Detailed Description of Hardware

The MAX13485E EV kit provides a proven layout for the

MAX13485E. On-board pads are included for adding

external fail-safe resistors. JU2 can be used to monitor

the A and B lines with a differential probe. A terminal

block is also included to easily connect a cable to the EV

kit board.

An electrical grid with vias and GND vias are present on

the board to enable prototyping.

MAX13485E Evaluation Kit

2

_______________________________________________________________________________________

*

Default position.

Table 1. Jumper Table (JU1, JU2, JU3)

JUMPER

SHUNT

POSITION

DESCRIPTION

Open

Does not connect the 120

Ω resistor differentially between A and B

JU1

Closed*

Connects the 120

Ω resistor differentially between A and B

Open*

R2 and R5 not connected

JU2

Closed

Connects A and B through R2 and R5 if populated for testing custom termination and common-mode

Open

Keeps DE and RE electrically separate

JU3

Closed*

Shorts DE and RE