CY7B9945V-2AI Cypress Semiconductor Corp, CY7B9945V-2AI Datasheet
CY7B9945V-2AI
Specifications of CY7B9945V-2AI
Related parts for CY7B9945V-2AI
CY7B9945V-2AI Summary of contents
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... PRELIMINARY High Speed Multi-phase PLL Clock Buffer Functional Description The CY7B9945V high speed multi-phase PLL clock buffer offers user selectable control over system clock functions. This multiple output clock driver provides the system integrator with functions necessary to optimize the timing of high performance computer and communication systems ...
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... FBDS[0:1] and FBF0, respectively. See Table 3 and Table 4. LVTTL PLL Lock Indicator. When HIGH, this output indicates that the internal PLL is locked to the reference signal. When LOW, it indicates that the PLL is attempting to acquire lock RoboClock CY7B9945V 39 REFA- 38 REFSEL 37 REFB- 36 REFB+ 35 1F2 ...
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... The PLL adjusts the phase and the frequency of its output signal to minimize the delay between the reference (REFA/B+, REFA/B-) and the feedback (FB) input signals. The CY7B9945V has a flexible REF input scheme. These inputs enable the use of either differential LVPECL or single ended LVTTL inputs. To configure as single ended LVTTL inputs, leave the complementary pin open (internally pulled to 1 ...
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... HIGH. When disabled to the HOLD OFF state, outputs are driven to a logic LOW state on their falling edges. This makes certain that the output clocks are stopped without a glitch. When a bank of RoboClock CY7B9945V skew. The PLL U matrix shifts with respect to REF. For U ...
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... MODE LOW MID ENABLED HI the V and Phase Generator. f NOM CO when the output connected undivided. NOM ® RoboClock CY7B9945V DIS[1:2] 1Q[0:3], 2Q[0:5] HIGH HOLD-OFF X FACTORY TEST always appears on an output when the output NOM ). Internal termination resistors hold the CC time before LOCK ...
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... MHz is 6. Figure 3. Typical Safe Operating Zone Typical Safe Operating Zone (25-pF Load, 0-m/s air flow) 100 Safe Operating Zone Number of Outputs at 185 MHz ® RoboClock CY7B9945V Page [+] Feedback ...
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... IN –400 400 1.0 GND 0.8 [ Max, f – CC MAX V = Max – CC LOAD pF 50Ω /2, LOAD CC f MAX ® RoboClock CY7B9945V V CC ° ° 3.3V ±10 +70 C ° ° 3.3V ±10% – +85 C Max Unit – V – V 0.5 V 0.5 V μA 100 V + 0.3 ...
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... MHz 3. Description [12, 13] [12, 13] and SKEW0 [14, 15] [16] [5] [5] [11] [19] [19] [20] [12, 21] [21, 22] RoboClock CY7B9945V Min Max Unit – CY7B9945V-2 CY7B9945V-5 Unit Min Max Min Max 24 200 24 200 MHz 24 200 24 200 MHz – 200 – 200 ps – 250 – 250 ps – 250 – ...
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... LVTTL AC Test Load 2.0V 2.0V 0.8V < (b) TTL Input Test Waveform Figure 5. AC Timing Diagram t SKEWPR t PWL 0.8V t CCJ1-3,4-12 [1:2]Q[0:3] t SKEWBNK [1:2]Q[0: SKEW0,1 Other 185 MHz 200 MHz L RoboClock CY7B9945V [22] 3. 0.8V < [1:2]Q[0,2] t SKEWPR [1:2]Q[1,3] t SKEWBNK t ODCV t ODCV t SKEW0,1 Page ® [+] Feedback ...
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... Ordering Information Propagation Max. Speed Ordering Code Delay (ps) (MHz) 250 200 CY7B9945V-2AC 500 200 CY7B9945V-5AC 250 200 CY7B9945V-2AI 200 CY7B9945V-2AIT 500 200 CY7B9945V-5AI Pb-free 250 200 CY7B9945V-2AXC 200 CY7B9945V-2AXCT 250 200 CY7B9945V-2AXI 200 CY7B9945V-2AXIT 500 200 CY7B9945V-5AXC 200 CY7B9945V-5AXCT Package Diagram Figure 6 ...
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... Document History Page Document Title: CY7B9945V RoboClock Document Number: 38-07336 Orig. of Submis- Revision ECN Change sion Date ** 111747 CTK 03/04/02 New Data Sheet *A 116572 HWT 09/05/02 Added TTB Features *B 119078 HWT 10/16/02 Corrected the following items in the Electrical Characteristics table: *C 124645 ...