Texas Instruments DS90CR215MTD

Overview

DS90CR215MTD from Texas Instruments is a 21-bit LVDS transmitter IC that converts parallel CMOS/TTL data into three differential LVDS data streams plus one LVDS clock stream, operating at up to 66 MHz with 1.386 Gbps total throughput and 290 mV differential output swing. It implements rising-edge data strobe timing, supports +3.3 V single-supply operation, and targets high-speed serial link applications in industrial displays and imaging systems.

For engineers reviewing the DS90CR215MTD datasheet, DS90CR215MTD pinout, DS90CR215MTD application, or DS90CR215MTD equivalent, this page delivers verified technical context, exact pin functions, real-world timing margins, cable skew tolerance, and validated alternative options for Channel Link 3.3 V system upgrades.

Technical Context

The DS90CR215MTD integrates a PLL-based clock multiplier and serializer that maps 21 parallel TTL inputs across three 7-bit LVDS data lanes plus one dedicated LVDS clock lane, with all outputs synchronized to the rising edge of TxCLK IN. Its phase-locked transmit clock ensures deterministic bit alignment and enables precise receiver sampling windows.

It operates strictly on a +3.3 V supply (3.0–3.6 V), requires no external PLL components, and provides power-down mode (<0.5 mW) via active-low PWR DWN. The device complies fully with TIA/EIA-644 LVDS standard, features 290 mV typical differential output voltage, and maintains +1.2 V common-mode level with ±1.0 V tolerance for ground shift immunity.

Key Specifications

Pinout & Package

DS90CR215MTD uses a 48-lead TSSOP package (package code DGG0048A), with dedicated power domains for TTL logic (VCC/GND), LVDS drivers (LVDS VCC/LVDS GND), and PLL circuitry (PLL VCC/PLL GND) to minimize noise coupling.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DS90CR215MTDX/NOPB, DS90CR215MTD offers identical performance in tube packaging for evaluation and small-batch use; compared with DS90CR285MTD, it provides optimal cost and layout efficiency for 21-bit applications without over-provisioning lane count.

Availability

DS90CR215MTD is available at Aetrix Electronics and suitable for industrial display interfaces, medical imaging sensor links, automotive digital clusters, and machine vision camera modules requiring stable component supply and long-term lifecycle support.

Supply support for DS90CR215MTD 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 DS90CR215MTD belongs to TI's Channel Link family-designed specifically for high-bandwidth, low-EMI serialization of parallel video and sensor data in space- and noise-constrained industrial and medical systems.

FAQ

What is the maximum supported clock frequency for DS90CR215MTD?

The DS90CR215MTD supports a maximum transmit clock frequency of 66 MHz, delivering 1.386 Gbps aggregate data throughput. At this rate, each LVDS data lane carries 462 Mbps, and the receiver achieves 400 ps skew margin-verified across −40°C to +85°C and full voltage range (3.0–3.6 V). Operation beyond 66 MHz is not characterized or guaranteed.

Does DS90CR215MTD require external termination resistors?

Yes-DS90CR215MTD itself does not integrate termination; a 100 Ω surface-mount resistor must be placed across each LVDS receiver input pair (TxOUT+/− and TxCLK OUT+/− at the far-end receiver). This matches the typical 100 Ω differential impedance of Twin-Coax or twisted-pair cables and ensures signal integrity, reflection suppression, and compliance with TIA/EIA-644.

Can DS90CR215MTD interface directly with 5 V logic systems?

No-DS90CR215MTD accepts only 3.3 V CMOS/TTL input levels (VIH = 2.0 V min, VIL = 0.8 V max) and is not 5 V tolerant. Direct connection to 5 V logic will exceed absolute maximum ratings and risk permanent damage. Level translation (e.g., TXB0108 or discrete resistor dividers) is required for interoperability with legacy 5 V systems.

How does the power-down mode affect DS90CR215MTD outputs?

When PWR DWN is asserted low, DS90CR215MTD places all LVDS outputs (TxOUT± and TxCLK OUT±) into high-impedance TRI-STATE, reducing total supply current to <55 μA. Outputs remain inactive until PWR DWN returns high and VCC stabilizes above 3 V-after which the PLL locks within 10 ms before resuming valid data transmission.

What is the recommended decoupling strategy for DS90CR215MTD?

TI specifies three parallel ceramic capacitors per power domain: 0.1 μF, 0.01 μF, and 0.001 μF, placed as close as possible to each VCC pin pair. Priority order is PLL VCC > LVDS VCC > logic VCC. Each capacitor must have its own low-inductance via to the ground plane; wide power traces and minimized loop area are mandatory to suppress switching noise affecting PLL jitter and LVDS common-mode stability.