ISL3330_14 Datasheet, PDF (20/25 Pages) Intersil Corporation – 3.3V, ±15kV ESD Protected, Dual Protocol (RS-232/RS-485) Transceivers

ISL3330, ISL3331
Typical Performance Curves V_CC = V_L = 3.3V, T_A = +25°C; Unless Otherwise Specified (Continued)
50
NO LOAD
45 ^VIN ^{= V}L ^{or GND}
DEN, RXEN, ON = GND
40
V_L ≤ V_CC
35
30
RS-485, SLEW, SPB, RXEN = GND
25
V_L > V_CC
30
DEN, RXEN, DY, DZ/SLEW, ON = GND
NO LOAD
25 ^VIN ^{= V}L ^{OR GND}
RXEN = V_L
20
SPB = GND
RS-485 I_L
15
20
RS-232, RXEN = GND, SPB = V_L
15
10
5
0
1.0
1.5
RS-232, SPB, RXEN = V_L OR
RS-485, SLEW, SPB, RXEN = V_L
2.0
2.5
3.0
3.5
4.0
V_L (V)
FIGURE 19. RS-232, V_L SUPPLY CURRENT vs V_L VOLTAGE
(QFN ONLY)
RS-232/RS-485 I_CC
10
5
0
1.0
SPB = V_L
RS-485 I_L
1.5
2.0
2.5
V_L (V)
SPB = V_L
RS-232 I_L
3.0
3.5
4.0
FIGURE 20. V_CC and V_L SHDN SUPPLY CURRENTS vs V_L
VOLTAGE (QFN ONLY)
1640
R_DIFF = 54Ω, C_L = 100pF
1630
1620
1610
1600
t_DHL
1590
1580
t_DLH
1570
1560
t_DHL
1550
-40 -25
0
25
50
75 85
TEMPERATURE (°C)
FIGURE 21. RS-485, DRIVER PROPAGATION DELAY vs
TEMPERATURE (SLOW DATA RATE, QFN ONLY)
300
R_DIFF = 54Ω, C_L = 100pF
250
200
|t_PLHZ - t_PHLY|
|t_PHLZ - t_PLHY|
150
100
50
0
-40 -25
|t_DLH - t_DHL|
0
25
50
TEMPERATURE (°C)
75 85
FIGURE 22. RS-485, DRIVER SKEW vs TEMPERATURE
(SLOW DATA RATE, QFN ONLY)
550
R_DIFF = 54Ω, C_L = 100pF
545
540
535
530
525
t_DHL
520
t_DHL
t_DLH
515
-40 -25
0
25
50
75 85
TEMPERATURE (°C)
FIGURE 23. RS-485, DRIVER PROPAGATION DELAY vs
TEMPERATURE (MEDIUM DATA RATE)
16 _{RDIFF = 54Ω, CL = 100pF}
14
12
|t_PLHZ - t_PHLY|
10
8
|t_PHLZ - t_PLHY|
6
4
|t_DLH - t_DHL|
2
0-40 _-25
0
25
50
75 85
TEMPERATURE (°C)
FIGURE 24. RS-485, DRIVER SKEW vs TEMPERATURE
(MEDIUM DATA RATE)
20
FN6361.0
May 20, 2008