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| SP335E_17 Datasheet, PDF (6/23 Pages) Exar Corporation – TRANSCEIVER WITH INTERNAL TERMINATION | |||
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SP335E
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
TIMING CHARACTERISTICS
REV. 1.0.2
UNLESS OTHERWISE NOTED: ï
VCC = +3.0V to +5.5V, 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
tSHUTDOWN Enable to Shutdown
1000
ns
1000
ns
RS-232, DATA RATE = 250kbps (SLEW = 0V), ONE TRANSMITTER SWITCHING
Maximum Data Rate
250
kbps RL = 3kï, CL = 1000pF
tRHL, tRLH
ï¼tRHL-tRLHï¼
Receiver Propagation Delay
Receiver Propagation Delay Skew
100
ns
CL = 150pF, Figure 8
100 ns
tDHL, tDLH
ï¼tDHL-tDLHï¼
Driver Propagation Delay
Driver Propagation Delay Skew
1400
600
ns RL = 3kï, CL = 2500pF,
ns Figure 9
tSHL, tSLH
Transition Region Slew Rate from
3.0V to -3.0V or -3.0V to 3.0V
6
tSHL, tSLH
Transition Region Slew Rate from
3.0V to -3.0V or -3.0V to 3.0V
4
VCC = +3.3V, RL = 3kï to 7kï,
30 V/µs CL = 150pF to 2500pF,
TA = 25°C, Figure 9
VCC = +3.3V, RL = 3kï to 7kï,
30 V/µs CL = 150pF to 2500pF,
Figure 9
RS-232, DATA RATE = 1Mbps (SLEW = VCC), ONE TRANSMITTER SWITCHING
Maximum Data Rate
1
Mbps RL = 3kï, CL = 250pF
tRHL, tRLH
ï¼tRHL-tRLHï¼
Receiver Propagation Delay
Receiver Propagation Delay Skew
100
ns
CL = 150pF, Figure 8
100 ns
tDHL, tDLH
ï¼tDHL-tDLHï¼
Driver Propagation Delay
Driver Propagation Delay Skew
300
ns RL = 3kï, CL = 1000pF,
150 ns Figure 9
tSHL, tSLH
Transition Region Slew Rate from
3.0V to -3.0V or -3.0V to 3.0V
13
tSHL, tSLH
Transition Region Slew Rate from
3.0V to -3.0V or -3.0V to 3.0V
24
VCC = +3.3V, RL = 3kï to 7kï,
150 V/µs CL = 150pF to 1000pF,
Figure 9
VCC = +3.3V, RL = 3kï to 7kï,
150 V/µs CL = 150pF to 1000pF,
TA = 25°C, Figure 9
6
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