LTC6994MPS6-2#TRM

Overview

The LTC6994MPS6-2#TRM is a programmable delay block from the TimerBlox family, housed in a 6-lead 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 delay range from 1µs to 33.6 seconds, programmed via a single resistor (RSET) connected to the SET pin and a divider code selected via the DIV pin. The LTC6994-2 variant delays both rising and falling edges and allows 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 based on the specific sub-model configuration.
• Dynamic delay adjustment capability through a separate control voltage input for real-time timing modifications.
• Noise discrimination features that filter out short pulses or glitches by requiring input signals to remain stable for the programmed duration.
• Automotive qualification ensuring reliability and performance consistency under high vibration and acceleration conditions.

Applications

• Noise discriminators and pulse qualifiers for signal conditioning
• Switch debouncing in mechanical interface circuits
• Delay matching for synchronization in timing-critical systems

Procurement Notes

Verify the complete part number including the suffix #TRM to confirm tape and reel packaging specifications. Confirm the MPS6 grade corresponds to the required –55°C to 125°C industrial/automotive temperature range. Ensure compatibility with the target PCB footprint for the TSOT-23 package. Check for any specific automotive quality certifications if deploying in AEC-Q100 qualified applications.

Selection Notes

Select the LTC6994-2 variant when both rising and falling edge delays are required or when output inversion is necessary. Choose the MPS6 temperature grade for environments exceeding standard industrial limits. Use the TimerBlox design tool to calculate precise RSET and DIV resistor values for the desired delay range. Consider the 70µA idle current specification for battery-powered designs.

Part Context

This component belongs to the Analog Devices TimerBlox family of silicon timing devices, which includes oscillators, delay lines, and monostable multivibrators. The LTC6994 series specifically focuses on programmable delay blocks, offering versatility through external resistor programming. It complements other TimerBlox parts like the LTC6990 oscillator and LTC6993 monostable multivibrator within the same ecosystem.

Replacement Considerations

LTC6994IS6-2#TRMPBF: Industrial temperature grade (-40°C to 85°C). LTC6994HS6-2#TRMPBF: High temperature grade (-40°C to 125°C). Note that these variants have different specified operating temperature ranges compared to the MPS6 grade.