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DNR-DIO-404
DNR-DIO-404
12-In/12-Out (current source) digital I/O board for the PowerDNR RACKtangle®
 
The DNR-DIO-404 is a 24-channel digital I/O interface with a number of unique features: as many as 24 DIO lines 350 V RMS isolated as a group, pre-configured with 12 inputs and 12 outputs, powerful user-programmable hysteresis that improves noise immunity of the digital input signals. Ultra-wide voltage range of 3.3 to 36 VDC (When powered from user-provided power source). The DNR-DIO-404 layer is capable of continuously driving up 350 mA of current per channel from all outputs, and provides readings on all inputs with available change-of-state detection.
 
Characteristics:
  • 12 digital inputs; 12 digital outputs (source)
  • Wide voltage input range: 3.3v to 36V
  • User-programmable hysteresis
  • I/O throughput rate of 100kS/sec
  • Drive capacity: 350mA/channel continuous; 500mA maximum peak
  • Requires external 3.3-36V (24V nominal) power source or can be powered internally using the DNA-PC-912 power conversion layer
 
Technical Specifications
Parameters
Digital Lines 12 inputs; 12 outputs (source)
Logic Level 3.3-36V; rated for 3.3V, 5V, 12V, 24V, 36V
Input Current 360µA max
Input FIFO 512 samples
Input Protection ±40V over/under voltage, 3 kV ESD
Default Hysteresis Values Lower Limit: 0; Upper Limit: 300
Input High Voltage:
(with default hysteresis)		 @3.3V @5V @12V @24V @36V
1.6V 2.7V 7.5V 12V 17V
Input Low Voltage:
(with default hysteresis)		 @3.3V @5V @12V @24V @36V
1.5V 1.8V 2.0V 3.0V 12.5V
Output Drive Capacity continuous: 350mA per channel
maximum peak: 500mA per channel
Output FIFO 1024 samples
Output High Voltage: 3.3V at 10Ω load 3.1V
5V at 18Ω load 4.5V
24V at 66Ω load 23.4V
36V at 100Ω load 35.4V
Output Low Voltage Floating when driven with Logic “0“
Output Protection 500mA resettable PTC fuse
I/O Throughput Rate 100kHz max
Power Requirements
(VCC)		 3.3-36V (24V nominal) - external source
or DNA-PC-902 internally
Power Consumption 0.7W (no load) @ 3.3V VCC;
1.8W (no load) @ 36V VCC;
~ 0.22W/per output channel at 350mA load
Physical Dimensions 3.875” x 3.875” (98 x 98 mm)
Operating Temp. Range Tested -40 to +85 °C
Operating Humidity 0 - 95%, non-condensing
Isolation 350Vrms