ICS843023I Datasheet, PDF (2/13 Pages) Integrated Circuit Systems – FEMTOCLOCKS-TM CRYSTAL-TO-3.3V, 2.5V LVPECL CLOCK GENERATOR

Integrated
Circuit
Systems, Inc.
ICS843023I
FEMTOCLOCKS™ CRYSTAL-TO-3.3V, 2.5V
LVPECL CLOCK GENERATOR
TABLE 1. PIN DESCRIPTIONS
Number
Name
Type
Description
1, 6
V_CC
Power
2, 3
XTAL_OUT,
XTAL_IN
Input
Core supply pin.
Crystal oscillator interface. XTAL_IN is the input, XTAL_OUT is the output.
4
V_EE
Power
Negative supply pin.
Active high output enable. When logic HIGH, the outputs are enabled and
5
OE
Input Pullup active. When logic LOW, the outputs are disabled and the device is in
power down mode. LVCMOS/LVTTL interface levels.
7, 8
nQ, Q
Output
Differential clock outputs. LVPECL interface levels.
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
843023AGI
www.icst.com/products/hiperclocks.html
2
REV. A JUNE 29, 2005