Datasheet > 逻辑 > 时钟驱动器> ASM2I99456G-32-ET

ASM2I99456G-32-ET

更新时间： 2024-11-23 22:17:31

品牌	Logo	应用领域
ALSC		时钟驱动器逻辑集成电路
页数	文件大小	规格书
14页	553K
描述
3.3V/2.5V LVCMOS Clock Fanout Buffer

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June 2005

rev 0.2

ASM2I99456

3.3V/2.5V LVCMOS Clock Fanout Buffer

Features

specified for the extended temperature range of –40 to

85°C.

Configurable 10 outputs LVCMOS Clock

distribution buffer

Compatible to single, dual and mixed 3.3V/2.5V

Voltage supply

Wide range output clock frequency up to

250MHz

Designed for mid-range to high-performance

telecom, networking and computer applications

Supports high-performance differential clocking

applications

The ASM2I99456 is a full static design supporting clock

frequencies up to 250 MHz. The signals are generated and

retimed on-chip to ensure minimal skew between the three

output banks.

Each of the three output banks can be individually supplied

by 2.5V or 3.3V supporting mixed voltage applications. The

FSELx pins choose between division of the input reference

frequency by one or two. The frequency divider can be set

individually for each of the three output banks. The

ASM2I99456 can be reset and the outputs are disabled by

deasserting the MR/OE pin (logic high state). Asserting

MR/OE will enable the outputs.

Max. output skew of 200pS

(150pS within one bank)

Selectable output configurations per output bank

Tristatable outputs

32 LQFP and TQFP Packages

Ambient Operating temperature range of

-40 to 85°C

All control inputs accept LVCMOS signals while the outputs

provide LVCMOS compatible levels with the capability to

drive terminated 50Ω transmission lines. The clock input is

low voltage PECL compatible for differential clock

distribution support. Please consult the ASM2I99446

specification for a full CMOS compatible device. For series

terminated transmission lines, each of the ASM2I99456

outputs can drive one or two traces giving the devices an

effective fanout of 1:20. The device is packaged in a

7x7 mm²32-lead LQFP and TQFP Packages.

Pin and Function compatible to MPC9456

Functional Description

The ASM2I99456 is a 2.5V and 3.3V compatible 1:10 clock

distribution buffer designed for low-Voltage mid-range to

high-performance telecom, networking and computing

applications. Both 3.3V, 2.5V and dual supply voltages are

supported for mixed-voltage applications. The ASM2I99456

offers 10 low-skew outputs and a differential LVPECL clock

input. The outputs are configurable and support 1:1 and 1:2

output to input frequency ratios. The ASM2I99456 is

Alliance Semiconductor

2575, Augustine Drive • Santa Clara, CA • Tel: 408.855.4900 • Fax: 408.855.4999 • www.alsc.com

Notice: The information in this document is subject to change without notice.

12 3 4 5 6 7...14

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与ASM2I99456G-32-ET相关器件

型号	品牌	获取价格	描述	数据表
ASM2I99456G-32-LR	ALSC	获取价格	3.3V/2.5V LVCMOS Clock Fanout Buffer
ASM2I99456G-32-LR	PULSECORE	获取价格	3.3V/2.5V LVCMOS Clock Fanout Buffer
ASM2I99456G-32-LT	PULSECORE	获取价格	3.3V/2.5V LVCMOS Clock Fanout Buffer
ASM2I99456G-32-LT	ALSC	获取价格	3.3V/2.5V LVCMOS Clock Fanout Buffer
ASM2P20805A	ALSC	获取价格	2.5V CMOS Dual 1-To-5 Clock Driver
ASM2P20805A-20-AR	PULSECORE	获取价格	Low Skew Clock Driver, 20805 Series, 5 True Output(s), 0 Inverted Output(s), CMOS, PDSO20,
ASM2P20805A-20-AR	ALSC	获取价格	2.5V CMOS Dual 1-To-5 Clock Driver
ASM2P20805A-20-AT	ALSC	获取价格	2.5V CMOS Dual 1-To-5 Clock Driver
ASM2P20805A-20-AT	PULSECORE	获取价格	Low Skew Clock Driver, 20805 Series, 5 True Output(s), 0 Inverted Output(s), CMOS, PDSO20,
ASM2P20805A-20-DR	ALSC	获取价格	2.5V CMOS Dual 1-To-5 Clock Driver

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