SP339E
10
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION REV. 1.0.4
TIMING CHARACTERISTICS (Continued)
UNLESS OTHERWISE NOTED:
V
CC
= +3.3V ±5% or +5.0V ±5%, C1-C4 = 0.1PF; 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 = Vcc), ONE TRANSMITTER SWITCHING
Maximum Data Rate 250 kbps
R
L
= 54:C
L
= 50pF
t
RPHL
, t
RPLH
Receiver Propagation Delay 50 150 ns
C
L
= 15pF, Figure 11
~t
RPHL
-t
RPLH
~
Receiver Propagation Delay Skew 20 ns
t
DPHL
, t
DPLH
Driver Propagation Delay 500 1000 ns
R
L
= 54:C
L
= 50pF,
Figure 12
~t
DPHL
-t
DPLH
~
Driver Propagation Delay Skew 100 ns
t
DR,
t
DF
Driver Rise and Fall Time 300 650 1200 ns
t
RZH
, t
RZL
Receiver Output Enable Time 200 ns
C
L
= 15pF, Figure 13
t
RHZ
, t
RLZ
Receiver Output Disable Time 200 ns
t
DZH
, t
DZL
Driver Output Enable Time 1000 ns
R
L
= 500:C
L
= 50pF,
Figure 14
t
DHZ
, t
DLZ
Driver Output Disable Time 200 ns
RS-485/RS-422, DATA RATE = 20Mbps (SLEW = 0V), ONE TRANSMITTER SWITCHING
Maximum Data Rate 20 Mbps
R
L
= 54:C
L
= 50pF
t
RPHL
, t
RPLH
Receiver Propagation Delay 50 150 ns
C
L
= 15pF, Figure 11
~t
RPHL
-t
RPLH
~
Receiver Propagation Delay Skew 10 ns
t
DPHL
, t
DPLH
Driver Propagation Delay 30 100 ns
R
L
= 54:C
L
= 50pF,
Figure 12
~t
DPHL
-t
DPLH
~
Driver Propagation Delay Skew 10 ns
t
DR,
t
DF
Driver Rise and Fall Time 10 20 ns
t
RZH
, t
RZL
Receiver Output Enable Time 200 ns
C
L
= 15pF, Figure 13
t
RHZ
, t
RLZ
Receiver Output Disable Time 200 ns
t
DZH
, t
DZL
Driver Output Enable Time 200 ns
R
L
= 500:C
L
= 50pF,
Figure 14
t
DHZ
, t
DLZ
Driver Output Disable Time 200 ns
