sp306ct Exar Corporation, sp306ct Datasheet - Page 5

• Manufacturer Part Number: sp306ct
• Description: Rs-422/rs-423 Line Drivers/receivers
• Manufacturer: Exar Corporation

Figure 2. Control Input Configuration — SELECT A = 0, SELECT B = 1
Figure 3. Control Input Configuration — SELECT A = 1, SELECT B = 0
SIGNAL PROCESSING EXCELLENCE
Corporation
LOOPBACK = 1
SELECT A = 0
SELECT B = 1
LOOPBACK = 1
SELECT A = 1
SELECT B = 0
* Tri–state output
RS-423 DRIVER
T
R
R
R
OUT
T
T
IN
IN
IN
OUT
OUT
A1
T
* Tri–state output
RS-423 DRIVER
B2
B1
OUT
A1
R
R
T
T
R
B1
B2
IN
IN
OUT
OUT
IN
A2
A1
B 1
B1
A1
A2
14
22
8
7
+5V +12V –12V
28
V
GND
SELECT A
SELECT B
LOOPBACK
14
22
CC
8
7
+5V +12V –12V
28
SUPPLY
V
GND
LOOPBACK
SELECT A
SELECT B
1
V
CC
RS-423 RECEIVER
DD
SUPPLY
SP306
1
V
15
V
DD
RS-423 RECEIVER
EE
SP306
15
V
EE
R
R
T
OUT
OUT
IN
T
IN
B
LOOPBACK = 0
R
T
T
A
R
A
SELECT A = 0
SELECT B = 1
B
OUT
IN
IN
OUT
A
B
LOOPBACK = 0
SELECT A = 1
SELECT B = 0
A
B
T
R
T
T
RS-422 RECEIVER
OUT
R
R
IN
OUT
OUT
IN
IN
A1
T
B2
B1
T
T
A*1
OUT
RS-422 RECEIVER
B*1
B*2
R
R
OUT
OUT
R
IN
IN
IN
B *1
A2
A1
A*1
A*2
B1
14
22
8
7
+5V +12V –12V
28
V
GND
SELECT A
SELECT B
LOOPBACK
14
22
CC
8
7
+5V +12V –12V
28
SUPPLY
V
GND
LOOPBACK
SELECT A
SELECT B
1
V
CC
DD
SUPPLY
SP306
1
V
15
V
DD
EE
* Tri–state output
RS-422 DRIVER
SP306
15
V
EE
* Tri–state output
RS-422 DRIVER
R
R
T
OUT
OUT
IN
T
IN
B
R
T
T
R
A
A
B
OUT
IN
IN
OUT
A
B
A
B
93