Texas Instruments SN65LVDS95DGGR

Overview

SN65LVDS95DGGR from Texas Instruments is a 21-channel LVDS serializer transmitter with 3.3-V single-supply operation, 7× clock multiplication PLL, and integrated LVDS drivers delivering 1.428 Gbps throughput. It converts 21-bit LVTTL parallel data plus clock into four LVDS differential pairs (Y0P/Y0M, Y1P/Y1M, Y2P/Y2M, CLKOUTP/CLKOUTM) for point-to-point high-speed interconnect in backplane and embedded subsystems.

For engineers reviewing the SN65LVDS95DGGR datasheet, SN65LVDS95DGGR pinout, SN65LVDS95DGGR application, or SN65LVDS95DGGR equivalent, key selection criteria include its 21-bit parallel-to-4-pair LVDS serialization, 20–68 MHz PLL input range, 5-V-tolerant inputs, industrial temperature rating (–40°C to 85°C), and TSSOP-48 package compatibility with high-density PCB layouts.

Technical Context

The SN65LVDS95DGGR implements three independent 7-bit parallel-load shift registers synchronized to CLKIN's rising edge, with a fully integrated 7× PLL synthesizing the serial bit clock. Its output stage comprises four matched LVDS drivers meeting ANSI EIA/TIA-644 standards, each delivering 247–454 mV differential output voltage into 100 Ω loads.

Internal logic includes active-low SHTDN control enabling sub-1 mW shutdown power, bus pins rated for 6-kV HBM ESD, and no external components required for PLL lock. The device operates with 3.0–3.6 V supply, consumes 85–110 mA typical quiescent current at 1.428 Gbps, and maintains <0.2 ns output skew across all serialized bit positions.

Key Specifications

Pinout & Package

TSSOP-48 package (DGG), 12.6 mm × 6.2 mm × 1.2 mm max height, 0.5 mm pitch, RoHS-compliant NiPdAu lead finish, MSL Level-2-260°C-1 year.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN65LVDS93DGGR and DS90CR215MTD, the SN65LVDS95DGGR provides unique 21-bit serialization with 5-V-tolerant inputs and superior ESD protection-critical for mixed-voltage systems and rugged industrial deployments where input robustness and channel count cannot be compromised.

Availability

SN65LVDS95DGGR is available at Aetrix Electronics and suitable for industrial backplane extension, medical imaging subsystem interconnect, telecom line card design, and automotive infotainment gateway modules requiring stable component supply across multi-year production cycles.

Supply support for SN65LVDS95DGGR 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 ICs and industrial-grade reliability.

The SN65LVDS95DGGR belongs to TI's LVDS SerDes family, engineered specifically for high-integrity, low-EMI point-to-point data transport in space-constrained industrial and communications equipment where parallel bus limitations necessitate efficient serialization.

FAQ

What is the maximum input clock frequency supported by the SN65LVDS95DGGR?

The SN65LVDS95DGGR supports an input clock (CLKIN) frequency range of 20 MHz to 68 MHz, with the internal 7× PLL generating a serial bit clock up to 476 MHz. At 68 MHz CLKIN, the device achieves its rated 1.428 Gbps throughput. Operation outside this range may result in failed PLL lock or invalid serialization timing.

Does the SN65LVDS95DGGR require external passive components for PLL operation?

No, the SN65LVDS95DGGR requires no external components for PLL operation. Its fully integrated 7× clock synthesizer locks to CLKIN within milliseconds and maintains stable phase alignment without crystals, capacitors, or resistors-reducing BOM count and layout complexity versus discrete PLL solutions.

How does the SHTDN pin function on the SN65LVDS95DGGR?

The SHTDN pin on the SN65LVDS95DGGR is an active-low shutdown control. When pulled low, it clears all internal shift registers to logic low and disables all LVDS output drivers, reducing total supply current to under 280 µA. Release to high re-enables normal operation with ~1 ms enable time before valid serial output.

Can the SN65LVDS95DGGR interface directly with 5-V TTL logic without level shifters?

Yes, the SN65LVDS95DGGR features 5-V-tolerant parallel data inputs (D0–D20) and CLKIN, allowing direct connection to legacy 5-V TTL or CMOS logic. Input thresholds are specified at 1.4 V, and absolute maximum input voltage is 5.5 V-enabling seamless integration into mixed-voltage systems without external translation circuitry.

What is the recommended termination for SN65LVDS95DGGR LVDS outputs?

The SN65LVDS95DGGR LVDS outputs (Y0P/Y0M, Y1P/Y1M, Y2P/Y2M, CLKOUTP/CLKOUTM) require 100 Ω differential termination at the receiver end. TI specifies optimal performance with 90–132 Ω load impedance; standard 100 Ω resistors placed across each pair at the far-end receiver ensure proper signal integrity and minimize reflections.