SY10EL15ZCTR [MICREL]

1:4 CLOCK DISTRIBUTION; 1 ： 4时钟分配


型号：	SY10EL15ZCTR
厂家：	MICREL SEMICONDUCTOR
描述：	1:4 CLOCK DISTRIBUTION 1 ： 4时钟分配时钟
文件：	总4页 (文件大小：65K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Precision Edge™

SY10EL15

1:4 CLOCK

DISTRIBUTION

SY100EL15

FINAL

FEATURES

■ 50ps output-to-output skew

■ Synchronous enable/disable

■ Multiplexed clock input

Precision Edge™

DESCRIPTION

■ 75KΩ internal input pull-down resistors

■ Available in 16-pin SOIC package

The SY10/100EL15 are low skew 1:4 clock distribution

chips 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 VBB output should be connected

to the CLK input and bypassed to VCC via a 0.01µF

capacitor. The VBB 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.

PIN CONFIGURATION/BLOCK DIAGRAM

CLK CLK

13 12

VBB

CC EN SCLK

VEE

SEL

16 15 14

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 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.

SOIC

TOP VIEW

PIN NAMES

TRUTH TABLE

CLK

SCLK

Function

CLK

SCLK

SEL

Differential Clock Inputs

Synchronous Clock Input

Synchronous Enable

Clock Select Input

SEL

VBB

Reference Output

Q0-3

Differential Clock Outputs

* On next negative transition of CLK or SCLK

Precision Edge is a trademark of Micrel, Inc.

Rev.: G

Amendment:/0

Issue Date: February 2003

Precision Edge™

SY10EL15

Micrel

SY100EL15

(1)

ABSOLUTE MAXIMUM RATINGS

Symbol

VEE

Rating

Value

Unit

VDC

Power Supply (VCC = 0V)

Input Voltage (VCC = 0V)

–8.0 to 0

0 to –6.0

IOUT

Output Current

–Continuous

–Surge

100

Operating Temperature Range

Operating Range^(1),(2)

–40 to +85

°C

VEE

–5.7 to –4.2

NOTES:

1. Absolute maximum rating, beyond which, device life may be impaired, unless otherwise specified on an individual data sheet.

2. Parametric values specified at:

100EL15 Series:

10EL15 Series

–4.2V to –5.5V.

–4.75V to –5.5V.

10EL DC ELECTRICAL CHARACTERISTICS

(1)

VEE = VEE (Min.) to VEE (Max.); VCC = GND

TA = –40°C

TA = 0°C

TA = +25°C

TA = +85°C

Symbol

VOH

VOL

VIH

Parameter

Output HIGH Voltage

Output LOW Voltage

Input HIGH Voltage

Input LOW Voltage

Input High Current

Input LOW Current

Power Supply Current

Min.

–1080

–1950

–1230

–1950

—

Max.

–890

–1650

–890

–1500

150

Min.

–1020

Max.

Min.

–980

–1950

–1130

–1950

—

Typ.

Max.

–810

–1630

–810

–1480

150

Min.

Max.

–720

–1595

–720

–1445

150

Unit

µA

–840

—

–910

–1950

–1060

–1950

—

–1950 –1630

–1170 –840

–1950 –1480

VIL

IIH

—

0.5

150

—

IIL

0.5

—

0.5

—

0.5

—

µA

IEE

—

VBB

NOTE:

Output Reference Voltage –1.38

–1.26

–1.38

–1.26

–1.38

–1.26

–1.38

–1.26

1. 10EL circuits are designed to meet the DC specifications shown in the table after thermal equilibrium has been established. The circuit is in a test socket

or mounted on a printed circuit board and transverse airflow greater than 500lfpm is maintained. Outputs are terminated through a 50Ω resistor to –2.0V

except where otherwise specified on the individual data sheets.

