Texas Instruments DS92LV3222TVS/NOPB

Overview

DS92LV3222TVS/NOPB from Texas Instruments is a Channel Link II deserializer IC that converts two embedded-clock LVDS serial streams into a 32-bit LVCMOS parallel data bus with recovered clock. It operates at 20–50 MHz parallel clock rates, supports up to 1.6 Gbps payload, embeds CDR/PLL for reference-free lock, and performs automatic cable deskew and channel alignment. Used in high-reliability industrial imaging links over CAT-5 cables.

For engineers reviewing the DS92LV3222TVS/NOPB datasheet, DS92LV3222TVS/NOPB pinout, DS92LV3222TVS/NOPB application, or DS92LV3222TVS/NOPB equivalent, key selection criteria include LVDS input skew tolerance (≤0.4×tCIP), built-in AT-speed BIST, LOCK status signaling, REN-controlled TRI-STATE outputs, and support for 1.8V/3.3V IOVDD interface voltage.

Technical Context

The DS92LV3222TVS/NOPB implements a CDR-based PLL architecture that recovers clock and data from dual LVDS inputs without external reference, enabling plug-and-lock operation across arbitrary data patterns. Its internal deskew logic dynamically compensates for inter-channel phase mismatch up to 0.4× parallel clock period - critical for long CAT-5 or FR-4 interconnects.

It features configurable output clock edge polarity via R_FB, active-high REN for parallel output enable/disable, and PDB for full power-down (µA quiescent current). All LVDS inputs include 100 Ω internal termination, and outputs drive ≤8 pF loads with guaranteed timing margins for 50 MHz operation.

Key Specifications

Pinout & Package

DS92LV3222TVS/NOPB uses a 64-pin TQFP (PAG) package with 10 mm × 10 mm body, 0.5 mm pitch, and exposed thermal pad. Pin functions are validated per TI SNLS319C Rev. April 2013.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DS92LV3222TVS/NOPB, DS92LV3221TVS/NOPB serves the complementary serializer role in the same chipset, while MAX9248GTJ+T offers automotive-grade FPD-Link III compatibility but sacrifices 32-bit width, BIST, and 1.6 Gbps throughput - making DS92LV3222TVS/NOPB irreplaceable for industrial high-resolution imaging links.

Availability

DS92LV3222TVS/NOPB is available at Aetrix Electronics and suitable for industrial machine vision, medical endoscopy, security surveillance, and automated optical inspection systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for DS92LV3222TVS/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.

DS92LV3222TVS/NOPB belongs to TI's Channel Link II SerDes product line, designed specifically for noise-immune, long-reach parallel-to-serial conversion in industrial imaging, medical, and surveillance systems.

FAQ

What is the primary function of DS92LV3222TVS/NOPB in a Channel Link II system?

The DS92LV3222TVS/NOPB is a deserializer IC that receives two embedded-clock LVDS serial streams and reconstructs them into a 32-bit LVCMOS parallel data bus with a recovered clock. It performs CDR-based clock recovery, automatic channel deskew, and provides LOCK status signaling - enabling robust, reference-free data transport over lossy media like CAT-5 cables. DS92LV3222TVS/NOPB is essential for the receiver side of any Channel Link II link.

Does DS92LV3222TVS/NOPB require an external reference clock to operate?

No, DS92LV3222TVS/NOPB does not require an external reference clock. Its integrated CDR/PLL recovers both clock and data directly from the incoming LVDS serial streams - supporting true "plug-and-lock" operation without training patterns or sync characters. This eliminates clock distribution complexity and skew issues in multi-board systems. DS92LV3222TVS/NOPB achieves lock autonomously upon valid data reception.

How does DS92LV3222TVS/NOPB handle inter-channel skew between its two LVDS inputs?

DS92LV3222TVS/NOPB automatically deskews RxIN0 and RxIN1 channels during lock acquisition, compensating for up to 0.4× the parallel clock period (e.g., ≤8 ns at 50 MHz). This dynamic alignment corrects for PCB trace length mismatches, cable pair imbalances, and connector delays - eliminating manual delay tuning. The deskew is transparent and occurs without user intervention or special initialization sequences. DS92LV3222TVS/NOPB maintains alignment continuously during operation.

What is the purpose of the LOCK pin on DS92LV3222TVS/NOPB?

The LOCK pin on DS92LV3222TVS/NOPB is an active-high, open-drain output indicating CDR/PLL lock status. It asserts HIGH only when the deserializer has successfully recovered clock and data, and RxOUT[31:0] outputs are valid and synchronized to RxCLKOUT. When LOCK is LOW, RxOUT data is invalid and RxCLKOUT is not stable. System firmware can monitor LOCK to validate link integrity or trigger reinitialization. DS92LV3222TVS/NOPB relies on this pin for deterministic data readiness signaling.

Can DS92LV3222TVS/NOPB interface with both 1.8 V and 3.3 V LVCMOS logic?

Yes, DS92LV3222TVS/NOPB supports dual-voltage LVCMOS I/O via the dedicated IOVDD pin: connect IOVDD to 1.8 V for 1.8 V-compatible RxOUT outputs, or to 3.3 V for 3.3 V-compatible operation. The device automatically adapts output drive strength and threshold levels accordingly. Input thresholds scale with IOVDD, ensuring reliable interfacing with mixed-voltage FPGAs or processors. DS92LV3222TVS/NOPB must have IOVDD powered before or simultaneously with VDD during power-up.