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CDCLVD1204RGTR
Texas Instruments
IC CLK BUFFER 2:4 800MHZ 16VQFN
28508 Pcs New Original In Stock
Clock Fanout Buffer (Distribution), Multiplexer IC 2:4 800 MHz 16-VFQFN Exposed Pad
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5.0 / 5.0
- (85 Ratings)
CDCLVD1204RGTR
Product Overview
1409601
DiGi Electronics Part Number
CDCLVD1204RGTR-DGManufacturer
Texas Instruments
CDCLVD1204RGTR
Description
IC CLK BUFFER 2:4 800MHZ 16VQFNInventory
28508 Pcs New Original In Stock
Clock Fanout Buffer (Distribution), Multiplexer IC 2:4 800 MHz 16-VFQFN Exposed Pad
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
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CDCLVD1204RGTR Technical Specifications
Category
Clock/Timing, Clock Buffers, Drivers
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
Type
Fanout Buffer (Distribution), Multiplexer
Number of Circuits
1
Ratio - Input:Output
2:4
Differential - Input:Output
Yes/Yes
Input
LVCMOS, LVDS, LVPECL
Output
LVDS
Frequency - Max
800 MHz
Voltage - Supply
2.375V ~ 2.625V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-VFQFN Exposed Pad
Supplier Device Package
16-VQFN (3x3)
Base Product Number
CDCLVD1204
Datasheet & Documents
Manufacturer Product Page
CDCLVD1204RGTR Specifications
HTML Datasheet
CDCLVD1204RGTR-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
2 (1 Year)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
296-44350-1
2156-CDCLVD1204RGTR
296-44350-2
296-44350-6
CDCLVD1204RGTR-DG
TEXTISCDCLVD1204RGTR
Standard Package
3,000
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
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de desembre 02, 2025
Qualité supérieure et service client toujours avec le sourire, que demander de plus?
de desembre 02, 2025
Their post-sale technical support is thorough, ensuring our systems operate smoothly long after installation.
de desembre 02, 2025
The quality assurance at DiGi Electronics ensures I receive durable and reliable products.
de desembre 02, 2025
DiGi Electronics consistently impresses with their abundant stock and swift, reliable after-sales support.
de desembre 02, 2025
DiGi consistently provides value for money with their competitive prices and reliable support.
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Frequently Asked Questions (FAQ)
Can the CDCLVD1204RGTR be safely used to replace a SN65LVDS1204 in a 2:4 LVDS clock distribution design without requiring PCB layout changes?
The CDCLVD1204RGTR from Texas Instruments is not a direct drop-in replacement for the SN65LVDS1204 due to differences in pinout, supply voltage range, and package thermal characteristics. While both are 2:4 LVDS clock fanout buffers, the SN65LVDS1204 operates at 3.3V and uses a different pin configuration, whereas the CDCLVD1204RGTR requires a 2.5V supply and is housed in a 16-VQFN (3x3 mm) exposed pad package. Replacing one with the other would likely require PCB re-layout, especially to accommodate the thermal pad and ensure proper grounding. Additionally, input compatibility differs—the CDCLVD1204RGTR accepts LVCMOS, LVDS, and LVPECL inputs, which may require level-shifting if the original design relied on 3.3V LVTTL signaling. Always verify signal integrity and power sequencing before substitution.
What are the key risks when using the CDCLVD1204RGTR in a high-vibration industrial environment near its -40°C lower temperature limit?
Operating the CDCLVD1204RGTR at or near -40°C in high-vibration environments introduces two primary risks: solder joint fatigue due to CTE mismatch between the 16-VQFN package and the PCB, and potential degradation of signal integrity from increased trace resistance and oscillator instability. The exposed thermal pad must be properly soldered with adequate via stitching to prevent mechanical detachment under vibration. At cold temperatures, ensure that the 2.5V supply remains stable, as voltage droop can push the device outside its 2.375V–2.625V operating window, leading to timing jitter or functional failure. Use conformal coating and strain relief on adjacent connectors to mitigate mechanical stress, and validate performance with thermal cycling and shock/vibration testing per IEC 60068-2 standards.
How should I handle input signal selection and termination when designing with the CDCLVD1204RGTR to avoid unintended multiplexer glitches during dynamic input switching?
To prevent glitches when dynamically switching between the two differential inputs on the CDCLVD1204RGTR, implement a break-before-make strategy using external control logic or ensure that only one input is active at a time. The internal multiplexer lacks glitch-free switching, so simultaneous valid inputs can cause output transients. Always terminate unused inputs with proper differential termination (typically 100 Ω across the pair) to prevent noise coupling and reflections. For LVPECL or LVCMOS inputs, use AC or DC coupling with appropriate biasing networks as specified in the datasheet. Route input traces with controlled impedance and minimize skew to maintain timing accuracy, especially when operating near the 800 MHz maximum frequency. Consider adding a small delay in the select signal path to ensure clean transitions.
Is the CDCLVD1204RGTR suitable for driving long backplane traces in a multi-board system, and what design practices minimize signal degradation?
Yes, the CDCLVD1204RGTR is well-suited for driving long backplane traces due to its low-jitter LVDS outputs and high fanout capability, but success depends on careful transmission line design. Use controlled impedance routing (100 Ω differential) with matched trace lengths to minimize skew. Place the device as close as possible to the output connectors to reduce stub effects. Include series termination resistors (typically 10–33 Ω) near the output pins to dampen reflections, especially on traces exceeding 6 inches. Avoid vias in differential pairs when possible, and if necessary, use symmetric via placement. For backplanes longer than 12 inches, consider pre-emphasis or equalization in downstream receivers. Validate eye diagrams at the farthest receiver under worst-case temperature and supply conditions to ensure compliance with system timing budgets.
What reliability concerns should I consider when using the CDCLVD1204RGTR in a 24/7 telecom base station application with frequent thermal cycling?
In 24/7 telecom applications with thermal cycling, the primary reliability concern for the CDCLVD1204RGTR is solder joint integrity under the 16-VQFN exposed pad, which is susceptible to fatigue over repeated -40°C to 85°C cycles. Ensure proper PCB pad design with sufficient thermal vias (9–16 recommended) to improve heat dissipation and mechanical stability. Follow IPC-7093 guidelines for bottom-termination components. Monitor long-term drift in output jitter, as thermal stress can affect internal PLL stability over time. Although the device is rated for industrial temperature ranges and has an MSL 2 rating (1-year floor life), avoid prolonged exposure to high humidity before reflow. Perform accelerated life testing (e.g., thermal shock per JESD22-A104) to validate longevity, and consider conformal coating to protect against condensation and contamination in outdoor enclosures.
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CDCLVD1204RGTR CAD Models
Texas Instruments CDCLVD1204RGTR PCB symbols & footprints
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