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ST3232CN bảng dữ liệu(PDF) 5 Page - STMicroelectronics

tên linh kiện ST3232CN
Giải thích chi tiết về linh kiện  3 TO 5.5V, LOW POWER, UP TO 400KBPS, RS-232 DRIVERS AND RECEIVERS
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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ST3232
Electrical characteristics
5/19
3
Electrical characteristics
Table 3.
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)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
ISUPPLY
VCC Power supply current
No Load, VCC = 3V ± 10%, TA = 25°C
0.3
1
mA
No Load, VCC = 5V ± 10%, TA = 25°C
1
2
mA
Table 4.
Logic input (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
VTIL
Input logic threshold low
T-IN (1)
0.8
V
VTIH
Input logic threshold high
VCC = 3.3V
2
V
VCC = 5V
2.4
IIL
Input leakage current
T-IN
± 0.01
± 1µA
1.
Transmitter input hysteresis is typically 250mV.
Table 5.
Transmitter (C1 - C4 = 0.1µF tested at 3.3V±10%, 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
RTOUT
Transmitter output
resistance
VCC = V+ = V- = 0V, VOUT = ± 2V
300
10M
ITSC
Output short circuit current
VCC = 3V or 5V, VOUT = ± 12
± 60
mA
Table 6.
Receiver (C1 - C4 = 0.1µF tested at 3.3V±10%, 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
VRIN
Receiver input voltage operating
range
-25
25
V
VRIL
RS-232 Input threshold low
TA = 25°C, VCC = 3.3V
0.6
1.1
V
TA = 25°C, VCC = 5V
0.8
1.5
VRIH
RS-232 Input threshold high
TA = 25°C, VCC = 3.3V
1.5
2.4
V
TA = 25°C, VCC = 5V
1.8
2.4
VRIHYS
Input hysteresis
0.3
V
RRIN
Input resistance
TA = 25°C
3
5
7
k
VROL
TTL/CMOS Output voltage low
IOUT = 1.6mA
0.4
V
VROH
TTL/CMOS Output voltage high
IOUT = -1mA
VCC-0.6
VCC-0.1
V


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