company blog about Maxim MAX13444EASA Fail-Safe RS-485/J1708 Transceivers

Maxim MAX13444EASA Fail-Safe RS-485/J1708 Transceivers

Product Description Of MAX13444EASA

MAX13444EASA is fault-protected RS-485 and J1708 transceivers that feature ±80V protection from signal faults on communication bus lines. The MAX13444EASA feature a reduced slew-rate driver that minimizes EMI and reflections, allowing error-free transmission up to 250kbps. The MAX13444EASA driver can transmit up to 10Mbps. The high-speed MAX13444EASA RS-485 tranceiver features ±60V protection from signal faults on communication bus lines. These transceivers feature foldback current limit. Each device contains one differential line driver with three-state output and one differential line receiver with three-state input. The 1/4-unit-load receiver input impedance allows up to 128 transceivers on a single bus. The devices operate from a 5V supply. True fail-safe inputs guarantee a logic-high receiver output when the receiver inputs are open, shorted, or connected to an idle data line.

Hot-swap circuitry eliminates false transitions on the data bus during circuit initialization or connection to a live backplane. Short-circuit current-limiting and thermal-shutdown circuitry protect the driver against excessive power dissipation, and on-chip ±15kV ESD protection eliminates costly external protection devices.

The MAX13444EASA is available in an 8-pin SO package and are specified over the automotive temperature range.

Specifications Of MAX13444EASA
Data Rate:250 kb/s
Number of Drivers:1 Driver
Number of Receivers:1 Receiver
Duplex:Half Duplex
Supply Voltage - Max:5.25 V
Supply Voltage - Min:4.75 V
Operating Supply Current:30 mA
Minimum Operating Temperature:- 40 C
Maximum Operating Temperature:+ 125 C
ESD Protection:15 kV

Feature Of MAX13444EASA
±15kV ESD Protection
±80V Fault Protection
Guaranteed 10Mbps Data Rate
Hot-Swappable for Telecom Applications
True Fail-Safe Receiver Inputs
Enhanced Slew-Rate-Limiting Facilitates Error-Free Data Transmission
Allow Up to 128 Transceivers on the Bus
-7V to +12V Common-Mode Input Range
±6mA FoldBack Current Limit
Industry-Standard Pinout

Applications Of MAX13444EASA
Automotive Applications
HVAC Controls
Industrial Networks
RS-422/RS-485 Communications
Telecommunications Systems
Truck and Trailer Applications

Pin Configurations and Typical Operating Circuits