ST3222 Просмотр технического описания (PDF) - STMicroelectronics
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ST3222 Datasheet PDF : 9 Pages
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ST3222
RECEIVER ELECTRICAL CHARACTERISTICS
(C1 - C4 = 0.1µF VCC = 3V to 3.6V, TA = -40 to 85°C, unless otherwise specified.
Typical values are referred to TA = 25°C)
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
KΩ
VROL TTL/CMOS Output Voltage IOUT = 1.6mA
Low
0.4
V
VROH TTL/CMOS Output Voltage IOUT = -1mA
High
VCC-0.6 VCC-0.1
V
TIMING CHARACTERISTICS
(C1 - C4 = 0.1µF, VCC = 3V to 3.6V, TA = -40 to 85°C, unless otherwise specified.
Typical values are referred to TA = 25°C)
Symbol
Parameter
Test Conditions
Min. Typ.
DR Data Transfer Rate
RL = 3KΩ CL2= 1000pF
one trasmitter switching
240 400
tPHLR Propagation Delay Input to RXIN to RXOUT
CL = 150pF
0.2
tPLHR Output
|tPHLT Transmitter Propagation (Note 1)
100
- tTHL| Delay Difference
tOER Receiver Output Enable Normal Operation
200
Time
tODR Receiver Output Disable Normal Operation
200
Time
|tPHLR Receiver Propagation Delay
50
- tTHR| Difference
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
Transmitter Skew is measured at the transmitter zero cross points
Max.
30
30
Unit
Kbps
µs
ns
ns
ns
ns
V/µs
V/µs
4/9
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