ISO7420FE Datasheet, PDF (5/19 Pages) Texas Instruments – Low-Power Dual Channel Digital Isolators

ISO7420E, ISO7420FE
ISO7421E, ISO7421FE
www.ti.com
SLLSE45B – DECEMBER 2010 – REVISED JANUARY 2011
ELECTRICAL CHARACTERISTICS
V_CC1 = 5V ± 10%, V_CC2 = 3.3V ± 10%, T_A = -40°C to 125°C
PARAMETER
TEST CONDITIONS
MIN
V_OH
High-level output voltage
I_OH = –4 mA; ISO7421x (5V side)
see Figure 1. _{ISO7420x/7421x (3.3V side)}
I_OH = –20 mA; ISO7421x (5V side)
see Figure 1, _{ISO7420x/7421x (3.3V side)}
V_CC1 – 0.8
V_CC2 - 0.4
V_CC1 – 0.1
V_CC2 – 0.1
V_OL
Low-level output voltage
I_OL = 4 mA; see Figure 1.
I_OL = 20 mA; see Figure 1.
V_I(HYS) Input threshold voltage hysteresis
I_IH
High-level input current
I_IL
Low-level input current
INx at 0 V or V_CC
–10
CMTI
Common-mode transient immunity
V_I = V_CC or 0 V; see Figure 3.
25
SUPPLY CURRENT (All inputs switching with square wave clock signal for dynamic I_CC measurement)
ISO7420x
I_CC1
I_CC2
I_CC1
I_CC2
I_CC1
I_CC2
I_CC1
I_CC2
Supply current for V_CC1 and V_CC2
ISO7421x
DC to 1 Mbps
DC Input: V_I = V_CC or 0 V,
AC Input: C_L = 15pF
10 Mbps
25 Mbps
50 Mbps
C_L = 15pF
I_CC1
I_CC2
I_CC1
I_CC2
I_CC1
I_CC2
I_CC1
I_CC2
Supply current for V_CC1 and V_CC2
DC to 1 Mbps
DC Input: V_I = V_CC or 0 V,
AC Input: C_L = 15pF
10 Mbps
25 Mbps
50 Mbps
C_L = 15pF
TYP MAX UNIT
4.6
3
V
5
3.3
0.2
0.4
V
0
0.1
400
mV
10 mA
mA
50
kV/ms
0.4
0.8
2.6
3.7
0.6
1
3.3
4.3
mA
1
1.5
4.4
5.6
1.7
2.5
6.2
7.5
2.3
3.6
1.8
2.8
2.9
4.2
2.2
3.2
mA
3.9
5.3
2.8
3.9
5.5
7
3.8
5
SWITCHING CHARACTERISTICS
V_CC1 = 5V ± 10%, V_CC2 = 3.3V ± 10%, T_A = -40°C to 125°C
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
t_PLH, t_PHL
PWD ⁽¹⁾
t_sk(o) ⁽²⁾
t_sk(pp) ⁽³⁾
t_r
t_f
t_fs
Propagation delay time
Pulse width distortion |t_PHL – t_PLH|
Channel-to-channel output skew time
Part-to-part skew time
Output signal rise time
Output signal fall time
Fail-safe output delay time from input power loss
See Figure 1.
See Figure 1.
See Figure 2.
8 13.5 ns
0.3
3 ns
1.5 ns
5.4 ns
2
ns
2
ns
6
ms
(1) Also known as pulse skew.
(2) t_sk(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) t_sk(pp) is the magnitude of the difference in propagation delay times between terminals of different devices switching in the same
direction while operating at identical supply voltages, temperature, input signals and loads.
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Product Folder Link(s): ISO7420E, ISO7420FE ISO7421E, ISO7421FE