Device Engineering carries a complete line of discrete to digital interface IC's for the avionics and industrial markets. Our entire line of discrete to digital products include DO-160D Level 3 lightning protection that saves valuable board space by avoiding the use of costly Transient Voltage Suppressor(TVS) devices.

DEI1026 - 6 Channel OPEN/GND Sense, Parallel Outputs
DEI1054 - 6 Channel 28V/OPEN Sense, Tri-State Parallel Outputs
DEI1066 - 6 Channel Programmable Threshold OPEN/GND Sense, Serial Output
DEI1067 - 6 Channel OPEN/GND Sense (ABD0100), Serial Output
DEI1160 - 8 Channel Programmable GND/Open or 28V/Open
DEI1166 - 8 Channel OPEN/GND Sense, Serial Output
DEI1282 - 8 Channel Bit Programmable Discrete Interface IC

DEI1282

FUNCTIONAL DESCRIPTION:
DEI1282 is an eight-channel discrete-to digital interface IC implemented in an HV DIMOS technology. It senses eight discrete signals of the type commonly found in avionic systems and converts them to serial logic data. Each input can be individually configured as either GND/OPEN or 28V/OPEN format input via a serial data input. 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 inputs are implemented with High Voltage technology to provide immunity to Lightning Induced transients (DO160E Level 3) without the need for additional protection components. The on-chip Built In Test (BIT) feature provides a Test Mode which provides a means to inject a test signal into each input comparator without interfering with the discrete input signals. The test coverage includes each DIN comparator as well as the digital logic and IO.

FEATURES:

• Eight discrete inputs
• Individually configurable as either GND/OPEN or 28V/OPEN (or 28V/GND) format input.
• Input threshold and hysteresis per AirBus ABD0100H specification.
• GND/OPEN mode: 4.5V/10.5V threshold, 3V hysteresis
• 28V/OPEN mode: 6V/12V threshold, 3V hysteresis
• 1mA input current to prevent dry relay contacts.
• Internal isolation diodes
• Inputs protected from Lightning Induced Transients per DO160E, Section 22, Cat A3 and B3
• Built-in test (BIT) to test internal circuits including input comparator
• Serial I/O interface to read data register and write configuration register
• Direct interface to Serial Peripheral Interface (SPI) port.
• TTL/CMOS compatible inputs and Tristate output
• 8.6 MHz Max Data Rate
• Serial input to expand Shift Register
• Logic Supply Voltage (VCC): 3.3V +/-5%
• Analog Supply Voltage (VDD): 15V +/-10%
• 16L SOIC EP package

8 Channel Programmable GND/Open or 28V/Open

General Description:
The DEI1160 is an eight-channel discrete-to-digital interface IC implemented in an HV DIMOS technology. It senses eight discrete signals of the type commonly found in avionic systems and converts them to serial logic data. Each input can be individually configured as either GND/OPEN or 28V/OPEN format input via a serial data input command. 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
• Individually configurable to sense either GND/OPEN or 28V/OPEN(or 28V/GND) discrete signals
• Hysteresis provides noise immunity
• 1ma input current to prevent dry relay contacts.
• Internal isolation diode
• Inputs protected from Lightning Induced Transients per DO160E, Section 22, Cat A3 and B3.
• Inputs protected from Power Input Abnormal Surge per DO160E, Section 16, Cat Z.
• Serial I/O interface to read data register and write configuration register
• Direct interface to Serial Peripheral Interface (SPI) port.
• TTL/CMOS compatible inputs and Tristate output
•10MHz Data Rate
• Serial input to expand Shift Register
• Logic Supply Voltage (VCC): 3.3V or 5V
• Analog Supply Voltage (VDD): 15V +/-10%
• 16L SOIC EP package

DEI1026 and DEI1026A Six Channel Discrete-to-Digital Interface Sensing Open/Ground Signals (1026A meets ABD0100 Input Levels)

General Description:
The DEI1026 and DEI1026A are six channel discrete-to-digital interface device with lightning protected inputs to handle OPEN/GND signals.The DEI1026A has been designed to meet the ABD0100 specification for input levels. The outputs are TTL/CMOS compatible and are enabled via the OE (output enable) pin. The input pins of this small, 16-pin narrow body SOIC device are lightning protected per DO160C/D waveforms 3, 4, and 5, level 3. With its reliability, low cost, operating range, and lightning protection the DEI1026 meets a large variety of interface requirements for aerospace applications.

Features:

• Senses six Open/Ground Inputs
• DEI1026A has ABD0100 compliant input levels
• Inputs are lightning protected to DO-160D Level 3
• TTL/CMOS-Compatible Tri-State Outputs
• Package / Temperature Options:
  • 16 lead .150” SOIC, -55°C /+85°C
  • 16 lead Ceramic 300mil SOP, -55°C /+125°C
• 100% Final Testing

DEI1054 Discrete to Digital Interface Sensing 28V/OPEN Signals

General Description: The DEI1054 is a six channel discrete-to-digital interface device with lightning protected inputs to sense 28 Volt/Open signals.The inverted outputs are TTL/CMOS compatible and are enabled via the OE (output enable) pin, and the CE (chip enable) pin. The input pins of this small, 16-lead narrow body SOIC device are lightning protected per DO160C/D waveforms 3, 4, and 5, level 3. With its reliability, low cost, operating range, and lightning protection, the DEI1054 meets a large variety of inter-face requirements for aerospace and industrial applications.

Features:

• Small foot print (16L SOIC NB)
• Lightning Protected Inputs per DO-160C/D
• Tri-state Outputs
• TTL/CMOS-Compatible Outputs
• Low Cost
• -55ºC to +85ºC operating temperature range.
• 100% Final testing.

DEI1054 Data Sheet   Data Sheets can be viewed with Adobe Acrobat Reader™

• Meet electrical requirements for ABD0100 and ARINC 735A GND/OPEN discrete inputs
• Hysteresis provides noise immunity
• Internal pull up resistor with 1mA source current to prevent dry relay contacts.
• Internal isolation diode
• Inputs protected from Lightning Induced Transients per DO160D, Section 22, Cat A3 and B3.