Texas Instruments SN65LVDS315RGET

Overview

SN65LVDS315RGET from Texas Instruments is a camera serializer IC that converts 8-bit parallel RGB interface data into MIPI CSI-1–compliant SubLVDS serial output, supporting pixel clock frequencies from 3.5 MHz to 27 MHz, operating across –40°C to 85°C, and featuring three power modes (active/standby/shutdown) for mobile camera modules interfacing with OMAP processors.

For engineers reviewing the SN65LVDS315RGET datasheet, SN65LVDS315RGET pinout, SN65LVDS315RGET application, or SN65LVDS315RGET equivalent, this page delivers verified electrical characteristics, SubLVDS timing behavior, MIPI CSI-1 mode compatibility, FSEL-configurable clock range, and bus-hold–enabled CMOS inputs for robust camera-to-host connectivity in space-constrained designs.

Technical Context

The SN65LVDS315RGET implements a dedicated 8× subLVDS serializer with integrated PLL, converting parallel D[7:0], VS, and HS signals sampled on the falling edge of DCLK into two differential SubLVDS streams: DOUT± (data) and CLK± (8× pixel clock). Its functional block includes line-count logic (MODE-controlled), glitch-suppressed TXEN, and FSEL-selectable frequency bands (3.5–13 MHz or 7–27 MHz).

It supports MIPI CSI-1 Mode 0 compliance via SubLVDS signaling with 100–250 mV differential output swing, 0.8–1.0 V common-mode voltage, and <730 ps rise/fall times. Input voltage tolerance spans 1.65–3.6 V for D[7:0]/HS/VS/DCLK (VDDIO-referenced), while core supplies require precise 1.8 V for VDDD and VDDA.

Key Specifications

Pinout & Package

SN65LVDS315RGET is housed in a 24-pin VQFN package (4.00 mm × 4.00 mm, 0.5-mm pitch) with exposed thermal pad. Pin functions are validated per TI SLLS881G Rev G datasheet.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN65LVDS315RGET, SN65LVDS314RGET offers reduced functionality but smaller footprint, while DS90UR905QSQ provides extended reach and higher resolution at the cost of MIPI CSI-1 incompatibility and higher system complexity.

Availability

SN65LVDS315RGET is available at Aetrix Electronics and suitable for mobile phone camera modules, OMAP-based vision systems, VGA streaming subsystems, and low-power surveillance sensors requiring stable component supply throughout product lifecycles.

Supply support for SN65LVDS315RGET 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 experience in high-speed interface and imaging solutions.

The SN65LVDS315RGET belongs to TI's camera interface IC portfolio, designed specifically to simplify integration of parallel-output image sensors into MIPI CSI-1–enabled processors for mobile, industrial, and consumer vision applications.

FAQ

What is the primary function of the SN65LVDS315RGET in a camera interface design?

The SN65LVDS315RGET serves as a dedicated 8-bit parallel-to-MIPI CSI-1 SubLVDS serializer. It accepts D[7:0], VS, HS, and DCLK from an image sensor and outputs compliant serial data (DOUT±) and clock (CLK±) signals. Its role is to replace complex FPGA-based bridging, enabling direct connection to OMAP and other MIPI CSI-1 receivers - a core function confirmed in TI's SLLS881G datasheet section 1 and 3.

Does the SN65LVDS315RGET support both MIPI CSI-1 and SMIA CCP protocols?

Yes, the SN65LVDS315RGET explicitly supports both MIPI CSI-1 and SMIA CCP standards, as stated in the "Features" section of the official datasheet (SLLS881G, page 1). It generates standard synchronization codes - SOF, EOF, SOL, and EOL - based on VS and HS timing, ensuring interoperability with host processors compliant with either specification.

How does the FSEL pin affect the operational range of the SN65LVDS315RGET?

The FSEL pin selects between two DCLK input frequency ranges: FSEL = 0 enables 3.5–13 MHz operation; FSEL = 1 enables 7–27 MHz. This hardware-selectable range allows one SN65LVDS315RGET design to accommodate multiple sensor types - e.g., QVGA sensors at lower clocks and SVGA/UXGA sensors at higher clocks - without firmware changes or layout modifications.

What is the purpose of the MODE pin on the SN65LVDS315RGET?

The MODE pin enables internal line counting logic to generate accurate EOF signals when VS and HS do not reset within the same DCLK cycle - a known timing challenge with certain image sensors. When MODE = 1, the SN65LVDS315RGET tracks horizontal sync transitions to infer frame boundaries, preventing frame sync loss. TI recommends MODE = high unless sensor timing guarantees alignment.

Can the SN65LVDS315RGET operate with mixed-voltage interfaces?

Yes. The SN65LVDS315RGET supports mixed-voltage operation: VDDIO (1.65–3.6 V) powers D[7:0], VS, HS, and DCLK inputs, allowing direct connection to 1.8 V or 3.3 V sensors; meanwhile, VDDD and VDDA require strict 1.8 V supplies for digital core and PLL/SubLVDS I/O. This separation is documented in Section 6.3 (Recommended Operating Conditions) of the datasheet.