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MT72038
FOUR CHANNEL ARINC 429 LINE RECEIVER
• Converts received ARINC 429 data levels to
2 line CMOS compatible levels
• Adjustable threshold using 1 resistor
• Single 5V supply with low power
consumption < 50mW
• Full MIL operating range
• Reduces system package count.
• Can be used as ARINC 429, 561, 568, 575,
or Tacan interface
VLSI COMPONENTS FOR ARINC 429 DATA TRANSMISSION SYSTEMS
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MT72038
MAXIMUM RATINGS (Above which the useful life may be impaired)
Storage Temperature - 65ºC to +150ºC
Temperature (Ambient) under Bias - 55ºC to +125ºC
Supply Voltage VDD -0.3V to + 7V
DC Input Voltage -0.3 to VDD +0.3V
Output Current (Single O/P) 10mA
Output Current (Total O/P) 20mA
ELECTRICAL CHARACTERISTICS over operating range
PARAMETER DESCRIPTION TEST CONDITIONS MIN TYP MAX UNITS
IOH Output High Current VOH=2.8V VDD= 4.5V 80
IOL Output Low Current VOL=0.4V 1
VIH Input High Voltage NOTE 1 -6.5 VCC
VIL Input Low Voltage NOTE 1 -2.5 0.8
CI Input Capacitance
CI/O I/O Capacitance 7 40
IDD Supply Current
Test Frequency = 1.0 MHZ
VDD = MAX. All inputs
LOW, All outputs open.
2 40
10 2.6
mA
mA
Volts
Volts
pF
pF
mA
NOTE 1 Voltage applied to inputs of recommended circuit.
APPLICATION NOTE
The circuit below may be used to interface with a single channel of ARINC 561/568.
VLSI COMPONENTS FOR ARINC 429 DATA TRANSMISSION SYSTEMS
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MT72038
This device together with associated resistors meets the I/P requirements of ARINC 429
specification for 4 independent channels of input. It consists of 4 pairs of Norton type CMOS
comparators with a common current mirror threshold circuit set by a single external resistor.
Each pair of comparators requires a 15K resistor across the ARINC I/P and 43K between each
ARINC single line and the low impedance inputs. High common mode rejection is achieved so that
if one input wire is removed from the Receiver Circuit, there is no output signal.
Internal clamping diodes are present providing full protection from external transients of > 600V for
luS or 100V continuous at the 43K to ARINC interface.
The package operates from a single 5V supply taking typically a total of 10mA over the full MIL
temperature range.
RECOMMENDED CIRCUIT
VLSI COMPONENTS FOR ARINC 429 DATA TRANSMISSION SYSTEMS
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Pin Compatible replacement for MT60005 and MT60009
NOTE : THRESHOLD RESISTOR VALUE CHANGE IN REPLACEMENT.
MT72038
VLSI COMPONENTS FOR ARINC 429 DATA TRANSMISSION SYSTEMS
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