SY10EL15ZC - MICROCHIP TECHNOLOGY

Precision Edge®

SY10EL15

SY100EL15

Micrel, Inc.

M9999-031006

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

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.

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.

FEATURES

DESCRIPTION

Precision Edge®

SY10EL15

SY100EL15

■50ps output-to-output skew

■Synchronous enable/disable

■Multiplexed clock input

■75KΩ internal input pull-down resistors

■Available in 16-pin SOIC package

1:4 CLOCK

DISTRIBUTION

1Rev.: H Amendment: /0

Issue Date:

March 2006

Precision Edge is a registered trademark of Micrel, Inc.

Precision Edge®

SY10EL15

SY100EL15

Micrel, Inc.

M9999-031006

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

PACKAGE/ORDERING INFORMATION

Ordering Information(1)

Package Operating Package Lead

Part Number Type Range Marking Finish

SY10EL15ZC Z16-2 Commercial SY10EL15ZC Sn-Pb

SY10EL15ZCTR(2) Z16-2 Commercial SY10EL15ZC Sn-Pb

SY100EL15ZC Z16-2 Commercial SY100EL15ZC Sn-Pb

SY100EL15ZCTR(2) Z16-2 Commercial SY100EL15ZC Sn-Pb

SY10EL15ZI Z16-2 Industrial SY10EL15ZI Sn-Pb

SY10EL15ZITR(2) Z16-2 Industrial SY10EL15ZI Sn-Pb

SY100EL15ZI Z16-2 Industrial SY100EL15ZI Sn-Pb

SY100EL15ZITR(2) Z16-2 Industrial SY100EL15ZI Sn-Pb

SY10EL15ZG(3) Z16-2 Industrial SY10EL15ZG with Pb-Free

Pb-Free bar-line indicator NiPdAu

SY10EL15ZGTR(2, 3) Z16-2 Industrial SY10EL15ZG with Pb-Free

Pb-Free bar-line indicator NiPdAu

SY100EL15ZG(3) Z16-2 Industrial SY100EL15ZG with Pb-Free

Pb-Free bar-line indicator NiPdAu

SY100EL15ZGTR(2, 3) Z16-2 Industrial SY100EL15ZG with Pb-Free

Pb-Free bar-line indicator NiPdAu

Notes:

1. Contact factory for die availability. Dice are guaranteed at TA = 25°C, DC Electricals only.

2. Tape and Reel.

3. Pb-Free package is recommended for new designs.

16-Pin Narrow SOIC (Z8-1)

CLK

Q0Q0Q1Q2Q2Q3

VEE

SEL

VBBCLK

16 15 14 13 12 11 10 9

12345678

1 0

SCLK

Pin Function

CLK Differential Clock Inputs

SCLK Synchronous Clock Input

EN Synchronous Enable

SEL Clock Select Input

VBB Reference Output

Q0-3 Differential Clock Outputs

TRUTH TABLEPIN NAMES

CLK SCLK SEL EN Q

L XLLL

HXLLH

XLHLL

XHHLH

XXXHL*

* On next negative transition of CLK or SCLK

Precision Edge®

SY10EL15

SY100EL15

Micrel, Inc.

M9999-031006

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

Symbol Rating Value Unit

VEE Power Supply (VCC = 0V) –8.0 to 0 VDC

VIInput Voltage (VCC = 0V) 0 to –6.0 VDC

IOUT Output Current

–Continuous 50 mA

–Surge 100

TLEAD Lead Temperature Range (soldering, 20sec.) +260 °C

TAOperating Temperature Range –40 to +85 °C

VEE Operating Range(1),(2) –5.7 to –4.2 V

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: –4.2V to –5.5V.

10EL15 Series –4.75V to –5.5V.

ABSOLUTE MAXIMUM RATINGS(1)

NOTE:

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.

