Datasheet > MC100EL15

MC100EL15

更新时间： 2024-11-19 22:46:23

品牌	Logo	应用领域
安森美 - ONSEMI		时钟
页数	文件大小	规格书
4页	92K
描述
1:4 Clock Distribution Chip

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MC100EL15 数据手册

SEMICONDUCTOR TECHNICAL DATA

The MC10EL/100EL15 is a low skew 1:4 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. If a single-ended

input is to be used the V

output should be connected to the CLK input

and bypassed to ground via a 0.01µF capacitor. The V output is

designed to act as the switching reference for the input of the EL15 under

single-ended input conditions, as a result this pin can only source/sink up

to 0.5mA of current.

The EL15 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 pulldown

resistor) the SEL pin will select the differential clock input.

D SUFFIX

PLASTIC SOIC PACKAGE

CASE 751B-05

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.

• 50ps Output-to-Output Skew

• Synchronous Enable/Disable

• Multiplexed Clock Input

PIN DESCRIPTION

• 75kΩ Internal Input Pulldown Resistors

• >1000V ESD Protection

FUNCTION

CLK

SCLK

Diff Clock Inputs

Scan Clock Input

Sync Enable

Clock Select Input

Reference Output

Diff Clock Outputs

LOGIC DIAGRAM AND PINOUT ASSIGNMENT

SEL

0–3

EN SCLK CLK CLK

SEL

FUNCTION TABLE

CLK

SCLK

SEL

* On next negative transition of

CLK or SCLK

5/95

Motorola, Inc. 1996

REV 2

3–1

12 3 4

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与MC100EL15相关器件

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