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5V POWERED MULTI-CHANNEL RS-232 DRIVERS AND RECEIVERS
1/10June 2001 SUPPLY VOLTAGE RANGE: 4.5 TO 5.5V SUPPLY CURRENT NO LOAD (TYP): 1.5mA TRASMITTER OUTPUT VOLTAGE SWING
(TYP): ± 9V TRANSITION SLEW RATE (TYP .): 12V/μs RECEIVER PROPAGATION DELAY (TYP.):
0.1μs COMPATIBLE WITH MAX202 RECEIVER INPUT VOLTAGE RANGE: ± 30V DATA RATE (TYP.): 400Kbp/s OPERATING TEMPERATURE RANGE:
-40 TO 85 °C, 0 TO 70°C
DESCRIPTIONThe ST202 is a 2 driver, 2 receiver device
following EIA/TIA-232 and V.28 communication
standard. It is particularly suitable for applications
where ± 12V is not available. The ST202 uses a
single 5V power supply and only four external
capacitors (0.1μF). Typical application are in:
Portable Computers, Low Power Modems,
Interfaces Translation, Battery Powered RS-232
Networks.
ORDERING CODES
ST2025V POWERED MULTI-CHANNEL
RS-232 DRIVERS AND RECEIVERS
ST2022/10
PIN CONFIGURATION
PIN DESCRIPTION
ABSOLUTE MAXIMUM RATINGS Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
ST2023/10
ELECTRICAL CHARACTERISTICS (C1 - C4 = 0.1μF, VCC = 5V ± 10%, TA = -40 to 85°C, unless otherwise specified.
Typical values are referred to TA = 25°C)
TRANSMITTER ELECTRICAL CHARACTERISTICS (C1 - C4 = 0.1μF, VCC = 5V ± 10%, TA = -40 to 85°C, unless otherwise specified.
Typical values are referred to TA = 25°C)
Note 1: Measured from 3V to -3V or from -3V to 3V.
Note2: One trasmitter output is loaded with RL = 3KΩ to 7KΩ, CL = 50 to 1000pF
RECEIVER ELECTRICAL CHARACTERISTICS 1 - C4 = 0.1μF, VCC = 5V ± 10%, TA = -40 to 85°C, unless otherwise specified.
Typical values are referred to TA = 25°C)
Note 1: RS-232 IN to TTL-CMOS OUT (from 50% to 50%)
ST2024/10
APPLICATION CIRCUITS (note 1, note 2) Note 1: C1-4 capacitors can even be 1μF ones.
Note 2: C1-4 can be common or biased capacitors.
CAPACITANCE VALUE (μF)
ST2025/10
TYPICAL PERFORMANCE CHARACTERISTICS (unless otherwise specified Tj = 25°C)
Figure 1 : Driver Voltage Transfer Characteristics
Figure 2 : Drive Short Circuit Output Current vs Temperature
Figure 3 : Receiver Threshold vs Supply Voltage
Figure 4 : Driver Output Capability Current vs Output Voltage
Figure 5 : Driver Short Circuit Supply Current vs Temperature
Figure 6 : Receiver Threshold vs Temperature
