Texas Instruments TLV7021DBVR

Overview

TLV7021DBVR from Texas Instruments is a single-channel, open-drain output micropower comparator with rail-to-rail input capability, 5 µA quiescent current, 260 ns propagation delay (high-to-low), and operation from 1.6 V to 6.5 V supply. It delivers precise threshold detection in battery-powered IR receivers and level translation circuits where low power and fast response are critical.

For engineers reviewing the TLV7021DBVR datasheet, TLV7021DBVR pinout, TLV7021DBVR application, or TLV7021DBVR equivalent, this page provides verified package mapping (SC70-5), confirmed open-drain functionality, validated hysteresis (1.2–14 mV), temperature range (–40°C to 125°C), and real-world use cases in portable voltage monitoring and zero-crossing detection.

Technical Context

The TLV7021DBVR implements a rail-to-rail input stage tolerant up to 100 mV beyond VCC and features internal hysteresis to suppress noise-induced output oscillation. Its open-drain output supports pull-up to voltages exceeding VCC-enabling bipolar-to-single-ended conversion and flexible logic-level interfacing.

It integrates a Power-on-Reset (POR) circuit that holds the output in high-impedance state during supply ramp-up or ramp-down, preventing undefined logic states. Input fault tolerance extends to 5.5 V independent of VCC, allowing safe operation during power sequencing in mixed-voltage systems.

Key Specifications

Pinout & Package

TLV7021DBVR is packaged in a 5-pin SC70 (DCK) package measuring 2.00 mm × 1.25 mm, optimized for space-constrained PCB layouts in portable electronics.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV7021DBVR, TLV7021DBVT offers identical electrical performance in a smaller package, while LMV7215MF/NOPB trades micropower operation for speed - making TLV7021DBVR optimal for energy-sensitive, space-constrained designs requiring open-drain flexibility.

Availability

TLV7021DBVR is available at Aetrix Electronics and suitable for portable medical sensors, battery management systems, and IR remote receivers requiring stable component supply across long production lifecycles.

Supply support for TLV7021DBVR 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 conditioning and low-power design.

The TLV7021DBVR belongs to TI's TLV702x micropower comparator family, engineered specifically for battery-operated and space-constrained applications demanding rail-to-rail input, open-drain output, and sub-µA quiescent current.

FAQ

What is the maximum input voltage the TLV7021DBVR can tolerate when VCC is unpowered?

The TLV7021DBVR features fault-tolerant inputs rated for 0–5.5 V regardless of VCC state. This allows safe connection of external signals (e.g., sensor outputs) during power-up sequencing or brownout conditions without risk of latch-up or damage - a key advantage over non-fault-tolerant comparators. The TLV7021DBVR maintains high input impedance even with VCC = 0 V.

Does the TLV7021DBVR require an external pull-up resistor on its output?

Yes - the TLV7021DBVR has an open-drain output and must be used with an external pull-up resistor to define the high logic level. The pull-up voltage may exceed VCC (up to 6 V), enabling level translation. Typical values range from 2.5 kΩ (for fast rise time) to 100 kΩ (for ultra-low current), depending on load capacitance and speed requirements. The TLV7021DBVR itself does not integrate a pull-up.

How does the internal hysteresis of the TLV7021DBVR improve noise immunity?

The TLV7021DBVR provides 1.2–14 mV of internal hysteresis, creating distinct upper and lower switching thresholds. This prevents output oscillation when input signals hover near the decision point due to noise or slow slew rates - especially critical in battery monitors and zero-crossing detectors. Unlike external hysteresis networks, the TLV7021DBVR's built-in version requires no additional resistors or layout area.

Can the TLV7021DBVR operate from a 1.6 V supply while maintaining full specification?

Yes - the TLV7021DBVR is fully specified down to 1.6 V supply voltage across its full operating temperature range (–40°C to 125°C). At 1.6 V, it retains 5 µA quiescent current, rail-to-rail input operation, and functional hysteresis. This makes the TLV7021DBVR uniquely suited for single-cell LiFePO₄ or alkaline systems where supply drops below 2 V during discharge.

What is the purpose of the Power-on-Reset (POR) circuit in the TLV7021DBVR?

The POR circuit in the TLV7021DBVR forces the output into a known high-impedance state while VCC ramps from 0 V to ≥1.6 V. This prevents undefined logic levels or false triggers during power-up - essential in systems where downstream logic (e.g., microcontroller GPIO) must initialize before receiving valid comparator signals. The TLV7021DBVR exits POR automatically once VCC stabilizes within specification.