Data Sheet

18

Rev. 1.0, 2010-02-18

SPI Driver for Enhanced Relay Control

TLE7239SL

Power Stages

6.4

Timing Diagrams

The power transistors are switched on and off with a dedicated slope via the INX bits of the serial peripheral

interface (SPI). The switching times

t

Figure 6

Switching a Resistive Load

In input mode, a high signal at the input pin is equivalent to a SPI ON command and a low signal to SPI OFF

IN

t

SwitchOn .emf

t

20%

80%