CY7B9910-5SXI Cypress Semiconductor Corp, CY7B9910-5SXI Datasheet

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CY7B9910-5SXI

Manufacturer Part Number
CY7B9910-5SXI
Description
IC CLK BUFF SKEW 8OUT 24SOIC
Manufacturer
Cypress Semiconductor Corp
Type
Fanout Distribution, Zero Delay Bufferr
Datasheet

Specifications of CY7B9910-5SXI

Number Of Circuits
1
Package / Case
24-SOIC (7.5mm Width)
Pll
Yes
Input
Clock
Output
TTL
Ratio - Input:output
1:8
Differential - Input:output
No/No
Frequency - Max
80MHz
Divider/multiplier
No/No
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Frequency-max
80MHz
Output Frequency Range
15 MHz to 80 MHz
Supply Voltage (max)
5.5 V
Supply Voltage (min)
4.5 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Operating Supply Voltage
5 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Features
Functional Description
The CY7B9910 and CY7B9920 Low Skew Clock Buffers offer
low skew system clock distribution. These multiple output clock
drivers optimize the timing of high performance computer
systems. Each of the eight individual drivers can drive terminated
transmission lines with impedances as low as 50Ω. They deliver
minimal and specified output skews and full swing logic levels
(CY7B9910 TTL or CY7B9920 CMOS).
The completely integrated PLL enables “zero delay” capability.
External divide capability, combined with the internal PLL, allows
distribution of a low frequency clock that is multiplied by virtually
any factor at the clock destination. This facility minimizes clock
distribution difficulty while allowing maximum system clock
speed and flexibility.
Cypress Semiconductor Corporation
Document Number: 38-07135 Rev. *E
All Outputs Skew <100 ps typical (250 max.)
15 to 80 MHz Output Operation
Zero Input to Output Delay
50% Duty Cycle Outputs
Outputs drive 50Ω terminated lines
Low Operating Current
24-pin SOIC Package
Jitter: <200 ps Peak to Peak, <25 ps RMS
Logic Block Diagram
REF
FB
TEST
FS
198 Champion Court
PHASE
FREQ
DET
FILTER
Block Diagram Description
Phase Frequency Detector and Filter
The Phase Frequency Detector and Filter blocks accept inputs
from the reference frequency (REF) input and the feedback (FB)
input and generate correction information to control the
frequency of the Voltage Controlled Oscillator (VCO). These
blocks, along with the VCO, form a Phase Locked Loop (PLL)
that tracks the incoming REF signal.
VCO
The VCO accepts analog control inputs from the PLL filter block
and generates a frequency. The operational range of the VCO is
determined by the FS control pin.
CONTROLLED
OSCILLATOR
VOLTAGE
San Jose
Low Skew Clock Buffer
,
CA 95134-1709
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Revised March 10, 2010
CY7B9910
CY7B9920
408-943-2600
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CY7B9910-5SXI Summary of contents

Page 1

... Jitter: <200 ps Peak to Peak, <25 ps RMS Functional Description The CY7B9910 and CY7B9920 Low Skew Clock Buffers offer low skew system clock distribution. These multiple output clock drivers optimize the timing of high performance computer systems. Each of the eight individual drivers can drive terminated transmission lines with impedances as low as 50Ω ...

Page 2

... PWR Ground. Test Mode The TEST input is a three level input. In normal system operation, this pin is connected to ground, allowing the CY7B9910 and CY7B9920 to operate as described in Block Diagram removable jumper to ground or be tied LOW through a 100Ω resistor. This enables an external tester to change the state of these pins. ...

Page 3

... CC Min ≤ V ≤ Max V /2 – 500 mV Min ≤ V ≤ Max 0 Max Max Max 0.4V –500 CC IN note 3 for variable definition. CY7B9910 CY7B9920 Ambient Temperature V CC ° ° 5V ± 10 +70 C ° ° 5V ± 10% – +85 C CY7B9920 Max Min Max Unit V V –0. ...

Page 4

... Tested initially and after any design or process changes that may affect these parameters. Parameter Description C Input Capacitance IN 5V R1=130 R1 R2= (Includes fixture and probe capacitance 7B9910–3 TTL AC Test Load (CY7B9910 R1=100 R2=100 (Includes fixture and probe capacitance 7B9910–5 CMOS AC Test Load (CY7B9920) Document Number: 38-07135 Rev. *E Test Conditions V ...

Page 5

... Applies to REF and FB inputs only. 11. Test measurement levels for the CY7B9910 are TTL levels (1.5V to 1.5V). Test measurement levels for the CY7B9920 are CMOS levels (VCC/2 to VCC/2). Test conditions assume signal transition times less and output loading as shown in the AC Test Loads and Waveforms unless otherwise specified. ...

Page 6

... Document Number: 38-07135 Rev. *E CY7B9910–7 Min Typ [ LOW 15 [ MID HIGH 40 5.0 5.0 [13, 14] 0.3 –0.7 0.0 [16] –1.2 0.0 0.15 1.5 0.15 1.5 [8] Peak to Peak [8] RMS CY7B9910 CY7B9920 CY7B9920–7 Max Min Typ Max Unit MHz [12 5.0 ns 5.0 ns 0.75 0.3 0.75 ns 1.5 1.5 ns +0.7 – ...

Page 7

... Figure 4. Zero Skew and Zero Delay Clock Driver FB SYSTEM REF CLOCK FS TEST Document Number: 38-07135 Rev. *E Figure 3. AC Timing Diagrams t t REF RPWL t RPWH t ODCV t ODCV t SKEW t SKEW REF CY7B9910 CY7B9920 t JR LOAD Z 0 LOAD Z 0 LOAD Z 0 LOAD Z 0 Page [+] Feedback ...

Page 8

... Figure 3 shows the CY7B9910/9920 connected in series to construct a zero skew clock distribution tree between boards. Cascaded clock buffers accumulates low frequency jitter because of the non-ideal filtering characteristics of the PLL filter. ...

Page 9

... CY7B9920–5SC [20] CY7B9920–5SCT [20] CY7B9920–5SI Pb-free 250 CY7B9910–2SXC CY7B9910–2SXCT 500 CY7B9910–5SXC CY7B9910–5SXCT CY7B9910–5SXI CY7B9910–5SXIT 750 CY7B9910–7SXC CY7B9910–7SXCT Package Diagram Figure 6. 24-Pin (300-Mil) Molded SOIC S13 PIN 0.291[7.391] 0.300[7.620 0.026[0.660] 0.032[0.812] 0.597[15.163] 0.615[15.621] ...

Page 10

... Document History Page Document Title: CY7B9910/CY7B9920 Low Skew Clock Buffer Document Number: 38-07135 Orig. of Submission Revision ECN Change ** 110244 SZV *A 1199925 DPF/AESA *B 1353343 AESA *C 2750166 TSAI *D 2761988 CXQ *E 2896073 CXQ Sales, Solutions, and Legal Information Worldwide Sales and Design Support Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office ...

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