Datasheet > 逻辑 > 时钟驱动器> ASM2I99446-32-LT

ASM2I99446-32-LT

更新时间： 2024-11-23 22:50:15

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	573K
描述
2.5V and 3.3V LVCMOS Clock Distribution Buffer

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数据手册

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ASM2I99446-32-LT 数据手册

July 2005

rev 0.4

ASM2I99446

2.5V and 3.3V LVCMOS Clock Distribution Buffer

Features

is specified for the extended temperature range of -40°C 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 applications requiring clock redundancy

Max. output skew of 200pS (150pS within one

bank)

Selectable output configurations per output bank

Tristatable outputs

32 lead LQFP & TQFP Packages

Ambient operating temperature range of

-40 to 85°C

The ASM2I99446 is a full static fanout buffer design

supporting clock frequencies up to 250MHz. The signals

are generated and retimed on-chip to ensure minimal skew

between the three output banks. Two independent

LVCMOS compatible clock inputs are available. This

feature supports redundant clock sources or the addition of

a test clock into the system design. 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 ASM2I99446 can

be reset and the outputs are disabled by deasserting the

MR/OE pin (logic high state). Asserting MR/OE will enable

the outputs.

Functional Description

All inputs accept LVCMOS signals while the outputs

provide LVCMOS compatible levels with the capability to

drive terminated 50Ω transmission lines. Please consult the

ASM2I99456 specification for a 1:10 mixed voltage buffer

with LVPECL compatible inputs. For series terminated

transmission lines, each of the ASM2I99446 outputs can

drive one or two traces giving the devices an effective

fanout of 1:20. The device is packaged in a 7x7mm²

32-lead LQFP and TQFP Packages.

The ASM2I99446 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 ASM2I99446

offers 10 low-skew outputs and 2 selectable inputs for clock

redundancy. The outputs are configurable and support 1:1

and 1:2 output to input frequency ratios. The ASM2I99446

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ASM2I99446-32-LT相关器件

型号	品牌	获取价格	描述	数据表
ASM2I99446G-32-ER	ALSC	获取价格	2.5V and 3.3V LVCMOS Clock Distribution Buffer
ASM2I99446G-32-ET	ALSC	获取价格	2.5V and 3.3V LVCMOS Clock Distribution Buffer
ASM2I99446G-32-ET	PULSECORE	获取价格	Low Skew Clock Driver, 99446 Series, 10 True Output(s), 0 Inverted Output(s), PQFP32, 7 X
ASM2I99446G-32-LR	ALSC	获取价格	2.5V and 3.3V LVCMOS Clock Distribution Buffer
ASM2I99446G-32-LR	PULSECORE	获取价格	Low Skew Clock Driver, 99446 Series, 10 True Output(s), 0 Inverted Output(s), PQFP32, 7 X
ASM2I99446G-32-LT	ALSC	获取价格	2.5V and 3.3V LVCMOS Clock Distribution Buffer
ASM2I99446G-32-LT	PULSECORE	获取价格	Low Skew Clock Driver, 99446 Series, 10 True Output(s), 0 Inverted Output(s), PQFP32, 7 X
ASM2I99447	ALSC	获取价格	3.3V/2.5V 1:9 LVCMOS Clock Fanout Buffer
ASM2I99448	ALSC	获取价格	3.3V/2.5V LVCMOS 1:12 Clock Fanout Buffer
ASM2I99448-32-ER	ALSC	获取价格	3.3V/2.5V LVCMOS 1:12 Clock Fanout Buffer

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