ISL3170E_08 Datasheet, PDF (14/19 Pages) Intersil Corporation – RS-485/RS-422 Transceivers

ISL3170E, ISL3171E, ISL3172E, ISL3173E, ISL3174E, ISL3175E, ISL3176E, ISL3177E, ISL3178E
Typical Performance Curves V_CC = 3.3V, T_A = +25°C; Unless Otherwise Specified (Continued)
32
0.95
31
0.90
30
29
0.85
28
27
26
t_PHL
25
t_PLH
24
23
22
-40 -25
0
25
50
TEMPERATURE (°C)
75 85
FIGURE 15. DRIVER DIFFERENTIAL PROPAGATION DELAY
vs TEMPERATURE (ISL3176E, ISL3177E,
ISL3178E)
0.80
0.75
0.70
0.65
|CROSS POINT OF Y↑ AND Z↓ − CROSS POINT OF Y↓ AND Z↑|
0.60
-40 -25
0
25
50
TEMPERATURE (°C)
75 85
FIGURE 16. DRIVER DIFFERENTIAL SKEW vs
TEMPERATURE (ISL3176E, ISL3177E, ISL3178E)
DI
5
RO
0
R_DIFF = 54Ω, C_D = 50pF
5
0
3.0
2.5 _B/Z
2.0
1.5
1.0 ^A/Y
0.5
0
TIME (400ns/DIV)
FIGURE 17. DRIVER AND RECEIVER WAVEFORMS,
LOW TO HIGH (ISL3170E, ISL3171E, ISL3172E)
DI
5
0
R_DIFF = 54Ω, C_D = 50pF
5
0
RO
3.0
2.5 A/Y
2.0
1.5
1.0
B/Z
0.5
0
TIME (400ns/DIV)
FIGURE 18. DRIVER AND RECEIVER WAVEFORMS,
HIGH TO LOW (ISL3170E, ISL3171E, ISL3172E)
14
FN6307.4
June 10, 2008