MC100LVEP34_06 Datasheet, PDF (1/12 Pages) ON Semiconductor – 2.5V / 3.3V ECL ÷2, ÷4, ÷8 Clock Generation Chip

MC100LVEP34
2.5V / 3.3V ECL ÷2, ÷4, ÷8
Clock Generation Chip
The MC100LVEP34 is a low skew ÷2, ÷4, ÷8 clock generation chip
designed explicitly for low skew clock generation applications. The
internal dividers are synchronous to each other, therefore, the common
output edges are all precisely aligned. The V_BB pin, an internally
generated voltage supply, is available to this device only. For
single−ended input conditions, the unused differential input is
connected to V_BB as a switching reference voltage. V_BB may also
rebias AC coupled inputs. When used, decouple V_BB and V_CC via a
0.01 mF capacitor and limit current sourcing or sinking to 0.5 mA.
When not used, V_BB should be left open.
The common enable (EN) is synchronous so that the internal
dividers will only be enabled/disabled when the internal clock is
already in the LOW state. This avoids any chance of generating a runt
clock pulse on the internal clock when the device is enabled/disabled
as can happen with an asynchronous control. An internal runt pulse
could lead to losing synchronization between the internal divider
stages. The internal enable 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.
Upon start−up, the internal flip−flops will attain a random state; the
master reset (MR) input allows for the synchronization of the internal
dividers, as well as multiple LVEP34s in a system. Single−ended CLK
input operation is limited to a V_CC ≥ 3.0 V in PECL mode, or V_EE ≤
−3.0 V in NECL mode.
Features
• 35 ps Output−to−Output Skew
• Synchronous Enable/Disable
• Master Reset for Synchronization
• The 100 Series Contains Temperature Compensation.
• PECL Mode Operating Range: V_CC = 2.375 V to 3.8 V
with V_EE = 0 V
• NECL Mode Operating Range: V_CC = 0 V
with V_EE = −2.375 V to −3.8 V
• Open Input Default State
• LVDS Input Compatible
• Pb−Free Packages are Available
http://onsemi.com
MARKING
DIAGRAMS*
16
1
SO−16
D SUFFIX
CASE 751B
16
100LVEP34G
AWLYWW
1
16
1
TSSOP−16
DT SUFFIX
CASE 948F
16
100
VP34
ALYWG
G
1
A
= Assembly Location
L, WL = Wafer Lot
Y
= Year
W, WW = Work Week
G or G = Pb−Free Package
(Note: Microdot may be in either location)
*For additional marking information, refer to
Application Note AND8002/D.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 8 of this data sheet.
© Semiconductor Components Industries, LLC, 2006
1
November, 2006 − Rev. 9
Publication Order Number:
MC100LVEP34/D