sp338e Exar Corporation, sp338e Datasheet - Page 7

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

REV. 1.0.0
ELECTRICAL CHARACTERISTICS (Continued)
U
V
DIFFERENTIAL RECEIVER INPUTS (RS-485 / RS-422)
DIFFERENTIAL DRIVER OUTPUTS (RS-485 / RS-422)
CC
NLESS OTHERWISE NOTED
S
R
R
∆V
∆V
= +3.3V ±5% or +5.0V ±5%, C1-C4 = 0.1µF; T
∆V
YMBOL
V
I
V
V
R
TERM
TERM
OSD
I
I
CM
IN
OD
TH
O
IN
OD
CM
TH
Receiver Input Resistance
Receiver Differential Threshold
Voltage
Receiver Input Hysteresis
Receiver Input Current
Termination Resistance
Termination Resistance
Differential Driver Output
Change In Magnitude of
Differential Output Voltage
Driver CommonMode Output Voltage
Change In Magnitude of
Common Mode Output Voltage
Driver Output Short Circuit Current
Driver Output Leakage Current
:
P
ARAMETERS
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
A
= T
MIN
-200
M
-0.2
100
100
1.5
1.5
1.5
96
2
IN
to T
.
7
MAX
-125
T
120
120
25
YP
. Typical values are at V
.
M
±250
±100
-100
+0.2
V
V
V
V
125
155
140
-50
0.2
AX
CC
CC
CC
CC
3
.
U
mV
mV
mA
kΩ
µA
µA
µA
NITS
Ω
Ω
V
V
V
V
V
V
V
TERM = 0V,
-7V ≤ V
V
V
V
TERM = V
-7V ≤ V
TERM = V
V
R
R
V
V
R
R
R
-7V ≤ V
ENABLE = 0V,
or DIR1 = 0V and DIR2 = 0V in
full duplex modes,
-7V ≤ V
CM
IN
IN
CM
L
L
CM
CM
L
L
L
CC
= 100Ω (RS-422),
= 54Ω (RS-485),
= 54Ω or 100Ω,
= 54Ω or 100Ω,
= 54Ω or 100Ω,
= +12V
= -7V
= 0V
= 0V
= -7V,
= +12V,
= 3.3V, T
IN
CM
O
O
≤ +12V,
≤ +12V
≤ +12V
C
CC
CC
≤ +12V
Figure 11
ONDITIONS
,
,
Figure 11
Figure 9
Figure 9
A
= +25°C.
Figure 12
Figure 10
Figure 10
Figure 10
SP338E
Figure 10
Figure 10