DS36C278TM ,Low Power Multipoint TIA/EIA-485 TransceiverFeaturesn 100% RS-485 compliantThe DS36C278 is a low power differential bus/line trans-— Guaranteed ..
DS36C27-8TM ,Low Power Multipoint TIA/EIA-485 TransceiverDS36C278 Low Power Multipoint EIA-RS-485 TransceiverJuly 1998DS36C278Low Power Multipoint EIA-RS-48 ..
DS36C278TMX ,Low Power Multipoint TIA/EIA-485 TransceiverFeaturesn 100% RS-485 compliantThe DS36C278 is a low power differential bus/line trans-— Guaranteed ..
DS36C278TN ,Low Power Multipoint TIA/EIA-485 TransceiverDS36C278 Low Power Multipoint EIA-RS-485 TransceiverJuly 1998DS36C278Low Power Multipoint EIA-RS-48 ..
DS36C27-8TN ,Low Power Multipoint TIA/EIA-485 TransceiverFeaturesn 100% RS-485 compliantThe DS36C278 is a low power differential bus/line trans-— Guaranteed ..
DS36C279M ,Low Power TIA/EIA-485 Transceiver with Sleep Modeapplications where the device may be disabled for extendedn SOIC packagesperiods of time.n Industri ..
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
DS36C278M-DS36C278N-DS36C27-8N-DS36C278TM-DS36C27-8TM-DS36C278TMX-DS36C278TN-DS36C27-8TN
Low Power Multipoint TIA/EIA-485 Transceiver
DS36C278
Low Power Multipoint EIA-RS-485 Transceiver
General DescriptionThe DS36C278isa low power differential bus/line trans-
ceiver designedto meet the requirementsof RS-485 stan-
dardfor multipoint data transmission.In additionitis com-
patible with TIA/EIA-422-B.
The CMOS design offers significant power savings overits
bipolar and ALS counterparts without sacrificing ruggedness
against ESD damage. The deviceis idealfor usein battery
poweredor power conscious applications. ICCis specifiedat
500µA maximum.
The driver and receiver outputs feature TRI-STATE® capa-
bility. The driver outputs operate over the entire common
mode rangeof −7Vto +12V. Bus contentionor fault situa-
tions that cause excessive power dissipation within the de-
viceare handledbya thermal shutdown circuit, which forces
the driver outputs intothe high impedance state.
The receiver incorporatesafail safe circuit which guarantees high output state whenthe inputs areleft open. (Note1)
The DS36C278Tis fully specified over the industrial tem-
perature range (−40˚Cto +85˚C).
Features 100% RS-485 compliant Guaranteed RS-485 device interoperation Low power CMOS design: ICC 500µA max Built-in power up/down glitch-free circuitry Permits live transceiver insertion/displacement DIP and SOIC packages available Industrial temperature range: −40˚Cto +85˚C On-board thermal shutdown circuitry Prevents damageto the deviceinthe eventof
excessive power dissipation Wide common mode range: −7Vto +12V Receiver open input fail-safe (Note1)1⁄4 unit load (DS36C278): ≥128 nodes1⁄2 unit load (DS36C278T): ≥64 nodes ESD (human body model): ≥2kV Dropin replacementfor: LTC485, MAX485, DS75176, DS3695
Connection DiagramOrder Number DS36C278TM, DS36C278TN,
DS36C278M, DS36C278N
See NS Package Number M08Aor N08E
Truth Table
DRIVER SECTION
RE* DE DI DO/RI DO*/RI* H H L L L H X Z Z
RECEIVER SECTION
RE* DE RI-RI* RO ≥+0.2V H ≤−0.2V L X Z L OPEN (Note1) H
Note1: Non-terminated, open input only
July 1998
DS36C278
Low
Power
Multipoint
EIA-RS-485
ransceiver
