STISO621
Datasheet
Dual channel digital isolator
Features
•
•
•
•
•
•
•
•
•
•
Dual channel, digital isolator with 1 – 1 channel directionality
High data rate up to 100 Mbps
Wide Ta range operation: - 40ºC to 125ºC
High common-mode transient: >50k V/µs
From 3 V to 5.5 V supply levels
3.3 V and 5 V level translation
Low power consumption
Pulse width distortions < 3 ns
6k V Galvanic isolation
SO8 narrow and wide package options
Application
•
•
•
•
Optocoupler replacement in industrial application
Industrial field bus isolation
Battery monitor and motor drive
Size-critical multichannel isolation
Description
Product status link
STISO621
Product label
The
STISO621
are dual-channel digital isolators based on the ST thick oxide
galvanic isolation technology. The devices provide two independent channels in
opposite direction with Schmitt trigger input, providing robustness to noise and high
speed input/output switching time.
DS13394
-
Rev 2
-
March 2021
For further information contact your local STMicroelectronics sales office.
www.st.com
STISO621
Block diagram
1
Block diagram
Figure 1.
Block diagram
TX1
TX
RX
RX2
RX1
RX
TX
TX2
DS13394
-
Rev 2
page 2/21
STISO621
Electrical data
2
Electrical data
2.1
Absolute maximum ratings
Table 1.
Absolute maximum ratings
Symbol
V
DDX
V
IN
I
O
T
j
Parameter
Supply voltage (each side)
Logic input voltage
Output current
Junction temperature
Test Condition
Value
-0.3 to 7
-0.3 to 7
5
-40 to 150
Unit
V
V
mA
°C
2.2
Electrical sensitivity
Table 2.
ESD protection ratings
Symbol
HBM
CDM
MM
Parameter
Human Body Model
Charge Device Model
Machine Model
Test Condition
Conforming to ANSI/ESDA/JEDEC JS-001-2014
All pins
Conforming to ANSI/ESDA/JEDEC JS-002-2014
Conforming to EIA/JESD22-A115-C
Class
H2
C2B
NC
Value
+/- 2
+/- 750
+/- 200
Unit
kV
V
V
2.3
Recommended operating conditions
Table 3.
Recommended operating conditions
Symbol
V
DDX
V
IN
T
amb
Parameter
Supply voltage (each side)
Logic input voltage
Ambient temperature
Test
Condition
Min
3
0
-40
Typ
Max
5.5
5
125
Unit
V
V
°C
2.4
Electrical caracteristic
Table 4.
Electrical characteristics at VDD1 = VDD2 = 5V
Symbol
V
DDXon
V
DDXhyst
IDDX
Parameter
V
DDX
on threshold
V
DDX
off hysteresis
Supply current
Test condition
V
DDX
rising from 0 V
V
DDX
falling from 5 V
DC
10 Mbps,
1.65
3.65
Min.
Typ.
Max.
2.8
0.1
2
5
Unit
V
V
mA
mA
DS13394
-
Rev 2
page 3/21
STISO621
Electrical caracteristic
Symbol
Parameter
Test condition
C
L
= 20 pF
Min.
Typ.
Max.
Unit
IDDX
Supply current
100 Mbps,
C
L
= 20 pF
18
20
mA
V
IHL
Low level Schmitt trigger
threshold
High level Schmitt trigger
threshold
Schmitt trigger input hysteresis
Low level output voltage
High level output voltage
Output impedance
Maximum data rate
Output rise time
Output fall time
Propagation delay H to L
Propagation delay L to H
Power-up time
Refresh time
Watchdog timeout
Pulse width distortion
|t
DHL
– t
DLH
|
Common mode transient
immunity
Logic input falling
Full supply range
Logic input rising
Full supply range
0.8
V
V
ILH
VI
Hyst
V
OL
V
OH
Z
O
f
MAX
t
r
t
f
t
DHL
t
DLH
t
POWUP
t
REFRESH
t
WD
PWD
CMTI
2
0.5
V
V
V
V
I
OH
= 4 mA
I
OL
= 4 mA
V
DDX
–
0.3
-40%
V
IH
= 5 V
C
L
= 15 pF
C
L
= 15 pF
See
Figure 3
See
Figure 3
100
2
2
25
25
50
0.4
+40%
Ω
Mbps
4
4
42
42
30
ns
ns
ns
ns
µs
µs
µs
ns
kV/µs
1
2
Full temperature range
(1)
(2)
2
6
3
50
65
1. Not tested in production. Limit is guaranteed by characterization on a limited number of samples representing the worst
case of production flow.
2. Not tested in production. Limit is guaranteed by characterization on a limited number of samples and simulations.
Note:
Testing conditions: Typical values are defined at T
amb
= 25°C and VDD1 = VDD2 = 5 V, minimum and
maximum limits applies to the full temperature range (Tested in production at T
amb
= 25°C and the
limits in the full temperature range are guaranteed by characterization on a limited quantity of samples),
unless otherwise specified.
Table 5.
Electrical characteristics at VDD1 = VDD2 = 3V
Symbol
V
DDXon
V
DDXhyst
Parameter
V
DDX
on threshold
V
DDX
off hysteresis
Test condition
V
DDX
rising from 0 V
V
DDX
falling from 5 V
DC
10 Mbps,
I
DDX
Supply current
C
L
= 20 pF
100 Mbps,
C
L
= 20 pF
1.5
3
Min.
Typ.
Max.
2.8
0.1
2
5
Unit
V
V
mA
mA
11
20
mA
DS13394
-
Rev 2
page 4/21
STISO621
Electrical caracteristic
Symbol
V
IHL
Parameter
Low level Schmitt trigger threshold
Test condition
Logic input falling
Full supply range
Logic input rising
Full supply range
Min.
0.8
Typ.
Max.
Unit
V
V
ILH
V
IHyst
V
OL
V
OH
Z
O
f
MAX
t
r
t
f
tDHL
t
DLH
t
POWUP
t
REFRESH
t
WD
PWD
CMTI
High level Schmitt trigger threshold
Schmitt trigger input hysteresis
Low level output voltage
High level output voltage
Output impedance
Maximum data rate
Output rise time
Output fall time
Propagation delay H to L
Propagation delay L to H
Power-up time
Refresh time
Watchdog timeout
Pulse width distortion
|t
DHL
– t
DLH
|
Common mode transient immunity
2
0.5
V
V
V
V
I
OH
= 4 mA
I
OL
= 4 mA
VDDX –
0.3
-40%
V
IH
= 3.3 V
C
L
= 15 pF
C
L
= 15 pF
See
Figure 3
See
Figure 3
100
1.5
1.5
25
25
50
0.4
+40%
Ω
Mbps
4
4
42
42
30
ns
ns
ns
ns
µs
µs
µs
ns
kV/µs
1
2
Full temperature range
(1)
(2)
2
6
3
50
65
1. Not tested in production. Limit is guaranteed by characterization on a limited number of samples representing the worst
case of production flow.
2. Not tested in production. Limit is guaranteed by characterization on a limited number of samples and simulations.
Note:
Testing conditions: Typical values are defined at Tamb = 25°C and VDD1 = VDD2 = 3 V, minimum and
maximum limits applies to the full temperature range (Tested in production at T
amb
= 25°C and the
limits in the full temperature range are guaranteed by characterization on a limited quantity of samples),
unless otherwise specified.
DS13394
-
Rev 2
page 5/21
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