Texas Instruments SN65LVDS93AZQLR

Overview

SN65LVDS93AZQLR from Texas Instruments is a FlatLink™ LVDS serializer transmitter for LCD display interfaces, supporting 28-bit parallel TTL input (D0–D27) and generating four 7-bit LVDS data streams plus one LVDS clock output (CLKOUTP/M). It operates from a single 3.3-V supply with 1.8-V to 3.3-V tolerant inputs, delivers up to 135 MHz pixel clock frequency, and consumes 170 mW typical at 75 MHz - enabling high-resolution display links in space-constrained industrial panels.

For engineers reviewing the SN65LVDS93AZQLR datasheet, SN65LVDS93AZQLR pinout, SN65LVDS93AZQLR application, or SN65LVDS93AZQLR equivalent, key selection criteria include its 56-ball BGA MICROSTAR Junior (ZQL) package, selectable rising/falling-edge clock triggering via CLKSEL, spread-spectrum clocking support, and compatibility with OMAP2x/3x and DaVinci™ processors in embedded display systems.

Technical Context

The SN65LVDS93AZQLR integrates four 7-bit parallel-load serial-out shift registers, a 7× PLL-based clock synthesizer, and five LVDS drivers - converting 28-bit single-ended LVTTL data into four serialized LVDS data channels (Y0–Y3) and one phase-locked LVDS clock (CLKOUT). Its architecture enables synchronous transmission over balanced-pair conductors to compatible receivers like the SN65LVDS94.

It supports 10–135 MHz input pixel clock frequencies, delivers differential output voltage magnitude |VOD| of 250–450 mV into 100 Ω, maintains steady-state common-mode output voltage VOC(SS) between 1.125 V and 1.375 V, and features integrated 100 kΩ (IOVCC = 3.3 V) or 200 kΩ (IOVCC = 1.8 V) input pulldown resistors on all data and control pins - simplifying interface design with graphics processors.

Key Specifications

Pinout & Package

SN65LVDS93AZQLR uses the 56-ball BGA MICROSTAR Junior (ZQL) package, measuring 7.0 mm × 4.5 mm with 0.5-mm ball pitch. The package supports fine-pitch PCB routing for high-density display interface designs and includes dedicated analog (LVDSVCC, PLLVCC), digital (VCC), and I/O reference (IOVCC) supplies, plus 28 data inputs, 5 LVDS outputs (Y0P/M through Y3P/M and CLKOUTP/M), and functional control pins (CLKIN, CLKSEL, SHTDN).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN65LVDS93ADGG and SN75LVDS83B, SN65LVDS93AZQLR provides the smallest footprint (7.0 × 4.5 mm), full 28-bit RGB+sync support with configurable clock edge, and direct compatibility with OMAP/DaVinci processors - making it optimal for production-grade, space- and performance-constrained display modules.

Availability

SN65LVDS93AZQLR is available at Aetrix Electronics and suitable for industrial LCD panels, UMPC/netbook displays, and digital picture frames requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for SN65LVDS93AZQLR 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 SN65LVDS93AZQLR belongs to TI's FlatLink™ LVDS SerDes product line, designed specifically for low-EMI, high-bandwidth video transport between graphics processors and LCD display panels in industrial, portable, and automotive applications.

FAQ

What is the primary function of the SN65LVDS93AZQLR in a display system?

The SN65LVDS93AZQLR functions as an LVDS serializer that converts 28-bit parallel TTL data (RGB + sync + reserved bits) and a pixel clock into four serialized LVDS data streams and one LVDS clock output. It enables high-speed, low-noise video transmission from a graphics processor to an LCD panel - and the SN65LVDS93AZQLR is optimized for resolutions from HVGA up to HD with minimal EMI impact.

Does the SN65LVDS93AZQLR require external components for basic operation?

No, the SN65LVDS93AZQLR requires no external components for core functionality. Its integrated 7× PLL, input pulldown resistors (100 kΩ at 3.3 V IOVCC), and LVDS drivers eliminate the need for external clocks, level shifters, or bias networks. Only decoupling capacitors per power domain (VCC, IOVCC, LVDSVCC, PLLVCC) and proper ground plane implementation are required - and the SN65LVDS93AZQLR datasheet confirms this self-contained operation.

How does the CLKSEL pin affect timing behavior in the SN65LVDS93AZQLR?

The CLKSEL pin selects whether the SN65LVDS93AZQLR samples input data (D0–D27) on the rising edge (CLKSEL = high) or falling edge (CLKSEL = low) of CLKIN. This allows precise alignment with GPU output timing without external delay elements - and the SN65LVDS93AZQLR's setup/hold times (2 ns setup, 0.8 ns hold) are specified relative to the selected edge, ensuring reliable capture across process/voltage/temperature corners.

Can the SN65LVDS93AZQLR support 18-bit RGB displays, and how is that configured?

Yes, the SN65LVDS93AZQLR supports 18-bit RGB displays. Unused inputs (D5, D10, D11, D16, D17, D23, D27) must be tied to GND per TI's recommendation, and Y3 differential output may be left open. Bit mapping follows Table 2 in the SN65LVDS93AZQLR datasheet - preserving correct red/green/blue ordering while disabling reserved and higher-order bits - ensuring accurate color reproduction without software modification.

What thermal considerations apply to the SN65LVDS93AZQLR in its ZQL package?

The SN65LVDS93AZQLR in the 56-ball ZQL BGA has a junction-to-ambient thermal resistance (RθJA) of 67.1°C/W. To maintain safe operation at 135 MHz (102.2 mA total supply current), a multilayer PCB with a solid ground plane beneath the device and thermal vias under the exposed pad (if present) is recommended - and TI specifies that all ground balls (A1, B1, C3, etc.) must connect directly to this plane, as confirmed in the SN65LVDS93AZQLR mechanical documentation.