Texas Instruments TLV1822QDRQ1

Overview

TLV1822QDRQ1 from Texas Instruments is an automotive-grade dual-channel comparator with open-drain outputs, rail-to-rail inputs, 40V supply capability, 5μA per channel quiescent current, and 420ns typical propagation delay. It operates from –40°C to +125°C and is used in HEV/EV powertrain monitoring for battery cell voltage supervision and fault detection.

For engineers reviewing the TLV1822QDRQ1 datasheet, TLV1822QDRQ1 pinout, TLV1822QDRQ1 application, or TLV1822QDRQ1 equivalent, key selection criteria include AEC-Q100 Grade 1 qualification, 40V output pull-up independence from supply voltage, Power-On Reset (POR) behavior, and thermal performance in SOIC-8 packaging under automotive transients.

Technical Context

The TLV1822QDRQ1 implements a dual-channel architecture with independent rail-to-rail input stages and open-drain output drivers capable of sinking up to 30mA while supporting external pull-up voltages up to 40V-regardless of its own 2.4V–40V supply range. Each channel includes internal Power-On Reset logic that holds outputs in a known state until V+ exceeds 1.7V.

Its input stage features ESD protection with a lower clamp to V− and a soft upper clamp (5kΩ series resistance) to V+, requiring external current limiting if inputs exceed supply rails. The open-drain topology enables wired-OR logic and level translation between disparate voltage domains-critical in body control modules interfacing 5V microcontrollers with 24V sensor signals.

Key Specifications

Pinout & Package

TLV1822QDRQ1 is packaged in an 8-pin SOIC (D package), 3.91mm × 4.90mm body size, with exposed thermal pad connected directly to V− for improved thermal dissipation in automotive environments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV1822IDR and LM393BQDRQ1, TLV1822QDRQ1 uniquely delivers AEC-Q100 Grade 1 compliance, 40V operation, 5μA quiescent current, and integrated POR-making it the only option qualified for demanding automotive powertrain and battery management roles where reliability and deterministic startup are mandatory.

Availability

TLV1822QDRQ1 is available at Aetrix Electronics and suitable for HEV/EV battery supervision, infotainment display control, and body control module designs requiring stable component supply across extended automotive temperature ranges and long production lifecycles.

Supply support for TLV1822QDRQ1 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 automotive IC design expertise and broad manufacturing scale.

The TLV18xx-Q1 family was engineered specifically for automotive signal conditioning in harsh environments-delivering precision, ultra-low power, and robustness across 12V/24V/48V systems while meeting AEC-Q100 reliability standards.

FAQ

What is the maximum allowable pull-up voltage on TLV1822QDRQ1 outputs?

The TLV1822QDRQ1 open-drain outputs support external pull-up voltages up to 40V, independent of the device's own supply voltage (2.4V–40V). This enables direct interfacing with higher-voltage domains such as 24V or 36V systems without level-shifting components. Exceeding 40V risks damage to the output structure, as specified in Absolute Maximum Ratings.

Does TLV1822QDRQ1 include Power-On Reset functionality?

Yes, TLV1822QDRQ1 integrates a dedicated Power-On Reset (POR) circuit that holds both outputs in a known state until the V+ supply rises above 1.7V. This prevents false triggering during power-up, cold-cranking, or brown-out conditions-critical for automotive applications where supply transients are common.

Can TLV1822QDRQ1 operate from a 2.4V supply while driving a 5V pull-up?

Yes, TLV1822QDRQ1 can operate from a 2.4V supply and simultaneously drive a 5V pull-up on its open-drain outputs. Its output stage is designed for voltage-domain independence: the internal FET sinks current regardless of pull-up voltage, as long as it remains ≤40V and within Absolute Maximum Ratings.

What is the input voltage range specification for TLV1822QDRQ1?

The TLV1822QDRQ1 features rail-to-rail inputs with a common-mode range from (V− − 0.2V) to (V+ + 0.2V). This allows direct sensing of signals near ground or near the positive rail-essential for battery voltage monitoring and sensor interface applications where full-supply utilization is required.

Is TLV1822QDRQ1 pin-compatible with any legacy comparators?

TLV1822QDRQ1 is not pin-compatible with standard LM393 or LM339 packages due to its SOIC-8 footprint and dual open-drain architecture. However, the TLV1822QDRQ1 SOIC-8 pinout matches TI's TLV1812-Q1 (push-pull) and TLV1822-Q1 family members, enabling layout reuse across functional variants within the same package option.