Cable Invert Function Allows Correction for Reversed Bus Pins
Common-Mode Voltage Range (-20 V to 25 V) More Than Doubles TIA/EIA 485 Requirement
Bus I/O Protection
±16 kV JEDEC HBM Protection
Reduced Unit Load for Up to 256 Nodes
Failsafe Receiver for Open-Circuit, Short-Circuit and Idle-Bus Conditions
Low Power Consumption
ICC 5 mA Quiescent During Operation
Power-Up, Power-Down Glitch-Free Operation
APPLICATIONS
Designed for RS-485 and RS-422 Networks
Description
These devices are designed to survive overvoltage faults such as direct shorts to power supplies, mis-wiring faults, connector failures, cable crushes, and tool mis-applications. They are also robust to ESD events, with high levels of protection to human-body model specifications.
These devices combine a differential driver and a differential receiver, which operate from a single power supply. The driver differential outputs and the receiver differential inputs are connected internally to for a bus port suitable for half-duplex (two-wire bus) communication. A cable invert pin (INV) allows active correction of mis-wires that may occur during installation. Upon detecting communication errors, the user can apply a logic HIGH to the INV pin, effectively inverting the polarity of the differential bus port, thereby correcting for the reversed bus wires.
* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.
Inventory
Reported Distributor Inventory as of 11:20 AM GMT, 20 Nov 2009
** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.
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