Motorola MC10EL15D, MC100EL15D Datasheet
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 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
PIN FUNCTION
CLK Diff Clock Inputs
SCLK Scan Clock Input
EN
SEL Clock Select Input
V
BB
Q
0–3
Sync Enable
Reference Output
Diff Clock Outputs
V
5/95
Motorola, Inc. 1996
SCLK CLK CLK VBBSEL V
EN
CC
1516 14 13 12 11 10
1 0
D
Q
21 34567
Q0 Q1 Q2 Q3
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 0 VDC
Input Voltage (VCC = 0V) 0 to –6.0 VDC
Output Current Continuous
Operating Temperature Range –40 to +85 °C
Operating Range
1
Characteristic Rating Unit
Surge
1,2
10EL Series: –4.94V to –5.50V
50
100
–5.7 to –4.2 V
mA
10EL SERIES
DC CHARACTERISTICS (VEE = VEE(min) – VEE(max); VCC = GND1)
–40°C 0°C 25°C 85°C
Symbol Characteristic Min Max Min Max Min Max Min Max Unit
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 –720 mV
Output LOW Voltage –1950 –1650 –1950 –1630 –1950 –1630 –1950 –1595 mV
Input HIGH Voltage –1230 –890 –1170 –840 –1130 –810 –1060 –720 mV
Input LOW Voltge –1950 –1500 –1950 –1480 –1950 –1480 –1950 –1445 mV
Input LOW Current 0.5 — 0.5 — 0.5 — 0.3 — µA
100EL SERIES
DC CHARACTERISTICS (VEE = VEE(min) – VEE(max); VCC = GND1)
–40°C 0°C to 85°C
Symbol Characteristic Min Typ Max Min Typ Max Unit Condition
V
OH
V
OL
V
OHA
V
OLA
V
IH
V
IL
I
IL
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 –880 mV VIN = VIH(max)
Output LOW Voltage –1830 –1695 –1555 –1810 –1705 –1620 mV or VIL(min)
Output HIGH Voltage –1095 — — –1035 — — mV VIN = VIH(max)
Output LOW Voltage — — –1555 — — –1610 mV or VIL(min)
Input HIGH Voltage –1165 — –880 –1165 — –880 mV
Input LOW Voltge –1810 — –1475 –1810 — –1475 mV
Input LOW Current 0.5 — — 0.5 — — µA VIN = VIL(max)
MOTOROLA ECLinPS and ECLinPS Lite
3–2
DL140 — Rev 3
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