SY100EL15L [MICREL]

3.3V 1:4 CLOCK DISTRIBUTION; 3.3V 1 ： 4时钟分配


型号：	SY100EL15L
厂家：	MICREL SEMICONDUCTOR
描述：	3.3V 1:4 CLOCK DISTRIBUTION 3.3V 1 ： 4时钟分配时钟
文件：	总4页 (文件大小：57K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

ClockWorks™

Micrel

SY100EL15L

3.3V 1:4 CLOCK

DISTRIBUTION

ClockWorks™

SY100EL15L

Synergy™ High-Speed Products

FEATURES

DESCRIPTION

The SY100EL15L is a low skew 1:4 clock distribution

IC 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 ground 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.

■ 3.3V power supply

■ 50ps output-to-output skew

■ Low power

■ Synchronous enable/disable

■ Multiplexed clock input

■ 75KΩ internal input pull-down resistors

■ ESD protection of 2000V

■ Available in 16-pin SOIC package

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.

When both differential inputs are left open, CLK input

will pull down to VEE and CLK input will bias around

VCC/2.

PIN CONFIGURATION/BLOCK DIAGRAM

CLK CLK

13 12

VBB

CC EN SCLK

VEE

SEL

16 15 14

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

Rev.: A

Amendment:/0

Issue Date: December 1999

ClockWorks™

Micrel

SY100EL15L

(1)

ABSOLUTE MAXIMUM RATINGS

Symbol

VEE

Rating

Value

Unit

VDC

Power Supply (VCC = 0V)

Input Voltage (VCC = 0V)

Output Current

–8.0 to 0

0 to –6.0

IOUT

–Continuous

–Surge

100

Operating Temperature Range

–40 to +85

°C

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:

3 volt Power Supply Range 100EL15L Series

–3.0V to –3.8V.

DC ELECTRICAL CHARACTERISTICS

(1)

VEE = 3.3V ±10%; VCC = GND

TA = –40°C

TA = 0°C

TA = +25°C

TA = +85°C

Min. Max.

–1025 –880

–1810 –1620

Symbol

VOH

VOL

VOHA

VOLA

VIH

Parameter

Min.

Max.

Min.

–1025

Max.

–880

–1620

—

Min.

–1025

Typ.

Max.

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

–880

–955

–880

–1830 –1555 –1810

–1810 –1705 –1620

–1095

—

–1035

—

–1035

—

–1035

—

–1555

–880

–1610

–880

–1475

150

–1610

–880

–1475

150

–1610

–880

–1165

–1810

—

–1165

VIL

–1810 –1475 –1810

–1810 –1475

IIH

Input High Current

—

150

—

150

IIL

Input LOW Current⁽⁴⁾

0.5

–300

—

0.5

–300

—

0.5

–300

—

0.5

–300

—

µA

CLK

—

IEE

Power Supply Current

—

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. Outputs are terminated through a 50Ω resistor to –2.0V.

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

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

4. VIN = VIL(Max).

ClockWorks™

Micrel

SY100EL15L

AC ELECTRICAL CHARACTERISTICS

(1)

VEE = 3.3V ±10%; 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

—

150

400

—

150

400

—

150

400

—

VPP

Minimum Input Swing

CLK

250

—

250

—

250

—

250

—

VCMR

Common Mode Range⁽²⁾

VPP < 500mV

–2.0

–1.8

–0.4

–2.1

–1.9

–0.4

–2.1

–1.9

—

–0.4

–2.1

–1.9

–0.4

VPP ≥ 500mV

Output Rise/Fall TimesQ

(20% – 80%)

375

625

325

575

325

—

575

325

575

NOTES:

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

2. VCMR is referenced to the most positive side of the differential input signal. Normal operation is obtained when the input signals are within the VCMR range

and the input swing is greater than VPP(Min.) and <1V. The lower end of the VCMR range varies 1:1 with VEE. The numbers in the spec table assume a

nominal VEE = –3.3V. Note for PECL operation, the VCMR(Min) will be fixed at 3.3V – |VCMR(Min)|.

PRODUCT ORDERING CODE

Ordering

Code

Package

Type

Operating

Range

SY100EL15LZC

Z16-2

Commercial

SY100EL15LZCTR

ClockWorks™

Micrel

SY100EL15L

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

MICREL-SYNERGY 3250 SCOTT BOULEVARD SANTA CLARA CA 95054 USA

TEL + 1 (408) 980-9191 FAX + 1 (408) 914-7878 WEB http://www.synergysemi.com http://www.micrel.com

This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or

other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc.

SY100EL15L [MICREL]

相关型号：

SY100EL15LZC

SY100EL15LZCTR

SY100EL15LZG

SY100EL15LZG

SY100EL15LZG-TR

SY100EL15LZGTR

SY100EL15LZI

SY100EL15LZI

SY100EL15LZITR

SY100EL15L_06

SY100EL15ZC

SY100EL15ZCTR