SLLSEP3F November 2016 – April 2023 ISO7720 , ISO7721
PRODUCTION DATA
- 1 Features
- 2 Applications
- 3 Description
- 4 Revision History
- 5 Pin Configuration and Functions
-
6 Specifications
- 6.1 Absolute Maximum Ratings
- 6.2 ESD Ratings
- 6.3 Recommended Operating Conditions
- 6.4 Thermal Information
- 6.5 Power Ratings
- 6.6 Insulation Specifications
- 6.7 Safety-Related Certifications
- 6.8 Safety Limiting Values
- 6.9 Electrical Characteristics—5-V Supply
- 6.10 Supply Current Characteristics—5-V Supply
- 6.11 Electrical Characteristics—3.3-V Supply
- 6.12 Supply Current Characteristics—3.3-V Supply
- 6.13 Electrical Characteristics—2.5-V Supply
- 6.14 Supply Current Characteristics—2.5-V Supply
- 6.15 Switching Characteristics—5-V Supply
- 6.16 Switching Characteristics—3.3-V Supply
- 6.17 Switching Characteristics—2.5-V Supply
- 6.18 Insulation Characteristics Curves
- 6.19 Typical Characteristics
- 7 Parameter Measurement Information
- 8 Detailed Description
- 9 Application and Implementation
- 10Power Supply Recommendations
- 11Layout
- 12Device and Documentation Support
- 13Mechanical, Packaging, and Orderable Information
Package Options
Refer to the PDF data sheet for device specific package drawings
Mechanical Data (Package|Pins)
- D|8
- DWV|8
- DW|16
Thermal pad, mechanical data (Package|Pins)
- DW|16
Orderable Information
3 Description
The ISO772x devices are high-performance, dual-channel digital isolators with 5000 VRMS (DW and DWV packages) and 3000 VRMS (D package) isolation ratings per UL 1577. This family includes devices with reinforced insulation ratings according to VDE, CSA, TUV and CQC.The ISO7721B device is designed for applications that require basic insulation ratings only.
The ISO772x devices provide high electromagnetic immunity and low emissions at low power consumption, while isolating CMOS or LVCMOS digital I/Os. Each isolation channel has a logic input and output buffer separated by a double capacitive silicon dioxide (SiO2) insulation barrier. The ISO7720 device has both channels in the same direction while the ISO7721 device has both channels in the opposite direction. In the event of input power or signal loss, the default output is high for devices without suffix F and low for devices with suffix F. See the Device Functional Modes section for further details.
Used in conjunction with isolated power supplies, these devices help prevent noise currents on data buses, such as RS-485, RS-232, and CAN , from damaging sensitive circuitry. Through innovative chip design and layout techniques, the electromagnetic compatibility of the ISO772x devices has been significantly enhanced to ease system-level ESD, EFT, surge, and emissions compliance. The ISO772x family of devices is available in 16-pin SOIC wide-body (DW), 8-pin SOIC wide-body (DWV), and 8-pin SOIC narrow-body (D) packages.
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| ISO7720, ISO7721 ISO7721F, ISO7721F | D (8) | 4.90 mm × 3.91 mm |
| DWV (8) | 5.85 mm × 7.50 mm | |
| DW (16) | 10.30 mm × 7.50 mm | |
| ISO7721B, ISO7721FB | DW (16) | 10.30 mm × 7.50 mm |
