Description
The ISO7520 and ISO7521 provide double galvanic isolation of up to 5 KVrms for 1 minute per UL. These digital isolators have two isolated channels with uni-directional (ISO7520) and bi-directional (ISO7521) channel configurations. Each isolation channel has a logic input and output buffer separated by a silicon oxide (SiO2) insulation barrier. Used in conjunction with isolated power supplies, these devices prevent noise currents on a data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuitry.
Note: The devices have TTL input thresholds and require two supply voltages, 3.3V or 5V, or any combination. All inputs are 5-V tolerant when supplied from a 3.
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Features
- Highest Signaling Rate: 1 Mbps
- Propagation Delay Less Than 20 ns
- Low Power Consumption
- Wide Ambient Temperature: –40°C to 105°C
- Safety and Regulatory Approvals
- 5 KV(rms) for 1 minute per UL 1577
- CSA Component Acceptance Notice 5A
- IEC 60747-5-2 (VDE 0884 Rev. 2)
- IEC 60601-1, 60950-1, & 61010-1 End Equipment Standards
- 50 kV/µs Transient Immunity Typical
- Operates From 3.3V or 5V Supply and Logic Levels
- APPLICATIONS
- Opto-Coupler Replacement in:
- Medical Applications for IEC 60601-1 (5 KVrms Rated)
- Industrial Field-Bus
- ProfiBus
- ModBus
- DeviceNetTM Data Buses
- Servo Control Interface
- Motor Control
View All Features in Datasheet
Parametrics
| |
ISO7521C |
| Number of Channels |
2 |
| Channel Configuration |
1/1 |
| Insulation Rating(VRMS) |
5000 |
| Supply Voltage(s)(V) |
3.3, 5 |
| Datarate(Mbps) |
1 |
| Input Noise Filter |
No |
| Prop Delay(Max)(ns) |
14 |
| TTL/CMOS Input Threshold |
TTL |
| Rating |
Catalog |
| Operating Temperature Range(°C) |
-40 to 105 |
| Approx. Price (US$) |
1.70 | 1ku |
| Pin/Package |
16SOIC |
| Thermal Shutdown |
No |
|
