Datasheet > SY100EL14V_06

SY100EL14V_06

更新时间： 2024-11-20 05:16:11

品牌	Logo	应用领域
麦瑞 - MICREL		时钟
页数	文件大小	规格书
5页	61K
描述
5V/3.3V 1:5 CLOCK DISTRIBUTION

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数据手册

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SY100EL14V_06 数据手册

Precision Edge^®

Micrel, Inc.

SY100EL14V

5V/3.3V 1:5 CLOCK

DISTRIBUTION

Precision Edge

SY100EL14V

FEATURES

■ 3.3V and 5V power supply options

■ Typical 30ps output-to-output skew

■ Max. 50ps output-to-output skew

■ Synchronous enable/disable

Precision Edge

DESCRIPTION

■ Multiplexed clock input

The SY100EL14V is a low skew 1:5 clock distribution

chip designed explicitly for low skew clock distribution

applications. The device can be driven by either a

differential or single-ended ECL or, if positive power

supplies are used, PECL input signal. The EL14V is

suitable for operation in systems operating from 3.3V to

5.0V supplies. If a single-ended input is to be used the

VBB output should be connected to the CLK input and

bypassed to ground via a 0.01µF capacitor. The VBB

output is designed to act as the switching reference for

the input of the EL14V under single-ended input

conditions, as a result this pin can only source/sink up to

0.5mA of current.

■ 75KΩ internal input pull-down resistors

■ Available in 20-pin SOIC package

The EL14V features a multiplexed clock input to allow

for the distribution of a lower speed scan or test clock

along with the high speed system clock. When LOW (or

left open and pulled LOW by the input pull-down resistor)

the SEL pin will select the differential clock input.

The common enable (EN) is synchronous so that the

outputs will only be enabled/disabled when they are

already in the LOW state. This avoids any chance of

generating a runt clock pulse when the device is enabled/

disabled as can happen with an asynchronous control.

The internal flip flop is clocked on the falling edge of the

input clock, therefore all associated specification limits

are referenced to the negative edge of the clock input.

When both differential inputs are left open, CLK input

will pull down to VEE and CLK input will bias around

VCC/2.

Precision Edge is a registered trademark of Micrel, Inc.

Rev.: D

Amendment:/0

M9999-031006

hbwhelp@micrel.com or (408) 955-1690

Issue Date: March 2006

12 3 4 5

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