Electrical characteristics
ST3222E
Table 9.
Symbol
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)
Parameter
Test conditions
Min. Typ. Max. Unit
IOL
VRIN
Output leakage current
Receiver input voltage
operating range
R-OUT, EN = VCC, receiver disabled
± 0.05 ± 10 µA
-25
25
V
VRIL Input threshold low
VRIH Input threshold high
VRIHYS
RRIN
VROL
Input hysteresis
Input resistance
Output voltage low
VROH Output voltage high
TA = 25°C, VCC = 3.3 V
TA = 25°C, VCC = 5 V
TA = 25°C, VCC = 3.3 V
TA = 25°C, VCC = 5 V
TA = 25°C
IOUT = 1.6 mA
IOUT = -1 mA
0.6
1.2
V
0.8
1.5
1.5 2.4
V
1.8 2.4
0.5
V
3
5
7
KΩ
0.4
V
VCC-0.6
VCC-
0.1
V
Table 10.
Symbol
Timing 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)
Parameter
Test conditions
Min. Typ. Max. Unit
DR Data transfer rate
RL = 3 KΩ, CL2= 1000 pF
one transmitter switching
250
Kbps
tPHLR
tPLHR
|tPHLT
- tTHL|
tOER
tODR
Propagation delay input to
output
RXIN to RXOUT, CL = 150 pF
Transmitter propagation
delay difference (1)
Receiver output enable
time
Normal operation
Receiver output disable
time
Normal operation
0.15
µs
200
ns
50
ns
50
ns
|tPHLR Receiver propagation
- tTHR| delay difference
SRT Transition slew rate
TA = 25°C RL = 3 KΩ to 7 KΩ
VCC = 3.3 V
6
measured from +3V to -3V or -3V to +3V
CL = 150 pF to 1000 pF
TA = 25°C RL = 3 KΩ to 7 KΩ
VCC = 3.3 V
4
measured from +3V to -3V or -3V to +3V
CL = 150 pF to 2500 pF
1. Transmitter Skew is measured at the transmitter zero cross points
50
ns
30 V/µs
30 V/µs
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