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Texas Instruments DS90CR481VJD/NOPB
- Part No.:
- DS90CR481VJD/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Serializers, Deserializers
- Package:
- 100-TQFP
- Datasheet:
-
DS90CR481VJD/NOPB.pdf
- Description:
- IC SERIALIZER 48BIT 100-TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:107
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Product details
Overview
DS90CR481VJD/NOPB from Texas Instruments is a 48-bit LVDS serializer IC that converts parallel CMOS/TTL data into eight serialized LVDS data streams plus one LVDS clock channel. It supports input clock frequencies from 65 MHz to 112 MHz, delivers up to 5.376 Gbits/sec bandwidth, and features pre-emphasis, DC balance encoding, and flow-through pinout. It is used in high-speed video and imaging interfaces requiring long-cable transmission with reduced EMI and connector count.
For engineers reviewing the DS90CR481VJD/NOPB datasheet, DS90CR481VJD/NOPB pinout, DS90CR481VJD/NOPB application, or DS90CR481VJD/NOPB equivalent, key selection criteria include LVDS channel count (8 data + 1 clock), 100-pin TQFP package, 3.3 V supply, 5 V-tolerant control inputs, and cable deskew compatibility with DS90CR482 receiver.
Technical Context
The DS90CR481VJD/NOPB implements a PLL-based serialization architecture with cycle-to-cycle jitter rejection at the TxCLK input and programmable pre-emphasis via the PRE pin (0.75 V to VCC). Its internal DC balancing logic operates on a per-word basis to minimize long-term DC bias across all eight LVDS channels.
It supports two operational modes: DC-balanced mode (BAL = HIGH) enabling cable deskew up to ±1 LVDS bit time at ≤80 MHz, and non-DC-balanced mode (BAL = LOW) for backward compatibility with 21-/28-bit Channel Link receivers. The DESKEW function requires coordinated DS_OPT pin assertion on the transmitter and DESKEW pin assertion on the DS90CR482 receiver.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Clock Range | 65–112 MHz: defines maximum parallel data throughput (672 Mbps per LVDS lane at 112 MHz) |
| Data Width | 48-bit parallel CMOS/TTL input: supports configurations like six 8-bit words or five 9-bit words + control signals |
| LVDS Outputs | 8 data pairs + 1 clock pair: reduces 48-bit parallel bus + clock from up to 98 conductors to as few as 19 |
| Supply Voltage | +3.3 V (3.0–3.6 V): compatible with standard low-voltage digital systems; 5 V tolerant on TxIN/control pins |
| Pre-emphasis Control | Voltage-controlled via PRE pin (0.75 V–VCC): adjusts dynamic output current to counteract cable attenuation up to 5+ meters |
| DC Balance Mode | Enabled by BAL = HIGH: adds per-word inversion logic to reduce ISI and enable cable deskew functionality |
| Power Dissipation | 2.3 W max at 25°C (100L TQFP): derates 18.1 mW/°C above ambient; enables thermal design for dense PCB layouts |
Pinout & Package
DS90CR481VJD/NOPB is housed in a 100-pin Low-Profile Quad Flat Package (LQFP), 14 mm × 14 mm, 0.5 mm pitch, RoHS-compliant and lead-free (NOPB suffix). Thermal pad on underside improves heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| TxIN[0:47] | Parallel data input | 48-bit CMOS/TTL data bus; 5 V tolerant; sampled on rising edge of TxCLK |
| TxCLK | Input clock | 65–112 MHz single-ended CMOS/TTL clock; falling edge triggers PLL sampling |
| BAL | DC balance enable | HIGH enables per-word inversion logic; required for deskew mode and long-cable ISI reduction |
| PRE | Pre-emphasis control | Analog voltage input (0.75 V–VCC) setting dynamic current boost during LVDS transitions |
| DS_OPT | Deskew calibration trigger | LOW for ≥4 clock cycles initiates deskew training sequence with DS90CR482 receiver |
| PD | Power-down control | HIGH enables normal operation; LOW places outputs in TRI-STATE and shuts down PLL |
| VCC, GND | Power supply | Single +3.3 V supply; decoupling required per datasheet layout guidelines |
