LTC6994MPS6-2#TRPBF

Overview

The LTC6994MPS6-2#TRPBF is a programmable delay block 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 –55°C to 125°C. The device provides a total delay range from 1µs to 33.6 seconds, determined by a master oscillator frequency set via an external resistor (RSET) and an internal clock divider (NDIV). The LTC6994-2 variant delays both rising and falling transitions and allows for output inversion. Key electrical parameters include a typical propagation delay of 10ns at 5.5V, a supply current as low as 70µA at 10µs delay, and a CMOS output driver capable of sourcing or sinking 20mA.

Feature Summary

• Configurable delay functionality allowing selection between delaying rising edges, falling edges, or both transitions simultaneously.
• Dynamic delay adjustment capability through a separate control voltage input for real-time timing modifications.
• Integrated noise discrimination features that filter out pulses shorter than the programmed delay duration.
• Single-resistor configuration for setting the time base, simplifying circuit design and component count.

Applications

• Noise discriminators and pulse qualifiers for signal conditioning
• Switch debouncing in mechanical interface circuits
• Delay matching applications requiring precise timing alignment

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when placing orders. Confirm the MPS6 designation corresponds to the required military-grade temperature range and automotive qualification status. Ensure compatibility with existing PCB footprints for the TSOT-23 package before finalizing procurement specifications.

Selection Notes

Select the LTC6994-2 variant specifically if simultaneous delay of both rising and falling edges is required. Choose this model over the -1 variant when output inversion options are necessary within the delay block. Consider the wide operating temperature range suitable for harsh environments compared to commercial grade alternatives.

Part Context

This component belongs to the Analog Devices TimerBlox family of versatile silicon timing devices. It serves as a specialized delay block designed for precision timing applications where standard oscillators or counters might be too complex or power-intensive. The part integrates analog timing generation with digital logic filtering capabilities.

Replacement Considerations

LTC6994IS6-2#TRMPBF

FAQ

How is the delay time programmed?

The delay time is programmed using a single external resistor connected between the SET pin and ground to set the master oscillator frequency, combined with an internal programmable divider selected via the DIV pin voltage.

What is the difference between the LTC6994-1 and LTC6994-2?

The LTC6994-1 delays either the rising or falling edge based on configuration, while the LTC6994-2 delays both transitions and includes an option to invert the output signal.

Can the delay be adjusted dynamically after startup?

Yes, the device allows dynamic adjustment of the delay time via a separate control voltage applied to the DIV pin, which changes the internal divider ratio.