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 VBB output should be connected to the CLK
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.
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.
The common enable (EN
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.
) is synchronous so that the outputs will only
• 50ps Output-to-Output Skew
• Synchronous Enable/Disable
• Multiplexed Clock Input
• 75kΩ Internal Input Pulldown Resistors
• >1000V ESD Protection
LOGIC DIAGRAM AND PINOUT ASSIGNMENT
input
16
1
D SUFFIX
PLASTIC SOIC PACKAGE
CASE 751B-05
PIN DESCRIPTION
PINFUNCTION
CLKDiff Clock Inputs
SCLKScan Clock Input
EN
SELClock Select Input
V
BB
Q
0–3
Sync Enable
Reference Output
Diff Clock Outputs
V
5/95
Motorola, Inc. 1996
SCLK CLKCLKVBBSELV
EN
CC
15161413121110
1 0
D
Q
2134567
Q0Q1Q2Q3
3–1
EE
9
8
Q3Q2Q1Q0
FUNCTION TABLE
CLK
* On next negative transition of
CLK or SCLK
REV 2
SCLK
L
H
X
X
X
X
X
L
H
X
SEL
L
L
H
H
X
EN
L
L
L
L
H
Q
L
H
L
H
L*
MC10EL15 MC100EL15
ABSOLUTE MAXIMUM RATINGS
Symbol
V
EE
V
I
I
out
T
A
V
EE
1. Absolute maximum rating, beyond which, device life may be impaired, unless otherwise specified on an individual data sheet.
2. Parametric values specified at:100EL Series: –4.20V to –5.50V
Power Supply (VCC = 0V)–8.0 to 0VDC
Input Voltage (VCC = 0V)0 to –6.0VDC
Output CurrentContinuous
Operating Temperature Range–40 to +85°C
Operating Range
1
CharacteristicRatingUnit
Surge
1,2
10EL Series:–4.94V to –5.50V
50
100
–5.7 to –4.2V
mA
10EL SERIES
DC CHARACTERISTICS (VEE = VEE(min) – VEE(max); VCC = GND1)
–40°C0°C25°C85°C
SymbolCharacteristicMinMaxMinMaxMinMaxMinMaxUnit
V
OH
V
OL
V
IH
V
IL
I
IL
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.
Output HIGH Voltage–1080–890–1020–840–980–810–910–720mV
Output LOW Voltage–1950–1650–1950–1630–1950–1630–1950–1595mV
Input HIGH Voltage–1230–890–1170–840–1130–810–1060–720mV
Input LOW Voltge–1950–1500–1950–1480–1950–1480–1950–1445mV
Input LOW Current0.5—0.5—0.5—0.3—µA
100EL SERIES
DC CHARACTERISTICS (VEE = VEE(min) – VEE(max); VCC = GND1)
1. This table replaces the three tables 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.
Output HIGH Voltage–1085–1005–880–1025–955–880mVVIN = VIH(max)
Output LOW Voltage–1830–1695–1555–1810–1705–1620mVor VIL(min)
Output HIGH Voltage–1095——–1035——mVVIN = VIH(max)
Output LOW Voltage——–1555——–1610mVor VIL(min)
Input HIGH Voltage–1165—–880–1165—–880mV
Input LOW Voltge–1810—–1475–1810—–1475mV
Input LOW Current0.5——0.5——µAVIN = VIL(max)
MOTOROLAECLinPS and ECLinPS Lite
3–2
DL140 — Rev 3
MC10EL15 MC100EL15
AC/DC CHARACTERISTICS (VEE = VEE(min) to VEE(max); VCC = GND)
1. Skews are specified for identical LOW-to-HIGH or HIGH-to-LOW transitions.
2. Minimum input swing for which AC parameters guaranteed. The device has a DC gain of ≈40.
3. The CMR range is referenced to the most positive side of the differential input signal. Normal operation is obtained if the HIGH level falls within
the specified range and the peak-to-peak voltage lies between VPPmin and 1V . The lower end of the CMR range is dependent on VEE and is
equal to VEE + 2.5V.
Power Supply Current
10EL
100EL
Output Reference 10EL
Voltage100EL
–1.43
–1.38
252535
35
–1.30
–1.26
–1.38
–1.38
252535
35
–1.27
–1.26
–1.35
–1.38
252535
35
–1.25
–1.26
–1.31
–1.38
252535
38
–1.19
–1.26
mA
Input High Current150150150150µΑ
Propagation Delay
CLK to Q (Diff)
CLK to Q (SE)
SCLK to Q
Part-to-Part Skew
Within-Device Skew
460
410
410
1
660
710
710
200
50
470
420
420
610
720
720
200
50
470
420
420
610
720
720
200
50
500
450
470
ps
700
750
750
20050ps
Setup Time EN150150150150ps
HoldTime EN400400400400ps
Minimum Input Swing CLK
Common Mode Range
3
CLK
Output Rise/Fall Times Q
2
250250250250mV
–2.0–0.4–2.0–0.4–2.0–0.4–2.0–0.4V
325575325575325575ps
(20% – 80%)
V
DL140 — Rev 3
3–3MOTOROLAECLinPS and ECLinPS Lite
MC10EL15 MC100EL15
–A–
169
18
G
–T–
SEATING
PLANE
D
16 PL
0.25 (0.010)A
OUTLINE DIMENSIONS
D SUFFIX
PLASTIC SOIC PACKAGE
CASE 751B-05
ISSUE J
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
–B–
K
8 PLP
0.25 (0.010)B
M
S
R
X 45
_
F
C
M
M
S
B
T
S
J
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty , representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages. “T ypical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
Opportunity/Affirmative Action Employer.
How to reach us:
USA/EUROPE/Locations Not Listed: Motorola Literature Distribution;JAPAN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, 6F Seibu–Butsuryu–Center,
P.O. Box 20912; Phoenix, Arizona 85036. 1–800–441–2447 or 602–303–54543–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 03–81–3521–8315
MFAX: RMF AX0@email.sps.mot.com – T OUCHTONE 602–244–6609ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park,
INTERNET: http://Design–NET .com51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298
MOTOROLAECLinPS and ECLinPS Lite
3–4
*MC10EL15/D*
◊
MC10EL15/D
DL140 — Rev 3
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