◆CMOS
:Low Power Consumption
◆Oscillation
Frequency : 4MHz ~ 70MHz
◆Built-In
Oscillator Capacitors
◆Divider
Ratio
: fo/1, fo/2, fo/4, fo/8
◆3-State
Output
◆Supply
Voltage
: 5.0V
◆Mini
Mold SOT-26 Package
■APPLICATIONS
●Crystal
oscillator modules
●Communication
equipment
●Microcomputers
●Clock
units in motor control
●System
clocks on boards
●Timers
●Palmtops
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.
■GENERAL
DESCRIPTION
: 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
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 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
■FEATURES
High Precision
■PIN
CONFIGURATION
■PIN
ASSIGNMENT
PIN NUMBER PIN NAME
1
/INH
2
XT
3
V
SS
4
Q
0
5
V
DD
6
/XT
FUNCTION
Control *
Oscillator Connection (Input)
GND
Output
Power Supply
Oscillator Connection (Output)
SOT-26
(TOP VIEW)
* Control pin has pull-up resistor built-in.
■INH,
Q
0
PIN FUNCTION
XC2151x51
/INH
"H"
"L"
open
Q
0
Output
High Impedance (oscillation stopped)
Output
Q
0
Output
High Impedance (oscillation stopped)
Output
XC2151x55
/INH
"H"
"L"
open
"H" = High level
"L" = Low level
1529
TOREX [ TOREX SEMICONDUCTOR ]
