特性
- 8-pin SOIC package
- Four addressable registers
- Input crystal frequency of 5 to 27 MHz
- Clock input frequency of 3 to 150 MHz
- Output clock frequencies up to 200 MHz
- Configurable Spread Spectrum Modulation
- Operating voltage of 3.3 V
- Replaces multiple crystals and oscillators
- Controllable output drive levels
- Advanced, low-power CMOS process
- Available in RoHS compliant packaging
- click here for VersaClock Software page
描述
The IDT251 is a low cost, single-output, field programmable clock synthesizer. The IDT251 can generate an output frequency from 314 kHz to 200 MHz and may employ Spread Spectrum techniques to reduce system electro-magnetic interference (EMI). Using IDT's VersaClock™ software to configure the PLL and output, the IDT251 contains a One-Time Programmable (OTP) ROM to allow field programmability. Programming features include 4 selectable configuration registers. The device employs Phase-Locked Loop (PLL) techniques to run from a standard fundamental mode, inexpensive crystal, or clock. It can replace multiple crystals and oscillators, saving board space and cost. The device also has a power-down feature that tri-states the clock outputs and turns off the PLLs when the PDTS pin is taken low. The IDT251 is also available in factory programmed custom versions for high-volume applications.
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