| TxOUT[0:7], TxCLK_OUT | LVDS differential outputs | Eight 100 Ω-terminated LVDS data pairs and one LVDS clock pair; require external 100 Ω termination at receiver |
Key Features
| Feature | Design Value |
|---|---|
| Flow-through pinout | Minimizes PCB trace length and layer transitions between parallel inputs and LVDS outputs, reducing skew and signal integrity risk |
| Cable deskew support | Enables ±1 LVDS bit-time deskew at receiver (DS90CR482) when BAL = HIGH and DS_OPT asserted - critical for >5 m cable runs |
| 5 V-tolerant control inputs | Allows direct interface with legacy 5 V logic without level shifters on BAL, PRE, PD, and DS_OPT pins |
| Transmitter jitter rejection | Rejects cycle-to-cycle jitter at TxCLK input (<100 ps passed through), improving timing margin at receiver sampling point |
| Optional DC balance encoding | Reduces low-frequency content and inter-symbol interference on long cables, enabling stable eye opening at 112 MHz over 5+ meters |
Applications
| Industrial Camera Interface | Medical Imaging Backplane |
|---|---|
Use Scenario: High-resolution monochrome camera sensor (e.g., 4K line-scan) transmits raw pixel data over 3-meter shielded twisted-pair cable to FPGA-based frame grabber. IC Role / Device Role / Timing Role: DS90CR481VJD/NOPB serializes 48-bit pixel bus and embeds clock; DS90CR482 deserializes at far end with deskew enabled. Use Value: Replaces 98-conductor ribbon cable with 19-wire harness, cuts EMI emissions by >20 dB, and maintains <1 UI jitter at 112 MHz. | Use Scenario: CT scanner detector module streams synchronized analog-to-digital samples across backplane to central processing unit using differential routing. IC Role / Device Role / Timing Role: DS90CR481VJD/NOPB drives eight LVDS lanes from ASIC ADC output; operates in non-DC-balance mode for deterministic latency. Use Value: Eliminates ground bounce and crosstalk in 12-layer backplane; achieves <40 ps channel-to-channel skew across 15 cm trace length. |
| Automotive ADAS Display Link | Aerospace Avionics Video Distribution |
Use Scenario: In-vehicle infotainment system routes 1080p video from SoC to LCD display panel mounted behind dashboard using flexible flat cable. IC Role / Device Role / Timing Role: DS90CR481VJD/NOPB acts as serializer at source; pre-emphasis set to 1.5 V for 2.5 m FFC run; BAL = LOW for minimal latency. Use Value: Meets CISPR 25 Class 5 radiated emissions limits; sustains 672 Mbps/lane with <0.3 UI eye closure after cable loss. | Use Scenario: Ruggedized flight display unit receives real-time synthetic vision data from mission computer over 4-meter MIL-DTL-83527 cable. IC Role / Device Role / Timing Role: DS90CR481VJD/NOPB transmits with DC balance enabled and deskew training performed at power-up; operates at 80 MHz for robustness. Use Value: Supports cable pair-to-pair skew up to ±800 ps; maintains BER <1e−12 over full temperature range (−40°C to +85°C). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LVDS serializer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS90UB925QSQ/NOPB | Integrated FPD-Link III serializer with embedded clock, 1.5 Gbps per lane, I²C control, and built-in diagnostics | Designed for automotive display links with ASIL-B support; lacks standalone deskew or pre-emphasis configuration | Select when system requires bidirectional control channel, functional safety compliance, and lower pin count - not for legacy TTL parallel interfaces |
| SN65LVDS31DR | Quad LVDS line driver (4 channels only); no serialization logic, no PLL, no DC balance, fixed 3.3 V operation | Suitable only for short-reach point-to-point LVDS signaling; cannot replace 48-bit parallel-to-serial conversion | Select only for simple LVDS level-shifting of existing differential buses - not as a serializer replacement |
Compared with DS90CR481VJD/NOPB, DS90UB925QSQ/NOPB offers higher integration and safety features but requires redesign of host interface and clocking; SN65LVDS31DR provides basic LVDS drive capability only and cannot perform parallel-to-serial conversion or support cable deskew.
