Datasheet > CY2308-2

CY2308-2

更新时间： 2024-11-20 04:37:59

品牌	Logo	应用领域
赛普拉斯 - CYPRESS		/
页数	文件大小	规格书
15页	367K
描述
3.3V Zero Delay Buffer

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CY2308-2 数据手册

CY2308

3.3V Zero Delay Buffer

Input Decoding” on page 2”. If all output clocks are not

required, Bank B is three-stated. The input clock is directly

applied to the output for chip and system testing purposes by

the select inputs.

Features

■ Zero input-output propagation delay, adjustable by

capacitive load on FBK input

The CY2308 PLL enters a power down state when there are

no rising edges on the REF input. In this mode, all outputs are

three-stated and the PLL is turned off resulting in less than

50 μA of current draw. The PLL shuts down in two additional

cases as shown in the table “Select Input Decoding” on

page 2.

■ Multiple configurations, see “Available CY2308 Configura-

tions” on page 3

■ Multiple low skew outputs

■ Two banks of four outputs, three-stateable by two select

inputs

Multiple CY2308 devices accept the same input clock and

distribute it in a system. In this case, the skew between the

outputs of two devices is less than 700 ps.

■ 10 MHz to 133 MHz operating range

■ 75 ps typical cycle-to-cycle jitter (15 pF, 66 MHz)

■ Spacesaving16-pin 150milSOICpackageor16-pinTSSOP

■ 3.3V operation

The CY2308 is available in five different configurations as

shown in the table “Available CY2308 Configurations” on

page 3. The CY2308–1 is the base part where the output

frequencies equal the reference if there is no counter in the

feedback path. The CY2308–1H is the high drive version of the

–1 and rise and fall times on this device are much faster.

■ Industrial Temperature available

Functional Description

The CY2308–2 enables the user to obtain 2X and 1X

frequencies on each output bank. The exact configuration and

output frequencies depend on the output that drives the

feedback pin. The CY2308–3 enables the user to obtain 4X

and 2X frequencies on the outputs.

The CY2308 is a 3.3V Zero Delay Buffer designed to distribute

high speed clocks in PC, workstation, datacom, telecom, and

other high performance applications.

The part has an on-chip PLL that locks to an input clock

presented on the REF pin. The PLL feedback is driven into the

FBK pin and obtained from one of the outputs. The

input-to-output skew is less than 350 ps and output-to-output

skew is less than 200 ps.

The CY2308–4 enables the user to obtain 2X clocks on all

outputs. Thus, the part is extremely versatile and is used in a

variety of applications.

The CY2308–5H is a high drive version with REF/2 on both

banks.

The CY2308 has two banks of four outputs each that is

controlled by the Select inputs as shown in the table “Select

Logic Block Diagram

FBK

PLL

REF

MUX

CLKA1

CLKA2

CLKA3

CLKA4

Extra Divider (–3, –4)

Extra Divider (–5H)

Select Input

Decoding

CLKB1

CLKB2

CLKB3

CLKB4

Extra Divider (–2, –3)

Cypress Semiconductor Corporation

Document Number: 38-07146 Rev. *E

•

198 Champion Court

•

San Jose, CA 95134-1709

•

408-943-2600

Revised August 03, 2007

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与CY2308-2相关器件

型号	品牌	获取价格	描述	数据表
CY2308-3	CYPRESS	获取价格	3.3V Zero Delay Buffer
CY2308-4	CYPRESS	获取价格	3.3V Zero Delay Buffer
CY2308-5H	CYPRESS	获取价格	3.3V Zero Delay Buffer
CY2308AZC-1	CYPRESS	获取价格	PLL Based Clock Driver, 2308 Series, 8 True Output(s), 0 Inverted Output(s), CMOS, PDSO16,
CY2308AZC-1H	CYPRESS	获取价格	PLL Based Clock Driver, 2308 Series, 8 True Output(s), 0 Inverted Output(s), CMOS, PDSO16,
CY2308AZC-1T	CYPRESS	获取价格	PLL Based Clock Driver, 2308 Series, 8 True Output(s), 0 Inverted Output(s), CMOS, PDSO16,
CY2308AZI-1H	CYPRESS	获取价格	PLL Based Clock Driver, 2308 Series, 8 True Output(s), 0 Inverted Output(s), CMOS, PDSO16,
CY2308AZI-1HT	CYPRESS	获取价格	PLL Based Clock Driver, 2308 Series, 8 True Output(s), 0 Inverted Output(s), CMOS, PDSO16,
CY2308AZI-2	CYPRESS	获取价格	PLL Based Clock Driver, 2308 Series, 8 True Output(s), 0 Inverted Output(s), CMOS, PDSO16,
CY2308AZI-2T	CYPRESS	获取价格	PLL Based Clock Driver, 2308 Series, 8 True Output(s), 0 Inverted Output(s), CMOS, PDSO16,

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