IC Phoenix
 
Home ›  SS98 > ST75185CD-ST75185CDR-ST75185CTR,MULTIPLE RS-232 DRIVERS AND RECEIVERS
ST75185CD-ST75185CDR-ST75185CTR Fast Delivery,Good Price
Part Number:
If you need More Quantity or Better Price,Welcom Any inquiry.
We available via phone +865332716050 Email
Partno Mfg Dc Qty AvailableDescript
ST75185CTRST-PBFREEN/a2664avaiMULTIPLE RS-232 DRIVERS AND RECEIVERS
ST75185CDSTN/a32379avaiMULTIPLE RS-232 DRIVERS AND RECEIVERS
ST75185CDRSTMN/a591avaiMULTIPLE RS-232 DRIVERS AND RECEIVERS


ST75185CD ,MULTIPLE RS-232 DRIVERS AND RECEIVERSLOGIC DIAGRAMPIN DESCRIPTIONPlN N° SYMBOL NAME AND FUNCTION1V Supply Voltage (+12V)DD2 RA1 First Re ..
ST75185CDR ,MULTIPLE RS-232 DRIVERS AND RECEIVERSST75185MULTIPLE RS-232 DRIVERS AND RECEIVERS■ MEETS AND EXCEEDS THEREQUIREMENTS OF EIA/TIA-232-E AN ..
ST75185CN ,MULTIPLE RS-232 DRIVERS AND RECEIVERSABSOLUTE MAXIMUM RATINGS OVER OPERATING FREE-AIR TEMPERATURE RANGE(unless otherwise specified)Symbo ..
ST75185CPR ,MULTIPLE RS-232 DRIVERS AND RECEIVERSABSOLUTE MAXIMUM RATINGS OVER OPERATING FREE-AIR TEMPERATURE RANGESymbol Parameter Value UnitV Supp ..
ST75185CPR ,MULTIPLE RS-232 DRIVERS AND RECEIVERSELECTRICAL CHARACTERISTICS OVER OPERATING FREE-AIR TEMPERATURERANGE (V =9V,V =-9V,V = 5V, unless ot ..
ST75185CTR ,MULTIPLE RS-232 DRIVERS AND RECEIVERSELECTRICAL CHARACTERISTICS OVER OPERATING FREE-AIR TEMPERATURERANGE (V =9V,V =-9V,V = 5V, unless ot ..
STR83159 , Voltage Doubler/Bridge Rectifier Automatic Switch ICs
STR83159 , Voltage Doubler/Bridge Rectifier Automatic Switch ICs
STR84145 , LATCHED, UNIVERSAL INPUT-VOLTAGE SWITCHES
STR84145 , LATCHED, UNIVERSAL INPUT-VOLTAGE SWITCHES
STR9015 , 5-Terminal, Low Dropout Voltage Dropper Type
STR9015 , 5-Terminal, Low Dropout Voltage Dropper Type


ST75185CD-ST75185CDR-ST75185CTR
MULTIPLE RS-232 DRIVERS AND RECEIVERS
1/18December 2002 MEETS AND EXCEEDS THE
REQUIREMENTSOF EIA/TIA-232-E AND
ITUV.28 STANDARD SINGLE CHIP WITH EASY INTERFACE
BETWEEN UART AND SERIAL PORT
CONNECTOROF IBM PC/ATTM AND
COMPATIBLES DESIGNEDTO SUPPORT DATA RATESUP 120 Kbps PINOUT COMPATIBLE WITH ST75C185
DESCRIPTION