PRODUCT ORDERING CODE

Ordering

Code

Package

Type

Operating

Range

Marking

Code

Ordering

Code

Package

Type

Operating

Range

Marking

Code

SY10EL15ZI⁽¹⁾

SY10EL15ZITR*⁽¹⁾

SY100EL15ZI⁽¹⁾

SY100EL15ZITR*⁽¹⁾

*Tape and Reel

Z16-2

Industrial

HEL15

XEL15

SY10EL15ZC

SY10EL15ZCTR*

SY100EL15ZC

SY100EL15ZCTR*

*Tape and Reel

Z16-2

Commercial

HEL15

XEL15

Note 1. Recommended for new designs.

Precision Edge™

SY10EL15

Micrel

SY100EL15

100EL DC ELECTRICAL CHARACTERISTICS

(1)

VEE = VEE (Min.) to VEE (Max.); VCC = GND

TA = –40°C

TA = 0°C

TA = +25°C

TA = +85°C

Symbol

VOH

VOL

Parameter

Min.

Max.

–880

–1555

—

Min.

–1025

Max.

Min.

–1025

–1810

–1035

—

Typ.

Max.

Min.

Max.

–880

–1620

—

Unit

µA

Output HIGH Voltage⁽²⁾

Output LOW Voltage⁽²⁾

Output HIGH Voltage⁽³⁾

Output LOW Voltage⁽³⁾

Input HIGH Voltage

Input LOW Voltage

–1085

–1830

–1095

—

–880

–955

–880

–1025

–1810

–1035

—

–1810 –1620

–1705 –1620

VOHA

VOLA

VIH

–1035

—

–1610

–880

–1475

150

–1555

–880

–1475

150

–1610

–880

–1610

–880

–1475

150

–1165

–1810

—

–1165

–1810

—

–1165

–1810

—

VIL

–1810 –1475

IIH

Input High Current

—

0.5

150

—

IIL

Input LOW Current⁽⁴⁾

Power Supply Current

0.5

—

0.5

—

0.5

—

µA

IEE

—

VBB

Output Reference Voltage –1.38

–1.26

–1.38

–1.26

–1.38

–1.26

–1.38

–1.26

NOTES:

1. This table replaces the three traditionally seen in ECL 100K data books. The same DC parameter values at VEE = –4.5V now apply across the full VEE

range of –4.2V to –5.5V. Outputs are terminated through a 50Ω resistor to –2.0V except where otherwise specified on the individual data sheets.

2. VIN = VIH(Max) or VIL(Min).

3. VIN = VIH(Min) or VIL(Max).

4. VIN = VIL(Max).

AC ELECTRICAL CHARACTERISTICS

VEE = VEE (Min) to VEE (Max); VCC = GND

TA = –40°C

Min. Max.

TA = 0°C

TA = +25°C

TA = +85°C

Min. Max.

Symbol

Parameter

Min.

Max.

Min.

Typ.

Max.

Unit

tPLH

tPHL

Propagation Delay

CLK to Q (Diff)

CLK to Q (SE)

SCLK to Q

460

410

660

710

470

420

670

720

470

420

—

670

720

500

450

470

700

750

tskew

Part-to-Part Skew⁽¹⁾

Within-Device Skew

—

200

—

200

—

200

—

200

Setup Time EN

Hold Time EN

150

400

250

—

150

400

250

—

150

400

250

—

150

400

250

—

VPP

Minimum Input

Swing

CLK

VCMR

Common Mode

Range

–2.0

—

–0.4

—

–2.0

325

–0.4

575

–2.0

325

—

–0.4

575

–2.0

325

–0.4

575

Output Rise/Fall Times Q

(20% – 80%)

NOTE:

1. Skews are specified for identical LOW-to-HIGH or HIGH-to-LOW

transitions.

Precision Edge™

SY10EL15

Micrel

SY100EL15

16 LEAD SOIC .150" WIDE (Z16-2)

Rev. 02

MICREL, INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 USA

TEL + 1 (408) 944-0800 FAX + 1 (408) 944-0970 WEB http://www.micrel.com

The information furnished by Micrel in this datasheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use.

Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.

Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can

reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into

the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s

use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify

Micrel for any damages resulting from such use or sale.

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