Datasheet

7
LTC2844
sn2844 2844fs
Figure 3. V.10/V.28 Driver Test Circuit
Figure 4. V.10/V.28 Receiver Test Circuit
A
D
2844 F04
C
L
R
A
A
D
2844 F03
R
L
C
L
TEST CIRCUITS
BLOCK DIAGRA
W
Figure 1. V.11 Driver Test Circuit
A
B
A
R
B
2844 F02
R
L
100Ω
C
L
100pF
C
L
100pF
C
L
A
B
2844 F01
V
OD
V
OC
R
L
R
L
Figure 2. V.11 Driver/Receiver AC Test Circuit
MODE
SELECTION
LOGIC
R2
R2A
R2B
R3
R3A
R3B
S3
20k
20k
20k
20k
S3
10k
6k
D3/R1 B
10k
10k
10k
D3
DCE/DTE
R1
D3
R1
6k
20k
20k
S3
10k
10k
2844 BD
6k
7
8
5
6
20
19
D2
D2A
D2B
D2
4
24
23
D1
D1A
D1B
D1
3
V
DD
2
V
CC
1
GND
27
V
EE
28
26
25
18
17
21
S3
20k
10k 6k
D4/R4 A
D4
R4
D4
9
10
M0
11
M1
12
M2
13
16
V
IN
1514
R2
R3
R4
D3/R1 A
25