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ISO7421E Datasheet(PDF) 5 Page - Texas Instruments

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Part # ISO7421E
Description  Low-Power Dual Channel Digital Isolators
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

ISO7421E Datasheet(HTML) 5 Page - Texas Instruments

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ISO7420E, ISO7420FE, ISO7420FCC
ISO7421E, ISO7421FE, ISO7421FCC
www.ti.com
SLLSE45D
– DECEMBER 2010 – REVISED DECEMBER 2011
ELECTRICAL CHARACTERISTICS
VCC1 = 5V ± 10%, VCC2 = 3.3V ± 10%, TA = -40°C to 125°C
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
IOH = –4 mA;
ISO7421x (5V side)
VCC1 – 0.8
4.6
see Figure 1.
ISO7420x/7421x (3.3V side)
VCC2 - 0.4
3
VOH
High-level output voltage
V
IOH = –20 μA;
ISO7421x (5V side)
VCC1 – 0.1
5
see Figure 1,
ISO7420x/7421x (3.3V side)
VCC2 – 0.1
3.3
IOL = 4 mA; see Figure 1.
0.2
0.4
VOL
Low-level output voltage
V
IOL = 20 μA; see Figure 1.
0
0.1
VI(HYS)
Input threshold voltage hysteresis
400
mV
IIH
High-level input current
10
μA
INx at 0 V or VCC
IIL
Low-level input current
–10
μA
CMTI
Common-mode transient immunity
VI = VCC or 0 V; see Figure 3.
25
50
kV/
μs
SUPPLY CURRENT (All inputs switching with square wave clock signal for dynamic ICC measurement)
ISO7420x
ICC1
0.4
0.8
DC Input: VI = VCC or 0 V,
DC to 1 Mbps
AC Input: CL = 15pF
ICC2
2.6
3.7
ICC1
0.6
1
10 Mbps
ICC2
3.3
4.3
Supply current for VCC1 and VCC2
mA
ICC1
1
1.5
25 Mbps
CL = 15pF
ICC2
4.4
5.6
ICC1
1.7
2.5
50 Mbps
ICC2
6.2
7.5
ISO7421x
ICC1
2.3
3.6
DC Input: VI = VCC or 0 V,
DC to 1 Mbps
AC Input: CL = 15pF
ICC2
1.8
2.8
ICC1
2.9
4.5
10 Mbps
ICC2
2.2
3.2
Supply current for VCC1 and VCC2
mA
ICC1
4.3
6
25 Mbps
CL = 15pF
ICC2
2.8
4.1
ICC1
6
8.5
50 Mbps
ICC2
3.8
5.5
SWITCHING CHARACTERISTICS
VCC1 = 5V ± 10%, VCC2 = 3.3V ± 10%, TA = -40°C to 125°C
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
E-grade
8
13.5
tPLH, tPHL
Propagation delay time
ns
CC-grade
18
32
See Figure 1.
ISO7420x
0.3
3
PWD(1)
Pulse width distortion |tPHL – tPLH|
ns
ISO7421x
0.5
5.6
ISO7420x
1.5
tsk(o)
(2)
Channel-to-channel output skew time
ns
ISO7421x
0.5
3
ISO7420x
5.4
tsk(pp)
(3)
Part-to-part skew time
ns
ISO7421x
6.3
tr
Output signal rise time
2
ns
See Figure 1.
tf
Output signal fall time
2
ns
tfs
Fail-safe output delay time from input power loss
See Figure 2.
6
μs
(1)
Also known as pulse skew.
(2)
tsk(o) is the skew between outputs of a single device with all driving inputs connected together and the outputs switching in the same
direction while driving identical loads.
(3)
tsk(pp) is the magnitude of the difference in propagation delay times between any terminals of different devices switching in the same
direction while operating at identical supply voltages, temperature, input signals and loads.
Copyright
© 2010–2011, Texas Instruments Incorporated
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Product Folder Link(s): ISO7420E ISO7420FE ISO7420FCC ISO7421E ISO7421FE ISO7421FCC


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