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ST3243BTR Folha de dados(PDF) 5 Page - STMicroelectronics

Nome de Peças ST3243BTR
Descrição Electrónicos  3 TO 5.5V, 400KBPS, RS-232 TRANSCEIVER WITH AUTO-POWERDOWN
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST3243BTR Folha de dados(HTML) 5 Page - STMicroelectronics

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TRANSMITTER ELECTRICAL CHARACTERISTICS
(C1 - C4 = 0.1µF, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified.
Typical values are referred to TA = 25°C)
RECEIVER ELECTRICAL CHARACTERISTICS
(C1 - C4 = 0.1µF, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified.
Typical values are referred to TA = 25°C)
TIMING CHARACTERISTICS
(C1 - C4 = 0.1µF, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified.
Typical values are referred to TA = 25°C)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VTOUT Output Voltage Swing
All Transmitter outputs are loaded with
3K
Ω to GND
± 5
± 5.4
V
ROUT
Output Resistance
VCC = V+ = V- = 0V
VOUT = ± 2V
300
10M
ISC
Output Short Circuit Current
± 35
± 60
mA
VOT
Transmitter Output Voltage
T1IN = T2IN = GND,
T3IN = VCC
T3OUT loaded with 3K
Ω to GND
T1OUT and T2OUT loaded with 2.5mA
each
± 5V
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VRIN
Receiver Input Voltage
Operating Range
-25
25
V
VRIL
RS-232 Input Threshold
Low
TA = 25°C
VCC = 3.3V
TA = 25°C
VCC = 5.0V
0.6
0.8
1.2
1.2
V
VRIH
RS-232 Input Threshold
High
TA = 25°C
VCC = 3.3V
TA = 25°C
VCC = 5.0V
1.5
1.8
2.4
2.4
V
VRIHYS Input Hysteresis
0.5
V
RRIN
Input Resistance
TA = 25°C
3
5
7
K
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
DR
Maximum Data Rate
RL = 3KΩ
CL= 1000pF
one trasmitter switching
250
400
Kbps
tPHL
tPLH
Receiver Propagation Delay RIN to ROUT
CL = 150pF
0.15
µs
tT_SKEW Transmitter Skew
100
ns
tR_SKEW Receiver Skew
50
ns
tINVH
Receiver Positive or
negative Threshold to
INVALID HIGH
1
µs
tINVL
Receiver Positive or
negative Threshold to
INVALID LOW
30
µs
SRT
Transition Slew Rate
TA = 25°C RL = 3K to 7KΩ
VCC = 3.3V
measured from +3V to -3V or -3V to +3V
CL = 150pF to 1000pF
CL = 150pF to 2500pF
6
4
30
30
V/
µs
V/
µs


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