driven by contact monitor (4 x GND and 4 x VBAT, parallel interface) E100.12 Features General Description ˘ ˘ ˘ ˘ ˘ The IC is developed for automotive applications. It continuously monitors the status of two groups of switch contacts connected to supply or ground at inputs IN7-4 or IN3-0, respectively. The input currents are compared to an internal reference. ˘ ˘ Supply voltage range VS 5.25V to 25V Logic supply voltage range VDD 4.75V to 5.25V Low standby current (ENB=1) IVS < 20µA Contact status monitoring by comparing the switch resistance to an internal reference High noise immunity Operating temperature range – 40°C to + 125 ºC SOIC 20 package If the switch resistance is less than 2.5kÝ the IC will switch into an active state low at the outputs and if the resistance is above 10kÝ the outputs will switch to high state, with a series resistance assumed to be connected between input INn and the switch for current limitation in case of over or under voltage. Applications Automotive and industrial electronics Monitor for mechanical switches ˘ Monitor for voltage levels ˘ ˘ The input current sources and the tri-state driver outputs are activated by the enable pin ENB (active low). The tri-state outputs allow a bus configuration of several ICs in parallel. VBAT VS VDD VDD CH7 CH4 Ref. OUT7 EN IN7 OUT6 IN6 OUT5 IN5 OUT4 ENB IN4 External µC CH3 CH0 VS EN IN3 IN2 IN1 OUT3 Ref. OUT2 OUT1 IN0 OUT0 E100.12 ELMOS Semiconductor AG Info Sheet QM-No.: 25IS0042E.00 2009-09-29 ELMOS Semiconductor AG – Headquarters Heinrich-Hertz-Str. 1 | 44227 Dortmund | Germany Phone + 49 (0) 231 - 75 49 - 100 | Fax + 49 (0) 231 - 75 49 - 149 firstname.lastname@example.org | www.elmos.de Note ELMOS Semiconductor AG (below ELMOS) reserves the right to make changes to the product contained in this publication without notice. ELMOS assumes no responsibility for the use of any circuits described herein, conveys no licence under any patent or other right, and makes no representation that the circuits are free of patent infringement. While the information in this publication has been checked, no responsibility, however, is assumed for inaccuracies. ELMOS does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of a life-support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications. Copyright © 2009 ELMOS Reproduction, in part or whole, without the prior written consent of ELMOS, is prohibited.