Overview
The ISO6721BDR from Texas Instruments is a high-performance, dual-channel digital isolator designed for applications requiring robust isolation and low power consumption. This device is part of the ISO672xB series, which offers functional safety capabilities and is certified by various international standards such as DIN EN IEC 60747-17, UL 1577, and IEC 62368-1. The ISO6721BDR features two isolation channels with one channel in each direction, making it suitable for a wide range of applications including power supplies, grid and electricity meters, motor drives, factory automation, and building automation.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC1, VCC2) | 1.71 | - | 5.5 | V |
| Data Rate | 0 | - | 50 | Mbps |
| Isolation Rating | - | - | 3000 | VRMS |
| Common Mode Transient Immunity (CMTI) | 100 | 150 | - | kV/μs |
| Propagation Delay | - | 11 | - | ns |
| Ambient Temperature | -40 | - | 125 | °C |
| Maximum Power Dissipation (both sides) | - | - | 73 | mW |
| Package Type | - | - | Narrow-SOIC (D-8) | - |
Key Features
- Functional Safety-Capable with documentation to aid in functional safety system design.
- High data rate of up to 50 Mbps.
- Robust isolation barrier with up to 3000 VRMS isolation rating and ±150 kV/μs typical CMTI.
- Wide supply range: 1.71 V to 1.89 V and 2.25 V to 5.5 V.
- Level translation from 1.71 V to 5.5 V.
- Default output High (ISO672xB) and Low (ISO672xFB) options.
- Wide temperature range: -40°C to +125°C.
- Low power consumption: 1.8 mA per channel typical at 1 Mbps.
- Low propagation delay: 11 ns typical.
- Robust electromagnetic compatibility (EMC) with system-level ESD, EFT, and surge immunity.
- ±8 kV IEC 61000-4-2 contact discharge protection across the isolation barrier.
- Low emissions.
Applications
- Power supplies
- Grid and electricity meters
- Motor drives
- Factory automation
- Building automation
- Lighting
- Appliances
Q & A
- What is the maximum data rate of the ISO6721BDR?
The maximum data rate is up to 50 Mbps.
- What is the isolation rating of the ISO6721BDR?
The isolation rating is up to 3000 VRMS.
- What is the typical common mode transient immunity (CMTI) of the ISO6721BDR?
The typical CMTI is ±150 kV/μs.
- What is the operating temperature range of the ISO6721BDR?
The operating temperature range is -40°C to +125°C.
- What is the typical propagation delay of the ISO6721BDR?
The typical propagation delay is 11 ns.
- What kind of electromagnetic compatibility does the ISO6721BDR offer?
The device offers robust electromagnetic compatibility with system-level ESD, EFT, and surge immunity.
- What is the maximum power dissipation of the ISO6721BDR?
The maximum power dissipation is 73 mW for both sides.
- What certifications does the ISO6721BDR hold?
The device is certified according to DIN EN IEC 60747-17, UL 1577, IEC 62368-1, IEC 61010-1, and IEC 60601-1.
- What package type does the ISO6721BDR come in?
The device comes in a Narrow-SOIC (D-8) package.
- What is the default output state of the ISO6721BDR in case of input power or signal loss?
The default output is high for devices without the 'F' suffix.
