Texas Instruments TLV1822DSGR

Overview

TLV1822DSGR from Texas Instruments is a dual-channel, 40V rail-to-rail input comparator with open-drain outputs, 5 μA per channel quiescent current, 420 ns typical propagation delay at 12 V, and –40°C to +125°C operating range. It serves as a precision voltage threshold detector in high-voltage industrial sensing and motor control feedback paths.

For engineers reviewing the TLV1822DSGR datasheet, TLV1822DSGR pinout, TLV1822DSGR application, or TLV1822DSGR equivalent, this page delivers verified electrical specs, package-validated pin functions, real-world use cases, and two confirmed alternative parts for design flexibility in automotive-grade and factory automation systems.

Technical Context

The TLV1822DSGR implements a dual independent comparator core with rail-to-rail inputs extending from (V−) − 0.2 V to (V+) + 0.2 V and an internal Power-On Reset (POR) circuit that holds outputs in a known state until supply reaches ≥2.4 V. Its open-drain output stage allows pull-up to up to 40 V independent of V+, enabling level translation across disparate supply domains.

Each channel features 150 fA input bias current, 500 μV max input offset voltage (±4 mV over full temperature), and 100 dB PSRR - supporting stable operation in noisy 24 V/40 V industrial rails without external filtering. The POR timeout is 200 μs, ensuring glitch-free startup during brown-out conditions.

Key Specifications

Pinout & Package

TLV1822DSGR is packaged in an 8-pin WSON (DSG) with 2.00 mm × 2.00 mm body and exposed thermal pad on underside, requiring direct connection to V− for thermal and ESD performance.

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, TLV1822DSGR uniquely combines 40 V operation, 5 μA power, 420 ns speed, rail-to-rail input, and integrated POR - making it optimal for new designs demanding robustness, efficiency, and deterministic startup in harsh environments.

Availability

TLV1822DSGR is available at Aetrix Electronics and suitable for industrial motor drives, factory automation sensor interfaces, and automotive battery management systems requiring stable component supply across extended temperature and voltage ranges.

Supply support for TLV1822DSGR 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 high-reliability industrial and automotive signal conditioning ICs.

The TLV1822DSGR belongs to TI's TLV182x family of micro-power comparators designed specifically for high-voltage, low-power sensing in factory automation, motor control, and battery-powered safety systems.

FAQ

What is the maximum allowable pull-up voltage on TLV1822DSGR open-drain outputs?

The TLV1822DSGR open-drain outputs support pull-up voltages up to 40 V, independent of the device's V+ supply voltage. This allows interfacing with 24 V PLC I/O or 36 V battery rails while powering TLV1822DSGR from a lower 3.3 V or 5 V domain - a key advantage over standard comparators limited to V+.

Does TLV1822DSGR include Power-On Reset (POR), and how does it behave?

Yes, TLV1822DSGR integrates a POR circuit that holds both outputs inactive for up to 200 μs after V+ crosses 2.4 V during power-up or drops below 2.4 V during power-down. During POR, outputs remain high-impedance (open-drain), preventing false triggers in critical startup sequences - a feature absent in LM393 and TLV7212.

Can TLV1822DSGR operate from a 2.4 V supply, and what performance trade-offs apply?

Yes, TLV1822DSGR is fully specified down to 2.4 V supply. At this minimum, propagation delay increases to ~900 ns (vs. 420 ns at 12 V), and input offset remains within ±4 mV. Quiescent current stays near 5 μA, making it viable for ultra-low-power 2.4–3.6 V battery monitoring where speed is secondary to runtime.

How should unused inputs be terminated on TLV1822DSGR to prevent oscillation?

Unused inputs on TLV1822DSGR must never be shorted together. Instead, tie one input to a stable voltage within the rail-to-rail range (e.g., V− or V+) and the other to a reference ≥50 mV away - such as grounding IN1− and connecting IN1+ to a 100 mV bias. This avoids self-triggering from internal noise due to the device's high bandwidth and low offset.

Is TLV1822DSGR pin-compatible with other packages in the TLV182x family?

No - TLV1822DSGR (WSON-8, DSG) has a unique 2.0 mm × 2.0 mm footprint with bottom thermal pad. It is not pin-compatible with SOIC-8 (D), TSSOP-8 (PW), or VSSOP-8 (DGK) variants of TLV1822, which use different pinouts and thermal structures. Layout must be specific to DSG package dimensions and pad layout.