
ICS844071AG REVISION B OCTOBER 10, 2012
2
2012 Integrated Device Technology, Inc.
ICS844071 Data Sheet
FEMTOCLOCK CRYSTAL-TO-LVDS CLOCK GENERATOR
Table 1. Pin Descriptions
NOTE: Pullup refers to an internal input resistor. See Table 2, Pin Characteristics, for typical values.
Table 2. Pin Characteristics
Number
Name
Type
Description
1VDDA
Power
Analog supply pin.
2
GND
Power
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
Pullup
Frequency select pin. LVCMOS/LVTTL interface levels.
6, 7
nQ, Q
Output
Differential output pair. LVDS interface levels.
8VDD
Power
Core supply pin.
Symbol
Parameter
Test Conditions
Minimum
Typical
Maximum
Units
CIN
Input Capacitance
4pF
RPULLUP
Input Pullup Resistor
51
k