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ST3243E Datasheet(PDF) 6 Page - STMicroelectronics

Part No. ST3243E
Description  ±15KV ESD PROTECTED 3 TO 5.5V, 400KBPS, RS-232 TRANSCEIVER WITH AUTO-POWERDOWN
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST3243E Datasheet(HTML) 6 Page - STMicroelectronics

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ST3243E
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AUTO-POWERDOWN ELECTRICAL CHARACTERISTICS
(C1 -C4 =0.1µF, VCC =3V to5.5V, TA = -40 to 85°C, unless otherwise specified.
Typical values are referred to TA = 25°C, FORCEON = GND, FORCEOFF =VCC)
TRANSMITTER ELECTRICAL CHARACTERISTICS
(C1 -C4 =0.1µF, VCC =3V to5.5V, 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 to5.5V, TA = -40 to 85°C, unless otherwise specified.
Typical values are referred to TA = 25°C)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VRITE
Receiver Input Threshold to
INVALID Output Voltage
HIGH (Fig. 1)
Positive Threshold
2.7
V
Negative Threshold
2.7
V
VRITD
Receiver Input Threshold to
INVALID Output Voltage
LOW (Fig. 1)
-0.3
0.3
V
VIOL
INVALID Output Voltage
LOW
IOUT =1.6mA
0.4
V
VIOH
INVALID Output Voltage
HIGH
IOUT =-1mA
VCC-0.6
V
tWU
Receiver or Transmitter
Edge Transmitter Enabled
(Fig. 1)
100
µs
tINVH
Receiver Positive or
Negative Threshold to
INVALID HIGH (Fig. 1)
0.2
µs
tINVL
Receiver Positive or
Negative Threshold to
INVALID LOW (Fig. 1)
30
µs
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 VCC =3.3V
± 40
± 60
mA
IL
Output Leakage Current
VCC = 0 to 5.5V, transmitter output=± 12V,
transmitter disabled
± 25
µA
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
1.1
1.4
V
VRIH
RS-232 Input Threshold
High
TA = 25°C
VCC =3.3V
TA = 25°C
VCC =5.0V
1.6
1.9
2.4
2.4
V
VRIHYS Input Hysteresis
0.5
V
RRIN
Input Resistance
TA = 25°C
3
5
7
K


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