ISL43485 Intersil Corporation, ISL43485 Datasheet - Page 9

• Manufacturer Part Number: ISL43485
• Description: 3.3V/ Low Power/ 30Mbps/ RS-485/RS-422
• Manufacturer: Intersil Corporation

Typical Performance Curves
FIGURE 10. DRIVER OUTPUT CURRENT vs SHORT CIRCUIT
-100
-120
-1.5
FIGURE 6. DRIVER AND RECEIVER WAVEFORMS DRIVING
FIGURE 8. DRIVER OUTPUT CURRENT vs DIFFERENTIAL
160
140
120
100
-20
-40
-60
-80
1.5
80
60
40
20
-3
100
110
5
0
3
0
0
90
80
70
60
50
40
30
20
10
-7 -6
0
0
DI = 30Mbps
A - B
DRIVER+CABLE DELAY
RO
200 FEET OF CAT5 CABLE (DOUBLE
TERMINATED WITH 120
OUTPUT VOLTAGE
VOLTAGE
-4
0.5
DIFFERENTIAL OUTPUT VOLTAGE (V)
Y OR Z = LOW
-2
1
OUTPUT VOLTAGE (V)
0
TIME (20ns/DIV)
1.5
9
2
(~290ns)
Y OR Z = HIGH
Ω
2
4
)
6
V
2.5
CC
= 3.3V, T
8
3
10
A
= 25°C; Unless Otherwise Specified
5
0
3.5
12
ISL43485
-1.5
FIGURE 7. DRIVER AND RECEIVER WAVEFORMS DRIVING
FIGURE 9. DRIVER DIFFERENTIAL OUTPUT VOLTAGE vs
1.5
800
750
700
650
600
-3
5
0
3
0
2.9
2.8
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2
FIGURE 11. SUPPLY CURRENT vs TEMPERATURE
-40
-40
ISL83483/85, DE = RE = GND; ISL83491, DE = X, RE = GND;
DI = 20Mbps
A - B
DRIVER+CABLE DELAY
-25
-25
300 FEET OF CAT5 CABLE (DOUBLE
TERMINATED WITH 120
TEMPERATURE
RO
ISL83483/85, DE = V
TEMPERATURE (°C)
0
TEMPERATURE (°C)
0
TIME (20ns/DIV)
ISL83488/90
R
(~425ns)
25
25
DIFF
CC
Ω
, RE = X
)
= 100Ω
50
50
R
DIFF
= 54Ω
75
75
5
0
85
85