SP339E
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
REV. 1.0.0
TIMING CHARACTERISTICS
UNLESS OTHERWISE NOTED:
VCC = +3.3V ±5% or +5.0V ±5%, C1-C4 = 0.1µF; TA = TMIN to TMAX. Typical values are at VCC = 3.3V, TA = +25°C.
SYMBOL
PARAMETERS
MIN.
TYP.
MAX. UNITS
CONDITIONS
ALL MODES
tENABLE
Enable from Shutdown
Enable to Shutdown
1000
1000
ns
ns
tSHUTDOWN
RS-232, DATA RATE = 250kbps (SLEW = Vcc), ONE TRANSMITTER SWITCHING
RL = 3kΩ, CL = 1000pF
Maximum Data Rate
250
kbps
ns
tRHL, tRLH
Receiver Propagation Delay
Receiver Propagation Delay Skew
Driver Propagation Delay
100
CL = 150pF, Figure 9
⏐tRHL-tRLH
⏐
100
600
ns
tDHL, tDLH
1400
ns
RL = 3kΩ, CL = 2500pF,
Figure 10
⏐tDHL-tDLH
⏐
Driver Propagation Delay Skew
ns
VCC = 3.3V, RL = 3kΩ to 7kΩ,
Transition Region Slew Rate from
+3.0V to -3.0V or -3.0V to +3.0V
tSHL, SLH
t
4
6
30
30
V/µs CL = 150pF to 2500pF,
Figure 10
VCC = 3.3V, RL = 3kΩ to 7kΩ,
Transition Region Slew Rate from
+3.0V to -3.0V or -3.0V to +3.0V
tSHL, SLH
t
CL = 150pF to 2500pF,
TA = 25°C, Figure 10
V/µs
RS-232, DATA RATE = 1Mbps (SLEW = 0V), ONE TRANSMITTER SWITCHING
RL = 3kΩ, CL = 250pF
Maximum Data Rate
1
Mbps
ns
tRHL, tRLH
Receiver Propagation Delay
Receiver Propagation Delay Skew
Driver Propagation Delay
100
300
CL = 150pF, Figure 9
⏐tRHL-tRLH
⏐
100
150
ns
tDHL, tDLH
ns
RL = 3kΩ, CL = 1000pF,
Figure 10
⏐tDHL-tDLH
⏐
Driver Propagation Delay Skew
ns
VCC = 3.3V, RL = 3kΩ to 7kΩ,
Transition Region Slew Rate from
+3.0V to -3.0V or -3.0V to +3.0V
tSHL, SLH
t
15
24
150
150
V/µs CL = 150pF to 1000pF,
Figure 10
VCC = 3.3V, RL = 3kΩ to 7kΩ,
Transition Region Slew Rate from
+3.0V to -3.0V or -3.0V to +3.0V
tSHL, SLH
t
CL = 150pF to 1000pF,
TA = 25°C, Figure 10
V/µs
8
EXAR [ EXAR CORPORATION ]
