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ST3243BTR bảng dữ liệu(PDF) 7 Page - STMicroelectronics

tên linh kiện ST3243BTR
Giải thích chi tiết về linh kiện  3 to 5.5 V, 400 Kbps, RS-232 transceiver with auto-power-down
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST3243BTR bảng dữ liệu(HTML) 7 Page - STMicroelectronics

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ST3243B - ST3243C
Electrical characteristics
7/22
tinvh
Receiver positive or negative
threshold to INVALID HIGH
IOUT = -1mA
1
ms
tinvL
Receiver positive or negative
threshold to INVALID LOW
30
ms
Table 7.
Auto-power-down electrical characteristics
(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
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
Table 8.
Transmitter electrical characteristics
(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
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
Ω
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
Table 9.
Receiver electrical characteristics
(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
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
Ω


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