Texas Instruments ISO154 EVM Series, User Manual, Page: 6 / 20

J1
J2
U2
J3A/J4A
J5A/J6A
J3B/J4B
J5B/J6B
J7A/J8A
J9A/J10A
J7B/J8B
J9B/J10B
Power Supply
VCC1
Power Supply
VCC2
I C Transmitter
2
or
Oscilloscope
I C Transmitter
2
U1
Oscilloscope
or
EVM Setup and Operation
www.ti.com
2 EVM Setup and Operation
This section includes the setup and operation of the EVM for parameter performance evaluation. Typical
input and output waveforms are included.
2.1 Overview
The basic setup in Figure 4 has the two power supplies required to evaluate isolator performance with any
combination of 3.3 V or 5 V on either side. If both sides are evaluated at the same supply voltage, only
one power supply is required and can be used to power both sides of the EVM.
CAUTION
Note that this EVM is for operating parameter performance evaluation only and
not designed for isolation voltage testing. Any voltage applied above the 5.5-V
maximum recommended operating voltage of the isolators may damage the
EVM.
Please note that if the ISO1541 is used, providing an input signal on the SCL2 pin does not yield any
output on SCL1, SCL1 remains pulled up to VCC1.
Figure 4. Basic EVM Operation
6 SLLU166 – June 2012
ISO154xEVM Low-Power Bidirectional I
2
C Isolators Evaluation Module
Submit Documentation Feedback
Copyright © 2012, Texas Instruments Incorporated