Texas Instruments THVD4421 User Manual

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EVM User's Guide: THVD4421EVM
THVD4421 Evaluation Module
Description
The THVD4421EVM allows for quick prototyping of
TI's RS-485 and RS-232 multiprotocol transceiver
(THVD4421). The EVM allows for half and full
duplex RS-485 operational modes, 2T2R RS-232
communication, and allows for on-chip diagnostic
loopback testing for the RS-232. The THVD4421EVM
can be powered by a single supply from 3V to 5.5V or
can have a separate logic supply that allows control
of the transceiver by controllers operating as low as
1.8V. Multiple speeds are allowed through the use
of the slew rate control pin and the ability to use
integrated terminations in RS-485 mode.
Get Started
1. Order the EVM from ti.com (THVD4421EVM)
2. See the latest product information and data sheet
for the THVD4421 (SLLSFS0)
THVD4421EVM (Top Side)
SLLU379 – MARCH 2024
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Features
• THVD4421RHB pre-installed onto evaluation
module.
• 8 bulk power-supply decoupling capacitor pads
for VCC and VIO connections (bottom layer
connection).
• 0603 resistor pads available to create resistive link
between GND and EARTH connections for both
VIO and VCC terminals.
• Terminal and header pin access to RS-232 and
RS-485 bus signals.
• D-Sub or header connections for RS-232 signals.
Applications
• Industrial PC
• Factory automation and control
• HVAC systems
• Building automation
• Point-of-sale terminals
• Grid infrastructure
• Industrial transportation
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THVD4421EVM (Bottom Side)
THVD4421 Evaluation Module
Description
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