6 Detailed Description

6.1 Overview

The TLV3603-EP is a high-speed comparator with a single-ended (push-pull) output stage. The fast response

time is well suited for applications that require narrow pulse width detection or high toggle frequencies. The

TLV3603-EP is available in a 6-pin SOT23 package.

6.2 Functional Block Diagram

+

–

VCC

VEE

OUT

LE/HYST

6.3 Feature Description

The TLV3603-EP is a single channel, high speed comparator with a typical propagation delay of 2.5ns and a

push-pull output. The minimum pulse width detection capability is 1.5ns and the typical toggle rate is 325MHz.

This comparator is well-suited for distance measurement applications that utilize a time-of-flight architecture as

well as systems that suffer from capacitive loading and require data and clock recovery. In addition to high

speed, the TLV3603-EP offers a rail-to-rail input stage capable of operating up to 300mV beyond each power

supply rail combined with a maximum 7mV input offset. The TLV3603-EP also provides adjustable hysteresis via

an external resistor for noise supression or a latching mode to hold the output of the comparator output.

6.4 Device Functional Modes

The TLV3603-EP 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 LE/HYS pin. The resistor value creates

a specified amount of internal hysteresis for the comparator without requiring external, positive feedback. The

second is a latch mode where the output is held at the last active state when the LE/HYS pin is pulled low. The

TLV3603-EP returns to active mode after a short delay when the pin is pulled high.

6.4.1 Inputs

The TLV3603-EP features an input stage capable of operating 300mV below negative power supply (ground)

and 300mV 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 must be used

to limit the current to less than 10mA to avoid damaging the inputs when exceeding the recommended input

voltage range.

6.4.2 Push-Pull (Single-Ended) Output

The TLV3603-EP output has excellent drive capability and is designed to connect directly to CMOS logic input

devices. Likewise, the comparator output stage is capable of driving 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 Load Capacitance. For maximum speed and

performance, output load capacitance must be minimized.

TLV3603-EP

SNOSDK3 – SEPTEMBER 2024

www.ti.com

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