Texas Instruments DS99R103TVS/NOPB

Overview

DS99R103TVS/NOPB from Texas Instruments is a 24-bit LVDS serializer that converts parallel LVCMOS data (3–40 MHz clock) into a DC-balanced serial stream with embedded clock, supporting up to 960 Mbps throughput over shielded twisted-pair cable. It features user-selectable clock edge sampling (rising/falling), internal DC balancing for AC-coupled interfaces, and programmable output voltage (±400 mV or ±750 mV) for varying cable lengths.

For engineers reviewing the DS99R103TVS/NOPB datasheet, DS99R103TVS/NOPB pinout, DS99R103TVS/NOPB application, or DS99R103TVS/NOPB equivalent, this device serves as the transmitter half of a matched chipset (with DS99R104) for high-integrity, low-EMI video/data bridging in space-constrained industrial displays, automotive infotainment links, and FPGA-to-FPGA interconnects where skew elimination and live-pluggability are critical.

Technical Context

The DS99R103TVS/NOPB implements a PLL-based clock embedding architecture with on-chip DC-balancing encoding (RDL-coded), enabling robust transmission without external line coding. Its CDR-free transmit side synchronizes directly to TCLK, while pre-emphasis (via PRE pin) and VODSEL-controlled differential output amplitude allow optimization for lossy 1–10 m STP channels.

It supports progressive turn-on (PTO) LVCMOS outputs to minimize SSO noise, includes individual power-down controls (TPWDNB, DEN), and integrates 100 Ω input termination only on the companion DS99R104 - not on DS99R103TVS/NOPB itself. All LVCMOS inputs have internal pulldowns, and PLLs include on-chip filtering for jitter resilience.

Key Specifications

Pinout & Package

DS99R103TVS/NOPB is housed in a 48-pin WQFN package (package code NJU0048D), with exposed thermal pad, 0.5 mm pitch, and 7.0 mm × 7.0 mm body size. Pin functions are validated per TI SNLS241D Rev D datasheet.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DS99R103TVSX/NOPB, DS99R103TVS/NOPB offers identical performance but in tray packaging for prototyping and low-volume builds; compared with SN65LVDS31DR, DS99R103TVS/NOPB delivers 6× wider bus, embedded clock recovery readiness, and true random-data locking - essential for video and imaging systems.

Availability

DS99R103TVS/NOPB is available at Aetrix Electronics and suitable for automotive display links, industrial camera interfaces, FPGA-to-FPGA bridging, and medical imaging backplanes requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for DS99R103TVS/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 automotive and industrial qualification expertise.

The DS99R103TVS/NOPB belongs to TI's high-speed serializer/deserializer (SerDes) product line, designed specifically for noise-immune, skew-free parallel bus extension in bandwidth-constrained, EMI-sensitive environments like automotive displays and machine vision systems.

FAQ

What is the primary function of DS99R103TVS/NOPB in a system?

The DS99R103TVS/NOPB is a 24-bit LVDS serializer that converts parallel LVCMOS data into a single DC-balanced serial stream with embedded clock. It serves as the transmitter in a chipset with DS99R104, enabling high-fidelity, low-skew data transport over shielded twisted-pair cable - critical for automotive displays, industrial cameras, and FPGA interconnects where DS99R103TVS/NOPB replaces wide parallel buses.

Does DS99R103TVS/NOPB require an external reference clock at the receiver?

No. DS99R103TVS/NOPB embeds the clock into the serial stream, so the companion DS99R104 deserializer recovers it internally via CDR - no external reference clock is needed. DS99R103TVS/NOPB itself only requires the local TCLK input; its design eliminates clock distribution complexity and skew, making DS99R103TVS/NOPB ideal for systems where timing alignment is challenging.

How does DS99R103TVS/NOPB handle DC balance for AC-coupled interfaces?

DS99R103TVS/NOPB uses internal RDL (Random Data Lock) encoding to ensure DC balance on the serial output, allowing reliable AC coupling without external line coding. This means DS99R103TVS/NOPB supports capacitor-coupled connections to DS99R104 over long cables while preventing baseline wander - a key requirement for stable operation in DS99R103TVS/NOPB-based video and imaging links.

Can DS99R103TVS/NOPB operate with different LVDS output amplitudes?

Yes. DS99R103TVS/NOPB supports two selectable LVDS output differential voltages: ±400 mV (VODSEL = L) for standard PCB traces and ±750 mV (VODSEL = H) for longer shielded twisted-pair runs. This dual-level capability is configured via a single LVCMOS pin, letting DS99R103TVS/NOPB adapt to channel loss without redesign - a feature confirmed in TI's SNLS241D datasheet for DS99R103TVS/NOPB.

What power-down modes does DS99R103TVS/NOPB support?

DS99R103TVS/NOPB provides two independent power-down controls: TPWDNB (global shutdown, cuts PLL and outputs) and DEN (data gate, holds DOUT± in TRI-STATE while maintaining PLL lock). In TPWDNB mode, DS99R103TVS/NOPB draws just 14–250 µA; in DEN mode, it remains ready for instant data resumption - enabling flexible power management in battery-sensitive or thermally constrained DS99R103TVS/NOPB deployments.