PI6CV855 datasheet(1/9 Pages) PERICOM

номер детали	PI6CV855

подробное описание детали	PLL Clock Driver for 2.5V SSTL 2 DDR SDRAM Memory

PDF	9 Pages

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производитель	PERICOM [Pericom Semiconductor Corporation]

домашняя страница	http://www.pericom.com

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PS8545 06/20/01

ProductDescription

PI6CV855PLLclockdeviceisdevelopedforSSTL_DDRSDRAM

applications. This PLL Clock Buffer is designed for 2.5 VDDQ and

2.5V AVDD operation and differential data input and output levels.

The device is a zero delay buffer that distributes a differential clock

input pair (CLK, CLK) to five differential pairs of clock outputs

(Y[0:4], Y[0:4]) and one differential pair feedback clock outputs

(FBOUT, FBOUT). The clock outputs are controlled by the input

clocks (CLK, CLK), the feedback clocks (FBIN,FBIN), and the

Analog Power input (AVDD). When the AVDD is strapped low, the

PLL is turned off and bypassed for test purposes.

When the input frequency falls below a suggested detection fre-

quency that is below the operating frequency of the PLL, the device

willenteralowpowermode.Inlowpowermode,PLListurnedOFF,

Y[0:4] and Y[0:4] outputs are 3-stated.

The PI6CV855 is able to track Spread Spectrum Clocking to reduce

EMI.

ProductFeatures

PLLclockdistributionoptimizedforSSTL_2DDRSDRAM

applications.

Distributes one differential clock input pair to five differential

clock output pairs.

Inputs(CLK,CLK)and(FBIN,FBIN): SSTL_2

Outputs (Yx,Yx),(FBOUT,FBOUT): SSTL_2

External feedback pins (FBIN,FBIN) are used to

synchronize the outputs to the clock input.

Operates at AVDD = 2.5V for core circuit and internal PLL,

and VDDQ = 2.5V for differential output drivers

AvailablePackage:

Plastic28-pinTSSOP

BlockDiagram

PI6CV855

PLL Clock Driver for 2.5V

SSTL 2 DDR SDRAM Memory

12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012

Y0

Y1

AVDD

FBIN

CLK

PLL

Y1

Y2

Y3

Y4

Logic

and

Test Ciruit

VDDQ

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

15

16

Y4

FBIN

VDDQ

GND

Y3

GND

FBIN

FBOUT

VDDQ

Y4

GND

Y0

CLK

Y1

GND

VDDQ

A GND

Y2

Y1

GND

AV DD

28-Pin

L

PinConfiguration

Аналогичный номер детали - PI6CV855

производитель	номер детали	датащи	подробное описание детали
Pericom Semiconductor C...	PI6CV857	340Kb / 9P	PLL Clock Driver for 2.5V DDR-SDRAM Memory
	PI6CV857L	340Kb / 9P	PLL Clock Driver for 2.5V DDR-SDRAM Memory
	PI6CV857LA	340Kb / 9P	PLL Clock Driver for 2.5V DDR-SDRAM Memory

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Аналогичное описание - PI6CV855

производитель	номер детали	датащи	подробное описание детали
Pericom Semiconductor C...	PI6CU877	543Kb / 11P	PLL Clock Driver for 1.8V DDR2 Memory
	PI6CV857	340Kb / 9P	PLL Clock Driver for 2.5V DDR-SDRAM Memory
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Integrated Device Techn...	IDT5T2010	157Kb / 23P	2.5V ZERO DELAY PLL CLOCK DRIVER TERACLOCK
Freescale Semiconductor...	MPC5200B	1Mb / 78P	SDRAM/DDR Memory Controller
Exar Corporation	XRK39351_0611	293Kb / 12P	3.3V OR 2.5V, 9-OUTPUT PLL CLOCK DRIVER
Freescale Semiconductor...	MPC5200B	977Kb / 72P	SDRAM / DDR Memory Controller
Freescale Semiconductor...	MPC5200B	984Kb / 72P	SDRAM/DDR Memory Controller
Integrated Device Techn...	IDT5T2010	207Kb / 24P	2.5V ZERO DELAY PLL CLOCK DRIVER TERACLOCK?
Renesas Technology Corp	IDT5T9820	458Kb / 37P	EEPROM PROGRAMMABLE 2.5V ZERO DELAY PLL CLOCK DRIVER NOVEMBER 2004

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