DEI1188

Device Engineering Incorporated 385 East Alamo Drive Chandler, AZ 85225 Phone: (480) 303-0822 Fax: (480) 303-0824 E-mail: [email protected] DEI1188 8CH GND/OPEN DISCRETE INTERFACE IC W/ EXT HV PROTECTION FEATURES Eight discrete inputs o Senses GND/OPEN discrete signals. o Meet input threshold and hysteresis requirements specified per AirBus ABD0100H specification. ƒ Thresholds: 4.5V/10.5V, Hysteresis: 3V o 1mA input current to prevent dry relay contacts. o Internal isolation diode. o Uses external series 3Kohm resistors on inputs to implement lightning transient immunity of 1600V and higher. i.e.: DO160E, Section 22, Levels 4 and 5. o Inputs protected from Lightning Induced Transients per DO160E, Section 22, Cat A3 and B3 plus waveform 5A to 500V. Serial I/O interface to read data register o Direct interface to Serial Peripheral Interface (SPI) port. o TTL/CMOS compatible inputs and Tristate output o 10MHz Max Data Rate o Serial input to expand Shift Register Pin compatible with DEI1066 Logic Supply Voltage (VCC): 3.3V +/-5% Analog Supply Voltage (VDD): 12.0V to 16.5V 16L SOIC EP package PIN ASSIGNMENTS DIN1 DIN2 DIN3 DIN4 DIN5 DIN6 DIN7 DIN8 1 DEI1188 16 VDD GND VCC GND SDI /CS SCLK SDO Figure 1 DEI1188 Pin Assignment (16 Lead SOIC) ©2009 Device Engineering Inc. 1 of 12 DS-MW-01188-01 Rev. D 07/21/2009 FUNCTIONAL DESCRIPTION DEI1188 is an eight-channel discrete-to-digital interface IC implemented in an HV DIMOS technology. It senses...