XR34350 Datasheet, PDF (6/20 Pages) Exar Corporation – Internal Termination and Wide Output Swing

XR34350
Timing Characteristics (Continued)
Unless otherwise noted: V_CC = 3.3V ±5% or 5.0V ±5%, C1 to C4 = 0.1µF; T_A = T_MIN to T_MAX. Typical values are at
V_CC = 3.3V, T_A = 25°C.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
RS-485/RS-422, Data Rate = 250kbps, SLEW = V_CC, One Transmitter Switching
Maximum data rate
RL = 54Ω, C_L = 50pF
t_RPHL, t_RPLH
|t_RPHL - t_RPLH|
Receiver propagation delay
Receiver propagation delay skew
C_L = 15pF, Figure 12
t_DPHL, t_DPLH
|t_DPHL - t_DPLH|
t_DR, t_DF
Driver propagation delay
Driver propagation delay skew
Driver rise and fall time
R_L = 54Ω, C_L = 50pF, Figure 13
t_RZH, t_RZL
t_RHZ, t_RLZ
Receiver output enable Time
Receiver output disable time
C_L = 15pF, Figure 14
t_DZH, t_DZL
t_DHZ, t_DLZ
Driver output enable time
Driver output disable time
R_L = 500Ω, C_L = 50pF, Figure 15
RS-485/RS-422, Data Rate = 20Mbps, SLEW = 0V, One Transmitter Switching
Maximum data rate
t_RPHL, t_RPLH
|t_RPHL - t_RPLH|
Receiver propagation delay
Receiver propagation delay skew
RL = 54Ω, C_L = 50pF
C_L = 15pF, Figure 12
t_DPHL, t_DPLH
Driver propagation delay
|t_DPHL - t_DPLH|
t_DR, t_DF
t_RZH, t_RZL
t_RHZ, t_RLZ
Driver propagation delay skew
Driver rise and fall time
Receiver output enable Time
Receiver output disable time
R_L = 54Ω, C_L = 50pF, Figure 13
C_L = 15pF, Figure 14
t_DZH, t_DZL
t_DHZ, t_DLZ
Driver output enable time
Driver output disable time
R_L = 500Ω, C_L = 50pF, Figure 15
250
kbps
50
150
ns
20
ns
500
1000
ns
100
ns
300
650
1200
ns
200
ns
200
ns
1000
ns
200
ns
20
Mbps
50
150
ns
10
ns
30
100
ns
10
ns
10
20
ns
200
ns
200
ns
200
ns
200
ns
REV1B
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