ISL3259E Datasheet, PDF (12/15 Pages) Intersil Corporation – ±15kV ESD Protected, 100Mbps, 5V, PROFIBUS®, Full Fail-safe RS-485/RS-422 Transceivers

ISL3259E
Typical Performance Curves V_CC = 5V, T_A = +25°C; Unless Otherwise Specified (Continued)
9.0
0.9
|t_PLH - t_PHL|
8.8
0.8
8.6
8.4
0.7
8.2
t_PHL
8.0
0.6
7.8
0.5
7.6
t_PLH
7.4
0.4
7.2
7.0
-40
-15
10
35
60
85
TEMPERATURE (°C)
FIGURE 12. DRIVER DIFFERENTIAL PROPAGATION DELAY
vs TEMPERATURE
0.3
-40
-15
10
35
60
85
TEMPERATURE (°C)
FIGURE 13. DRIVER DIFFERENTIAL SKEW vs
TEMPERATURE
DI
5
0
R_DIFF = 54Ω, C_D = 50pF
5
0
RO
DI
5
0
R_DIFF = 54Ω, C_D = 50pF
5
0
RO
3
2
1
0
Y-Z
-1
-2
-3
TIME (5ns/DIV)
FIGURE 14. DRIVER AND RECEIVER WAVEFORMS
DI = 100Mbps
5.0
RO
0
V_CC = 4.75V
T = +85°C
5
0
DRIVER + CABLE DELAY (~150ns)
3.0
1.5
A-B
0
-1.5
-3.0
TIME (20ns/DIV)
FIGURE 16. WORST CASE (NEGATIVE) SINGLE PULSE
DRIVER AND RECEIVER WAVEFORMS DRIVING
100 FEET (31 METERS) OF CAT5 CABLE
(DOUBLE TERMINATED WITH 120Ω)
3
2
1
0
Y-Z
-1
-2
-3
TIME (5ns/DIV)
FIGURE 15. DRIVER AND RECEIVER WAVEFORMS
DI = 100Mbps
5.0
RO
0
V_CC = 4.75V
T = +85°C ₅
0
DRIVER + CABLE DELAY (~150ns)
3.0
1.5
0
A-B
-1.5
-3.0
TIME (20ns/DIV)
FIGURE 17. DRIVER AND RECEIVER SEVEN PULSE
WAVEFORMS DRIVING 100 FEET (31 METERS)
OF CAT5 CABLE (DOUBLE TERMINATED WITH
120Ω)
12
FN6587.0
November 13, 2007