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DS36277TN ,Dominant Mode Multipoint TransceiverDS36277 Dominant Mode Multipoint TransceiverFebruary 2002DS36277Dominant Mode Multipoint Transceiver
DS3628N ,Octal TRI-STATE MOS DriversDS1628/DS3628OctalTRI-STATEMOSDriversFebruary1986DS1628/DS3628OctalTRI-STATE MOSDriversÉGeneralDesc ..
DS3631 ,CMOS Dual Peripheral DriverDS1631/DS3631/DS1632/DS3632/DS1633/DS3633/DS1634/DS3634CMOSDualPeripheralDriversJuly1992DS1631/DS36 ..
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EC103D1 ,SCR
EC103D1 ,SCR
EC103D1 ,SCR
EC2-12NU ,COMPACT AND LIGHTWEIGHT, SMALL MOUNTING SIZE, HIGH BREAKDOWN VOLTAGE
EC2-24 ,COMPACT AND LIGHTWEIGHT, SMALL MOUNTING SIZE, HIGH BREAKDOWN VOLTAGE
EC2-24NU ,COMPACT AND LIGHTWEIGHT, SMALL MOUNTING SIZE, HIGH BREAKDOWN VOLTAGE
DS36277TM-DS36277TMX-DS36277TN
Dominant Mode Multipoint Transceiver
DS36277
Dominant Mode Multipoint Transceiver
General DescriptionThe DS36277 Dominant Mode Multipoint Transceiveris de-
signedfor useon bi-directional differential busses.Itis opti-
malfor useon Interfaces that utilize Societyof Automotive
Engineers (SAE) J1708 Electrical Standard.
The deviceis similarto standard TIA/EIA-485 transceivers,
but differsin enabling scheme. The Driver’s Inputis normally
externally tied LOW, thus providing only two states: Active
(LOW),or Disabled (OFF). When the driveris active, the
dominant modeis LOW, conversely, whenthe driveris dis-
abled,the busis pulled HIGHby external bias resistors.
The receiver providesa FAILSAFE feature that guaranteesa
known output state when the Interfaceisin the following
conditions: Floating Line, Idle Line (no active drivers), and
Line Fault Conditions (openor short). The receiver outputis
HIGHforthe following conditions: Open Inputs, Terminated
Inputs (50Ω),or Shorted Inputs. FAILSAFEisa highly desir-
able feature when the transceivers are used with Asynchro-
nous Controllers suchas UARTs.
Features FAILSAFE receiver, RO= HIGHfor: OPEN inputs Terminated inputs SHORTED inputs Optimalfor usein SAE J1708 Interfaces Compatible with popular interface standards: TIA/EIA-485 and TIA/EIA-422-A CCITT recommendation V.11 Bi-directional transceiver Designedfor multipoint transmission Wide bus common mode range (−7Vto +12V) Availablein plastic DIP and SOIC packages
Connection and Logic DiagramOrder Number DS36277TMor DS36277TN
SeeNS Package Number M08Aor N08E
Truth Tables
Driver
Inputs Outputs DI DO/RI DO/RI L H H L Z Z
Receiver
Inputs Output DO/RI–DO/RI RO ≥ 0mV H ≤ −500 mV L SHORTED H OPEN H Z
February 2002
DS36277
Dominant
Mode
Multipoint
ransceiver
