TLV1811 datasheet(13/46 Pages) TI1

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8 Detailed Description

8.1 Overview

The TLV181x and TLV182x 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 and TLV182x 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 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 has a push-pull (sink-source) output.

The TLV182x 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 and TLV1821L are alternate pinouts of the TLV1811 and TLV1821 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 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, TLV1821, TLV1812, TLV1822, TLV1814, TLV1824

SNOSDC8C – SEPTEMBER 2022 – REVISED SEPTEMBER 2023

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