mxl1344a Maxim Integrated Products, Inc., mxl1344a Datasheet - Page 6

• Manufacturer Part Number: mxl1344a
• Description: Mxl1344a +5v Multiprotocol, Software-selectable Cable Terminator
• Manufacturer: Maxim Integrated Products, Inc.

The state of the MXL1344A’s mode-select pins, M0,
M1, M2, and DCE/DTE determines the mode of each of
the six termination networks.
erence of termination mode and select pin state for
Note: Z Indicates high impedance, 1 = high and 0 = low. Z, V.11, and V.35 refer to termination modes (Figure 4.)
+5V Multiprotocol, Software-Selectable
Cable Terminator
Figure 4. Termination Modes
6
Table 1. Termination Mode Select Table
V.10/RS-423
RS-530A
RS-530
X.21
V.35
RS-449/V.36
V.28/RS-232
No Cable
V.10/RS-423
RS-530A
RS-530
X.21
V.35
RS-449/V.36
V.28/RS-232
No Cable
_______________________________________________________________________________________
PROTOCOL
A
B
S1
CLOSED
R1
52Ω
R2
52Ω
OPEN
(a) V.11
S2
DCE/ DTE
MXL1344A
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
127Ω
R3
Table 1 shows a cross-ref-
M2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
C
A
B
M1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
M0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
S1
CLOSED
R1
52Ω
R2
52Ω
CLOSED
S2
(b) V.35
MXL1344A
V.35
V.11
V.35
V.11
R1
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
each of the six termination networks within the
MXL1344A.
127Ω
R3
V.35
V.11
V.35
V.11
R2
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
C
A
B
V.11
V.35
V.11
R3
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
Z
V.11
V.11
V.11
V.35
V.11
V.11
V.11
R4
R1
52Ω
R2
52Ω
Z
Z
Z
Z
Z
Z
Z
Z
Z
S1
OPEN
OPEN
S2
(c) Z
MXL1344A
V.11
V.11
V.11
V.35
V.11
V.11
V.11
V.11
V.11
V.35
V.11
V.11
127Ω
R5
Z
Z
Z
Z
R3
V.11
V.11
V.11
V.35
V.11
V.11
V.11
V.11
V.11
V.35
V.11
V.11
R6
Z
Z
Z
Z
C