The ST75185 contains three drivers and five
receivers. The pinout matches the DB9S
connector designin orderto decrease the part
count, reducethe board space required and allow
easy interconnectionofthe UART and serial port
connectorof IBM PC/ATTM and compatibles. The
bipolar circuits and processingof the ST75185
providesa rugged low-cost solution for this
functionatthe expenseof quiescent power and
external passive components relativeto the
ST75C185.
The ST75185 complies withthe requirementsof
the EIA/TIA 232-E and ITU (formally CCITT) v.28
standards. These standards are for data
interchange betweena host computer and
peripheralat signalling ratesupto 20k-bits/s. The
switching speedsofthe ST75185are fast enough support ratesupto 120K-bits/s with lower
capacitive loads (shorter cables). Interoperabilitythe higher signalling rates cannotbe assured
unless the designer has design controlof the
cable andthe interface circuitsatthe both ends.
For interoperabilityat signalling ratesto 120
K-bits/s, useof EIA/ITA-423-B (ITU v.10) and EIA/
ITA-422-B (ITU v.11) standards are
recommended.
The ST75185is characterizedfor operation over
the rangeof 0°Cto 70°C.
ORDERING CODES
ST75185

MULTIPLE RS-232 DRIVERS AND RECEIVERS
ST75185
2/18
PIN CONNECTION IEC LOGIC SYMBOL AND LOGIC DIAGRAM
PIN DESCRIPTION
ST75185
3/18
ABSOLUTE MAXIMUM RATINGS OVER OPERATING FREE-AIR TEMPERATURE RANGE

AbsoluteMaximum Ratingsare those values beyond which damagetothe devicemay occur. Functional operation under these conditionis
not implied.
NOTE1:All voltagearewith respecttothe network ground terminal.
DISSIPATION RATING TABLE

(*)Thisisthe reverseofthe traditional junction-case thermal resistance RtJ-C
RECOMMENDED OPERATING CONDITIONS
ST75185
4/18
SUPPLY CURRENTS
DRIVER ELECTRICAL CHARACTERISTICS OVER OPERATING FREE-AIR TEMPERATURE
RANGE
(VDD =9V, VSS =-9V, VCC=5V, unless otherwise specified)
NOTE3:The algebraic convention, wherethemorepositive (lessnegative) limits designatedas maximum, isusedinthis datasheetforlogic
levelsonly(e.g.if-10Visa maximum,the typical valueisa more negative voltage).
NOTE4: Output short circuit conditions must maintainthetotal power dissipation below absolute maximum ratings.
NOTE5:Test conditionsare those specifiedby EIA-232-Eandas listed above.
ST75185
5/18
DRIVER SWITCHING CHARACTERISTICS
(VDD= 12V,VSS= -12V,VCC =5V,TA =25°C)
NOTE6: Measured between-3Vand3V pointsof output waveform (EIA-232-E conditions),all unused inputsaretied.
RECEIVER ELECTRICAL CHARACTERISTICS OVER OPERATING CONDITIONS

All typical valuesareatTA= 25°C,VCC=5V,VDD=9Vand VSS=-9V
RECEIVER SWITCHING CHARACTERISTICS
(V =12V,V =-12V,V =5VT= 25°C)
ST75185
6/18
APPLICATION CIRCUITS
Figure1:
Driver Test CircuitforVOH,I SO(H) andI SO(L)
ST75185
7/18
Figure2:
Driver Test CircuitforIIH andIIL
Figure3:
Driver Test Circuit
Figure4:
Driver Voltage Waveforms
ST75185
8/18
Figure5:
Receiver Test CircuitforIOS
Figure6:
Receiver Test Circuitfor VT,VOH,VOL
Figure7:
Receiver Test Circuit
ST75185
9/18
Figure8:
Receiver Voltage Waveforms
NOTEA:The pulse generatorhasthe following characteristics:tW= 25μs,PRR= 20KHz,ZO=50Ω,tr =tf<50ns
NOTEB:CL includes probeandjig capacitance.
Figure9:
Driver Voltage Transfer Characteristics
Figure10:
Driver Short Circuit Output Currentvs
Free-Air Temperature
Figure11:
Device Supply Currentvs
Temperature
Figure12:
Driver Output Currentvs Output
Voltage
ic,good price


TEL:86-533-2716050      FAX:86-533-2716790
   

©2020 IC PHOENIX CO.,LIMITED