Availability
DS90CR481VJD/NOPB is available at Aetrix Electronics and suitable for industrial imaging, medical backplanes, automotive ADAS displays, and aerospace video distribution requiring stable component supply and long-cable reliability.
Supply support for DS90CR481VJD/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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and communications markets.
The DS90CR481VJD/NOPB belongs to TI's Channel Link family of high-speed serializers, designed specifically to replace wide parallel TTL/CMOS buses with compact, noise-immune LVDS links in imaging, video, and test equipment.
FAQ
What is the maximum supported clock frequency for DS90CR481VJD/NOPB?
The DS90CR481VJD/NOPB supports an input clock frequency range of 65 MHz to 112 MHz. At 112 MHz, it achieves 672 Mbps per LVDS lane and a total data throughput of 5.376 Gbits/sec. Operation above 112 MHz is not guaranteed and exceeds absolute maximum ratings specified in the datasheet.
Does DS90CR481VJD/NOPB require external termination resistors?
Yes, DS90CR481VJD/NOPB requires external 100 Ω differential termination resistors at the receiver end (e.g., DS90CR482) for each LVDS data pair and the clock pair. This matches standard twisted-pair cable impedance and prevents signal reflections that degrade eye diagrams and increase bit error rate.
Can DS90CR481VJD/NOPB operate without DC balance enabled?
Yes, DS90CR481VJD/NOPB operates in non-DC-balanced mode when the BAL pin is held LOW. In this mode, it remains compatible with older 21-bit and 28-bit Channel Link receivers and disables deskew functionality, but retains pre-emphasis support for cable drive enhancement.
How is pre-emphasis configured on DS90CR481VJD/NOPB?
Pre-emphasis on DS90CR481VJD/NOPB is configured by applying a DC voltage (0.75 V to VCC) to the PRE pin using a pull-up resistor to VCC. Resistor values from 100 Ω (100% pre-emphasis) to 1 MΩ or open (standard LVDS) set the strength. Table 1 in the datasheet maps Rpre to resulting PRE voltage and effect.
Is DS90CR481VJD/NOPB pin-compatible with other Channel Link transmitters?
No, DS90CR481VJD/NOPB is not pin-compatible with earlier Channel Link transmitters such as DS90CR285 or DS90CR286. Its 100-pin TQFP package, pin assignments (e.g., DS_OPT, PRE, BAL), and feature set (deskew support, enhanced pre-emphasis) differ significantly and require dedicated PCB layout.
DS90CR481VJD/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 100-TQFP
- Packaging:
- Tray
- Product Status:
- Active
- Function:
- Serializer
- Data Rate:
- 5.38Gbps
- Input Type:
- CMOS/TTL
- Output Type:
- LVDS
- Number of Inputs:
- 48
- Number of Outputs:
- 8
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -10°C ~ 70°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-TQFP (14x14)
DS90CR481VJD/NOPB FAQ
1.How can I place an order for DS90CR481VJD/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for DS90CR481VJD/NOPB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DS90CR481VJD/NOPB reliable?
The price and inventory of DS90CR481VJD/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS90CR481VJD/NOPB is usually 5 days.
3.What payment methods are accepted for DS90CR481VJD/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS90CR481VJD/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS90CR481VJD/NOPB?
DS90CR481VJD/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS90CR481VJD/NOPB order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DS90CR481VJD/NOPB?
For technical support, including DS90CR481VJD/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS90CR481VJD/NOPB requirements.
6.How does Aetrix verify that DS90CR481VJD/NOPB is sourced from the original manufacturer or authorized distributors?
All DS90CR481VJD/NOPB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DS90CR481VJD/NOPB meets industry standards.
7.What is the process for return or replacement of DS90CR481VJD/NOPB?
All DS90CR481VJD/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with DS90CR481VJD/NOPB, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DS90CR481VJD/NOPB part is unused and in its original packaging.
Return procedure for DS90CR481VJD/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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