+

_

TLV1701

REF3333

GND

Time (5 ms/div)

Output Voltage

Input Voltage

C030

TLV1701, TLV1702, TLV1704

SBOS589D – DECEMBER 2013 – REVISED JUNE 2015

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8.3 Feature Description

8.3.1 Comparator Inputs

The TLV170x are rail-to-rail input comparators, with an input common-mode range that includes the supply rails.

The TLV170x is designed to prevent phase inversion when the input pins exceed the supply voltage. Figure 18

shows the TLV170x response when input voltages exceed the supply, resulting in no phase inversion.

Figure 18. No Phase Inversion: Comparator Response to Input Voltage

(Propagation Delay Included)

8.4 Device Functional Modes

8.4.1 Setting Reference Voltage

Using a stable reference is important when setting the transition point for the TLV170x. The REF3333, as shown

in Figure 19, provides a 3.3-V reference voltage with low drift and only 3.9

μA of quiescent current.

Figure 19. Reference Voltage for the TLV170x

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