General Description

The MAX33047E/MAX33048E/MAX33049E are ±40kV

ESD-protected full-duplex RS-485/RS-422 transceivers

that operate from 3.0V to 5.5V and provide design

flexibility for robust communication of up to 20Mbps.

These transceivers are optimized for robust

communication in harsh industrial environments. They

include integrated hot-swap protection and a true failsafe

receiver, ensuring a logic-high output on the

receiver when input signals are either shorted or open.

The driver outputs/receiver inputs are protected against

faults up to ±25V and can withstand ESD of up to ±15kV

for air-gap discharge and ±10kV for contact discharge

as per IEC 61000-4-2. The driver outputs are protected

against short circuits and integrated thermal shutdown

circuitry places the driver outputs into a high-impedance

state during thermal overload events.

The MAX33047E/MAX33048E are available in an 8-pin

SOIC package and the MAX33049E is available in a 14-

pin SOIC package. These transceivers operate within a

temperature range of -40°C to +125°.

Applications

• Programmable Logic Controller (PLC)

• Factory Automation Equipment

• Industrial Control Systems

Benefits and Features

• Integrated Protection Ensures Robust

Communication

• ±25V Fault Protection Range on Driver

Outputs/Receiver Inputs

• High ESD Protection

- ±40kV Human Body Model (HBM) ESD

- ±15kV Air-Gap ESD as per IEC 61000-4-2

- ±10kV Contact ESD as per IEC 61000-4-2

• Short-Circuit Protected Outputs

• True Fail-Safe Receiver

• Hot-Swap Capability (MAX33049E)

• Flexibility for Many Different Applications

• 3.0V to 5.5V Supply Range

• Up to 500kbps Data Rates (MAX33047E)

• Up to 20Mbps Data Rate

(MAX33048E/MAX33049E)

• Available in 8-Pin and 14-Pin SOIC Packages

• Enables up to 256 Nodes on the Bus

• Wide -40°C to +125°C Operating Temperature