Texas Instruments TLV1811LDBVR

Overview

TLV1811LDBVR from Texas Instruments is a single-channel, 40V rail-to-rail input comparator with push-pull output, 5 μA quiescent current per channel, 420 ns typical propagation delay at 12 V, and Power-On Reset (POR) for deterministic startup in motor drive voltage monitoring circuits.

For engineers reviewing the TLV1811LDBVR datasheet, TLV1811LDBVR pinout, TLV1811LDBVR application, or TLV1811LDBVR equivalent, this device supports high-voltage industrial sensing, low-power battery-operated systems, and robust start-up sequencing where known output state during supply ramp-up is critical.

Technical Context

The TLV1811LDBVR implements a rail-to-rail input stage with ±0.2 V common-mode range extension beyond V− and V+, enabling direct interface to 0–40 V signal sources without level-shifting. Its internal POR circuit holds the push-pull output low until V+ reaches ≥2.4 V and remains active for 200 μs after crossing threshold.

As a member of the TLV181x push-pull family, it features a CMOS output stage capable of sourcing/sinking ≥4 mA while maintaining VOL ≤ 250 mV and VOH ≤ 250 mV (at 4 mA, −40°C to +125°C), with input bias current as low as 150 fA and offset voltage ±0.5 mV (typ).

Key Specifications

Pinout & Package

SOT-23-5 (DBV) package, 1.60 mm × 2.90 mm body size, with exposed pad not present in this variant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV1811DBVR, TLV1811LDBVR offers identical performance but requires attention to supply pin reversal; compared with LMC7211BIM5X, it delivers 40 V operation, 5× faster response, and guaranteed POR-making it superior for industrial and automotive voltage supervision.

Availability

TLV1811LDBVR is available at Aetrix Electronics and suitable for motor drive protection, industrial PLC analog input guarding, and appliance interlock sensing requiring stable component supply across extended temperature and voltage ranges.

Supply support for TLV1811LDBVR 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

Texas Instruments is a global semiconductor leader focused on analog and embedded processing technologies, with decades of expertise in precision signal conditioning and high-reliability industrial ICs.

The TLV181x family was designed specifically for high-voltage, low-power industrial and automotive sensing applications where rail-to-rail input, deterministic startup, and robust ESD performance are mandatory.

FAQ

What is the function of the Power-On Reset (POR) feature in TLV1811LDBVR?

The POR feature in TLV1811LDBVR holds the push-pull output low for ≥200 μs after V+ crosses 1.7 V during power-up or drops below that threshold during power-down. This ensures the TLV1811LDBVR output remains in a known, safe state throughout supply ramping-critical for preventing false trips in motor drive fault detection and industrial safety circuits.

Can TLV1811LDBVR operate with a 3.3 V supply and still achieve rail-to-rail input performance?

Yes, TLV1811LDBVR operates down to 2.4 V and maintains rail-to-rail input capability from V− − 0.2 V to V+ + 0.2 V. At 3.3 V supply, its inputs accept signals from −0.2 V to +3.5 V, enabling direct interface with 3.3 V microcontroller GPIOs, DAC outputs, and sensor references without level shifting-while consuming only 5 μA per channel.

How does the push-pull output of TLV1811LDBVR differ from open-drain comparators like TLV1821LDBVR?

The TLV1811LDBVR push-pull output actively drives both high and low states, eliminating the need for an external pull-up resistor and enabling direct driving of LEDs or MOSFET gates. In contrast, TLV1821LDBVR's open-drain output only sinks current and requires an external pull-up. This makes TLV1811LDBVR more efficient in low-power, space-constrained applications where board real estate and component count matter.

What is the maximum input overvoltage the TLV1811LDBVR can tolerate without damage?

TLV1811LDBVR has absolute maximum input ratings of −0.3 V to (V+) + 0.3 V relative to V−. Exceeding these limits risks permanent damage. For reliable operation, inputs must stay within V− − 0.2 V to V+ + 0.2 V under recommended conditions. If overvoltage transients are possible, series current-limiting resistors (≤10 mA total) are required per TI's ESD protection guidelines.

Is TLV1811LDBVR suitable for use in automotive under-hood applications?

Yes, TLV1811LDBVR is qualified for −40°C to +125°C operation, features 40 V absolute maximum supply rating, and includes 2 kV HBM ESD protection-meeting key requirements for under-hood engine control and battery monitoring. Its POR function and low 5 μA quiescent current further support automotive cold-cranking and always-on subsystems.