Impulse SIO4-104.2+2 (3544) - Manual (Page 14)

© Sealevel Systems, Inc. - 12 - SIO4-104.2+2 User Manual
Electrical Characteristics
Specifications
RS-232 Receiver Inputs
• Voltage Range: ±15V
• Input Threshold Low: 0.8V Min, 1.5V Typical
• Input Threshold High: 2.4V Max, 1.8V Typical
RS-232 Driver Outputs
• Output Voltage Swing: ±5V Min, ±5.4V Typical @ 3K Ohm Load
• Short-circuit current: ±60mA Max, ±35mA Typical @ V
OUT
= 0V
RS-422/485 Transceiver
• Bidirectional Transceiver
• Meet or Exceed the Requirements of ANSI Standards TIA/EIA-422-B and TIA/EIA-485-A and
ITU Recommendations V.11 and X.27
• Designed for Multipoint Transmission on Long Bus Lines in Noisy Environments
• 3-State Driver and Receiver Outputs
• Individual Driver and Receiver Enables
• Wide Positive and Negative Input/Output Bus Voltage Ranges
• Driver Output Capability . . . ±60 mA Max
• Thermal Shutdown Protection
• Driver Positive and Negative Current Limiting
• Receiver Input Impedance . . . 12 k Min
• Receiver Input Sensitivity . . . ±200 mV
• Receiver Input Hysteresis . . . 50 mV Typical
• Operate From Single 5-V Supply
Temperature Range
• Operating:
-0°C – 70°C
• Storage:
-50°C – 105°C
Power Requirements
• +5VDC @ 794mA
Physical Dimensions
• Length: 3.550 inches (9.017cm)
• Height: 3.775 inches (9.589cm)