NVE IL521-3E

The IL521-3E DC-correct dual channel digital isolators from NVE are a low-cost isolator alternative to opto-couplers, operating up to 2 Mbps over an operating temperature range of −40ºC to 85ºC. These devices use NVE’s patented IsoLoop® spintronic Giant Magnetoresistive (GMR) technology. A unique ceramic/polymer composite barrier provides excellent isolation and virtually unlimited barrier life. The IL521-3E from NVE have a pulse width distortion of 10ns with an isolation of 2.5KV_RMS and a transient immunity of 50kV/microsecond, internal refresh clock which ensures the synchronisation of input and output within 9 μs of the supply passing the 1.5 V threshold.

• Surface-mount DC-correct digital isolator
• Multidirectional two channel isolation
• Power supply between 3V and 5V
• Maximum speed of 2Mbps
• Typical quiescent current of 0.0013A/channel
• High voltage endurance of 1000V_RMS/1500V_DC
• Temperature range of −40°C to +85°C
• Common mode transient immunity of 30 kV/μs min. and 50 kV/μs typ.
• Low EMC footprint
• Pulse width distortion of 10ns
• Propagation delay of 25ns
• Barrier life of 44000 years
• UL 1577 recognised; IEC 60747-5-5 (VDE 0884) certified
• 8-pin SOIC package

The IL521 isolators can be used with Power on Reset (POR) circuits common in microcontroller applications, as the means of ensuring the output of the device is in the same state as the input a short time after power up.

The NVE IL521 series DC-correct two channel digital isolators are ideal for the following applications

• ADC’s and DAC’s
• Digital filedbus
• Multiplexed data transmission
• Data interfaces
• Board to board communication
• Digital noise reduction
• Ground loop elimination
• Parallel bus
• Peripheral interfaces
• Logic level shifting

The below table gives the recommended operating conditions of the NVE IL521 DC-correct two channel digital isolator series including the IL521-3E: