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SP339E
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
REV. 1.0.3
TIMING CHARACTERISTICS
U NLESS OTHERWISE NOTED :
V CC = +3.3V ±5% or +5.0V ±5%, C1-C4 = 0.1 F; T A = T MIN to T MAX . Typical values are at V CC = 3.3V, T A = +25°C.
S YMBOL
P ARAMETERS
M IN .
T YP .
M AX .
U NITS
C ONDITIONS
ALL MODES
t ENABLE
t SHUTDOWN
Enable from Shutdown
Enable to Shutdown
1000
1000
ns
ns
RS-232, DATA RATE = 250kbps (SLEW = Vcc), ONE TRANSMITTER SWITCHING
Maximum Data Rate
250
kbps
R L = 3k , C L = 1000pF
t RHL , t RLH
t RHL -t RLH
Receiver Propagation Delay
Receiver Propagation Delay Skew
100
100
ns
ns
C L = 150pF, Figure 9
t DHL , t DLH
t DHL -t DLH
Driver Propagation Delay
Driver Propagation Delay Skew
1400
600
ns
ns
R L = 3k , C L = 2500pF,
Figure 10
t SHL, t SLH
Transition Region Slew Rate from
+3.0V to -3.0V or -3.0V to +3.0V
4
30
V/ s
V CC = 3.3V, R L = 3k to 7k
C L = 150pF to 2500pF,
Figure 10
t SHL, t SLH
Transition Region Slew Rate from
+3.0V to -3.0V or -3.0V to +3.0V
6
30
V/ s
V CC = 3.3V, R L = 3k to 7k
C L = 150pF to 2500pF,
T A = 25°C, Figure 10
RS-232, DATA RATE = 1Mbps (SLEW = 0V), ONE TRANSMITTER SWITCHING
Maximum Data Rate
1
Mbps R L = 3k , C L = 250pF
t RHL , t RLH
t RHL -t RLH
Receiver Propagation Delay
Receiver Propagation Delay Skew
100
100
ns
ns
C L = 150pF, Figure 9
t DHL , t DLH
t DHL -t DLH
Driver Propagation Delay
Driver Propagation Delay Skew
300
150
ns
ns
R L = 3k , C L = 1000pF,
Figure 10
t SHL, t SLH
Transition Region Slew Rate from
+3.0V to -3.0V or -3.0V to +3.0V
15
150
V/ s
V CC = 3.3V, R L = 3k to 7k
C L = 150pF to 1000pF,
Figure 10
t SHL, t SLH
Transition Region Slew Rate from
+3.0V to -3.0V or -3.0V to +3.0V
24
150
V/ s
V CC = 3.3V, R L = 3k to 7k
C L = 150pF to 1000pF,
T A = 25°C, Figure 10
8
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