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ST3222 数据表(PDF) 4 Page - STMicroelectronics

部件名 ST3222
功能描述  3 TO 3.6V, LOW POWER, UP TO 400KBPS, RS-232 DRIVERS AND RECEIVERS
PDF  9 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

ST3222 数据表(HTML) 4 Page - STMicroelectronics

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RECEIVER ELECTRICAL CHARACTERISTICS
(C1 -C4 =0.1µFVCC =3V to3.6V, TA = -40 to 85°C, unless otherwise specified.
Typical values are referred to TA =25°C)
TIMING CHARACTERISTICS
(C1 -C4 =0.1µF, VCC =3V to3.6V, TA = -40 to 85°C, unless otherwise specified.
Typical values are referred to TA =25°C)
Transmitter Skew is measured at the transmitter zero cross points
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
IOL
Output Leakage Current
R-OUT, EN =VCC, Receiver Disabled
± 0.05
± 10
µA
VRIN
Receiver Input Voltage
Operating Range
-25
25
V
VRIL
Input Threshold Low
TA = 25°C
VCC = 3.3V
0.6
1.2
V
VRIH
Input Threshold High
TA = 25°C
VCC = 3.3V
1.5
2.4
V
VRIHYS Input Hysteresis
0.5
V
RRIN
Input Resistance
TA = 25°C
3
5
7
K
Ω
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
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
DR
Data Transfer Rate
RL =3KΩ
CL2= 1000pF
one trasmitter switching
240
400
Kbps
tPHLR
tPLHR
Propagation Delay Input to
Output
RXIN to RXOUT
CL = 150pF
0.2
µs
|tPHLT
-tTHL|
Transmitter Propagation
Delay Difference
(Note 1)
100
ns
tOER
Receiver Output Enable
Time
Normal Operation
200
ns
tODR
Receiver Output Disable
Time
Normal Operation
200
ns
|tPHLR
-tTHR|
Receiver Propagation Delay
Difference
50
ns
SRT
Trnasition Slew Rate
TA = 25°C RL =3KΩ 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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