ICS844251-14 Datasheet, PDF (2/16 Pages) Integrated Device Technology – FEMTOCLOCK™ CRYSTAL-TO-LVDS CLOCK GENERATOR

ICS844251-14
FEMTOCLOCK™CRYSTAL-TO-LVDS CLOCK GENERATOR
Table 1. Pin Descriptions
Number
Name
Type
Description
1
V_DDA
Output
2
GND
Power
Analog supply pin.
Power supply ground.
3,
4
XTAL_OUT
XTAL_IN
Input
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
nQ, Q
Output
Differential output pair. LVDS interface levels.
8
V_DD
Power
Core supply pin.
NOTE: Pullup refers to internal input resistors. See Table 2, Pin Characteristics, for typical values.
Table 2. Pin Characteristics
Symbol Parameter
C_IN
Input Capacitance
R_PULLdown Input Pulldown Resistor
Test Conditions
Minimum
Typical
4
51
Maximum
Units
pF
kΩ
IDT™ / ICS™ LVDS CLOCK GENERATOR
2
ICS844251BG-14 REV. A MAY 1, 2009