Rainbow Electronics DS1099 User Manual
General Description
The DS1099 is a low-cost, low-power, low-frequency
silicon oscillator that generates two square-wave outputs with frequencies between 0.25Hz and 1.048MHz.
Individual output enables allow both outputs to be
enabled/disabled independently. Both outputs are
capable of sinking 16mA, allowing them to directly
interface to light-emitting diodes (LEDs) as well as other
external circuitry. The DS1099 operates over a wide
supply voltage, making it suitable for both 3V and 5V
systems. The device is shipped from the factory custom
programmed and calibrated, ready to be inserted into
the end application.
Contact the factory for custom frequencies or requirements.
Applications
Flashing LED Status Indicators
Consumer Appliances
Automotive
Servers
Printers
Switch-Mode Power Supplies
Features
♦ Low-Cost, Low-Frequency EconOscillator™ with
Dual Outputs
♦ Factory Programmed
♦ Output Frequencies Independently Programmable
from 0.25Hz to 1.048MHz
♦ 2.7V to 5.5V Single-Supply Operation
♦ No External Timing Components Required
♦ Independent Output Enables
♦ CMOS/TTL-Compatible Outputs
♦ Oscillator Outputs Capable of Sinking 16mA to
Directly Drive LEDs
♦ Relieves Microprocessor of Periodic Interrupt
♦ Low-Power Consumption
♦ Operating Temperature Range: -40°C to +85°C
♦ ±100ppm/°C Temp Drift (MAX)
DS1099
Low-Frequency Dual EconOscillator
______________________________________________ Maxim Integrated Products 1
OE1
OEOGND
1
2
87N.C.
N.C.OUT0
V
CC
OUT1
µSOP
TOP VIEW
3
4
6
5
DS1099
Pin Configuration
Ordering Information
DS1099
OUT0
OUT1
GND
OE0
V
CC
V
CC
V
CC
OE1
N.C.
N.C.
OE1 CAN INSTEAD
BE TIED TO V
CC
IF OUT1 IS NOT USED.
OUTPUTS CAPABLE OF
SINKING 16mA
Typical Operating Circuit
Rev 0; 2/04
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.
PART TEMP RANGE
PIN-PACKAGE
DS1099U-α
0 α1
* -40°C to +85°C 8 µSOP
EconOscillator is a trademark of Dallas Semiconductor.
Ordering information is continued on the last page.
*Where α0and α1specify the factory programmed divider set-
tings for OUT0 and OUT1, respectively.
DS1099
Low-Frequency Dual EconOscillator
2 _____________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
RECOMMENDED DC OPERATING CONDITIONS
(TA= -40°C to +85°C)
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.
Voltage Range on VCCRelative to Ground...........-0.5V to +6.0V
Voltage Range on
OE0 and OE1
Relative to Ground.................................-0.5V to (V
CC
+ 0.5V),
not to exceed 6.0V
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range.............................-55°C to +125°C
Soldering Temperature.......................................See IPC/JEDEC
J-STD-020A Specification
PARAMETER
CONDITIONS
UNITS
Supply Voltage V
CC
(Note 1) 2.7 5.5 V
Input Logic 1 (OE0, OE1)V
IH
0.7 x
V
CC
+
0.3
V
Input Logic 0 (OE0, OE1)V
IL
+0.3 x
V
DC ELECTRICAL CHARACTERISTICS
(VCC= +2.7V to +5.5V, TA= -40°C to +85°C, unless otherwise noted.)
PARAMETER
CONDITIONS
UNITS
Standby Supply Current I
STBY
OE0 = OE1 = V
CC
275 µA
323
4kHz (both) 146Active Supply Current (Note 2) I
CC
CL = 15pF per output,
OE0 = OE1 = GND,
V
CC
= 3.3V
1Hz (both) 145
µA
High-Level Output Voltage
(OUT0, OUT1)
V
OH
IOH = -1mA, VCC = MIN 2.4 V
Low-Level Output Voltage
(OUT0, OUT1)
V
OL
IOL = 16mA 0.4 V
High-Level Input Current
(OE0, OE1)
I
IH
VIH = V
CC
µA
Low-Level Input Current
(OE0, OE1)
I
IL
VIL = 0.0V
µA
SYMBOL
MIN TYP MAX
V
CC
SYMBOL
1.048MHz (both)
-0.3
MIN TYP MAX
145
-1.0
V
CC
+1.0
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