NXP NPIC6C596APWJ: A 16-Bit Serial-In/Serial-Or Parallel-Out Shift Register with High-Voltage Output Latches

The NXP NPIC6C596APWJ is a highly integrated 16-bit shift register specifically engineered to deliver high-voltage output control from a low-voltage serial input. This device is designed to simplify the interface between microcontrollers and higher voltage loads, making it an ideal solution for applications requiring multiple output channels without proportional increases in system complexity or cost.

Functioning as a serial-in, serial-or parallel-out shift register, the NPIC6C596APWJ accepts data through a standard serial peripheral interface (SPI). The 16 bits of data are daisy-chained through the internal register and can be output either serially to cascade multiple devices or in parallel through the high-voltage output latches. This flexibility allows designers to easily scale the number of controlled outputs. A key feature of this IC is its integrated high-voltage open-drain output latches, capable of sinking significant current at voltages up to 50V. This eliminates the need for external drivers or transistors when controlling loads like relays, solenoids, LEDs, or incandescent lamps directly.

The device incorporates a power-saving serial data output, which allows for the daisy-chaining of multiple devices without loading the microcontroller's I/O pins. An internal data storage latch holds the output states until updated, ensuring stable control of connected peripherals. The NPIC6C596APWJ is particularly valuable in automotive and industrial environments, where its ability to operate with a wide supply voltage range and its robust ESD protection enhance system reliability. By reducing component count and simplifying PCB layout, this shift register offers a compact and cost-effective method for expanding a microcontroller's output capabilities into the high-voltage domain.

ICGOODFIND: The NPIC6C596APWJ is an efficient and robust solution for expanding digital output ports, enabling direct control of high-voltage and high-current peripherals with minimal microcontroller overhead and maximum design simplicity.

Keywords: Shift Register, High-Voltage Output, Serial Interface, Output Expander, Open-Drain.