Texas Instruments ISO7520C
The ISO7520C and ISO7521C provide galvanic isolation of up to 4243 VRMS for 1 minute per UL and 6000 VPK per VDE. These devices are also certified to 5000 VRMS reinforced insulation per end equipment standards IEC 60950-1, IEC 61010-1, and IEC 60601-1. These digital isolators have two isolated channels with unidirectional (ISO7520C) and bidirectional (ISO7521C) channel configurations.FEATURES
●1 Highest Signaling Rate: 1 Mbps● Propagation Delay Less Than 20 ns
● Low-Power Consumption
● Wide Ambient Temperature: –40°C to 105°C
● 50 kV/µs Transient Immunity Typical
● Operates From 3.3-V or 5-V Supply and Logic Levels
● 3.3-V and 5.0-V Level Translation
● Safety and Regulatory Approvals – 6000 VPK Isolation per DIN V VDE V 0884-10 and DIN EN 61010-1 – 4243 VRMS Isolation for 1 Minute per UL 1577 – CSA Component Acceptance Notice 5A, IEC 60950-1, IEC 61010-1, and IEC 60601-1 End Equipment Standards – TUV 5000 VRMS Isolation per EN 60950-1 and EN 61010-1 – CQC Certification per GB4943.1-2011 2
APPLICATIONS
● Opto-Coupler Replacement in: – Industrial Field-Buses – ProfiBuses – ModBuses – DeviceNet™ Data Buses – Servo Control Interfaces – Motor Control – Power Supplies – Battery Packs 3DESCRIPTION
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.