TA = –40°CTA = 0°CTA = +25°CTA = +85°C

Symbol Parameter Min. Max. Min. Max. Min. Typ. Max. Min. Max. Unit

VOH Output HIGH Voltage –1080 –890 –1020 –840 –980 — –810 –910 –720 mV

VOL Output LOW Voltage –1950 –1650 –1950 –1630 –1950 — –1630 –1950 –1595 mV

VIH Input HIGH Voltage –1230 –890 –1170 –840 –1130 — –810 –1060 –720 mV

VIL Input LOW Voltage –1950 –1500 –1950 –1480 –1950 — –1480 –1950 –1445 mV

IIH Input High Current — 150 — 150 — — 150 — 150 µA

IIL Input LOW Current 0.5 — 0.5 — 0.5 — — 0.5 — µA

IEE Power Supply Current — 35 — 35 — 25 35 — 38 mA

VBB Output Reference Voltage –1.38 –1.26 –1.38 –1.26 –1.38 — –1.26 –1.38 –1.26 V

10EL DC ELECTRICAL CHARACTERISTICS

VEE = VEE (Min.) to VEE (Max.); VCC = GND(1)

Precision Edge®

SY10EL15

SY100EL15

Micrel, Inc.

M9999-031006

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

TA = –40°CTA = 0°CTA = +25°CTA = +85°C

Symbol Parameter Min. Max. Min. Max. Min. Typ. Max. Min. Max. Unit

VOH Output HIGH Voltage(2) –1085 –880 –1025 –880 –1025 –955 –880 –1025 –880 mV

VOL Output LOW Voltage(2) –1830 –1555 –1810 –1620 –1810 –1705 –1620 –1810 –1620 mV

VOHA Output HIGH Voltage(3) –1095 — –1035 — –1035 — — –1035 — mV

VOLA Output LOW Voltage(3) — –1555 — –1610 — — –1610 — –1610 mV

VIH Input HIGH Voltage –1165 –880 –1165 –880 –1165 — –880 –1165 –880 mV

VIL Input LOW Voltage –1810 –1475 –1810 –1475 –1810 — –1475 –1810 –1475 mV

IIH Input High Current — 150 — 150 — — 150 — 150 µA

IIL Input LOW Current(4) 0.5 — 0.5 — 0.5 — — 0.5 — µA

IEE Power Supply Current — 35 — 35 — 25 35 — 38 mA

VBB Output Reference Voltage –1.38 –1.26 –1.38 –1.26 –1.38 — –1.26 –1.38 –1.26 V

100EL DC ELECTRICAL CHARACTERISTICS

VEE = VEE (Min.) to VEE (Max.); VCC = GND(1)

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).

TA = –40°CTA = 0°CTA = +25°CTA = +85°C

Symbol Parameter Min. Max. Min. Max. Min. Typ. Max. Min. Max. Unit

tPD Propagation Delay ps

CLK to Q (Diff) 460 660 470 670 470 — 670 500 700

CLK to Q (SE) 410 710 420 720 420 — 720 450 750

SCLK to Q 410 710 420 720 420 — 720 470 750

tskew Part-to-Part Skew(1) — 200 — 200 — — 200 — 200 ps

Within-Device Skew — 50 — 50 — — 50 — 50

tSSetup Time EN 150 — 150 — 150 — — 150 — ps

tHHold Time EN 400 — 400 — 400 — — 400 — ps

VPP Minimum Input CLK 250 — 250 — 250 — — 250 — mV

Swing

VCMR Common Mode CLK –2.0 –0.4 –2.0 –0.4 –2.0 — –0.4 –2.0 –0.4 V

Range

trOutput Rise/Fall TimesQ — — 325 575 325 — 575 325 575 ps

tf(20% – 80%)

AC ELECTRICAL CHARACTERISTICS

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

NOTE:

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

transitions.

Precision Edge®

SY10EL15

SY100EL15

Micrel, Inc.

M9999-031006

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

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

Rev. 02

MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA

TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 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.