USBN9603SLB/NOPB

Controllers Overview

The USBN9603SLB/NOPB is a Universal Serial Bus Full Speed Node Controller compatible with USB Specification versions 1.0 and 1.1. It integrates a high-speed transceiver, a 3.3V regulator, a Serial Interface Engine (SIE), seven endpoint FIFOs, an 8-bit parallel interface, and a clock generator. The device supports one bidirectional control endpoint (8 bytes) and six unidirectional endpoints (64 bytes each). It operates on a 24 MHz oscillator with internal 48 MHz clock generation and accepts a supply voltage of 3V to 5.5V. The component is housed in a 28-pin CSP package measuring 5.5x4.5 mm.

Controllers Feature Summary

• Integrates an advanced DMA mechanism for automatic CPU-independent data transfer of large bulk or isochronous packets.
• Supports fully static HALT mode with asynchronous wake-up capability for bus-powered applications.
• Features an enhanced input range 3.3V signal voltage regulator and low EMI design with low standby current.
• Provides versatile microcontroller interfacing via selectable non-multiplexed, multiplexed, or MICROWIRE/PLUS modes.

Controllers Applications

• USB software dongles and hardware encryption keys
• Portable consumer electronics requiring small footprint designs
• Embedded systems utilizing USB full-speed node connectivity

Controllers Procurement Notes

Verify the specific ordering suffix SLB to confirm the 28-CSP package variant. Confirm that the NOPB suffix indicates lead-free status and RoHS compliance. Check the manufacturer's official documentation for the current lifecycle status, as this component may be designated as not recommended for new designs.

Controllers Selection Notes

Select this controller when a compact CSP package is required for portable applications. Ensure the host system supports the necessary 8-bit parallel or serial interface modes. Verify that the application requires full-speed USB operation and can accommodate the external 24 MHz crystal oscillator circuitry.

Controllers Part Context

This component belongs to the USBN9603/USBN9604 family of USB node controllers. The USBN9603 specifically utilizes the small footprint CSP package, whereas the USBN9604 typically uses a standard SOIC package. Both devices share identical functional specifications and pinouts, differing primarily in physical packaging.

Controllers Replacement Considerations

The USBN9604-28M is a pin-to-pin compatible alternative offering the same functionality in a standard SOIC package. Designers should verify package dimensions and thermal characteristics when substituting between the CSP and SOIC variants.