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DEI1188-SES
DEI1188 is an eight-channel discrete-to-digital interface IC implemented in an HV DIMOS technology. It senses eight GND/OPEN discrete signals of the type commonly found in avionic systems and converts them to serial logic data. The discrete data is read from the device via an eight-bit serial shift register with 3-state output. This serial interface is compatible with the industry standard Serial Peripheral Interface (SPI) bus.
Features
- Eight discrete inputs
- Senses GND/OPEN discrete signals.
- Meet input threshold and hysteresis requirements specified per Airbus ABD0100H specification.
- Thresholds: 4.5 V / 10.5 V, Hysteresis: 3V
- 1 mA input current to prevent dry relay contacts.
- Internal isolation diode.
- Uses external series 3 kΩ resistors on inputs to implement lightning transient immunity of DO160, Section 22 Level 3, and higher levels with the addition of small TVS devices.
- Inputs protected from Lightning Induced Transients per DO160E, Section 22, Cat A3 and B3 plus waveform 5A to 500 V.
- Serial I/O interface to read data register
- Direct interface to Serial Peripheral Interface (SPI) port.
- TTL/CMOS compatible inputs and Tristate output
- 10 MHZ Max Data Rate
- Serial input to expand Shift Register
- Pin compatible with DEI1066
- Logic Supply Voltage (VCC): 3.3 V +/-5%
- Analog Supply Voltage (VDD): 12.0 V to 16.5 V
- 16L SOIC EP package
Attributes
temp range: -55°C - 85°C
product package type: 16 SOIC EP NB
burn in:
channels: 8
lightning protection:
Years to EOL: 10
tri state outputs:
Analog PSU: 12-16.5
Digital PSU: 3.3
ABD0100:
discrete input: OPEN/GND
output type: Serial
package description: 16 Pin Plastic SOIC - .150 Body Exp Pad
package type: Surface Mount
JEDEC: MS-012-AC
RoHS:
Product Status: Active
PCN Links:CN-MW-01188-01-A.pdfCN-MW-01188-02-A.pdf
Functional Description DEI1188 is an eight-channel discrete-to-digital interface IC implemented in an HV DIMOS technology. It senses eight GND/OPEN discrete signals of the type commonly found in avionic systems and converts them to serial logic data. The discrete data is read from the device via an eight-bit serial shift register with 3-state output. This serial interface is compatible with the industry standard Serial Peripheral Interface (SPI) bus.The discrete input circuits are designed to achieve a high level of lightning transient immunity. The application design provides a series 3 kΩ resistor on each discrete input to achieve DO160E Level 3 and WF5A 500 V immunity. Higher immunity levels can be achieved (i.e. Level 5) with the addition of a TVS between the resistor and the input pin.
