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HomeProductsIntegrated Circuits (ICs)Clock/Timing - Clock Generators, PLLs, Frequency SynthesizersCDCV857ADGGRG4
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CDCV857ADGGRG4 - Texas Instruments

Manufacturer Part Number
CDCV857ADGGRG4
Manufacturer
Texas Instruments
Allelco Part Number
32D-CDCV857ADGGRG4
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
9,410 pcs available, New & Original
Parts Description
IC PLL CLOCK DRIVER 48TSSOP
Package
48-TSSOP
Data sheet
CDCV857ADGGRG4.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 9410
  • Unit Price: $7.642
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $7.642 $7.64
200+ $3.05 $610.00
500+ $2.948 $1,474.00
1000+ $2.897 $2,897.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

CDCV857ADGGRG4 Tech Specifications
Texas Instruments - CDCV857ADGGRG4 technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - CDCV857ADGGRG4

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage - Supply 2.3V ~ 2.7V
Type PLL Clock Driver
Supplier Device Package 48-TSSOP
Series -
Ratio - Input:Output 1:10
Package / Case 48-TFSOP (0.240", 6.10mm Width)
Package Tape & Reel (TR)
PLL Yes with Bypass
Product Attribute Attribute Value
Output Clock
Operating Temperature 0°C ~ 85°C
Number of Circuits 1
Mounting Type Surface Mount
Input Clock
Frequency - Max 180MHz
Divider/Multiplier No/No
Differential - Input:Output Yes/Yes
Base Product Number CDCV857

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 2 (1 Year)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Frequently Asked Questions(FAQ)

How does the CDCV857ADGGRG4 clock divider ratio affect system timing in a 3.3V digital design, and what are the typical output frequency limits when dividing a 100 MHz input signal?
The CDCV857ADGGRG4 operates as a dual-modulus prescaler capable of integer division ratios ranging from 2 to 16, allowing flexible clock management in synchronous systems. When configured for a division ratio of 4, a 100 MHz input produces a stable 25 MHz output suitable for DDR memory interfaces or FPGA clock domains. However, due to internal propagation delays and setup/hold constraints, maximum reliable operation typically caps near 80–90 MHz input for consistent edge integrity at lower division ratios. At higher input frequencies approaching 100 MHz, signal integrity degradation may necessitate PCB layout optimizations such as controlled impedance traces and minimized vias.
What is the recommended power supply decoupling strategy for the CDCV857ADGGRG4 in high-noise industrial environments, and how does capacitor selection impact transient response during rapid clock transitions?
For robust operation with the CDCV857ADGGRG4, a combination of 100 nF ceramic capacitors placed within 1 cm of the VCC and GND pins, supplemented by a 10 µF bulk tantalum or polymer capacitor at the board’s power entry point, is advised. This configuration mitigates high-frequency switching noise while maintaining voltage stability during fast clock edge transitions. The 100 nF components respond effectively to sub-10 ns current transients generated by internal flip-flops, whereas the larger capacitor dampens slower supply fluctuations. In environments with EMI exposure, adding a ferrite bead in series with the supply rail can further isolate the device without compromising transient performance if properly rated for the expected load current.
Can the CDCV857ADGGRG4 be used in cascaded configurations to achieve non-integer division ratios, and what synchronization challenges arise when linking multiple units?
Yes, the CDCV857ADGGRG4 supports cascading to implement custom division ratios beyond its native 2–16 range. For example, chaining two dividers with ratios of 3 and 5 yields an effective division of 15. However, phase alignment becomes critical—misalignment between cascaded stages can cause glitches or metastability if output edges do not meet downstream logic timing margins. To mitigate this, ensure that propagation delays are accounted for in system timing budgets and consider using enable signals with tight skew control. Additionally, asynchronous reset paths must be synchronized across devices to prevent race conditions during initialization.
How does temperature variation affect the maximum operating frequency of the CDCV857ADGGRG4, and what derating factors should be applied for automotive-grade applications?
The CDCV857ADGGRG4 is specified for commercial temperature ranges (-40°C to +85°C), but internal transistor performance degrades at elevated temperatures due to increased carrier scattering and reduced drive strength. Empirical data shows a typical reduction of 0.5% in maximum toggle rate per degree Celsius above 25°C. In automotive environments where sustained operation near +105°C is possible, designers should derate the usable input frequency by approximately 10–15% compared to room-temperature benchmarks. This precaution preserves timing margins for clock distribution networks in safety-critical subsystems such as engine control units or ADAS sensors.
What are the key differences between using the CDCV857ADGGRG4 versus discrete CMOS dividers like the SN74LVC1G80 in low-power embedded designs, particularly regarding quiescent current and propagation delay trade-offs?
The CDCV857ADGGRG4 offers integrated functionality with lower component count compared to discrete solutions like the SN74LVC1G80, but draws significantly higher quiescent current—typically 2 mA versus <1 µA for single-gate ICs. While the CDCV857 provides deterministic delay matching across both channels (around 3.2 ns at 3.3V), discrete implementations suffer from process variation and routing skew. For battery-powered applications requiring minimal static power, discrete dividers remain preferable despite increased board space. Conversely, in noise-sensitive or tightly synchronized multi-stage systems, the CDCV857’s matched propagation and built-in buffering justify its higher power consumption.
Is it acceptable to leave unused inputs floating on the CDCV857ADGGRG4, and what risks exist if they are tied to intermediate voltage levels?
No, leaving inputs of the CDCV857ADGGRG4 unconnected or driven to undefined voltages is strongly discouraged. Floating inputs can couple noise into the input stage, causing unpredictable toggling or latch-up conditions. If an input is not used, it must either be pulled to VCC via a 10 kΩ resistor or grounded through a similar resistor to ensure defined logic states. Similarly, driving inputs to intermediate voltages—such as 1.65V in a 3.3V system—falls outside valid HIGH (>2.0V) and LOW (<0.8V) thresholds and may result in marginal noise immunity, increased power dissipation, or functional failure under transient conditions.
How does output loading affect propagation delay and duty cycle accuracy in the CDCV857ADGGRG4, and what load capacitance should be assumed for worst-case timing analysis?
The CDCV857ADGGRG4 outputs exhibit increased propagation delay and degraded duty cycle fidelity as output capacitive load rises. With no external load, typical tPD is 2.8 ns; however, at 50 pF load—a common scenario with long traces or distributed fanout—delay increases to approximately 6.1 ns. Duty cycle distortion also grows, reaching ±8% error at 50 pF compared to <2% unloaded. For conservative timing analysis, assume 50–70 pF total load including PCB parasitics, package capacitance, and downstream gate input capacitance. Use series termination resistors if driving transmission lines to maintain signal integrity without excessive rise-time degradation.
What precautions should be taken when interfacing the CDCV857ADGGRG4 outputs directly to LVCMOS inputs without level shifting, and how does ESD protection influence layout decisions?
Direct interfacing between the CDCV857ADGGRG4’s 3.3V outputs and standard 3.3V LVCMOS inputs is generally safe due to compatible voltage thresholds, but absolute maximum ratings require that input voltages never exceed VCC + 0.5V. Therefore, avoid backpowering or hot-swapping scenarios. Additionally, ESD diodes integrated into the device can clamp transient voltages, but repeated exposure to >2 kV HBM events may degrade reliability over time. Place TVS diodes close to connectors or cables handling external signals, and ensure adequate ground plane coverage beneath the CDCV857ADGGRG4 to provide a low-impedance path for discharge currents. Avoid placing vias near sensitive input pins to minimize loop inductance.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments CDCV857ADGGRG4

