ISO1228DFBR

Overview

The ISO1228DFBR is an eight-channel isolated digital input receiver manufactured by Texas Instruments. It operates with supply voltages between 24 V and 36 V and provides 3000Vrms isolation. The device supports a data rate of 1.5 Mbps and offers a common mode transient immunity of 50 kV/µs. Power dissipation is rated at 565 mW. It is housed in a 38-pin SSOP (DFB) package and functions as a unidirectional digital isolator.

Feature Summary

• Configurable IEC 61131-2 Type 1, 2, or 3 isolated digital inputs
• Integrated current limiting and LED indication
• Low power consumption and heat dissipation

Applications

• Industrial automation control systems
• Programmable logic controller (PLC) input modules
• Factory floor sensor interfacing

Procurement Notes

Verify the complete part number including the DFB suffix to ensure the correct SSOP package and temperature range are obtained. Confirm that the application requires the specific 24 V to 36 V operating voltage range. Check for moisture sensitivity handling requirements during storage and assembly processes.

Selection Notes

Select this component when eight isolated digital inputs are required in a compact form factor. It is suitable for environments demanding high common mode transient immunity. Ensure the system voltage aligns with the 24 V to 36 V input specification before integration.

Part Context

This device belongs to the ISO1228 family of digital isolators designed for industrial applications. It integrates isolation barriers with digital input conditioning. The family focuses on providing reliable signal transmission in noisy electrical environments while maintaining safety standards.

Replacement Considerations

No public confirmed substitute part numbers are available.