sp338e Exar Corporation, sp338e Datasheet - Page 8

• Manufacturer Part Number: sp338e
• Description: Rs-232/rs-485/rs-422 Transceiver With Internal Termination
• Manufacturer: Exar Corporation

SP338E
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
TIMING CHARACTERISTICS
U
V
ALL MODES
RS-232, DATA RATE = 250kbps (SLEW = Vcc), ONE TRANSMITTER SWITCHING
RS-232, DATA RATE = 1Mbps (SLEW = 0V), ONE TRANSMITTER SWITCHING
NLESS OTHERWISE NOTED
CC
⏐t
⏐t
⏐t
⏐t
t
SHUTDOWN
t
t
t
t
t
t
t
t
RHL
DHL
RHL
DHL
S
t
RHL
DHL
SHL,
SHL,
RHL
DHL
SHL,
SHL,
ENABLE
= +3.3V ±5% or +5.0V ±5%, C1-C4 = 0.1µF; T
YMBOL
, t
, t
, t
, t
-t
-t
-t
-t
t
t
t
t
RLH
DLH
SLH
SLH
RLH
DLH
SLH
SLH
RLH
DLH
RLH
DLH
⏐
⏐
⏐
⏐
Enable from Shutdown
Enable to Shutdown
Maximum Data Rate
Receiver Propagation Delay
Receiver Propagation Delay Skew
Driver Propagation Delay
Driver Propagation Delay Skew
Transition Region Slew Rate from
+3.0V to -3.0V or -3.0V to +3.0V
Transition Region Slew Rate from
+3.0V to -3.0V or -3.0V to +3.0V
Maximum Data Rate
Receiver Propagation Delay
Receiver Propagation Delay Skew
Driver Propagation Delay
Driver Propagation Delay Skew
Transition Region Slew Rate from
+3.0V to -3.0V or -3.0V to +3.0V
Transition Region Slew Rate from
+3.0V to -3.0V or -3.0V to +3.0V
:
P
ARAMETERS
A
= T
MIN
M
250
15
24
4
6
1
IN
to T
.
8
MAX
1000
1000
1400
T
100
100
300
YP
. Typical values are at V
.
M
100
600
100
150
150
150
30
30
AX
.
U
Mbps R
kbps
V/µs
V/µs
V/µs
V/µs
NITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
R
C
R
Figure 14
V
C
Figure 14
V
C
T
C
R
Figure 14
V
C
Figure 14
V
C
T
A
A
CC
CC
CC
CC
L
L
L
L
L
L
L
L
L
L
CC
= 25°C,
= 25°C,
= 3kΩ, C
= 150pF,
= 3kΩ, C
= 150pF to 2500pF,
= 150pF to 2500pF,
= 3kΩ, C
= 150pF,
= 3kΩ, C
= 150pF to 1000pF,
= 150pF to 1000pF,
= 3.3V, R
= 3.3V, R
= 3.3V, R
= 3.3V, R
= 3.3V, T
C
Figure 14
Figure 14
ONDITIONS
L
L
L
L
Figure 13
Figure 13
= 1000pF
= 2500pF,
= 250pF
= 1000pF,
L
L
L
L
A
= 3kΩ to 7kΩ,
= 3kΩ to 7kΩ,
= 3kΩ to 7kΩ,
= 3kΩ to 7kΩ,
= +25°C.
REV. 1.0.0