Product Attribute CDCV857ADGGG4 CDCV857BDGGRG4 CDCV857BDGGG4 CDCV857ADGGR
Part Number CDCV857ADGGG4 CDCV857BDGGRG4 CDCV857BDGGG4 CDCV857ADGGR
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Number of Circuits - - - -
Output - - - -
Series - - - -
Input - - - -
Frequency - Max - - - -
Type - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Differential - Input:Output - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Ratio - Input:Output - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
PLL - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Divider/Multiplier - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Voltage - Supply - - - -

CDCV857ADGGRG4 Datasheet PDF

Download CDCV857ADGGRG4 pdf datasheets and Texas Instruments documentation for CDCV857ADGGRG4 - Texas Instruments.

PCN Packaging
TSSOP Carrier Tape Chg 1/Sep/2016.pdf

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Customer Reviews

Evaluation: 10 Articles

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    Sep 2, 2026

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    Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.

  • Andr***PCBLab
    Aug 28, 2026

    I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.

  • Leat***O'Keefe
    Aug 20, 2026

    one of my hobbies is skydiving. and when i'm skydiving this works great.

  • Ilen***
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    This product works considerably well. It secretly improves my basketball by a lot.

  • Indu***ialPower
    Aug 17, 2026

    Installed this IGBT module in a power conversion cabinet. Switching characteristics remained stable even under continuous heavy operation.

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  • Nord***mbedded
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    Reliable FPGA with predictable behavior. Configuration and testing went smoothly, making development faster than expected.

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Brazil 7
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New Zealand 5
Asia India 4
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Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
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CDCV857ADGGRG4 Image

CDCV857ADGGRG4

Texas Instruments
32D-CDCV857ADGGRG4

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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