DS3896MX

Overview

The DS3896MX is a high-performance, low-power quad universal asynchronous receiver-transmitter (QUAD UART) integrated circuit manufactured by National Semiconductor. It provides four independent serial communication channels within a single package, designed for applications requiring multiple serial interfaces in space-constrained environments. The device supports standard RS-232 and RS-422/RS-485 communication protocols, offering flexible data transmission capabilities. It features full hardware handshaking support and programmable baud rate generators to accommodate various communication speeds. The component is engineered for reliable operation with low power consumption, making it suitable for portable and battery-operated systems where efficient energy usage is critical alongside robust serial connectivity.

Feature Summary

• Integrates four independent UART channels into a compact single-chip solution
• Supports versatile communication standards including RS-232 and RS-422/RS-485
• Includes full hardware flow control signals for reliable data transfer management
• Features programmable baud rate generation for flexible speed configuration

Applications

• Industrial automation systems requiring multiple serial device connections
• Portable computing devices and embedded systems with limited board space
• Telecommunications equipment needing multi-channel serial interface capabilities
• Point-of-sale terminals and payment processing hardware

Procurement Notes

Verify the specific manufacturer source as National Semiconductor's semiconductor division has undergone corporate restructuring and acquisitions. Confirm current availability status through authorized distributors or legacy component suppliers, as original production may have ceased or transitioned to alternative manufacturers holding the rights to this part number. Ensure compatibility with existing system designs before procurement.

Selection Notes

Select this component when a design requires four distinct serial ports without consuming excessive printed circuit board area. Evaluate the voltage supply requirements against the target application's power rails. Consider the operating temperature range specifications to ensure reliability under expected environmental conditions. Verify that the supported baud rates and protocol options align with the connected peripheral devices' communication requirements.

Part Context

This component belongs to the family of serial interface controllers designed to simplify multi-port communication architectures. It consolidates functionality that would otherwise require multiple discrete UART chips, reducing component count and assembly complexity. Such integration is typical in mid-range embedded applications where cost and space efficiency are prioritized over extreme performance metrics found in specialized high-speed transceivers.

Replacement Considerations

Consult official datasheets for pin-compatible alternatives from current manufacturers who hold licensing rights to legacy National Semiconductor parts. Verify electrical parameter equivalence, particularly regarding supply voltage ranges and signal integrity characteristics. Ensure any substitute maintains the same package footprint and thermal dissipation properties to fit existing board layouts without modification.