isl3330 Intersil Corporation, isl3330 Datasheet - Page 21

• Manufacturer Part Number: isl3330
• Description: 3.3v, ?15kv Esd Protected, Dual Protocol Rs-232/rs-485 Transceivers
• Manufacturer: Intersil Corporation

Typical Performance Curves
FIGURE 25. RS-485, DRIVER PROPAGATION DELAY vs
FIGURE 27. RS-485, DRIVER AND RECEIVER WAVEFORMS,
FIGURE 29. RS-485, DRIVER AND RECEIVER WAVEFORMS,
4
3
2
1
0
5
0
4
3
2
1
0
5
0
24
23
22
21
20
19
18
17
16
15
-40
D
D
Y
Z
Y
Z
R
Y
Y
DIFF
-25
TEMPERATURE (FAST DATA RATE)
LOW TO HIGH (SLOW DATA RATE, QFN ONLY)
LOW TO HIGH (MEDIUM DATA RATE)
= 54Ω, C
L
R
R
= 100pF
A
A
0
TEMPERATURE (°C)
TIME (400ns/DIV)
TIME (200ns/DIV)
t
DLH
21
R
R
25
DIFF
DIFF
= 54Ω, C
= 54Ω, C
t
DHL
V
50
CC
L
L
= 100pF
= 100pF
= V
L
= 3.3V, T
ISL3330, ISL3331
75
5
0
5
0
85
A
= +25°C; Unless Otherwise Specified (Continued)
FIGURE 26. RS-485, DRIVER SKEW vs TEMPERATURE
FIGURE 28. RS-485, DRIVER AND RECEIVER WAVEFORMS,
FIGURE 30. RS-485, DRIVER AND RECEIVER WAVEFORMS,
4
3
2
1
0
4
3
2
1
0
5
0
5
0
3.0
2.5
2.0
1.5
1.0
0.5
0
-40
Y
Z
Y
Z
R
DIFF
D
(FAST DATA RATE)
D
HIGH TO LOW (SLOW DATA RATE, QFN ONLY)
HIGH TO LOW (MEDIUM DATA RATE)
-25
Y
Y
= 54Ω, C
|t
PLHZ
L
= 100pF
0
TEMPERATURE (°C)
TIME (400ns/DIV)
TIME (200ns/DIV)
- t
R
PHLY
A
|t
DLH
|t
PHLZ
R
|
R
R
A
25
DIFF
DIFF
- t
DHL
- t
= 54Ω, C
= 54Ω, C
PLHY
|
|
50
L
L
= 100pF
= 100pF
May 20, 2008
75
FN6361.0
5
0
5
0
85