TLV1812 datasheet(13/54 Pages) TI1

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8 Detailed Description

8.1 Overview

The TLV181x-Q1 and TLV182x-Q1 devices are micro-power comparators with push-pull and open-drain output

options. Operating down to 2.4 V while only consuming only 5 µA per channel, the TLV181x-Q1 and TLV182x-

Q1 are well suited for portable, automotive and industrial applications. An internal power-on reset circuit ensures

that the output remains in a known state during power-up and power-down.

8.2 Functional Block Diagrams

OUT

IN+

IN-

Bias

Power-On

Reset

V+

V-

V+

V-

Output

Control

V-

V+

* Push-Pull

Version Only

Power

Clamp

V+

ESD

CLAMPS

Figure 8-1. TLV18xx-Q1 Block Diagram

8.3 Feature Description

TLV18xx Family Options

The TLV18xxy family consists of several output and pinout options, all featuring 40 V operation, micro-power 5

µA supply currents, 420 ns propagation delay, and a Power-On Reset (POR) function.

The TLV18xx family has two output options:

The TLV181x-Q1 has a push-pull (sink-source) output.

The TLV182x-Q1 has a open-drain (sink only) output, capable of being pulled-up to any voltage up to 40 V,

independent of comparator supply voltage.

The TLV1811L-Q1 and TLV1821L-Q1 are alternate pinouts of the TLV1811-Q1 and TLV1821-Q1 that allow

upgrading older devices such as the TLV7211, TLV7221, LMC7211 and LMC7221 family.

8.4 Device Functional Modes

8.4.1 Inputs

8.4.1.1 TLV18xx Rail-to-Rail Input

The TLV18xx-Q1 input voltage range extends from 200 mV below V- to 200 mV above V+. The differential input

voltage (VID) may be any voltage within these limits. No phase-inversion of the comparator output will occur

when the input voltages stay within the specified range.

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TLV1811-Q1, TLV1821-Q1, TLV1812-Q1, TLV1822-Q1

TLV1814-Q1, TLV1824-Q1

SNOSDC9B – OCTOBER 2022 – REVISED SEPTEMBER 2023

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Product Folder Links: TLV1811-Q1 TLV1821-Q1 TLV1812-Q1 TLV1822-Q1 TLV1814-Q1 TLV1824-Q1

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