spread spectrum (dithered) square-wave output of fre-
quencies from 130kHz to 66.6MHz. The DS1089L is
shipped from the factory programmed at a specific fre-
quency. The DS1089L is pin-for-pin compatible with the
DS1087L, however, the DS1089L dithers at equal per-
centages above and below the center frequency. The
user still has access to the internal frequency divider,
selectable
±1%, ±2%, ±4%,
or
±8%
dithered output,
dithering rate, and programmable output power-
down/disable mode through an I
2
C-compatible pro-
gramming interface. All the device settings are stored
in nonvolatile (NV) EEPROM allowing it to operate in
stand-alone applications. The DS1089L also has
power-down and output-enable control pins for power-
sensitive applications.
Features
♦
Factory-Programmed Square-Wave Generator
from 33.3MHz to 66.6MHz
♦
Center Frequency Remains Constant Independent
of Dither Percentage
♦
No External Timing Components Required
♦
EMI Reduction
♦
Variable Dither Frequency
♦
User Programmable Down to 130kHz with Divider
(Dependent on Master Oscillator Frequency)
♦
±1%, ±2%, ±4%,
or
±8%
Selectable Dithered
Output
♦
Glitchless Output-Enable Control
♦
I
2
C-Compatible Serial Interface
♦
Nonvolatile Settings
♦
Power-Down Mode
♦
Programmable Output Power-Down/Disable Mode
DS1089L
Applications
Automotive Infotainment
Printers
Copiers
Computer Peripherals
POS Terminals
Cable Modems
Ordering Information
PART
DS1089LU-yxx*
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
8 µSOP (118 mil)
*See
Standard Frequency Options Table.
Pin Configuration and Typical Operating Circuits appear at end of data sheet.
Standard Frequency Options
PART
DS1089LU-21G
DS1089LU-4CL
DS1089LU-22F
DS1089LU-23C
DS1089LU-450
DS1089LU-866
DS1089LU-yxx
FREQUENCY (MHz)
14.7456
18.432
24.576
33.3
50.0
66.6
Fixed up to 66.6
SPREAD (±%)
1
2
1
1
2
4
1, 2, 4, or 8
DITHER FREQUENCY
f
MOSC
/ 4096
f
MOSC
/ 4096
f
MOSC
/ 2048
f
MOSC
/ 4096
f
MOSC
/ 4096
f
MOSC
/ 4096
f
MOSC
/ 2048 or 4096 or 8192
Add “/T” for Tape and Reel.
Custom frequencies available, contact factory.
EconOscillator is a trademark of Dallas Semiconductor Corp.
______________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
3.3V Center Spread-Spectrum EconOscillator™
DS1089L
ABSOLUTE MAXIMUM RATINGS
Voltage on V
CC
Relative to Ground.......................-0.5V to +6.0V
Voltage on SPRD,
PDN,
OE, SDA,
SCL Relative to Ground* ........................-0.5V to (V
CC
+ 0.5V)
Operating Temperature Range ...........................-40°C to +85°C
*This
voltage must not exceed 6.0V.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Programming Temperature Range .........................0°C to +70°C
Storage Temperature Range .............................-55°C to +125°C
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