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ST3243B 데이터시트(PDF) 8 Page - STMicroelectronics

부품명 ST3243B
상세설명  3 to 5.5 V, 400 kbps, RS-232 transceiver with auto-power-down
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST3243B 데이터시트(HTML) 8 Page - STMicroelectronics

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Electrical characteristics
ST3243B ST3243C
8/17
Doc ID 7539 Rev 10
C1 - C4 = 0.1 µF, VCC = 3 V to 5.5 V, TA = -40 to 85°C, unless otherwise specified. Typical
values are referred to TA = 25 °C.
C1 - C4 = 0.1 µF, VCC = 3 V to 5.5 V, TA = -40 to 85 °C, unless otherwise specified. Typical
values are referred to TA = 25 °C.
tWU
Receiver threshold to
transmitter enabled
IOUT = 1.6 mA
250
µs
tINVH
Receiver positive or negative
threshold to INVALID HIGH
IOUT = -1 mA
1
µs
tINVL
Receiver positive or negative
threshold to INVALID LOW
30
µs
Table 7.
Auto-power-down electrical characteristics (continued)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
Table 8.
Transmitter electrical characteristics
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
VTOUT
Output voltage swing
All transmitter outputs are loaded with
3 k
Ω to GND
± 5
± 5.4
V
ROUT
Output resistance
VCC = V+ = V- = 0 V, VOUT = ± 2 V
300
10 M
Ω
ISC
Output short-circuit current
± 35
± 60
mA
VOT
Transmitter output voltage
T1IN = T2IN = GND, T3IN = VCC
T3OUT loaded with 3 k
Ω to GND
T1OUT and T2OUT loaded with 2.5 mA
each
± 5V
Table 9.
Receiver electrical characteristics
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 = 3.3 V
TA = 25 °C, VCC = 5.0 V
0.6
0.8
1.2
1.2
V
VRIH
RS-232 Input threshold high
TA = 25 °C, VCC = 3.3 V
TA = 25 °C, VCC = 5.0 V
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
Ω


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