7 Detailed Description

7.1 Overview

THVD2410V-EP and THVD2450V-EP are fault-protected, half duplex RS-485 transceivers available in two

speed grades suitable for data transmission up to 1Mbps and 50Mbps respectively. THVD2452V-EP is a

full-duplex transceiver that can be configured for two speeds using the SLR pin: 20Mbps and 50Mbps. The

devices have active-high driver enables and active-low receiver enables. A shutdown current of less than 1µA

can be achieved by disabling both driver and receiver.

7.2 Functional Block Diagrams

D

DE

R

GND

V

IO

SLR

RE

A

B

V

CC

Figure 7-1. THVD2410V-EP and THVD2450V-EP Block Diagram

Y

Z

A

B

D

DE

R

V

CC

V

IO

SLR

RE

GND

Figure 7-2. THVD2452V-EP Block Diagram

7.3 Feature Description

7.3.1 ±70-V Fault Protection

THVD24xxV-EP transceivers have extended bus fault protection compared to standard RS-485 devices.

Transceivers that operate in rugged industrial environments are often exposed to voltage transients greater than

the -7V to +12V defined by the TIA/EIA-485A standard. To protect against such conditions, the generic RS-485

devices with lower absolute maximum ratings requires expensive external protection components. To simplify

system design and reduce overall system cost, THVD24xxV-EP devices are protected up to ±70V without the

need for any external components.

www.ti.com

THVD2410V-EP, THVD2450V-EP, THVD2452V-EP

SLLSFQ9B – MAY 2024 – REVISED OCTOBER 2024

Copyright © 2024 Texas Instruments Incorporated

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Product Folder Links: THVD2410V-EP THVD2450V-EP THVD2452V-EP