Clock Generators feature low jitter of 60 ps.

Press Release Summary:

Ranging from 1-4 phase-lock loops, Series CDCE9xx provides 2.5 or 3.3 V outputs, while Series CDCEL9xx provides 1.8 V outputs. Each PLL supports spread-spectrum clocking to minimize EMI, enabling compliance with EMC regulations. Units can generate up to 9 output clock sources from single input frequency, and each output can be programmed in-system for any clock frequency up to 230 MHz. Users can program and customize devices in-system through I2C and EEPROM.

Original Press Release:

TI Introduces Industry's Most Flexible 3.3-V, 2.5-V and 1.8-V Clock Generator Family

Low-Jitter, One- to Four-PLL Devices Ease Design for Consumer Applications

DALLAS (July 10, 2007) - Texas Instruments (TI) (NYSE: TXN) today introduced a family of highly-programmable, one to four phase-lock loop (PLL) clock generator devices with the ability to generate up to nine output clock sources from a single input frequency. Each output can be programmed in-system for any clock frequency up to 230 MHz. These features provide a number of system benefits such as reduced power consumption, shorter lead time and the flexibility to easily upgrade the clock without redesigning the system. These benefits ultimately reduce cost for a broad range of consumer applications such as IP set-top boxes or phones, digital media systems such as digital televisions, streaming media and printers, navigation systems and portable devices. (See

The new CDCE9xx and CDCEL9xx family of clock generators ranges from one to four PLLs with very low jitter at 60 picoseconds typical. The CDCE9xx devices provide either 2.5-V or 3.3-V outputs, and the CDCEL9xx provide 1.8-V outputs, enabling the low-power capability needed for portable devices. Each PLL supports spread-spectrum clocking (SSC) to reduce electro-magnetic interference (EMI) to enable compliance with EMC regulations.

The family provides a variety of programmability options including the ability to program and customize the devices in-system through I2C and EEPROM. By offering footprint compatibility across the family, designers can adapt the system design easily without changing hardware, which reduces cost and enables the designer to simply increase or decrease the number of clock outputs. The new family of devices further simplifies system design by replacing a number of components in the system including crystals, oscillators, buffers and PLLs.

The new clock devices are optimized to work with TI's DaVinci(TM)-based processors by generating any audio, video, processor or interface clock to drive the digital processor, audio digital-to-analog converter or codec and Ethernet or USB controller. The on-chip voltage-controlled crystal oscillator (VCXO) allows frequency synchronization of different data streams.

TI provides a wide selection of timing support devices, both PLL-based and non-PLL-based, to support consumer, communications and memory applications. Information on the complete line of clock products from TI is in the Clocks and Timers Selection Guide, available at

New Clock Generator Family

Device Name     # PLLs               Output           Price/1k units
CDCE949 4 2.5/3.3 V $2.20
CDCE937 3 2.5/3.3 V $2.00
CDCE925 2 2.5/3.3 V $1.80
CDCE913 1 2.5/3.3 V $1.60
CDCEL949 4 1.8 V $2.20
CDCEL937 3 1.8 V $2.00
CDCEL925 2 1.8 V $1.80
CDCEL913 1 1.8 V $1.60

The CDCE949 is available now in 24-pin TSSOP package. The remaining devices in the family will be available throughout 2007 in 20-pin, 16-pin and 14-pin TSSOP packages. In addition, evaluation modules (EVMs) to evaluate the performance of the family are available.

About Texas Instruments
Texas Instruments Incorporated provides innovative DSP and analog technologies to meet our customers' real world signal processing requirements. In addition to Semiconductor, the company includes the Education Technology business. TI is headquartered in Dallas, Texas, and has manufacturing, design or sales operations in more than 25 countries.

Texas Instruments is traded on the New York Stock Exchange under the symbol TXN. More information is located on the World Wide Web at

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