NJU3718G

Serializers, Deserializers Overview

The NJU3718G is a 20-bit serial-to-parallel converter designed for MPU output port expansion. It utilizes CMOS technology and operates within a supply voltage range of 4.5 V to 5.5 V. The device accepts serial data synchronized with a clock frequency of up to 5 MHz, shifting it through an internal register before transferring it to parallel latches upon strobe activation. It features hysteresis input circuits for noise immunity and provides high-drive outputs capable of sourcing 25 mA per pin. The SOP-28 package contains 20 parallel outputs and one serial output terminal.

Serializers, Deserializers Feature Summary

• Provides 20-bit serial-to-parallel conversion capability for expanding microprocessor output ports using minimal interface lines.
• Incorporates Schmitt trigger input circuits to ensure wide noise margins and stable signal reception.
• Features high-current output buffers rated at 25 mA, allowing direct driving of loads such as LEDs without external components.

Serializers, Deserializers Applications

• Microprocessor output port expansion
• LED driver applications
• Motor driver interfaces

Serializers, Deserializers Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm the package type, as the base part number covers multiple physical outlines. Confirm end-of-life status and availability constraints prior to design finalization. Ensure power supply decoupling capacitors are placed close to the VDD and VSS pins to maintain operational stability during switching events.

Serializers, Deserializers Selection Notes

Select this component when a fixed 20-bit expansion is required rather than variable bit counts found in other series members. Verify that the system logic levels align with the specified input voltage thresholds. Consider cascade compatibility if additional bits are needed, ensuring the serial output connects correctly to subsequent devices like the NJU3711.

Serializers, Deserializers Part Context

The NJU3718 belongs to the NJU3718 series of serial-to-parallel converters manufactured by Nisshinbo Micro Devices. It serves as a dedicated interface solution for connecting microprocessors to peripheral devices requiring multiple parallel outputs. The G suffix specifically denotes the SOP-28 surface-mount package variant within this product family.

Serializers, Deserializers Replacement Considerations

The NJU3718AV is a documented alternative within the same series offering identical functional specifications. Designers should verify pinout compatibility and package dimensions when substituting between different suffix variants to ensure mechanical fit.