Multipoint RS485/RS422 Transceivers
DS3695A/DS3695AT/DS3696A Multipoint RS485/RS422 Transceivers
February 1996
DS3695A/DS3695AT/DS3696A Multipoint RS485/R...
Description
DS3695A/DS3695AT/DS3696A Multipoint RS485/RS422 Transceivers
February 1996
DS3695A/DS3695AT/DS3696A Multipoint RS485/RS422 Transceivers
General Description
The DS3695A and DS3696A are high speed differential TRI-STATE® bus/line transceivers designed to meet the requirements of EIA standard RS485 with extended common mode range (+12V to −7V), for multipoint data transmission. In addition they are compatible with requirements of RS-422.
The driver and receiver outputs feature TRI-STATE capability. The driver outputs remain in TRI-STATE over the entire common mode range of +12V to −7V. Bus faults that cause excessive power dissipation within the device trigger a thermal shutdown circuit, which forces the driver outputs into the high impedance state. The DS3696A provides an output pin (TS) which reports the thermal shutdown of the device. TS is an “open collector” pin with an internal 10 kΩ pull-up resistor. This allows the TS outputs of several devices to be wire OR-ed.
Both...
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