V

IN

V

ref

V

OUT

V

S

0.1 µF

2.2 µF

R

+IN A

±IN A

+

±

A

V+

V±

+IN B

±IN B

+

±

B

V+

V±

OUT A

OUT B

TLV3502-Q1

www.ti.com

SBOS507A – FEBRUARY 2010 – REVISED DECEMBER 2014

7 Detailed Description

7.1 Overview

The TLV3502-Q1 push-pull output comparator features a fast 4.5-ns propagation delay and operation from

2.7 V to 5.5 V. Beyond-the-rails input common-mode range makes it an ideal choice for low-voltage

applications. The rail-to-rail output directly drives either CMOS or TTL logic.

7.2 Functional Block Diagram

7.3 Feature Description

The TLV3502-Q1 device feature fast 4.5-ns propagation delay with a push-pull output. The device operates from

2.7 V to 5.5 V. It has beyond-the-rails input common-mode range and rail-to-rail output directly drives either

CMOS or TTL logic.

7.3.1 Input Over-Voltage Protection

Device inputs are protected by ESD diodes that will conduct if the input voltages exceed the power supplies by

more than approximately 300 mV. Momentary voltages greater than 300 mV beyond the power supply can be

tolerated if the input current is limited to 10 mA. This limiting is easily accomplished with a small input resistor in

series with the comparator, as shown in Figure 15.

Figure 15. Input Current Protection for Voltages Exceeding the Supply Voltage

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