TIDA-01090 Reference Design

Texas Instruments

RS-485 Automatic Direction Control Reference Design

Description

The TIDA-01090 reference design enables half-duplex communication over an RS-485 bus without requiring additional driver-enable/receiver-enable controls.  The design allows for the transceiver used on each node to go into transmit mode automatically when data is being transmitted from a local Microcontroller (MCU) or Universal Asynchronous Receiver/Transmitter (UART) and then transition back into receive mode once the data frame is complete.

Features
  • Automatically enables an RS-485 driver when data is output from an MCU or UARTTransitions RS-485 transceiver into receive mode when data is not being transmittedWorks with any RS-485 transceiverLow-cost due to minimal number of componentsAdjustable data frame length via passive component selection
Applications
  • String inverter
  • Weigh scale
  • Analog security camera
  • Video recorder (NVR
  • DVR
  • etc.)
  • Glass break detector
  • Motion detector (PIR
  • uWave
  • etc.)
  • Calling button operating panel
  • Intrusion HMI keypad
  • Video doorbell
  • Micro inverter
  • HVAC gateway
  • Thermostat
  • HVAC large commercial system controller
  • Semiconductor manufacturing
  • Automotive test equipment
  • Fire alarm control panel (FACP)
  • Door keypad & reader
  • Intrusion control panel
  • AC charging (pile) station
  • Central inverter
  • DC charging (pile) station
  • Multifunction relay
  • Solar arc protection
  • Smart combiner box
  • Cellular module asset tracking
  • Elevator main control panel
  • Digital alarm communicator
  • Remote annunciator
  • Source measurement unit (SMU)
  • DC power supply
  • AC source
  • electronic load
Product Categories
  • Interface

End Equipment Reference Diagrams

Application Area End Equipment
Thermal imaging camera http://www.ti.com/solution/thermal_imaging_camera#referencedesigns
EV charging station HMI module http://www.ti.com/solution/ev_charging_station_hmi_module#referencedesigns
Fire alarm control panel (FACP) http://www.ti.com/solution/fire-alarm_control_panels_annunciators#referencedesigns
Intrusion control panel http://www.ti.com/solution/intrusion_panel#referencedesigns
Source measurement unit (SMU) http://www.ti.com/solution/source-measurement-unit-smu#referencedesigns
AC analog input module http://www.ti.com/solution/ac-analog-input-module#referencedesigns
Analog security camera http://www.ti.com/solution/camera_surveillance_analog#referencedesigns
Solar arc protection http://www.ti.com/solution/solar_energy_arc_protection#referencedesigns
Cellular module asset tracking http://www.ti.com/solution/cellular_module_asset_tracking#referencedesigns
Semiconductor manufacturing http://www.ti.com/solution/semiconductor-manufacturing-test-equipment#referencedesigns
EV charging station power module http://www.ti.com/solution/ev_charging_station_power_module#referencedesigns
DC analog input/output module http://www.ti.com/solution/dc-analog-input-output-module#referencedesigns
DC power supply http://www.ti.com/solution/source_generation__ac_dc_power_sources#referencedesigns
AC source http://www.ti.com/solution/solar-micro-inverter-diagram#referencedesigns
electronic load http://www.ti.com/solution/iot_gateway#referencedesigns
Micro inverter http://www.ti.com/solution/solar_power_inverters#referencedesigns
HVAC gateway http://www.ti.com/solution/digital_alarm_communicator#referencedesigns
String inverter http://www.ti.com/solution/hvac_valve_and_actuator_control#referencedesigns
Digital alarm communicator http://www.ti.com/solution/ev_infrastructure_level_3_evse#referencedesigns
HVAC valve & actuator control http://www.ti.com/solution/building_security_gateway#referencedesigns
DC charging (pile) station http://www.ti.com/solution/renewables_ev_charging#referencedesigns
Building security gateway http://www.ti.com/solution/automotive-test-equipment#referencedesigns
AC charging (pile) station http://www.ti.com/solution/elevators_escalators_elevator_main_control_panel#referencedesigns
Automotive test equipment http://www.ti.com/solution/solar_energy_smart_combiner_box#referencedesigns
Elevator main control panel http://www.ti.com/solution/remote_annunciator#referencedesigns
Smart combiner box http://www.ti.com/solution/motion-detector-pir-uwave#referencedesigns
Remote annunciator http://www.ti.com/solution/in_home_display#referencedesigns
Motion detector (PIR http://www.ti.com/solution/battery_test_equipment#referencedesigns
uWave http://www.ti.com/solution/video_doorbell_baby_monitor#referencedesigns
etc.) http://www.ti.com/solution/thermostat#referencedesigns
Intrusion HMI keypad http://www.ti.com/solution/dvr_and_dvs#referencedesigns
Battery test equipment http://www.ti.com/solution/access_keypads_biometrics#referencedesigns
Video doorbell http://www.ti.com/solution/central-inverter#referencedesigns
Thermostat http://www.ti.com/solution/weigh_scale#referencedesigns
Video recorder (NVR http://www.ti.com/solution/zone-controllers#referencedesigns
DVR http://www.ti.com/solution/temperature_controller#referencedesigns
etc.) http://www.ti.com/solution/rail_sensing_monitoring_systems#referencedesigns
Door keypad & reader http://www.ti.com/solution/elevator_escalator#referencedesigns
Central inverter http://www.ti.com/solution/glass_break_detector#referencedesigns

Parts

Part Number Name Companion Part
NA555 NA555 Datasheet
SN65HVD3082E SN65HVD3082E Buy Datasheet

Bill Of Materials

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Schematic

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Download the schematic for TIDA-01090

Test Data

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Other Documents

Title Updated Type Size (KB)
TIDA-01090 Gerber 21 Jun 2016 ZIP 0
TIDA-01090 CAD Files 21 Jun 2016 ZIP 298
TIDA-01090 PCB 21 Jun 2016 PDF 421
TIDA-01090 Assembly Drawing 21 Jun 2016 PDF 70
TIDA-01090 BOM 21 Jun 2016 PDF 96
TIDA-01090 Schematic 21 Jun 2016 PDF 54