ST3237 Просмотр технического описания (PDF) - STMicroelectronics
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ST3237 Datasheet PDF : 15 Pages
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ST3237
TIMING CHARACTERISTICS
(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
DR Maximum Data Rate
RL = 3KΩ CL= 1000pF
250
one transmitter switching VHSCI=GND
Kbps
RL = 3KΩ CL= 250pF
100
one transmitter switching VHSCI=VCC
VCC= 3 to 5.55V
Kbps
tPHLR Propagation Delay Input to RIN to ROUT
tPLHR Output
CL = 150pF
0.15
µs
tT_SKEW Transmitter Skew
|tPHL - tTLH|
VHSCI=GND
100
ns
|tPHL - tTLH|
VHSCI=VCC
60
ns
tR_SKEW Receiver Skew
|tPHL - tTLH|
50
ns
tOER Receiver Output Enable
Time
Normal Operation
80
ns
tODR Receiver Output Disable
Time
Normal Operation
130
ns
SRT Transition Slew Rate
TA = 25°C RL = 3 to 7KΩ VCC = 3.3V
measured from +3V to -3V or -3V to +3V
CL = 150pF to 1000pF VHSCI=GND
6
CL = 150pF to 1000pF VHSCI=VCC
CL = 150pF to 2500pF VHSCI=GND
24
4
30 V/µs
150 V/µs
30 V/µs
Transmitter Skew is measured at the transmitter zero cross points
5/15
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