LTC1545CG View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LTC1545CG Datasheet PDF : 16 Pages
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LTC1545
TEST CIRCUITS
D
A
CL
RL
1545 F03
Figure 3. V.10/V.28 Driver Test Circuit
D
AA
R
15pF
1545 F04
Figure 4. V.10/V.28 Receiver Test Circuit
W
U
ODE SELECTIO
LTC1545 MODE NAME
Not Used (Default V.11)
M2 M1 M0
D1
D2
0
0
0
V.11 V.11
RS530A
RS530
X.21
V.35
RS449/V.36
0
0
1
V.11 V.10
0
1
0
V.11 V.11
0
1
1 V.11 V.11
1
0
0 V.28 V.28
1
0
1
V.11 V.11
V.28/RS232
D4ENB = 1, R4EN = 0
M0 = M1 = M2 = 1
1
1
0
V.28 V.28
1
1
1
Z
Z
Note 1: Driver 3 and Receiver 1 are enabled (and disabled) by
DCE/DTE (Pin 14). Logic high enables Driver 3. Logic low enables
Receiver 1.
(Note 1) (Note 2)
(Note 1)
D3
D4
D5
R1
R2
V.11 V.10 V.10 V.11 V.11
V.11 V.10 V.10 V.11 V.10
V.11 V.10 V.10 V.11 V.11
V.11 V.10 V.10 V.11 V.11
V.28 V.28 V.28 V.28 V.28
V.11 V.10 V.10 V.11 V.11
V.28 V.28 V.28 V.28 V.28
Z
Z
Z
Z
Z
(Note 3)
R3 R4 R5
V.11 V.10 V.10
V.11 V.10 V.10
V.11 V.10 V.10
V.11 V.10 V.10
V.28 V.28 V.28
V.11 V.10 V.10
V.28 V.28 V.28
Z
Z
Z
Note 2: Driver 4 is enabled by D4ENB = 0 (Pin 15).
Note 3: Receiver 4 is enabled by R4EN = 1 (Pin 16).
UW
W
SWITCHI G TI E WAVEFOR S
5V
D
0V
VO
B–A
–VO
A
B
1.5V
tPLH
50%
tr
90%
10%
f = 1MHz : tr ≤ 10ns : tf ≤ 10ns
VDIFF = V(B) – V(A)
1/2 VO
VO
tSKEW
Figure 5. V.11 Driver Propagation Delays
1.5V
tPHL
90%
50%
10%
tf
tSKEW
1545 F05
6
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