■APPLICATIONS
●Crystal oscillator modules
●Communication equipment
●Microcomputers
●Clock units in motor control
●System clocks on boards
●Timers
◆CMOS
:
Low Power Consumption
: 4MHz ~ 70MHz
◆Built-In Oscillator Capacitors
◆
Oscillation Frequency
◆Divider Ratio
◆3-State Output
◆Supply Voltage
: fo/1, fo/2, fo/4, fo/8
: 5.0V
◆Mini Mold SOT-26 Package
●Palmtops
■GENERAL 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.
■FEATURES
High Precision
: Built-in oscillator capacitors
16pF (TYP.) (or selectable from 10 ~ 20pF)
On-chip amplifier feedback resistor
5MΩ (TYP.) (or selectable from
1.6kΩ ~ 8.4kΩ)
:
Oscillation Frequency: 4MHz ~ 70MHz
Output frequency can be selected from four frequencies :
Fundamental f0/1, Divided f0/2, f0/4, f0/8.
Divider Ratio
Output
:
Selectable from f0/1, f0/2, f0/4, f0/8
: 3-State, 10 - TTL fanout
Operating Voltage Range
The output buffer is 3-State and has a fanout of 10 - TTL.
: 4.0V ~ 6.0V
Small Supply Current
Stand-By Function
Low Cost
: Oscillator circuit can be created
from just an external crystal
Ultra Small Package : SOT-26 (150mW) mini mold
■PIN CONFIGURATION
■PIN ASSIGNMENT
PIN NUMBER PIN NAME
FUNCTION
Control *
1
2
3
4
5
6
/INH
XT
VSS
Q0
VDD
/XT
Oscillator Connection (Input)
GND
Output
Power Supply
Oscillator Connection (Output)
SOT-26
(TOP VIEW)
* Control pin has pull-up resistor built-in.
■INH, Q0 PIN FUNCTION
XC2151x51
/INH
"H"
Q0
Output
High Impedance (oscillation stopped)
Output
"L"
open
XC2151x55
/INH
Q0
"H"
"L"
open
Output
High Impedance (oscillation stopped)
Output
"H" = High level
"L" = Low level
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