Datasheet > CY29940-1

CY29940-1

更新时间： 2024-09-24 04:13:19

品牌	Logo	应用领域
赛普拉斯 - CYPRESS		时钟
页数	文件大小	规格书
7页	196K
描述
2.5V or 3.3V, 200-MHz 1:18 Clock Distribution Buffer

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

CY29940-1 数据手册

CY29940-1

2.5V or 3.3V, 200-MHz

1:18 Clock Distribution Buffer

Description

Features

• 200-MHz clock support

The CY29940-1 is a low-voltage 200-MHz clock distribution

buffer with the capability to select either a differential LVPECL-

or a LVCMOS/LVTTL-compatible input clock. The two clock

sources can be used to provide for a test clock as well as the

primary system clock. All other control inputs are

LVCMOS/LVTTL-compatible. The eighteen outputs are 2.5V

or 3.3V LVCMOS/LVTTL-compatible and can drive 50Ω series

or parallel terminated transmission lines. For series terminated

transmission lines, each output can drive one or two traces

giving the device an effective fanout of 1:36. Low

output-to-output skews make the CY29940-1 an ideal clock

distribution buffer for nested clock trees in the most

demanding of synchronous systems.

• LVPECL or LVCMOS/LVTTL clock input

• LVCMOS/LVTTL-compatible inputs

• 18 clock outputs: drive up to 36 clock lines

• 150 ps max. output-to-output skew

• 23Ω output impedance

• Dual or single supply operation:

— 3.3V core and 3.3V outputs

— 3.3V core and 2.5V outputs

— 2.5V core and 2.5V outputs

• Pin-compatible with MPC940L, MPC9109

• Available in commercial and industrial temperature

ranges

• 32-pin TQFP package

Block Diagram

Pin Configuration

VDD

VDDC

32 31

27 26

VSS

PECL_CLK

PECL_CLK#

TCLK

Q0-Q17

TCLK_SEL

PECL_CLK

VDD

TCLK

CY29940-1

TCLK_SEL

PECL_CLK#

VDD

Q10

Q11

VSS

VDDC

14 15

Cypress Semiconductor Corporation

Document #: 38-07487 Rev. **

•

3901 North First Street

•

San Jose, CA 95134

•

408-943-2600

Revised January 28, 2003

12 3 4 5 6 7

中文翻译

下载PDF

与CY29940-1相关器件

型号	品牌	获取价格	描述	数据表
CY29940AC	CYPRESS	获取价格	2.5V or 3.3V, 200-MHz, 1:18 Clock Distribution Buffer
CY29940AC-1	CYPRESS	获取价格	2.5V or 3.3V, 200-MHz 1:18 Clock Distribution Buffer
CY29940AC-1T	CYPRESS	获取价格	2.5V or 3.3V, 200-MHz 1:18 Clock Distribution Buffer
CY29940ACT	CYPRESS	获取价格	2.5V or 3.3V, 200-MHz, 1:18 Clock Distribution Buffer
CY29940AI	CYPRESS	获取价格	2.5V or 3.3V, 200-MHz, 1:18 Clock Distribution Buffer
CY29940AI-1	CYPRESS	获取价格	2.5V or 3.3V, 200-MHz 1:18 Clock Distribution Buffer
CY29940AI-1T	CYPRESS	获取价格	2.5V or 3.3V, 200-MHz 1:18 Clock Distribution Buffer
CY29940AIT	CYPRESS	获取价格	2.5V or 3.3V, 200-MHz, 1:18 Clock Distribution Buffer
CY29940AXC	CYPRESS	获取价格	2.5V or 3.3V, 200-MHz, 1:18 Clock Distribution Buffer
CY29940AXCT	CYPRESS	获取价格	2.5V or 3.3V, 200-MHz, 1:18 Clock Distribution Buffer