843022I-02 Datasheet, PDF (2/17 Pages) Integrated Device Technology – FemtoClock® Crystal-to-3.3V, 2.5V LVPECL Clock Generator

843022I-02 DATA SHEET
TABLE 1. PIN DESCRIPTIONS
Number
Name
Type
Description
1
PWR_DN
Input
Pullup
Output state control pin. See Table 3.
LVCMOS/LVTTL interface levels.
2,
3
XTAL_OUT,
XTAL_IN
Input
Crystal oscillator interface. XTAL_in is the input,
XTAL_OUT is the output.
4, 5, 8
V
Power
EE
6, 13, 14, 15
nc
Unused
Negative supply pins.
No connect.
7
FREQ_SEL Input Pulldown Frequency select pin. LVCMOS/LVTTL interface levels.
9, 16
10
11, 12
V
CC
V
CCO
nQ, Q
Power
Power
Output
Power supply pins.
Output supply pin.
Differential clock outputs. LVPECL interface levels.
NOTE: Pullup and Pulldown refer to internal input resistors. See Table 2, Pin Characteristics, for typical values.
TABLE 2. PIN CHARACTERISTICS
Symbol
C
IN
R
PULLDOWN
R
PULLUP
Parameter
Input Capacitance
Input Pulldown Resistor
Input Pullup Resistor
Test Conditions
Minimum
Typical
4
51
51
Maximum
Units
pF
kΩ
kΩ
TABLE 3. PWR_DN FUNCTION TABLE
PWR_DWN Input
0
1
Description
Output in high impedance
Output in normal operation
FEMTOCLOCKS™ CRYSTAL-TO-3.3V, 2.5V
2
LVPECL CLOCK GENERATOR
REVISION A 11/4/15