User's Guide
SLLU122A – April 2010 – Revised July 2010
ISO1176T/35T/3086T Evaluation Module
This document describes the ISO1176T/35T/3086T Evaluation Module (EVM). It is used to evaluate the
ISO1176T PROFIBUS™ Transceiver, the ISO35T RS-485 Transceiver, or the ISO3086T RS-485
Transceiver. Because the devices are similar transceivers, and the printed-circuit board is the same for all
three EVMs, this manual can be used for all three devices.
The EVM can be used to evaluate device parameters while acting as a guide for board layout. The board
allows for the connection of 50-
Ω
coaxial cables via QuietZone connectors. It also provides easy
connection points for oscilloscope probes. Banana jacks are provided for connection of a dc power supply.
These features provide the designer with a tool for evaluation and the successful design of an
end-product.
Contents
1
Overview
.....................................................................................................................
2
2
Recommended Equipment
................................................................................................
8
List of Figures
1
ISO1176T Device Pinout and Block Diagram
...........................................................................
3
2
ISO35T Device Pinout and Block Diagram
..............................................................................
3
3
ISO3086T Device Pinout and Block Diagram
...........................................................................
3
4
ISO1176T/35T/3086TEVM Board
.........................................................................................
5
5
Point-to-Point Simplex Circuit
.............................................................................................
6
6
Parallel Terminated Simplex Circuit
......................................................................................
6
7
Five-Node Multipoint Circuit
...............................................................................................
7
8
Two-Node Multipoint Circuit
...............................................................................................
7
9
EVM Configuration for Inducing a Ground Potential Difference Voltage Between Nodes
........................
8
10
PCB Top Layer
............................................................................................................
12
11
Silk Screen – Top Side
...................................................................................................
13
12
Signal Traces – Bottom Layer
...........................................................................................
14
13
Silkscreen – Bottom Layer
...............................................................................................
15
List of Tables
1
EVM Configuration Options for ISO1176T
...............................................................................
8
2
EVM Configuration Options for ISO35T and ISO3086T
...............................................................
9
3
ISO1176TEVM Bill of Material
...........................................................................................
10
4
ISO35TEVM Bill of Materials
.............................................................................................
11
5
ISO3086TEVM Bill of Materials
..........................................................................................
11
1
SLLU122A – April 2010 – Revised July 2010
ISO1176T/35T/3086T Evaluation Module
Copyright © 2010, Texas Instruments Incorporated
