7 Detailed Description

7.1 Overview

The TLV3601 and TLV3603 are high-speed comparators with single-ended (push-pull) output stages. The fast

response time of these comparators make them well suited for applications that require narrow pulse width

detection or high toggle frequencies. The TLV3601 is available in a 5-pin SC70 and SOT23, while the TLV3603

is packaged in a 6-pin SC70 package.

7.2 Functional Block Diagram

+

LE/HYST

TLV3603

+

TLV3601

7.3 Feature Description

The TLV3601 and TLV3603 are single channel, high speed comparators with a typical propagation delay of 2.5

ns and push-pull outputs. The minimum pulse width detection capability is 1 ns and the typical toggle rate is

325 MHz. These comparators are well-suited for distance measurement applications that utilize a time-of-flight

arechitecture as well as systems that suffer from capacitive loading and require data and clock recovery. In

addition to their high speed, the TLV3601 and TLV3603 offer rail-to-rail input stages capable of operating up to

200 mV beyond each power supply rail combined with a maximum 5 mV input offset. The TLV3603 also provides

adjustable hysteresis via an external resistor for noise supression or a latching mode to hold the output of the

comparators.

7.4 Device Functional Modes

The TLV3601 has a single functional mode and is active when the power supply voltage is greater than 2.4V.

The TLV3603 has two modes of operation. The first is an active mode where the output reflects the condition at

the inputs when an external resistor is connected to ground on the LEB/HYST pin. The second is a latch mode

where the output is held at its last active state when the LEB/HYST pin is pulled low. The TLV3603 returns to

active mode after a short delay when the pin is pulled high.

7.4.1 Inputs

The TLV3601 and TLV3603 feature input stages capable of operating o –200 mV below negative power supply

(ground) and 200 mV beyond the positive supply voltage, allowing for zero cross detection and maximizing input

dynamic range given a certain power supply. The input stages are protected from conditions where the voltage

on either pin exceeds this level by internal ESD protection diodes to VCC and VEE. An external resistor should

be used to limit the current to less than 10mA.

7.4.2 Push-Pull (Single-Ended) Output

The TLV3601 and TLV3603 outputs have excellent drive capability and are designed to connect directly

to CMOS logic input devices. Likewise, the comparator output stages can drive capacitive loads. Transient

performance parameters in the Electrical Characteristics Tables and Typical Characteristics section are for a

load of 5pF, corresponding to a standard CMOS load. Device performance for larger capacitive loads can

be found in the typical performance curves titled Propagation Delay vs Capacitive Load and Toggle Rate vs

Capacitive Load. For optimal speed and performance, output load capacitance should be reduced as much as

possible.

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TLV3601, TLV3603

SNOSDB1 – JUNE 2021

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Product Folder Links: TLV3601 TLV3603