ISO7420FE Datasheet, PDF (14/19 Pages) Texas Instruments – Low-Power Dual Channel Digital Isolators

ISO7420E, ISO7420FE
ISO7421E, ISO7421FE
SLLSE45B – DECEMBER 2010 – REVISED JANUARY 2011
TYPICAL CHARACTERISTICS (continued)
PROPAGATION DELAY TIME
vs
FREE-AIR TEMPERATURE
PROPAGATION DELAY TIME
vs
FREE-AIR TEMPERATURE
8
V_CC1 = V_CC2 = 5 V,
C_L = 15 pF
10.5
10
V_CC1 = V_CC2 = 3.3 V,
C_L = 15 pF
7.5
t_PLH
9.5
t_PLH
7
9
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t_PHL
6.5
8.5
t_PHL
8
6
-50 -25
0
25
50
75
100 125 150
T_A - Free-Air Temperature - °C
Figure 12.
7.5
-50 -25
0
25
50
75
100 125 150
T_A - Free-Air Temperature - °C
Figure 13.
INPUT V_CC FAIL-SAFE VOLTAGE THRESHOLD
vs
FREE-AIR TEMPERATURE
2.7
2.65
FS+
HIGH-LEVEL OUTPUT VOLTAGE
vs
HIGH-LEVEl OUTPUT CURRENT
6
T_A = 25°C
5
2.6
4
2.55
Output V_CC = 5 V
3
2.5
FS-
2.45
2.4
-50 -25
0
25
50
75
100 125 150
T_A - Free-Air Temperature - °C
Figure 14.
2
1
Output V_CC = 3.3 V
0
-80
-70
-60
-50
-40
-30
-20
-10
0
I_OH - High-Level Output Current - mA
Figure 15.
14
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