be extended by subsequent triggers, whereas the LTC6993-1 ignores additional triggers until the current pulse completes.