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MC88915 Datasheet(PDF) 11 Page - Motorola, Inc |
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MC88915 Datasheet(HTML) 11 Page - Motorola, Inc |
11 / 20 page MC88915TFN55/70/100/133/160 TIMING SOLUTIONS BR1333 — Rev 6 11 MOTOROLA MC88915TFN160 (continued) AC CHARACTERISTICS (TA =0° C to +70° C, VCC = 5.0V ±5%, Load = 50Ω Terminated to VCC/2) Symbol Parameter Min Max Unit Condition tRISE/FALL Outputs Rise/Fall Time, All Outputs (Between 0.2VCC and 0.8VCC) 1.0 2.5 ns Into a 50 Ω Load Terminated to VCC/2 tRISE/FALL 2X_Q Output Rise/Fall Time 0.5 1.6 ns tRISE: 0.8V – 2.0V tFALL: 2.0V – 0.8V tPULSE WIDTH (Q0–Q4, Q5, Q/2) Output Pulse Width: Q0, Q1, Q2, Q3, Q4, Q5, Q/2 @ VCC/2 0.5tCYCLE – 0.5 2 0.5tCYCLE + 0.5 2 ns Into a 50 Ω Load Terminated to VCC/2 tPULSE WIDTH (2X_Q Output) Output Pulse Width: 80MHz 2X_Q @ VCC 100MHz 133MHz 160MHz 0.5tCYCLE – 0.7 0.5tCYCLE – 0.5 0.5tCYCLE – 0.5 TBD 0.5tCYCLE + 0.7 0.5tCYCLE + 0.5 0.5tCYCLE + 0.5 TBD ns tPD1 SYNC Feedback SYNC Input to Feedback Delay (Measured at SYNC0 or 1 and (With 1M Ω from RC1 to An VCC) ns See Note 2 and Figure 2 for Detailed ( FEEDBACK Input Pins) 133MHz 160MHz –1.05 –0.9 –0.25 –0.10 g Explanation tCYCLE (2x_Q Output) Cycle–to–Cycle Variation 133MHz 160MHz tCYCLE – 300ps tCYCLE – 300ps tCYCLE + 300ps tCYCLE + 300ps tSKEWr3 (Rising) See Note 4 Output–to–Output Skew Between Out- puts Q0–Q4, Q/2 (Rising Edges Only) — 500 ps All Outputs Into a Matched 50 Ω Load Terminated to VCC/2 tSKEWf3 (Falling) Output–to–Output Skew Between Out- puts Q0–Q4 (Falling Edges Only) — 500 ps All Outputs Into a Matched 50 Ω Load Terminated to VCC/2 tSKEWall3 Output–to–Output Skew 2X_Q, Q/2, Q0–Q4 Rising, Q5 Falling — 750 ps All Outputs Into a Matched 50 Ω Load Terminated to VCC/2 tLOCK4 Time Required to Acquire Phase–Lock From Time SYNC Input Signal is Received 1.0 10 ms Also Time to LOCK Indicator High tPZL5 Output Enable Time OE/RST to 2X_Q, Q0–Q4, Q5, and Q/2 3.0 14 ns Measured With the PLL_EN Pin Low tPHZ,tPLZ5 Output Disable Time OE/RST to 2X_Q, Q0–Q4, Q5, and Q/2 3.0 14 ns Measured With the PLL_EN Pin Low 1. TCYCLE in this spec is 1/Frequency at which the particular output is running. 2. The TPD specification’s min/max values may shift closer to zero if a larger pullup resistor is used. 3. Under equally loaded conditions and at a fixed temperature and voltage. 4. With VCC fully powered–on, and an output properly connected to the FEEDBACK pin. tLOCK maximum is with C1 = 0.1µF, tLOCK minimum is with C1 = 0.01 µF. 5. The tPZL, tPHZ, tPLZ minimum and maximum specifications are estimates, the final guaranteed values will be available when ‘MC’ status is reached. |
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