Texas Instruments TLV1822PWR

Overview

TLV1822PWR from Texas Instruments is a dual-channel, 40V rail-to-rail input comparator with open-drain outputs, designed for high-voltage industrial sensing and motor control feedback loops. It operates from 2.4V to 40V supply, delivers 420ns propagation delay at 12V, draws only 5μA per channel, and features Power-On Reset (POR) to prevent false triggering during power ramp-up. Its open-drain output supports independent pull-up to 40V - enabling level translation and wired-OR logic in multi-comparator systems.

For engineers reviewing the TLV1822PWR datasheet, TLV1822PWR pinout, TLV1822PWR application, or TLV1822PWR equivalent, this page provides verified functional context, validated dual-channel pin mapping for SOIC/TSSOP/VSSOP/WSON packages, confirmed 40V operation with rail-to-rail inputs, and real-world selection guidance against comparable dual open-drain comparators.

Technical Context

The TLV1822PWR implements two independent open-drain comparators with rail-to-rail input stages extending from (V−) − 0.2V to (V+) + 0.2V, and internal POR circuitry that holds outputs low until V+ reaches ≥2.4V and stabilizes for ≥200μs. Each channel consumes 5μA quiescent current across −40°C to +125°C and exhibits 150fA input bias current.

Its open-drain architecture allows output pull-up to any voltage ≤40V - decoupled from the comparator's own supply - supporting mixed-voltage interface design. Input offset voltage is ±0.5mV (typ), with ±1.2µV/°C drift over full temperature range, and ESD protection includes ±2kV HBM on all pins.

Key Specifications

Pinout & Package

TLV1822PWR is available in 8-pin SOIC (D), TSSOP (PW), VSSOP (DGK), SOT-23 (DDF), and WSON (DSG) packages. All variants share identical pin functions and thermal pad connection requirement: exposed die pad must be connected directly to V−.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual open-drain comparator applications.

Compared with LM393DR and TLV7212IDR, TLV1822PWR uniquely combines 40V open-drain operation, rail-to-rail inputs, 5μA quiescent current, and POR - making it the only option among the three qualified for robust, low-power, high-voltage industrial sensing with guaranteed startup behavior.

Availability

TLV1822PWR is available at Aetrix Electronics and suitable for motor drives, factory automation systems, and automotive battery management requiring stable component supply across extended temperature and voltage ranges.

Supply support for TLV1822PWR 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 specializing in analog and embedded processing technologies, with decades of expertise in precision signal chain and power management ICs.

The TLV1822PWR belongs to TI's TLV18xx family of micro-power comparators, engineered specifically for high-voltage industrial, automotive, and energy infrastructure applications demanding rail-to-rail input, low quiescent current, and reliable power-on behavior.

FAQ

What is the maximum allowable pull-up voltage on TLV1822PWR open-drain outputs?

The TLV1822PWR open-drain outputs support pull-up voltages up to 40V - independent of the device's own V+ supply voltage. This allows interfacing with higher-voltage logic domains or industrial 24V control lines while powering the comparator from a lower voltage rail such as 3.3V or 5V. Exceeding 40V violates absolute maximum ratings and risks permanent damage.

Does TLV1822PWR include Power-On Reset (POR), and how does it behave?

Yes, TLV1822PWR includes an internal POR circuit that holds both open-drain outputs low for ≥200μs after V+ rises above 2.4V, and reasserts low during brownout. This prevents false logic transitions during power ramp-up or interruption. The POR function is active across the full −40°C to +125°C temperature range and requires no external components.

Can TLV1822PWR operate with a single 3.3V supply, and what are the input voltage limits?

Yes, TLV1822PWR operates from 2.4V to 40V, so 3.3V is fully supported. With V+ = 3.3V and V− = 0V, the rail-to-rail input range extends from −0.2V to +3.5V. Inputs exceeding these limits risk forward-biasing internal ESD clamps; external current limiting is required if signals exceed V+ by >0.2V or go below V− by >0.2V.

What package options are available for TLV1822PWR, and do they share the same pinout?

TLV1822PWR is offered in SOIC-8 (D), TSSOP-8 (PW), VSSOP-8 (DGK), SOT-23-8 (DDF), and WSON-8 (DSG) packages. All share identical pin numbering and function mapping per Table 4-2 of the datasheet. The WSON variant includes an exposed thermal pad that must be soldered directly to the V− net on the PCB for thermal and electrical integrity.

How does TLV1822PWR's 150fA input bias current benefit high-impedance sensor interfaces?

TLV1822PWR's 150fA (typ) input bias current minimizes voltage drop across high-value resistive dividers or sensor elements - preserving measurement accuracy in applications like thermistor-based temperature sensing or high-resistance potentiometer position feedback. At 10MΩ source impedance, this bias introduces only 1.5µV error, versus >15mV error with typical µA-level comparators.