LTC1343 Linear Technology, LTC1343 Datasheet - Page 7

• Manufacturer Part Number: LTC1343
• Description: Software-Selectable Multiprotocol Transceiver
• Manufacturer: Linear Technology

TEST CIRCUITS
W
LTC1343 MODE NAME
V.10, RS423
EIA-530-A Clock and Data
EIA-530-A Control
Reserved
X.21
V.35 Clock and Data
V.35 Control
EIA-530, RS449, V.36
V.28, RS232
No Cable
ODE SELECTIO
Figure 4. V.10/V.28 Driver Test Circuit
Figure 1. RS422 Driver Test Circuit
A
B
V
D
OD
M2
0
0
0
0
0
1
1
1
1
1
A
U
R
50
R
50
L
L
D
C
L
M1
V
0
0
0
1
1
0
0
0
1
1
OC
B
A
1343 F01
R
L
1343 F04
Figure 3. V.35 Driver/Receiver Test Circuit
V
M0
0
1
1
0
1
0
0
1
0
1
OD
CTRL/CLK
50
50
125
X
1
X
X
0
1
X
X
X
0
V.10
V.10
V.10
V.10
V.10
V.28
V.28
V.10
V.28
D1
Z
V
CM
125
V.10
V.11
V.11
V.11
V.11
V.35
V.28
V.11
V.28
D2
Z
Figure 2. RS422 Driver/Receiver AC Test Circuit
Figure 5. V.10/V.28 Receiver Test Circuit
50
50
V.10
V.11
V.10
V.11
V.11
V.35
V.28
V.11
V.28
D3
Z
B
A
B
A
D
V.10
V.11
V.11
V.11
V.11
V.35
V.28
V.11
V.28
R
100
D4
Z
L
R
A
15pF
V.10
V.11
V.11
V.11
V.11
V.35
V.28
V.11
V.28
1343 F03
R1
Z
A
C
100pF
C
100pF
L
L
V.10
V.11
V.10
V.11
V.11
V.35
V.28
V.11
V.28
R2
R
Z
B
A
LTC1343
15pF
1343 F04
V.10
V.11
V.11
V.11
V.11
V.35
V.28
V.11
V.28
R3
Z
R
15pF
1343 F02
V.10
V.10
V.10
V.10
V.10
V.28
V.28
V.10
V.28
R4
Z
7