CY2SSTV857ZXC-27 Silicon Laboratories Inc, CY2SSTV857ZXC-27 Datasheet

CY2SSTV857ZXC-27

Manufacturer Part Number

CY2SSTV857ZXC-27

Description

Clock Buffer 2.5V 60-200MHz 1:10 Diff DDR266/333 B/D

Manufacturer

Silicon Laboratories Inc

Datasheet

1.CY2SSTV857ZI-27.pdf (8 pages)

Specifications of CY2SSTV857ZXC-27

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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Rev 1.0, November 21, 2006

2200 Laurelwood Road, Santa Clara, CA 95054

Features

• Operating frequency: 60 MHz to 200 MHz

• Supports 266, 333 MHz DDR SDRAM

• 10 differential outputs from 1 differential input

• Spread-Spectrum-compatible

• Low jitter (cycle-to-cycle): < 75

• Very low skew: < 100 ps

• Power management control input

• High-impedance outputs when input clock < 10 MHz

• 2.5V operation

• Pin-compatible with CDC857-2 and -3

• 48-pin TSSOP package

• Industrial temp. of –40° to +85° C

• Conforms to JEDEC DDR specification

Block Diagram

A V D D

F B IN #

C LK #

C LK

F B IN

P D #

Differential Clock Buffer/Driver DDR333/PC2700-Compliant

3 7

1 6

3 6

3 5

1 3

1 4

P ow erdo w n

T es t a nd

P LL

L ogic

Tel:(408) 855-0555

1 0

2 0

1 9

2 2

2 3

4 6

4 7

4 4

4 3

3 9

4 0

2 9

3 0

2 7

2 6

3 2

3 3

Description

The CY2SSTV857-27 is a high-performance, low-skew,

low-jitter zero-delay buffer designed to distribute differential

clocks in high-speed applications. The CY2SSTV857-27

generates ten differential pair clock outputs from one differ-

ential pair clock input. In addition, the CY2SSTV857-27

features differential feedback clock outputs and inputs. This

allows the CY2SSTV857-27 to be used as a zero-delay buffer.

When used as a zero-delay buffer in nested clock trees, the

CY2SSTV857-27 locks onto the input reference and translates

with near-zero delay to low-skew outputs.

Y 2

Y 2#

Y 3

Y 3#

Y 4

Y 4#

Y 5

Y 5#

Y 6

Y 6#

Y 7

Y 7#

Y 8

Y 8#

Y 9

Y 9#

Y 0

Y 0#

Y 1

Y 1#

F B O U T

F B O U T #

Pin Configuration

Fax:(408) 855-0550

V D D Q

A V D D

A V S S

C L K #

V S S

C L K

Y 0 #

Y 1 #

Y 2 #

Y 3 #

Y 4 #

Y 0

Y 1

Y 2

Y 3

Y 4

CY2SSTV857-27

1 0

1 1

1 2

1 3

1 4

1 5

1 6

1 7

1 8

1 9

2 0

2 1

2 2

2 3

2 4

www.SpectraLinear.com

4 8

4 7

4 6

4 5

4 4

4 3

4 2

4 1

4 0

3 9

3 8

3 7

3 6

3 5

3 4

3 3

3 2

3 1

3 0

2 9

2 8

2 7

2 6

2 5

Page 1 of 8

P D #

V D D Q

Y 5

Y 6

Y 7

Y 8

Y 9

V S S

Y 5 #

Y 6 #

V S S

Y 7 #

F B IN

V S S

Y 8 #

Y 9 #

V S S

V D D Q

F B IN #

F B O U T #

F B O U T

V D D Q

Related parts for CY2SSTV857ZXC-27

CY2SSTV857ZXC-27 Summary of contents

Page 1

Differential Clock Buffer/Driver DDR333/PC2700-Compliant Features • Operating frequency: 60 MHz to 200 MHz • Supports 266, 333 MHz DDR SDRAM • 10 differential outputs from 1 differential input • Spread-Spectrum-compatible • Low jitter (cycle-to-cycle): < 75 • Very low skew: ...

Page 2

Pin Description Pin Number Pin Name I/O 13, 14 CLK, CLK# 35 FBIN# 36 FBIN 3, 5, 10, 20, 22 Y(0: 19, 23 Y#(0:4) O 27, 29, 39, 44, 46 Y(9:5) O 26, 30, 40, 43, ...

Page 3

Table 1. Function Table Inputs AVDD PD# CLK GND H L GND 2. 2. 2.5V H < 10 MHz CLKIN FBIN FBOUT CLKIN Yx or ...

Page 4

Yx DDR _SDRAM represents a capacitive load CLK 120 Ohm CLK# 120 Ohm Output load capacitance for 2 DDR-SDRAM Loads: 5 pF< CL< DDR-SDRAM represents a capacitive load CLK 120 Ohm CLK# 120 Ohm Output load capacitancce for ...

Page 5

Figure 6. Differential Signal Using Direct Termination Resistor Rev 1.0, November 21, 2006 ...

Page 6

Absolute Maximum Conditions Input Voltage Relative to V :............................... V SS Input Voltage Relative DDQ DD Storage Temperature: ................................ –65° 150° C Operating Temperature:.................................... 0° +85° C Maximum Power Supply: ................................................ ...

Page 7

AC Electrical Specifications (AV Parameter Description [12 Output Enable Time PZL PZH (all outputs) [12 Output Disable Time PLZ PHZ (all outputs) [10] t Cycle to Cycle Jitter CCJ [10, 13] tjit(h-per) Half-period jitter ...

Page 8

... TSSOP–Tape and Reel CY2SSTV857ZI-27 48-pin TSSOP CY2SSTV857ZI-27T 48-pin TSSOP–Tape and Reel Lead-Free CY2SSTV857ZXC-27 48-pin TSSOP CY2SSTV857ZXC-27T 48-pin TSSOP–Tape and Reel CY2SSTV857ZXI-27 48-pin TSSOP CY2SSTV857ZXI-27T 48-pin TSSOP–Tape and Reel Package Drawing and Dimension 48-lead Thin Shrunk Small Outline Package, Type mm) Z48 While SLI has reviewed all information herein for accuracy and reliability, Spectra Linear Inc ...

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