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ST3222BSTN/a12728avai3 TO 3.6V, LOW POWER, UP TO 400 KBPS RS-232 DRIVERS AND RECEIVERS
ST3222CSTN/a16avai3 TO 3.6V, LOW POWER, UP TO 400 KBPS RS-232 DRIVERS AND RECEIVERS


ST3222B ,3 TO 3.6V, LOW POWER, UP TO 400 KBPS RS-232 DRIVERS AND RECEIVERSapplications are Notebook, Subnotebookonly 1μA supply current.and Palmtop Computers, Battery Powere ..
ST3222BD ,3 TO 3.6V, LOW POWER, UP TO 400 KBPS RS-232 DRIVERS AND RECEIVERSPIN CONFIGURATIONSO-18 TSSOP20PIN DESCRIPTIONPlN N° (SO-18) PlN N° (TSSP20) SYMBOL NAME AND FUNCTIO ..
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ST3222BTR ,3 TO 3.6V, LOW POWER, UP TO 400 KBPS RS-232 DRIVERS AND RECEIVERSELECTRICAL CHARACTERISTICS(C -C =0.1μFV =3V to3.6V,T = -40 to 85°C, unless otherwise specified.1 4 ..
ST3222C ,3 TO 3.6V, LOW POWER, UP TO 400 KBPS RS-232 DRIVERS AND RECEIVERSPIN CONFIGURATIONSO-18 TSSOP20PIN DESCRIPTIONPlN N° (SO-18) PlN N° (TSSP20) SYMBOL NAME AND FUNCTIO ..
ST3222CTR ,3 TO 3.6V, LOW POWER, UP TO 400 KBPS RS-232 DRIVERS AND RECEIVERSapplications are Notebook, Subnotebookonly 1μA supply current.and Palmtop Computers, Battery Powere ..
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STM32F103T8U6 ,Mainstream Performance line, ARM Cortex-M3 MCU with 64 Kbytes Flash, 72 MHz CPU, motor control, USB and CANThermal characteristics . . . . . . 936.2.1 Reference document . . . . . . . 936.2.2 Selec ..
STM32F103T8U7 ,Mainstream Performance line, ARM Cortex-M3 MCU with 64 Kbytes Flash, 72 MHz CPU, motor control, USB and CANFeatures ARM 32-bit Cortex™-M3 CPU Core – 72 MHz maximum frequency,VFQFPN36 6 × 6 mm UFQFPN48 7 × ..
STM32F103V8T6 ,Mainstream Performance line, ARM Cortex-M3 MCU with 64 Kbytes Flash, 72 MHz CPU, motor control, USB and CANElectrical characteristics . . . . 355.1 Parameter conditions 355.1.1 Minimum and maximum ..


ST3222B-ST3222C
3 TO 3.6V, LOW POWER, UP TO 400 KBPS RS-232 DRIVERS AND RECEIVERS
1/9October 2002 300μA SUPPLY CURRENT 250Kbps MINIMUM GUARENTEED DATA
RATE 6V/μs MINIMUM GUARANTEED SLEW RATE MEET EIA/TIA-232 SPECIFICATIONS DOWN 3V AVAILABLE INSO-18 ANDTSSOP20
DESCRIPTION

The ST3222isa 3V powered EIA/TIA-232 and
V.28/V.24 communications interface with low
power requirements and high data-rate
capabilities. ST3222 hasa proprietary low dropout
transmitter output stage providing true RS-232
performance from3to 3.6V power supplies. The
device requires only four small 0.1μF standard
external capacitors for operating from 3V supply.
The ST3222 has two receivers and two drivers.
TheST3222featuresa 1μA shutdown mode that
reduces power consumption and extends battery
lifein portable systems. Its receivers can remain
active in shutdown mode, allowing external
devices such as modemsto be monitored using
only 1μA supply current.
The deviceis guaranteedto runat data ratesof
250Kbps while maintaining RS-232 output levels.
Typical applications are Notebook, Subnotebook
and Palmtop Computers, Battery Powered
Equipment, Hand-Held Equipment, Peripherals
and Printers.
ORDERING CODES
ST3222
TO 3.6V, LOW POWER, UP TO 400KBPS,
RS-232 DRIVERS AND RECEIVERS
ST3222
2/9
PIN CONFIGURATION
PIN DESCRIPTION
ST3222
3/9
ABSOLUTE MAXIMUM RATINGS

AbsoluteMaximum Ratingsare those values beyond which damagetothe device may occur. Functional operation under these conditionis
not implied.V+ andV-can havea maximum magnitudeof +7V,but their absolute additioncannot exceed13V.
ELECTRICAL CHARACTERISTICS
1 -C4 =0.1μF,VCC =3V to3.6V,TA= -40to 85°C, unless otherwise specified.
Typical values are referredtoTA =25°C)
LOGIC INPUT ELECTRICAL CHARACTERISTICS

(C1 -C4 =0.1μF, VCC =3V to3.6V,TA= -40to 85°C, unless otherwise specified.
Typical values are referredtoTA =25°C)
Note1: Transmitter input hysteresisis typically 250mV
TRANSMITTER ELECTRICAL CHARACTERISTICS
1 -C4 =0.1μFVCC =3V to3.6V,TA= -40to 85°C, unless otherwise specified.
Typical values are referredtoTA =25°C)
ST3222
4/9
RECEIVER ELECTRICAL CHARACTERISTICS

(C1 -C4 =0.1μFVCC =3V to3.6V,TA= -40to 85°C, unless otherwise specified.
Typical values are referredtoTA =25°C)
TIMING CHARACTERISTICS

(C1 -C4 =0.1μF, VCC =3V to3.6V,TA= -40to 85°C, unless otherwise specified.
Typical values are referredtoT =25°C)
Transmitter Skewis measuredatthe transmitter zero cross points
ST3222
5/9
APPLICATION CIRCUITS
CAPACITANCE VALUE (μF)
ST3222
6/9
TYPICAL PERFORMANCE CHARACTERISTICS
(unless otherwise specifiedTj= 25°C)
Figure1:
Driver Voltage Transfer Characteristics
for Trasmitter Inputs
Figure2:
Driver Voltage Transfer Characteristics
for Receiver Inputs
Figure3:
Output Currentvs Output Low Voltage
Figure4:
Output Currentvs Output High Voltage
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