Analog Devices Inc. LT1719IS6#TRMPBF

Overview

LT1719IS6#TRMPBF from Analog Devices (formerly Linear Technology) is an UltraFast™ rail-to-rail output comparator in a 6-lead TSOT-23 package, designed for low-voltage single-supply operation (2.7V to 6V). It delivers 4.5ns propagation delay at 20mV overdrive, 7ns at 5mV overdrive, and features internal 3.5mV typical hysteresis, 4.2mA supply current at 3V, and 0.1μA shutdown current - enabling high-speed threshold detection in portable instrumentation and clock conditioning circuits.

For engineers reviewing the LT1719IS6#TRMPBF datasheet, LT1719IS6#TRMPBF pinout, LT1719IS6#TRMPBF application, or LT1719IS6#TRMPBF equivalent, key selection criteria include its guaranteed propagation delay across temperature (–40°C to +85°C), rail-to-rail TTL/CMOS-compatible output drive, separate input/output supply capability (not applicable to S6), and validated shutdown functionality with <350ns wake-up delay.

Technical Context

The LT1719IS6#TRMPBF employs a complementary bipolar input stage with PNP differential pair, enabling wide common-mode range (V– – 0.1V to V+ – 1.2V) and low input offset voltage (0.4–3.5mV). Its internal hysteresis (2.0–7mV) eliminates oscillation on slow-moving inputs without external components.

Output stage uses symmetric rail-to-rail push-pull architecture optimized for 3V/5V logic interfacing, delivering VOH = V+ – 0.4V (at 4mA) and VOL = 0.4V (at 10mA). Shutdown control (active-high, threshold ≈ V+ – 1.4V) places all terminals in high-impedance state with <80μA max leakage at 3V.

Key Specifications

Pinout & Package

LT1719IS6#TRMPBF is housed in a 6-lead Plastic TSOT-23 package (1.6mm × 1.6mm × 0.8mm profile), rated for –40°C to +85°C operation and RoHS-compliant with lead-free finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed comparator applications.

Compared with MAX961ASA+ and ADCMP600BRMZ, LT1719IS6#TRMPBF uniquely combines single-supply operation, integrated hysteresis, and shutdown control in a compact TSOT-23 package - making it optimal for space-constrained, battery-sensitive, and noise-prone industrial sensing nodes.

Availability

LT1719IS6#TRMPBF is available at Aetrix Electronics and suitable for crystal oscillator circuits, threshold detectors, high-speed sampling circuits, and level translators requiring stable component supply across industrial temperature ranges.

Supply support for LT1719IS6#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, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.

The LT1719 belongs to ADI's UltraFast™ comparator product line, engineered for sub-5ns propagation delay and low-power single-supply operation in timing-critical signal conditioning and clock generation applications.

FAQ

What is the guaranteed propagation delay specification for LT1719IS6#TRMPBF over temperature?

The LT1719IS6#TRMPBF guarantees 6.5ns maximum propagation delay at 20mV overdrive across its full operating range of –40°C to +85°C. At 25°C, typical delay is 4.5ns. This specification is validated per the datasheet's tPD20 parameter under V+ = 5V, V– = GND, CLOAD = 10pF, and 100mV input step - ensuring predictable timing in crystal oscillator and sampling circuit designs.

Does LT1719IS6#TRMPBF support dual-supply operation like the SO-8 version?

No, LT1719IS6#TRMPBF does not support separate input and output supplies. It uses a single supply configuration with V+ and V– pins powering both stages, unlike the LT1719IS8 which provides independent +VS, VCC, and VEE pins. The TSOT-23 variant is strictly a single-supply device (2.7V to 6V between V+ and V–), simplifying layout but limiting rail-splitting flexibility.

How does the internal hysteresis of LT1719IS6#TRMPBF affect threshold accuracy?

The LT1719IS6#TRMPBF features 2.0–7mV internal hysteresis centered around the input offset voltage (0.4–3.5mV). This creates two distinct trip points: VTRIP+ and VTRIP–, differing by VHYST. While hysteresis improves noise immunity, it introduces a 3.5mV ±3.5mV window where input transitions do not toggle output - critical for precision zero-crossing detection but beneficial in noisy threshold applications.

Can LT1719IS6#TRMPBF drive a 50Ω transmission line directly?

Yes, LT1719IS6#TRMPBF can drive a 50Ω load, but with trade-offs: at 5V supply, VOL rises to ~0.6V and VOH drops to ~4.4V under 10mA sink/source, degrading logic margins. For clean 50Ω termination, use series-resistor matching (e.g., 33Ω in series with 50Ω line) or AC-coupled termination. The 2.2ns fall time and 2.5ns rise time support integrity up to 200MHz with proper PCB layout.

What is the wake-up delay when exiting shutdown mode for LT1719IS6#TRMPBF?

The LT1719IS6#TRMPBF exhibits a maximum wake-up delay of 350ns when transitioning from shutdown to active state, measured from SHDN falling edge to valid VOH/VOL at 1mA load. This delay is fully characterized over –40°C to +85°C and enables rapid reactivation in burst-mode sensing applications without compromising timing predictability.