Analog Devices Inc. LTC6993HS6-2#TRMPBF

Overview

LTC6993HS6-2#TRMPBF from Analog Devices is a retriggerable rising-edge monostable multivibrator (one-shot) IC with programmable pulse width from 1µs to 33.6 seconds, 2.25V–5.5V single-supply operation, and CMOS output sourcing/sinking 20mA. It uses an internal master oscillator and 8-step programmable divider (NDIV = 1 to 2²¹) set via RSET and DIV pin voltage, targeting precision timing in automotive and industrial systems.

For engineers reviewing the LTC6993HS6-2#TRMPBF datasheet, LTC6993HS6-2#TRMPBF pinout, LTC6993HS6-2#TRMPBF application, or LTC6993HS6-2#TRMPBF equivalent, key selection criteria include retrigger capability, ±2.3% pulse width accuracy over temperature, –40°C to 125°C operating range, SOT-23-6 package, and dynamic pulse width adjustment via control voltage on SET pin.

Technical Context

The LTC6993HS6-2#TRMPBF implements a digitally controlled analog timing architecture: a current-regulated master oscillator (t_MASTER = 1µs × R_SET/50kΩ) feeds an 8-ratio programmable divider (NDIV), producing t_OUT = NDIV × t_MASTER. Its TRIG input features hysteresis (V_TRIG(RISING) ≈ 0.55×V+ + 185mV) and supports retriggering with minimum inter-trigger interval of 10ns at V+ = 3.3V for NDIV = 1.

Timing accuracy is maintained by a regulated 1.00V SET pin reference (±30mV, ±75µV/°C drift), enabling R_SET-based programming independent of supply variation. The DIV pin uses a V+-referenced 4-bit ADC to decode resistor-divider voltage into both NDIV and output polarity (POL bit), with ±1.5% V_DIV/V+ tolerance requirement.

Key Specifications

Pinout & Package

Package: 6-Lead Plastic TSOT-23 (S6), 1mm profile, lead-free finish, exposed pad optional.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar monostable timing applications.

Compared with LTC6993IS6-2#TRMPBF, the LTC6993HS6-2#TRMPBF provides guaranteed operation up to 125°C - essential for engine bay or powertrain applications - while the LTC6993HS6-2#WTRMPBF adds automotive-specific quality controls without altering electrical behavior.

Availability

LTC6993HS6-2#TRMPBF is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor protection systems, and battery-powered IoT sensor nodes requiring stable component supply across extended temperature ranges.

Supply support for LTC6993HS6-2#TRMPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The TimerBlox family - including LTC6993HS6-2#TRMPBF - was designed to replace discrete RC timers and 555-based circuits with highly accurate, temperature-stable, programmable silicon timing solutions for space-constrained and reliability-critical applications.

FAQ

What is the maximum pulse width achievable with LTC6993HS6-2#TRMPBF?

The LTC6993HS6-2#TRMPBF supports a maximum output pulse width of 33.6 seconds. This is achieved when NDIV is set to 2²¹ (2,097,152) and R_SET = 800kΩ, per the equation t_OUT = NDIV × R_SET / 50kΩ × 1µs. The device maintains ±4.9% accuracy at the 1µs–8µs range and ±2.3% for widths above 512µs, verified across its –40°C to 125°C operating range.

How does the retrigger function work on LTC6993HS6-2#TRMPBF?

The LTC6993HS6-2#TRMPBF is a rising-edge retriggerable monostable: each rising edge on the TRIG pin restarts the output pulse timer, extending the active duration. For NDIV = 1, successive triggers must be spaced ≥10ns apart at V+ = 3.3V to be recognized; for NDIV > 1, minimum spacing is 50ns. This behavior enables dynamic pulse stretching in envelope detection and adaptive timeout applications without external logic.

Can LTC6993HS6-2#TRMPBF generate negative output pulses?

Yes, the LTC6993HS6-2#TRMPBF can generate negative output pulses by configuring the DIV pin voltage to select a DIVCODE with POL = 1 (e.g., DIVCODE = 8–15). When POL = 1, the OUT pin transitions from V+ to GND for the programmed pulse duration. This polarity inversion is implemented entirely within the IC and requires no external components, simplifying designs needing active-low timing signals.

What is the recommended R_SET resistor tolerance for precision timing with LTC6993HS6-2#TRMPBF?

For precision timing applications, Analog Devices recommends using a 0.5% or better tolerance metal or thin-film resistor with ≤50ppm/°C temperature coefficient for R_SET. While 1% thick-film resistors are acceptable for lower-accuracy uses, the ±0.5% tolerance directly contributes to pulse width accuracy alongside the LTC6993HS6-2#TRMPBF's inherent ±2.3% error budget for t_OUT > 512µs.

Is LTC6993HS6-2#TRMPBF compatible with 2.5V logic systems?

Yes, the LTC6993HS6-2#TRMPBF operates from 2.25V to 5.5V, making it fully compatible with 2.5V logic systems. At V+ = 2.5V, it delivers 20mA output drive, maintains 28ns trigger propagation delay, and achieves 60µA quiescent current with R_SET = 800kΩ - enabling robust timing in low-voltage portable and sensor applications without level-shifting.