Texas Instruments DS90CR483VJDX/NOPB

Overview

DS90CR483VJDX/NOPB from Texas Instruments is a 48-bit LVDS serializer IC that converts parallel CMOS/TTL data into eight LVDS data streams plus one LVDS clock channel, supporting input clock frequencies from 33 MHz to 112 MHz and delivering up to 5.38 Gbits/sec aggregate bandwidth. It operates from a +3.3 V supply, features pre-emphasis control via the PRE pin, DC-balanced transmission for ISI reduction, and flow-through pinout in a 100-lead TQFP package - deployed in high-resolution LCD panel interfaces and industrial camera links.

For engineers reviewing the DS90CR483VJDX/NOPB datasheet, DS90CR483VJDX/NOPB pinout, DS90CR483VJDX/NOPB application, or DS90CR483VJDX/NOPB equivalent, key selection criteria include confirmed 112 MHz max clock support, ±1 LVDS bit-time deskew capability (up to 80 MHz), 5 V-tolerant TxIN/control inputs, transmitter jitter rejection (<100 ps cycle-to-cycle), and compliance with ANSI/TIA/EIA-644-1995 LVDS standard.

Technical Context

The DS90CR483VJDX/NOPB implements a PLL-based LVDS serialization architecture with integrated pre-emphasis driver stages and cycle-to-cycle DC balancing logic. Its transmitter samples 48 parallel bits per clock cycle and maps them across eight differential pairs using either DC-balanced (BAL = HIGH) or non-DC-balanced encoding, with optional cable deskew calibration initiated via DS_OPT pin.

It supports three critical signal integrity enhancements: user-configurable pre-emphasis (via PRE pin voltage setting), real-time DC balance bit insertion to minimize long-term DC bias, and receiver-side deskew operation (enabled only in DC-balance mode) that adjusts sampling strobes over ±1 LVDS bit time with 0.3 TBIT step size - all enabling reliable operation over 5+ meter cables at up to 80 MHz clock rates.

Key Specifications

Pinout & Package

DS90CR483VJDX/NOPB is housed in a 100-lead Thin Quad Flat Package (TQFP) with 0.5 mm pitch, thermally enhanced for 2.3 W max power dissipation at 25°C. The flow-through pinout minimizes PCB trace crossings and simplifies layout for high-speed 48-bit parallel input routing.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LVDS serializer applications.

Compared with DS90CF564MTD/NOPB, DS90CR483VJDX/NOPB adds 20-bit wider data path, DC balance, and deskew - essential for 48-bit LCD and vision systems. Against SN65LVDS31PW, it delivers full Channel Link functionality including clock recovery, serialization, and skew management - eliminating need for external timing control logic.

Availability

DS90CR483VJDX/NOPB is available at Aetrix Electronics and suitable for high-resolution display interfaces, industrial machine vision systems, and medical imaging equipment requiring stable component supply, long-cable signal integrity, and deterministic latency.

Supply support for DS90CR483VJDX/NOPB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in high-speed interface solutions.

The DS90CR483VJDX/NOPB belongs to TI's Channel Link SER/DES product line, engineered specifically for replacing wide parallel TTL buses in display, imaging, and industrial video applications with compact, noise-immune LVDS links.

FAQ

What is the maximum supported input clock frequency for DS90CR483VJDX/NOPB?

The DS90CR483VJDX/NOPB supports an input clock frequency range of 33 MHz to 112 MHz. At 112 MHz, it achieves 672 Mbps per LVDS lane and 5.38 Gbps aggregate bandwidth. Operation above 112 MHz is not specified or guaranteed; exceeding this limit may cause timing violations or failed PLL lock.

Does DS90CR483VJDX/NOPB require external termination resistors?

Yes, DS90CR483VJDX/NOPB requires a 100 Ω differential termination resistor placed as close as possible to the receiver inputs (e.g., DS90CR484). This resistor completes the LVDS current loop, controls reflections, and ensures proper signal integrity - especially critical for cable runs exceeding 1 meter.

How is deskew enabled and calibrated for DS90CR483VJDX/NOPB?

Deskew is enabled only when BAL = HIGH (activating DC balance mode). Calibration requires pulling DS_OPT LOW for ≥4 clock cycles while the receiver (DS90CR484) has DESKEW = HIGH. During calibration, DS90CR483VJDX/NOPB transmits a known pattern; the receiver then adjusts sampling strobes independently per channel over ±1 TBIT range.

Can DS90CR483VJDX/NOPB interface directly with 5 V logic devices?

Yes, DS90CR483VJDX/NOPB features 5 V-tolerant TxIN, BAL, PD, DS_OPT, and PRE pins - allowing direct connection to 5 V microcontrollers, FPGAs, or CPLDs without level shifters. However, the VCC supply must remain at +3.3 V; I/O voltage tolerance does not extend to power rail operation.

What is the role of the PRE pin on DS90CR483VJDX/NOPB?

The PRE pin on DS90CR483VJDX/NOPB sets pre-emphasis strength via an applied DC voltage (0.75 V to VCC). A higher voltage increases dynamic output current during LVDS transitions, countering cable attenuation. For example, 1.5 V enables 50% pre-emphasis suitable for 5 m cables at 112 MHz, per TI Application Note SNLA157.