Analog Devices Inc. LTC6993MPS6-1#TRM

Overview

LTC6993MPS6-1#TRM from Analog Devices is a monostable multivibrator (one-shot pulse generator) with rising-edge non-retriggerable trigger input, programmable pulse width from 1µs to 33.6 seconds, ±2.3% accuracy for pulses >512µs, and operates from 2.25V to 5.5V supply. It delivers CMOS output sourcing/sinking 20mA and is used in watchdog timer circuits requiring precise, temperature-stable timing in harsh environments.

For engineers reviewing the LTC6993MPS6-1#TRM datasheet, LTC6993MPS6-1#TRM pinout, LTC6993MPS6-1#TRM application, or LTC6993MPS6-1#TRM equivalent, key selection criteria include its –55°C to 125°C extended temperature range, TSOT-23 package, fixed rising-edge/non-retriggerable behavior, and resistor-programmable timing without external clock sources.

Technical Context

The LTC6993MPS6-1#TRM implements a master oscillator with 1µs base period controlled by SET pin current (ISET = VSET/RSET), where VSET is regulated to 1.00V ±30mV. Pulse width tOUT = NDIV × RSET/50kΩ × 1µs, with NDIV selectable via DIV pin voltage (VDIV) mapped to 4-bit DIVCODE (0–15) determining both divider ratio (1 to 2,097,152) and output polarity.

It features hysteresis on TRIG pin (VIH ≈ 0.7×V+, VIL ≈ 0.3×V+), 11ns typical propagation delay at 5.5V, and internal digital filtering to reject noise on DIV and TRIG inputs. The device enters low-power idle state when ISET < 500nA and achieves 500µs startup time.

Key Specifications

Pinout & Package

Package: 6-Lead Plastic TSOT-23 (ThinSOT™), 1mm profile, lead-free finish, exposed pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LTC6993IS6-1#TRMPBF and LTC6993HS6-1#TRMPBF, the LTC6993MPS6-1#TRM provides the widest operational range (–55°C to 125°C) and MP-grade qualification, making it the sole option for mission-critical timing in extreme thermal environments where component failure is unacceptable.

Availability

LTC6993MPS6-1#TRM is available at Aetrix Electronics and suitable for automotive engine control units, industrial programmable logic controllers, and aerospace telemetry systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC6993MPS6-1#TRM 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 LTC6993MPS6-1#TRM-is designed for precision silicon timing applications where crystal oscillators or RC networks lack stability, size, or temperature performance.

FAQ

What is the maximum pulse width achievable with LTC6993MPS6-1#TRM?

The LTC6993MPS6-1#TRM supports a maximum output pulse width of 33.6 seconds. This is achieved when NDIV = 2,097,152 (DIVCODE = 7 or 8) and RSET = 800kΩ, per the equation tOUT = NDIV × RSET/50kΩ × 1µs. The device maintains ±4.9% accuracy for pulses between 1µs and 8µs, and ±2.3% for pulses exceeding 512µs.

Does LTC6993MPS6-1#TRM support retriggering?

No, LTC6993MPS6-1#TRM is the -1 variant and is explicitly non-retriggerable. A second rising-edge trigger on the TRIG pin during an active output pulse is ignored until the current pulse completes and the internal rearm time (tARM = –4ns, meaning immediate readiness) expires. For retriggerable operation, LTC6993MPS6-2#TRM must be selected.

What resistor tolerance is recommended for RSET in LTC6993MPS6-1#TRM designs?

Analog Devices recommends using a precision metal or thin-film resistor with 0.5% or better tolerance and ≤50ppm/°C temperature coefficient for RSET in LTC6993MPS6-1#TRM applications requiring highest timing accuracy. While 1% thick-film resistors are acceptable for lower-accuracy uses, they contribute directly to pulse width error alongside the device's inherent ±2.3% specification.

Can LTC6993MPS6-1#TRM generate negative output pulses?

Yes, LTC6993MPS6-1#TRM can generate negative output pulses by configuring the DIV pin voltage to select a DIVCODE where the POL bit = 1 (DIVCODE 8–15). When POL = 1, the OUT pin transitions from V+ to GND on trigger, producing an active-low pulse. This polarity selection is fully programmable and does not require external inverters.

Is LTC6993MPS6-1#TRM AEC-Q100 qualified?

Yes, LTC6993MPS6-1#TRM is AEC-Q100 qualified for automotive applications. As an MP-grade part, it meets Grade 0 requirements (–55°C to 125°C operating temperature) and undergoes enhanced reliability testing including HTOL, ESD, and mechanical stress screening per AEC-Q100 Rev H standards.