MAX13171E Datasheet, PDF (28/38 Pages) Maxim Integrated Products – Multiprotocol, Pin-Selectable Data Interface Chipset

Multiprotocol, Pin-Selectable
Data Interface Chipset
GENERATOR
UNBALANCED
INTERCONNECTING
CABLE
LOAD
CABLE
TERMINATION
A
A′
RECEIVER
C
Figure 18. Typical V.10/V.28 Interface
-10V
-3.25mA
Figure 19. Receiver Input Impedance Curve
C′
I_Z
-3V
+3V
+3.25mA
V_Z
+10V
A′ A
R5
55kΩ
R8
5kΩ
R6
11kΩ
S3
B′ B
+-
1.4V
R7
11kΩ
R4
55kΩ
S1
S2
C′
GND
MAX13171E
MAX13173E
RECEIVER
A′ A
R5
55kΩ
R8
5kΩ
R6
11kΩ
S3
MAX13173E
RECEIVER
C′
GND
Figure 20a. V.10 Internal Resistance Network for Receivers 1,
2, and 3
Figure 20b. V.10 Internal Resistance Network for Receivers 4
and 5
28 ______________________________________________________________________________________