Series
ICs for use with Crystal Oscillators
NCMOS
: Low Supply Current
鈻燗pplications
GCrystal
Oscillator Modules
GCommunication
Equipment
GMicrocomputers
GClock
Units in Motor Control
GSystem
Clocks on Boards
GTimers
GPalmtops
NOscillator
Frequency : 4MHz ~ 70MHz
NBuilt-In
Oscillator Capacitors
NDivider
Ratio
N3-State
Output
NSupply
Voltage
: 5.0V
NMini
Mold SOT-26 Package
: fo/1, fo/2, fo/4, fo/8
鈻燝eneral Description
The XC2151 series are a group of high frequency, CMOS low power
crystal oscillators with oscillator & divider circuitry, oscillator capacitors
and amplifier feedback resistors built-in.
An oscillator circuit can be created from just an external crystal.
Output frequency can be selected from four frequencies :
Fundamental f0/1, Divided f0/2, f0/4, f0/8.
The output buffer is 3-State and has a fanout of 10 - TTL.
鈻燜eatures
High Precision
: Built-in oscillator capacitors
16pF TYP (or selectable from 10 ~ 20pF)
: On-chip amplifier feedback resistor
5M鈩?TYP (or selectable from 1.6k鈩?~
8.4k鈩?
Oscillator Frequency
: 4MHz ~ 70MHz
Divider Ratio
: Selectable from f0/1, f0/2, f0/4, f0/8
Output
: 3-State, 10 - TTL fanout
Operating Voltage Range
: 4.0V ~ 6.0V
Small Quiescent Current
Stand-By Function
Low Cost
: Oscillator circuit can be created from just
an external crystal
Ultra Small Package
: SOT-26 (150mW) mini mold
鈻燩in Configuration
XT
錛?/div>
V
DD
錛?/div>
Q
O
錛?/div>
鈻燩in Assignment
PIN NUMBER
1
2
3
4
5
6
PIN NAME
/INH
XT
V
SS
Q
0
V
DD
/XT
FUNCTION
Control *
Oscillator Connection (Input)
GND
Output
Power Supply
Oscillator Connection (Output)
SOT-26
(TOP VIEW)
1
INH
錛?/div>
XT
錛?/div>
V
SS
* Control pin has pull-up resistor built-in.
鈻營NH, Q
0
Pin Function
XC2151x51
/INH
"H"
"L"
open
Q0
Output
High Impedance (oscillator stopped)
Output
14
XC2151x55
/INH
"L"
open
Q0
Output
High Impedance (oscillator stopped)
Output
"H" = High Level
"L" = Low Level
1023
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