ICS843051 Datasheet, PDF (2/15 Pages) Integrated Circuit Systems – FEMTOCLOCKS CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR

Integrated
Circuit
Systems, Inc.
ICS843051
FEMTOCLOCKS™ CRYSTAL-TO-
3.3V LVPECL CLOCK GENERATOR
TABLE 1. PIN DESCRIPTIONS
Number
Name
Type
Description
1
V_CCA
Power
Analog supply pin.
2
V_EE
Power
3,
4
XTAL_OUT,
XTAL_IN
Input
Negative supply pin.
Crystal oscillator interface. XTAL_IN is the input,
XTAL_OUT is the output.
5
FREQ_SEL Input Pulldown Frequency select pin. LVCMOS/LVTTL interface levels.
6, 7
nQ0, Q0
Output
Differential clock outputs. LVPECL interface levels.
8
V_CC
Power
Core supply pin.
NOTE: Pulldown refers to internal input resistors. See Table 2, Pin Characterristics, for typical values.
TABLE 2. PIN CHARACTERISTICS
Symbol
C_IN
R_PULLDOWN
Parameter
Input Capacitance
Input Pulldown Resistor
Test Conditions
Minimum
Typical
4
51
Maximum
Units
pF
KΩ
843051AG
www.icst.com/products/hiperclocks.html
2
REV. A DECEMBER 14, 2004