ISL43485_05 Datasheet, PDF (10/11 Pages) Intersil Corporation – 3.3V, Low Power, 30Mbps, RS-485/RS-422 Transceiver

ISL43485
Typical Performance Curves V_CC = 3.3V, T_A = 25°C; Unless Otherwise Specified (Continued)
16
R_DIFF = 54Ω
15
14
t_PLHZ
13
12
t_PLHY
11
10
t_PHLY
t_PHLY
9
t_PHLZ
8
-40 -25
0
25
50
TEMPERATURE (°C)
FIGURE 12. DRIVER PROPAGATION DELAY vs
TEMPERATURE
75 85
4
R_DIFF = 54Ω
FIGURE 2A
3.5
3
|t_PHLY - t_PLHZ|
2.5
2
1.5
|CROSSING PT. OF Y↑ & Z↓ -
CROSSING PT. OF Y↓ & Z↑|
1
0.5
-40 -25
|t_PLHY - t_PHLZ|
0
25
50
TEMPERATURE (°C)
75 85
FIGURE 13. DRIVER SKEW vs TEMPERATURE
DI
5
RO
0
R_DIFF = 54Ω, C_L = 15pF
5
0
3
2.5 _B/Z
2
1.5
1 _A/Y
0.5
0
TIME (10ns/DIV)
FIGURE 14. DRIVER AND RECEIVER WAVEFORMS,
LOW TO HIGH
Die Characteristics
SUBSTRATE POTENTIAL (POWERED UP):
GND
TRANSISTOR COUNT:
528
PROCESS:
Si Gate BiCMOS
DI
5
0
R_DIFF = 54Ω, C_L = 15pF
5
0
RO
3
2.5
A/Y
2
1.5
1
B/Z
0.5
0
TIME (10ns/DIV)
FIGURE 15. DRIVER AND RECEIVER WAVEFORMS,
HIGH TO LOW
10
FN6071.1
March 15, 2005