ICS843021I-01 Datasheet, PDF (2/15 Pages) Integrated Circuit Systems – FEMTOCLOCKS-TM CRYSTAL-TO-3.3V, 2.5V 125MHZ LVPECL CLOCK GENERATOR

ICS843021I-01
FEMTOCLOCKS™CRYSTAL-TO-3.3V, 2.5V LVPECL CLOCK GENERATOR
Table 1. Pin Descriptions
Number
1, 8
2,
3
4
5
7, 8
Name
V_CC
XTAL_OUT
XTAL_IN
V_EE
OE
nQ, Q
Type
Power
Input
Power
Input
Pullup
Output
Description
Power supply pins.
Crystal oscillator interface. XTAL_IN is the input, XTAL_OUT is the output.
Negative supply pin.
Active high output enable. When logic HIGH, the outputs are enabled and
active. When logic LOW, the outputs are disabled and are in a high impedance
state. LVCMOS/LVTTL interface levels.
Differential output pair. LVPECL interface levels.
NOTE: Pullup refers to internal input resistors. See Table 2, Pin Characteristics, for typical values.
Table 2. Pin Characteristics
Symbol
C_IN
R_PULLUP
Parameter
Input Capacitance
Input Pullup Resistor
Test Conditions
Minimum
Typical
4
51
Maximum
Units
pF
kΩ
IDT™ / ICS™ 3.3V , 2.5V LVPECL CLOCK GENERATOR
2
ICS843021AGI-01 REV. A DECEMBER 3, 2007