LTC1344 Linear Technology, LTC1344 Datasheet - Page 5

• Manufacturer Part Number: LTC1344
• Description: Software-Selectable Cable Terminator
• Manufacturer: Linear Technology

W
LTC1344
MODE NAME
V.10/RS423
RS530A
Reserved
X.21
V.35
RS530/RS449/V.36
V.28/RS232
No Cable
X = don’t care, 0 = logic low, 1 = logic high
ODE SELECTIO
A
B
ON
S1
V.11 Mode
R1
51.5
R2
51.5
DCE/DTE
OFF
S2
X
0
1
0
1
0
1
0
1
0
1
X
X
U
C
124
R3
M2
0
0
0
0
0
0
0
1
1
1
1
1
1
A
B
M1
0
0
0
1
1
1
1
0
0
0
0
1
1
Figure 3. LTC1344 Modes
ON
S1
R1
51.5
R2
51.5
V.35 Mode
M0
0
1
1
0
0
1
1
0
0
1
1
0
1
ON
S2
C
V.11
V.35
V.35
V.11
R1
124
Z
Z
Z
Z
Z
Z
Z
Z
Z
R3
V.11
V.35
V.35
V.11
R2
Z
Z
Z
Z
Z
Z
Z
Z
Z
A
B
OFF
S1
V.11
V.35
V.11
R3
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
R1
51.5
R2
51.5
Hi-Z Mode
OFF
S2
V.11
V.11
V.11
V.35
V.11
V.11
R4
Z
Z
Z
Z
Z
Z
Z
C
124
R3
1344 F03
LTC1344
V.11
V.11
V.11
V.11
V.11
V.35
V.35
V.11
V.11
V.11
R5
Z
Z
Z
V.11
V.11
V.11
V.11
V.11
V.35
V.35
V.11
V.11
V.11
R6
Z
Z
Z
5