Functional Configuration; Iso1540 And Iso1541 Pinout; Iso154Xevm Top Photograph - Texas Instruments ISO154 EVM Series User Manual

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1.3

Functional Configuration

The pinouts of ISO1540 and ISO1541 are displayed in
that prevents transient pulses of up to 5 ns from being passed to the output of the device.
VCC1 1
SDA1 2
3
SCL1
GND1
4
Side 1
The EVM is shown in
respectively. However, this EVM can be configured for use with two ISO1540s or two ISO1541s.
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.
SLLU166 – June 2012
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ISO1540
8 VCC2
7
SDA2
6
SCL2
5
GND2
Side 2
Figure 1. ISO1540 and ISO1541 Pinout
Figure 2, it comes with an ISO1540 and an ISO1541 installed in place of U1 and U2
Figure 2. ISO154xEVM Top Photograph
ISO154xEVM Low-Power Bidirectional I
Copyright © 2012, Texas Instruments Incorporated
Figure 1. These devices have an input noise-filter
ISO1541
VCC1 1
SDA1 2
3
SCL1
GND1 4
Side 1
2
C Isolators Evaluation Module
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8 VCC2
7
SDA2
6
SCL2
5
GND2
Side 2
3