Not Recommended for New Designs The MAX909 was manufactured for Maxim by an outside wafer foundry using a process that is no longer available. It is not recommended for new designs. A Maxim replacement or an industry second-source may be available. The data sheet remains available for existing users. The other parts on the following data sheet are not affected. For further information, please see the QuickView data sheet for this part or contact technical support for assistance. MAX907/MAX908/MAX909 19-0129 Rev 7 1/06 Dual/Quad/Single, High-Speed, Ultra-Low-Power, Single-Supply TTL Comparators General Description Features 40ns Propagation Delay The MAX907/MAX908/MAX909 are dual/quad/single, high-speed, ultra-low-power voltage comparators 700A (3.5mW) Supply Current per Comparator designed for use in systems powered from a single Single 4.5V to 5.5V Supply Operation +5V supply the MAX909 also accepts dual 5V sup- (or 5V, MAX909 only) plies. Their 40ns propagation delay (with 5mV input Wide Input Range Includes Ground overdrive) is achieved with a power consumption of (or -5V, MAX909 only) only 3.5mW per comparator. The wide input common- Low, 500V Offset Voltage mode range extends from 200mV below ground (below the negative supply rail for the MAX909) to within 1.5V Internal Hysteresis Provides Clean Switching of the positive supply rail. TTL-Compatible Outputs (Complementary on MAX909) Because they are micropower, high-speed compara- tors that operate from a single +5V supply and include Input and Output Short-Circuit Protection built-in hysteresis, these devices replace a variety of Internal Latch (MAX909 only) older comparators in a wide range of applications. MAX907/MAX908/MAX909 outputs are TTL-compatible, Ordering Information requiring no external pullup circuitry. All inputs and out- PART TEMP RANGE PIN-PACKAGE puts can be continuously shorted to either supply rail without damage. These easy-to-use comparators incor- MAX907CPA 0C to +70C 8 Plastic DIP porate internal hysteresis to ensure clean output switch- MAX907CSA 0C to +70C 8SO ing even when the devices are driven by a slow-moving MAX907EPA -40C to +85C 8 Plastic DIP input signal. MAX907ESA -40C to +85C 8SO The MAX909 features complementary outputs and an MAX907MSA/PR* -55C to +125C 8SO output latch. A separate supply pin for extending the analog input range down to -5V is also provided. Ordering Information continued at end of data sheet. *Go to www.maxim-ic.com/PR-1 for details on high-reliability The dual MAX907 and single MAX909 are available in plastic processing. 8-pin DIP and SO packages, and the quad MAX908 is available in 14-pin DIP and SO packages. These com- Pin Configurations parators are ideal for single +5V-supply applications that require the combination of high speed, precision, TOP VIEW and ultra-low power dissipation. OUTA 1 8 V+ Applications INA- 2 7 OUTB Battery-Powered Systems INA+ 3 6 INB- High-Speed A/D Converters 4 GND 5 INB+ MAX907 High-Speed V/F Converters DIP/SO Line Receivers Threshold Detectors/Discriminators OUTA 1 14 OUTD High-Speed Sampling Circuits INA- 2 13 IND- Zero-Crossing Detectors INA+ 3 IND+ 12 4 V+ 11 GND MAX908 INB+ 5 10 INC+ INB- 6 9 INC- 7 OUTB 8 OUTC DIP/SO Pin Configurations continued 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.