SLLU166A June   2012  – September 2022 ISO1540 , ISO1540-Q1 , ISO1541 , ISO1541-Q1

 

  1. 1Introduction
    1. 1.1 Overview
    2. 1.2 ISO154xEVM Kit Contents
    3. 1.3 Functional Configuration
    4. 1.4 EVM Schematic
  2. 2EVM Setup and Operation
    1. 2.1 Overview
    2. 2.2 Input/Output Signal Characteristics
  3. 3Bill of Materials
  4. 4ISO154xEVM Layout
  5. 5Revision History

Functional Configuration

The pinouts of ISO1540 and ISO1541 are displayed in Figure 1-1. These devices have an input noise-filter that prevents transient pulses of up to 5 ns from being passed to the output of the device.

GUID-05ADDEB1-1712-4CA8-BFAE-D16C672AE493-low.gifFigure 1-1 ISO1540 and ISO1541 Pinout

The EVM is shown in Figure 1-2, it comes with an ISO1540 and an ISO1541 installed in place of U1 and U2 respectively. However, this EVM can be configured for use with two ISO1540s or two ISO1541s.

GUID-0159A591-16B0-4CCE-BDC9-B1FE2BB2060F-low.gifFigure 1-2 ISO154xEVM Top Photograph

An input or output pin can be tied either to supply voltage (VCCx) or Ground (GNDx) using the 4-pin jumpers on the EVM (J3A to J10A on side 1 and J3B to J10B on side 2). These jumpers also provide scope-probe access to each pin.

Each signal line (SDAx, SCLx) is configured with a 1-kΩ pull-up resistor (R1 to R8) to the corresponding power supply (VCCx). Reconfigure the value of this pull-up resistor as per the application requirement.