Analog Devices Inc. LTC6993HS6-2#TRPBF

Overview

LTC6993HS6-2#TRPBF from Analog Devices is a retriggerable rising-edge monostable multivibrator (one-shot) with programmable pulse width from 1µs to 33.6 seconds, 2.25V–5.5V supply operation, CMOS output sourcing/sinking 20mA, and –40°C to 125°C operating range. It serves as a precision timing element in watchdog circuits, missing-pulse detectors, and envelope detectors where stable, wide-range pulse generation is required.

For engineers reviewing the LTC6993HS6-2#TRPBF datasheet, LTC6993HS6-2#TRPBF pinout, LTC6993HS6-2#TRPBF application, or LTC6993HS6-2#TRPBF equivalent, key selection criteria include retrigger capability, NDIV programmability via DIV pin voltage, RSET-based pulse width accuracy (±2.3% for tOUT > 512µs), and TSOT-23 package compatibility with high-vibration environments.

Technical Context

The LTC6993HS6-2#TRPBF implements a master oscillator with 1µs base period controlled by ISET current sourced from the SET pin, where tMASTER = (RSET / 50kΩ) × 1µs. Pulse width is extended by an internal programmable divider (NDIV = 1, 8, 64, 512, 4096, 2¹⁵, 2¹⁸, or 2²¹) selected via a 4-bit DIVCODE derived from VDIV voltage on the DIV pin.

It features hysteresis on the TRIG input (VIH ≈ 0.7×V+, VIL ≈ 0.3×V+), fast propagation delay (11ns at V+ = 5.5V), and polarity control via the MSB of DIVCODE (POL bit). The device supports dynamic pulse width adjustment through analog control of ISET and maintains VSET regulated at 1.00V ±30mV.

Key Specifications

Pinout & Package

Package: 6-Lead Plastic TSOT-23 (S6), 1mm profile, exposed pad optional, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LTC6993IS6-2#TRPBF, the LTC6993HS6-2#TRPBF adds 40°C higher max operating temperature without layout changes; versus LTC6993HS6-2#WTRPBF, it lacks AEC-Q100 certification but offers identical timing performance at lower cost for non-automotive high-temp use.

Availability

LTC6993HS6-2#TRPBF is available at Aetrix Electronics and suitable for automotive engine control, industrial safety interlocks, and battery-powered sensor nodes requiring stable component supply across extended temperature ranges.

Supply support for LTC6993HS6-2#TRPBF 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#TRPBF-is designed for precision silicon timing applications where programmability, temperature stability, and retrigger capability replace legacy RC and crystal-based solutions.

FAQ

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

The LTC6993HS6-2#TRPBF supports a maximum output pulse width of 33.6 seconds, achieved when NDIV = 2²¹ and RSET = 800kΩ. This value is confirmed in the Electrical Characteristics table (tOUT MAX = 33.55 sec) and applies across the full –40°C to 125°C operating range. The timing equation tOUT = NDIV × RSET × 1µs / 50kΩ governs all configurations.

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

The LTC6993HS6-2#TRPBF is a rising-edge retriggerable monostable: each new TRIG rising edge while OUT is high restarts the timing cycle, extending the output pulse by tOUT from that edge. Minimum inter-trigger spacing is 10ns (NDIV = 1) or 50ns (NDIV > 1) at V+ = 3.3V. This behavior is distinct from non-retriggerable versions like LTC6993HS6-1#TRPBF.

Can LTC6993HS6-2#TRPBF generate negative output pulses?

Yes, the LTC6993HS6-2#TRPBF can generate negative (low-true) output pulses by setting the POL bit via the DIV pin voltage. When DIVCODE ≥ 8, the MSB (POL = 1) configures OUT to go low during the active pulse. Table 1 in the datasheet specifies exact resistor pairs (e.g., R1 = 887kΩ, R2 = 1000kΩ) to achieve DIVCODE = 8 and negative polarity.

What is the recommended bypass capacitor for LTC6993HS6-2#TRPBF?

A 0.1µF ceramic capacitor placed directly between V+ (Pin 5) and GND (Pin 2) is mandatory for stable operation of the LTC6993HS6-2#TRPBF. This minimizes supply noise coupling into the master oscillator, preventing jitter increase and pulse width inaccuracy. The capacitor must be X7R or better dielectric, mounted with shortest possible trace length to both pins.

Does LTC6993HS6-2#TRPBF require external components for basic operation?

Yes, the LTC6993HS6-2#TRPBF requires at minimum two external components for basic one-shot operation: a resistor (RSET) from SET (Pin 3) to GND to set tMASTER, and a resistor divider (R1/R2) on DIV (Pin 4) to select NDIV and polarity. A 0.1µF bypass capacitor on V+ is also mandatory. No external timing capacitor is needed-timing is fully resistor-programmed.