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SP339B Datasheet(PDF) 10 Page - Exar Corporation

Part # SP339B
Description  TRANSCEIVER WITH INTERNAL TERMINATION
PDF  23 Pages
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

SP339B Datasheet(HTML) 10 Page - Exar Corporation

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SP339B
10
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
REV. 1.0.0
TIMING CHARACTERISTICS (Continued)
UNLESS OTHERWISE NOTED:
VCC = +3.3V ±5% or +5.0V ±5%, C1-C4 = 0.1F; TA = TMIN to TMAX. Typical values are at VCC = 3.3V, TA = +25°C.
SYMBOL
PARAMETERS
MIN.
TYP.
MAX.
UNITS
CONDITIONS
RS-485/RS-422, DATA RATE = 250kbps (SLEW = Vcc), ONE TRANSMITTER SWITCHING
Maximum Data Rate
250
kbps
RL = 54CL = 50pF
tRPHL, tRPLH
Receiver Propagation Delay
50
150
ns
CL = 15pF, Figure 11
tRPHL-tRPLH Receiver Propagation Delay Skew
20
ns
tDPHL, tDPLH
Driver Propagation Delay
500
1000
ns
RL = 54CL = 50pF,
Figure 12
tDPHL-tDPLH Driver Propagation Delay Skew
100
ns
tDR, tDF
Driver Rise and Fall Time
300
650
1200
ns
tRZH, tRZL
Receiver Output Enable Time
200
ns
CL = 15pF, Figure 13
tRHZ, tRLZ
Receiver Output Disable Time
200
ns
tDZH, tDZL
Driver Output Enable Time
1000
ns
RL = 500CL = 50pF,
Figure 14
tDHZ, tDLZ
Driver Output Disable Time
200
ns
RS-485/RS-422, DATA RATE = 20Mbps (SLEW = 0V), ONE TRANSMITTER SWITCHING
Maximum Data Rate
20
Mbps RL = 54CL = 50pF
tRPHL, tRPLH
Receiver Propagation Delay
50
150
ns
CL = 15pF, Figure 11
tRPHL-tRPLH Receiver Propagation Delay Skew
10
ns
tDPHL, tDPLH
Driver Propagation Delay
30
100
ns
RL = 54CL = 50pF,
Figure 12
tDPHL-tDPLH Driver Propagation Delay Skew
10
ns
tDR, tDF
Driver Rise and Fall Time
10
20
ns
tRZH, tRZL
Receiver Output Enable Time
200
ns
CL = 15pF, Figure 13
tRHZ, tRLZ
Receiver Output Disable Time
200
ns
tDZH, tDZL
Driver Output Enable Time
200
ns
RL = 500CL = 50pF,
Figure 14
tDHZ, tDLZ
Driver Output Disable Time
200
ns



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