TLV1814QDRQ1

Comparators Overview

The TLV1814QDRQ1 is an automotive-grade quad-channel analog comparator from Texas Instruments, designed for high-voltage applications. It features a wide supply voltage range of 2.4V to 40V and operates within an ambient temperature range of -40°C to +125°C. The device utilizes rail-to-rail inputs and provides push-pull outputs capable of sourcing and sinking current. Key electrical specifications include a typical propagation delay of 420ns, a quiescent current of 5μA per channel, and a low input offset voltage of 500μV. It incorporates a Power-On Reset (POR) feature to ensure known output states during power transitions.

Comparators Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for reliability in harsh environments
• Integrated Power-On Reset (POR) circuitry ensures deterministic output behavior during system startup and shutdown
• Push-pull output stage enables direct driving of capacitive loads such as MOSFET gates without external pull-up resistors
• Rail-to-rail input capability allows signal processing across the full supply voltage range

Comparators Applications

• Hybrid electric vehicle (HEV) and electric vehicle (EV) powertrain systems
• Infotainment and instrument cluster control modules
• Body control module logic interfaces

Comparators Procurement Notes

Verify that the ordering suffix matches the required package type, specifically SOIC-14 for the DRQ1 variant. Confirm the component meets AEC-Q100 Grade 1 requirements for the specified temperature range. Ensure design compliance with functional safety documentation if utilized in safety-critical automotive architectures. Validate pinout compatibility against existing board layouts due to potential channel naming conventions.

Comparators Selection Notes

Select this component when high-voltage operation up to 40V is required alongside micro-power consumption. The push-pull output configuration is preferred over open-drain variants when driving capacitive loads or eliminating external pull-up components. Consider the 420ns propagation delay for timing-sensitive applications. Verify input voltage limits do not exceed supply rails by more than 200mV to prevent ESD clamp conduction issues.

Comparators Part Context

This device belongs to the TLV181x-Q1 family of automotive comparators, which also includes single (TLV1811-Q1) and dual (TLV1812-Q1) channel versions. All family members share identical electrical characteristics, including the 40V rating, 5μA per channel current consumption, and rail-to-rail input architecture. The primary distinction lies in the channel count and physical package footprint, allowing designers to scale functionality while maintaining consistent performance parameters.

Comparators Replacement Considerations

Direct replacements within the same family include TLV1811QDRQ1 (single channel) and TLV1812QDRQ1 (dual channel). For legacy upgrades, the TLV7211/7221 series offers compatible pinouts in specific packages. Note that the TLV182x-Q1 series provides open-drain outputs instead of push-pull, requiring different circuit design considerations.