• Gate and Transistors of CY2305 – KBA86887

    Version: *B   Question: How many transistors and gates does the CY2305SXC-1HT part have?   Answer: Cypress’s CY2305 part family has approximately 5200 transistors or 1300 gates.
    chaitanyav_41
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  • CY2305 Behavior on Removal of Input Reference - KBA82621

    Version: **   Question: What is the effect on the CY2305 output when the input reference clock is removed?   Answer: The output usually holds the original frequency for only a few cycles. Generally, you c...
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  • Worst Case Rise and Fall Times of CY2CC910 at 3.3 V - KBA82630

    Version: **   Question: What are the Worst Case Rise(Tr) and Fall times(Tf) of CY2CC910 at 3.3-V VDD?    Answer: Based on characterization data, the worst case Rise(Tr) and Fall times(Tf) are mention...
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  • 3.3V-Compatible RoboClocks

    Question: What all RoboClocks are 3.3V-compatible?   Answer: The Low Voltage RoboClock (CY7B991V) and RoboClock (CY7B9911V) are completely 3.3V-compatible. The original RoboClock CY7B991/2 (along with the CY7B9...
    userc_44961
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  • Spread Spectrum Clock (SSC) Input to Cypress Clock Device

    Question: Can I give Spread Spectrum Clock (SSC) input to any Cypress Clock device?   Answer: No, this is not true for Cypress clock devices which have on chip PLL. When SSC is given as input to Non-Zero Delay B...
    userc_44961
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  • Power-up Condition Cause A Device To Misbehave For 5V RoboClock

    Question: Are there any power-up conditions that cause the part to misbehave for 5V RoboClock?   Answer: Yes, there are. It is mentioned in Note 3 of the CY7B991/2, CY7B9911 datasheets; and Note 11 of the CY7...
    userc_44961
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  • Premis SSCG filter values below 1%

    Question: I need to set the FS781 filter values to give 0.3%, 0.5% and 0.7% spread bandwidth. They are running at 32MHz. What would the capacitor values be?   Answer: In general the FS781 PLL design does not su...
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  • 3.3V input clock into the CY23EP05 or CY23EP09 operating at 2.5V

    Question: When operating the CY23EP05 or CY23EP09 at 2.5V, can I drive it with a 3.3V input clock?   Answer: The datasheet specifies a maximum input voltage, VIH, of VDD + 0.3V.  This specification reflect...
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  • Edge Rate of CY23EP05

    Question: Can the edge rate of the CY23EP05 meet 1.5V/ns when the frequency is 66 MHz and CL=30pf?   Answer: The CY23EP05 cannot deliver a slew rate of 1.5V/ns at the 30pF load. The spec for rise/fall time @ 30...
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  • Exposed paddle connection for the CY2DP1510

    Question: The exposed paddle of the CY2DP1510 has no electrical connection. Can it be left floating?   Answer: The exposed paddle of the CY2DP1510 must be soldered to the ground plane for heat dissipation purpos...
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  • Input Requirement / 5V Tolerance of CY23FS04

    Question: Is there any Trise and Tfall (slew rate) requirement for the input of the Xtal input (Xin) of CY23FS04? Is the input pin (Xin) 5V tolerant?   Answer: The XIN and XOUT are crystal input pins for CY23FS0...
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  • Measured Jitter for CY29946

    Question: What is the period and cycle to cycle jitter when banks A and B are at 25MHz and bank C at 50MHz?   Answer: The following jitter measurements have banks A and B at 25 MHz, bank C at 50 MHz. ...
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  • CY2302 Transistor Count, Technology and Gate Count

    Question: What is the technology, die size, transistor and gate count for CY2302?   Answer: For the CY2302: It's a 0.5 micron technology. The die size is 79x71 mil. And there are 2056 gates.
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  • Input frequency range for the CY2302

    Question: What is the input frequency range for the CY2302 zero delay buffer?   Answer: The allowed input frequency range for the CY2302 is determined by the output multiplication settings selected and the permi...
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  • Maximum junction temperature and Theta JC thermal resistance of CY2302SXI-1 part

    Question: What are the values of Maximum junction temperature and Theta JC thermal resistance of CY2302SXI-1 part?   Answer: For CY2302SXI-1 part,Maximum junction temperature value is 173.36 degree Centigrade a...
    DineshbabuM_66
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  • REF Input Frequency Range for RoboClock

    Question: What is the REF input frequency range for RoboClock?   Answer:   If the FB input is connected to an undivided output, the REF input frequency range will be the same as Fnom operation frequency ran...
    userc_44961
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  • Difference in Maximum VCO and Output Frequencies of CY7B9945V

    Question: Why the maximum output frequency is 200MHz when the VCO frequency can go upto 800MHz in CY7B9945?   Answer: Although CY7B9945V VCO goes up to 800 MHz, there's always a divide by 4 internally (not show...
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    last modified by userc_44961
  • Maximum junction temperature (Tj) and junction-to-ambient thermal resistance (Theta JA) for the CY29947

    Question: What is the maximum junction temperature (Tj) and thermal resistantance (Theta JA) for the CY29947?   Answer: For the CY29947, Tj max is 150C and Theta JA is 80 C/W.
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  • Configuring CY7B994V for 33, 66, 100 and 133 MHz Outputs

    Question: Can CY7B994V output 33, 66, 100, 133 MHz simultaneously?   Answer: For CY7B994V, the internal VCO ranges from 400MHz to 800MHz. But there is an extra divider between VCO output and output divider. The...
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  • CY29947 FIT Rate

    Question: What is the FIT rate for the CY29947?   Answer: The failure rate for the CY29947 is less than 1.1 FITs. This is based on an equivalent of 879 million hours of life test data at an operating condition ...
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