DS90C185SQX

Overview

The DS90C185SQX is a high-speed LVDS serializer manufactured by National Semiconductor, designed for parallel-to-serial data conversion. It accepts up to 24-bit parallel inputs and converts them into a differential serial output stream at a maximum data rate of 612.5 Mbps. The device operates on a single 3.3 V power supply and features low-voltage CMOS or TTL-compatible input logic levels. Packaged in a compact 48-pin TSSOP format, it supports surface-mount installation. This component facilitates reliable transmission of video and display data across printed circuit boards by reducing pin count and electromagnetic interference through Low-Voltage Differential Signaling.

Feature Summary

• Converts wide parallel data buses into a minimal number of differential serial pairs
• Supports low-voltage CMOS and TTL input logic standards for direct microcontroller interfacing
• Utilizes Low-Voltage Differential Signaling (LVDS) technology for noise immunity

Applications

• Flat panel display interfaces
• Video signal transmission systems
• Industrial control panels requiring long-distance signal integrity

Procurement Notes

Verify the manufacturer designation carefully, as Texas Instruments acquired National Semiconductor's analog and embedded processing portfolios. Ensure the specific suffix matches the required package and temperature range specifications. Confirm RoHS compliance status with the current supplier documentation before finalizing orders.

Selection Notes

Select this component when a system requires converting multiple parallel data lines into a serial LVDS link to save PCB routing space. Compare against similar serializers like the DS90C36x series if higher channel counts are needed. Verify that the target display controller supports the specific LVDS timing requirements defined in the datasheet.

Part Context

This part belongs to the National Semiconductor LVDS product family, which focuses on high-speed interface solutions for display applications. The 'SQ' suffix typically denotes the 48-pin Thin Shrink Small Outline Package (TSSOP). These devices were widely used in automotive and industrial displays prior to industry consolidation.

Replacement Considerations

Texas Instruments is the successor manufacturer for this product line. Direct equivalents include the DS90C365AMT/NOPB. Verify pin compatibility and electrical characteristics against the TI datasheet before substituting.