DS1087L Rev 1 11/03 3.3V Spread-Spectrum EconOscillator General Description Features The DS1087L is a clock generator that produces a Factory Programmed Square-Wave Generator spread-spectrum (dithered) square-wave output of fre- from 130kHz to 66.6MHz quencies from 130kHz to 66.6MHz. The DS1087L is No External Timing Components Required shipped from the factory programmed at a specific fre- quency and spread-spectrum percentage. The user still EMI Reduction has access to an internal frequency divider, selectable 2.7V to 3.6V Supply 2% or 4% dithered output, and programmable output power-down/disable mode through a 2-wire program- User Programmable Down to 130kHz with Divider ming interface. All the device settings are stored in non- (Dependent on Master Oscillator Frequency) volatile (NV) EEPROM allowing it to operate in 2% or 4% Selectable Dithered Output stand-alone applications. The DS1087L has power- down and output-enable control pins for power-sensi- Glitchless Output-Enable Control tive applications. 2-Wire Serial Interface Nonvolatile Settings Applications Power-Down Mode Printers Programmable Output Power-Down/Disable Mode Copiers PCs Computer Peripherals Ordering Information Cell Phones PART TEMP RANGE PIN-PACKAGE Cable Modems DS1087LU-yxx -40C to +85C 8 SOP (118 mils) Pin Configuration Standard Frequency Options PART FREQUENCY (MHz) SPREAD (%) TOP VIEW DS1087LU-202 2.0480 2 DS1087LU-402 2.0480 4 DS1087LU-210 10.0 2 OUT 1 8 SCL DS1087LU-216 16.6 2 SPRD 2 7 SDA DS1087LU-266 66.6 2 DS1087L DS1087LU-466 66.6 4 V 3 6 PDN CC DS1087LU-yxx Fixed up to 66.6 2 or 4 GND 4 5 OE Custom frequencies and over 20 standard frequencies avail- able, contact factory. SOP (118 mils) EconOscillator is a trademark of Dallas Semiconductor. Typical Operating Circuits appear at end of data sheet. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.3.3V Spread-Spectrum EconOscillator ABSOLUTE MAXIMUM RATINGS Voltage Range on V Relative to Ground ..........-0.5V to +6.0V Programming Temperature Range .........................0C to +70C CC Voltage Range on SPRD, PDN, OE, SDA, SCL Storage Temperature Range .............................-55C to +125C Relative to Ground* ................................-0.5V to (V + 0.5V) Soldering Temperature ..................See IPC/JEDEC J-STD-020A CC Operating Temperature Range ...........................-40C to +85C *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. RECOMMENDED DC OPERATING CONDITIONS (V = 2.7V to 3.6V, T = -40C to +85C.) CC A PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS Supply Voltage V (Note 1) 2.7 3.6 V CC High-Level Input Voltage 0.7 x V + CC V V IH (SDA, SCL, SPRD, PDN, OE) V 0.3 CC Low-Level Input Voltage 0.3 x V -0.3 V IL (SDA, SCL, SPRD, PDN, OE) V CC DC ELECTRICAL CHARACTERISTICS (V = 2.7V to 3.6V, T = -40C to +85C.) CC A PARAMETER SYMBOL CONDITION MIN TYP MAX UNITS High-Level Output Voltage (OUT) V I = -4mA, V = min 2.4 V OH OH CC Low-Level Output Voltage (OUT) V I = 4mA 0.4 V OL OL V 3mA sink current 0 0.4 OL1 Low-Level Output Voltage (SDA) V V 6mA sink current 0 0.6 OL2 High-Level Input Current I V = 3.6V 1 A IH CC Low-Level Input Current I V = 0 -1 A IL IL Supply Current (Active) I C = 15pF (output at f)15mA CC L 0 Standby Current (Power-Down) I Power-down mode 5 A CCQ 2 DS1087L