ISL3330_14 Datasheet, PDF (19/25 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
30
25
V_OH, +25°C
20 _{VOH, +85°C}
15
V_OL, +25°C
V_OL, +85°C
3.5
3.0
2.5
2.0
I_OH = -0.5mA
1.5 ^IOH ^{= -1mA}
10
1.0
I_OH = -6mA
5
0
0.0
1.0
2.0
RECEIVER OUTPUT VOLTAGE (V)
3.0 3.3
FIGURE 13. RECEIVER OUTPUT CURRENT vs RECEIVER
OUTPUT VOLTAGE
0.5
I_OH = -2mA
0
1.0
1.5
2.0
2.5
3.0 3.3
V_L (V)
FIGURE 14. RECEIVER HIGH OUTPUT VOLTAGE vs LOGIC
SUPPLY VOLTAGE (V_L) (QFN ONLY)
90
80
70
60
50
40
30
20
10
0
0
0.5
1.0 1.5
2.0 2.5
3.0 3.5
DIFFERENTIAL OUTPUT VOLTAGE (V)
FIGURE 15. RS-485, DRIVER OUTPUT CURRENT vs
DIFFERENTIAL OUTPUT VOLTAGE
2.30
2.25
R_DIFF = 100Ω
2.20
2.15
2.10
2.05
2.00
R_DIFF = 54Ω
1.95
1.90
-40 -25
0
25
50
TEMPERATURE (°C)
75 85
FIGURE 16. RS-485, DRIVER DIFFERENTIAL OUTPUT
VOLTAGE vs TEMPERATURE
250
+85°C
+25°C
200
150
-40°C
100
50
Y OR Z = LOW
0
-50
+85°C
+25°C
Y OR Z = HIGH
-100
-40°C
-150
-7 -6 -4 -2 0
2
4
6
8 10 12
OUTPUT VOLTAGE (V)
FIGURE 17. RS-485, DRIVER OUTPUT CURRENT vs SHORT
CIRCUIT VOLTAGE
19
4.5
RS-232, RXEN, RXEN, ON = X, DEN = V_CC
4.0
3.5
3.0
RS-232, RXEN, RXEN = X, ON = V_CC, DEN = GND
2.5
2.0 RS-485, HALF DUPLEX, DEN = V_CC, RXEN, RXEN, ON = X
RS-485, FULL DUPLEX, DEN = V_CC, RXEN, RXEN, ON = X
1.5
RS-485, DEN = GND, RXEN, RXEN = X, ON = V_CC
1.0-40 _-25
0
25
50
75 85
TEMPERATURE (°C)
FIGURE 18. SUPPLY CURRENT vs TEMPERATURE
FN6361.0
May 20, 2008