SP335E_17 Datasheet, PDF (7/23 Pages) Exar Corporation – TRANSCEIVER WITH INTERNAL TERMINATION

SP335E
REV. 1.0.2
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
TIMING CHARACTERISTICS (Continued)
UNLESS OTHERWISE NOTED: 
V_CC = +3.0V to +5.5V, C1-C4 = 0.1µF; T_A = T_MIN to T_MAX. Typical values are at V_CC = 3.3V, T_A = +25°C.
SYMBOL
PARAMETERS
MIN. TYP. MAX. UNITS
CONDITIONS
RS-485/RS-422, DATA RATE = 250kbps (SLEW = 0V), ONE TRANSMITTER SWITCHING
Maximum Data Rate
250
kbps R_L = 54, C_L = 50pF
t_RPHL, t_RPLH
t_RPHL-t_RPLH
Receiver Propagation Delay
Receiver Propagation Delay Skew
50 150 ns
10
ns ^{CL = 15pF, Figure 10}
t_DPHL, t_DPLH
t_DPHL-t_DPLH
t_DR, t_DF
Driver Propagation Delay
Driver Propagation Delay Skew
Driver Rise and Fall Time
500 1000 ns
100
ns ^{RL = 54, CL = 50pF,}
Figure 11
300 650 1200 ns
t_RZH, t_RZL
t_RHZ, t_RLZ
t_DZH, t_DZL
t_DHZ, t_DLZ
Receiver Output Enable Time
Receiver Output Disable Time
Driver Output Enable Time
Driver Output Disable Time
200
200
1000
200
ns
ns ^{CL = 15pF, Figure 12}
ns _{RL = 500, CL = 50pF,}
ns Figure 13
RS-485/RS-422, DATA RATE = 20Mbps (SLEW = V_CC), ONE TRANSMITTER SWITCHING
Maximum Data Rate
20
Mbps R_L = 54, C_L = 50pF
t_RPHL, t_RPLH
t_RPHL-t_RPLH
Receiver Propagation Delay
Receiver Propagation Delay Skew
50 150 ns
10
ns ^{CL = 15pF, Figure 10}
t_DPHL, t_DPLH
t_DPHL-t_DPLH
t_DR, t_DF
Driver Propagation Delay
Driver Propagation Delay Skew
Driver Rise and Fall Time
30 100 ns
10
ns ^{RL = 54, CL = 50pF,}
Figure 11
10
20
ns
t_RZH, t_RZL
t_RHZ, t_RLZ
t_DZH, t_DZL
t_DHZ, t_DLZ
Receiver Output Enable Time
Receiver Output Disable Time
Driver Output Enable Time
Driver Output Disable Time
200 ns
200
ns ^{CL = 15pF, Figure 12}
200
ns _{RL = 500, CL = 50pF,}
200 ns Figure 13
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