GD75232 Datasheet, PDF (10/12 Pages) Texas Instruments – MULTIPLE RS-232 DRIVERS AND RECEIVERS

GD75232
MULTIPLE RS-232 DRIVERS AND RECEIVERS
SLLS206C – MAY 1995 – REVISED JULY 1998
TYPICAL CHARACTERISTICS
2.4
2.2
2
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0
INPUT THRESHOLD VOLTAGE
vs
FREE-AIR TEMPERATURE
VIT ₊
VIT _–
10 20 30 40 50 60 70
TA – Free-Air Temperature – °C
Figure 11
NOISE REJECTION
ÎÎÎÎ ⁶
VCC = 5 V
ÎÎÎÎ ^{TA = 25°C}
See Note A
ÎÎÎÎ ⁵
ÎÎÎÎ CC = 300 pF
ÎÎÎÎ 4
ÁÁÎÁÁÎÁÁÎÁÁÎÎ ₃
ÁÁÁÁ _{CC = 12 pF}
ÁÁÁÁ ₂
ÎÁÎÁÎÁÎÁÎ _{CC = 100 pF}
ÎÁÎÁÎÁÎÁÎ ₁
CC = 500 pF
0
10
40 100
400 1000
4000 10000
tw – Pulse Duration – ns
NOTE A: This figure shows the maximum amplitude of a
positive-going pulse that, starting from 0 V, does not
cause a change of the output level.
Figure 13
INPUT THRESHOLD VOLTAGE
vs
SUPPLY VOLTAGE
2
1.8
VIT ₊
1.6
1.4
1.2
1
VIT–
0.8
0.6
0.4
0.2
0
2 3 4 5 6 7 8 9 10
VCC – Supply Voltage – V
Figure 12
MAXIMUM SUPPLY VOLTAGE
vs
FREE-AIR TEMPERATURE
16
14
12
10
8
6
4
2
RL ≥ 3 kΩ (from each output to GND)
0
0 10 20 30 40 50 60 70
TA – Free-Air Temperature – °C
Figure 14
10
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