Single -channel High Speed CMOS Optocouplers
1
March 26, 2022
DS-QX0720 QX0721-V1.0-EN
QX0720 QX0721
1. Description
The QX0720 QX0721 (single-channel) is CMOS
optocouplers in SOP8 package. The optocouplers utilize
the latest CMOS IC technology to achieve outstanding
performance with very low power consumption. Basic
building blocks of QX0720 QX0721 are high speed LEDs
and CMOS detector ICs. Each detector incorporates an
integrated photodiode, a high-speed transimpedance
amplifier, and a voltage comparator with an output driver.
2. Features
+3.3V and +5V CMOS compatibility
25ns max. pulse width distortion
55ns max. propagation delay
40ns max. propagation delay skew
High speed: 15 MBd min
10 kV/μs minimum common mode rejection
–40°C to 105°C temperature range
Glitch-Free Power-UP Feature
3. Applications
Ground loop elimination
Digital field bus isolation:
- RS485, RS232, CANbus
Multiplexed data transmission
Computer peripheral interface
Microprocessor system interface
DC/DC converter
Servo Motor
4. Block Diagram and Package
5. Order Code
For example：
Truth Table:
SOP8
Order Code
Description
QX0720-CuH-S
15MBd, Copper lead frame,
SOP, Halogen-free
QX0721-CuH-S
25MBd, Copper lead frame,
SOP, Halogen-free
LED
VO, OUTPUT
OFF
H
ON
L
CAUTION: It is advised that normal static precautions be taken in handling and assembly of this component to
prevent damage or degradation which may be induced by ESD.
Single -channel High Speed CMOS Optocouplers
2
March 26, 2022
DS-QX0720 QX0721-V1.0-EN
QX0720 QX0721
6. Marking
●“ ”denotes LOGO.
●“X”denotes Data Rate : 0 (15 MBd), 1 (25 MBd).
●“Y”denotes YEAR: A(2018), B(2019), C(2020)….
●“WW”denotes WEEK
●“N”denotes WEEK Number 1, 2, 3, 4, 5, 6, 7
●“H”denotes Halogen-free, when the product has halogen/lead-free, blank here.
7. Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In
addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The
absolute maximum ratings are stress ratings only.
Parameter
Symbol
Min
Max
Units
Storage Temperature
T
STG
-55
+125
℃
Operating Temperature
T
AOT
-40
+105
Volts
Supply Voltages
V
DD
0
6.0
Volts
Output Voltage
V
O
-0.5
VDD+0.5
mA
Average Forward Input Current
I
F
-
10.0
mA
Average Output Current
Io
-
10.0
mA
Lead Solder Temperature
T
LST
260°C for 10 sec, 1.6 mm below seating plane
Solder Reflow Temperature Profile
See Solder Reflow Temperature Profile Section