ST75C185B ,LOW POWER MULTIPLE RS-232 DRIVERS AND RECEIVERSELECTRICAL CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE(V = 12V, V =-12V, V = 5V ± 10%, unless ..
ST75C185C ,LOW POWER MULTIPLE RS-232 DRIVERS AND RECEIVERSST75C185LOW POWERMULTIPLE RS-232 DRIVERS AND RECEIVERS■ MEETS STANDARD EIA-232-E■ SINGLE CHIP WITH ..
ST75C185CD ,LOW POWER MULTIPLE RS-232 DRIVERS AND RECEIVERSELECTRICAL CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE(V = 12V, V =-12V, V = 5V ± 10%, unless ..
ST75C530 ,SUPER INTEGRATED DEVICES WITH DSP, AFE & MEMORIES FOR TELEPHONY, MODEM, FAX OVER INTERNET & POTS LINESFEATURESSingle Chip Fax Handset Mode- ITU-T V.17, V.29, V.27ter, V.21 with Fax support - Rx and Tx ..
ST75C540 ,SUPER INTEGRATED DEVICES WITH DSP, AFE & MEMORIES FOR TELEPHONY, MODEM, FAX OVER INTERNET & POTS LINESFUNCTIONAL DESCRIPTION . . . . 13V.1 SYSTEM ARCHITECTURE . . . . . . 13V.2 MODES OF OPERA ..
ST75C540FP-A ,SUPER INTEGRATED DEVICESWITH DSP, AFE & MEMORIES FORTELEPHONY,MODEM, FAXOVERINTERNET& POTSLINESFUNCTIONAL DESCRIPTION. .... ... ... .... .. .. .. .... .. .. .. .... .. .. .. ... 13V.1 SYSTEM ARC ..
STR-A6159 , Universal-Input/13 or 16 W Flyback Switching Regulators
STR-A6159 , Universal-Input/13 or 16 W Flyback Switching Regulators
STR-A6169 , Universal-Input/5 W Flyback Switching Regulator
STR-A6169 , Universal-Input/5 W Flyback Switching Regulator
STR-A6169 , Universal-Input/5 W Flyback Switching Regulator
STR-A6251 , Universal-Input/15 W 50 kHz Flyback Switching Regulators
ST75C185B-ST75C185C
LOW POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS
1/16December 2002 MEETS STANDARD EIA-232-E SINGLE CHIP WITH INTERFACE BETWEEN
UART AND SERIAL PORT CONNECTOR LESS THAN 20mW QUIESCENT POWER
CONSUMPTION WIDE DRIVER SUPPLY VOLTAGE:7TO
13.2V DRIVER OUTPUT SLEW RATE LIMITEDTO
30V/μs MAX RECEIVER INTPUT HYSTERESIS:1.1 TYP PUSH-PULL RECEIVER OUTPUTS ON CHIP RECEIVER 1μs NOISE FILTER FUNCTIONALLY INTERCHANGEABLE WITH
STM ST75185 ESD PROTECTION: ±10KV HUMAN BODY
MODEL
DESCRIPTIONThe ST75C185is ow power BICMOS device
containing three independent drivers and five
receivers thatis usedto interface data terminal
equipment (DTE) with data circuit-terminating
equipment (DCE). This device has been designed conformto Standards ANSI/EIA-232-E. The
drivers havea controlled output slew rate thatis
limitedtoa maximumof 30V/μs andthe receivers
have filters that reject input noise pulses thatare
shorter than 1μs. Both these features eliminate
the needof external components.
The ST75C185 hasn’ta power sequence fault
condition.It has been designed using low-power
techniquesina BICMOS technology. most applicationthe receivers containedin this
device will interfaceto single inputs peripheral
devices such as ACEs, UARTs or
microprocessors. By using sampling, such
peripheral devices are usually insensitivetothe
transition timesofthe input signals.If thisisnot
the case,orfor other uses,itis recommended that
the ST75C185 receiver outputsbe bufferedby
single gatesof the HCMOS, ALSor 74F logic
families.
ORDERING CODES
ST75C185LOW POWER
MULTIPLE RS-232 DRIVERS AND RECEIVERS
ST75C1852/16
PIN CONNECTION IEC LOGIC SYMBOL AND LOGIC DIAGRAM
PIN DESCRIPTION
ST75C1853/16
ABSOLUTE MAXIMUM RATINGS OVER OPERATING FREE-AIR TEMPERATURE RANGEAbsoluteMaximum Ratingsare those values beyond which damagetothe devicemay occur. Functional operation under these conditionis
not implied.
NOTE1:All voltagesarewith respecttothe network ground terminal.
RECOMMENDED OPERATING CONDITIONSNOTE2:The algebraic conversion, wherethe more positive(less negative) limits designedas maximum,isusedinthis datasheetforlogic
levelsonly, e.g.if-10Visa maximum,the typical valueisa more negative voltage.
SUPPLY CURRENTS
ST75C1854/16
DRIVER ELECTRICAL CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE(VDD= 12V, VSS =-12V, VCC=5V± 10%, 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:Not morethanone outputs shouldbe shortedatonetime.
DRIVER SWITCHING CHARACTERISTICSDD= 12V,VSS =-12V,VCC =5V,TA =25°C)
NOTE5: Measured between-3Vand3V pointsof output waveform (EIA-232-E conditions),all unused inputstied eitherhighorlow.
ST75C1855/16
RECEIVER ELECTRICAL CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE(VDD= 12V, VSS =-12V, VCC=5V± 10%, unless otherwise specified)
All typical valuesareatTA= 25°C
NOTE6: Hysteresisisthe difference betweenthe positive goinginput threshold voltage,VT+,andthe negative goinginput threshold voltage
VT-
NOTE7:Ifthe inputsareleft unconnected,the receiver interpretsthisasaninputlow,andthe receiver outputswill remaininthe highstate.
RECEIVER SWITCHING CHARACTERISTICS(VDD= 12V, VSS =-12V, VCC=5V± 10%TA= 25°C)
NOTE 8:The receiverignores anypositiveor negative goingpulsethatisless thanthe minimum valueoftW(N)and acceptsany positiveor negativegoingpulse greaterthanthe maximum oftW(N).
ST75C1856/16
APPLICATION CIRCUITS
Figure1: Driver Test CircuitforVOH,I SO(H) andI SO(L)
ST75C1857/16
Figure2: Driver Test CircuitforIIH andIIL
Figure3: Driver Test Circuit
Figure4: Driver Voltage Waveforms
ST75C1858/16
Figure5: Receiver Test CircuitforIOS
Figure6: Receiver Test Circuitfor VT,VOH,VOL
Figure7: Receiver Test Circuit
