MAX976/MAX978/MAX998 19-1299 Rev 3 3/09 Single/Dual/Quad, SOT23, Single-Supply, High-Speed, Low-Power Comparators General Description Features The MAX976/MAX978/MAX998 dual/quad/single, high- Single-Supply Operation Down to 2.7V speed, low-power comparators are optimized for 20ns Propagation Delay +3V/+5V single-supply applications. They achieve a 20ns propagation delay while consuming only 225A 225A Supply Current supply current per comparator. The MAX998 features a 1nA Shutdown Supply Current low-power shutdown mode that places the output in a high-impedance state and reduces supply current Rail-to-Rail Outputs to 1nA. Ground-Sensing Inputs The MAX976/MAX978/MAX998 inputs have a common- mode voltage range that extends 200mV below ground. Internal Hysteresis Ensures Clean Switching Their outputs are capable of rail-to-rail operation with- Available in Space-Saving Packages out external pullup circuitry, making these devices ideal SOT23 (MAX998) for interface with CMOS/TTL logic. All inputs and out- MAX (MAX976) puts can tolerate a continuous short-circuit fault condi- QSOP (MAX978) tion to either rail. The comparators internal hysteresis ensures clean output switching, even with slow-moving input signals. For space-critical applications, the single MAX998 is Ordering Information available in a 6-pin SOT23 package, the dual MAX976 is available in an 8-pin MAX package, and the quad SOT PART* PIN-PACKAGE MAX978 is available in a 16-pin QSOP package. TOP MARK MAX976ESA 8 SO Applications MAX976EUA 8 MAX Battery-Powered Systems MAX978ESE 16 Narrow SO Threshold Detectors/Discriminators MAX978EEE 16 QSOP 3V Systems MAX998ESA 8 SO IR Receivers MAX998EUT-T 6 SOT23 AAAO Digital Line Receivers *All devices are specified over the -40C to +85C temper- ature range. Typical Operating Circuit Pin Configurations V TOP VIEW CC V CC MAX998 OUT16 V CC 0.1F V CC OUT R D GND 2 5 SHDN GND SHDN + - MAX998 V CC IN+34 IN- R1 R2 V CC SOT23 IR RECEIVER Pin Configurations continued at end of data sheet MAX a registered trademark of Maxim Integrated Products, Inc. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim s website at www.maxim-ic.com.Single/Dual/Quad, SOT23, Single-Supply, High-Speed, Low-Power Comparators ABSOLUTE MAXIMUM RATINGS Supply Voltage (V ).............................................................+6V 8-Pin MAX (derate 4.10mW/C above +70C) ............330mW CC SHDN (MAX998).........................................................-0.3V to 6V 8-Pin SO (derate 5.88mW/C above +70C).................471mW All Other Pins..............................................-0.3V to (V + 0.3V) 16-Pin Narrow SO (derate 8.70mW/C above +70C) ..696mW CC Current into Input Pins......................................................20mA 16-Pin QSOP (derate 8.33mW/C above +70C)..........667mW Duration of Output Short Circuit to GND or V ........Continuous Operating Temperature Range ..........................-40C to +85C CC Continuous Power Dissipation (T = +70C) Storage Temperature Range .............................-65C to +160C A 6-Pin SOT23-6 (derate 7.1mW/C above +70C) .........571mW Lead Temperature (soldering, 10s) .................................+300C 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. ELECTRICAL CHARACTERISTICS (V = +2.7V to +5.5V, V = 0V, T = -40C to +85C, unless otherwise noted. Typical values are at T = +25C.) (Note 1) CC CM A A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage Range V Inferred from PSRR test 2.7 5.5 V CC V = 5.5V 300 650 CC Supply Current per Comparator I A CC V = 2.7V 225 CC Shutdown Supply Current I MAX998 only, SHDN = GND 1 500 nA SD Power-Supply Rejection Ratio PSRR 2.7V < V < 5.5V 63 100 dB CC Common-Mode Voltage Range V (Note 2) -0.2 V - 1.2 V CMR CC Common-Mode Rejection Ratio CMRR -0.2V V (V - 1.2V) 66 95 dB CM CC T = +25C 0.2 2 A Input Offset Voltage V V = 5V (Note 3) mV OS CC T = T to T 3 A MIN MAX MAX976EUA, MAX998EUT 0.3 1.5 5.0 mV Input-Referred Hysteresis V V = 5V (Note 4) mV HYS CC All others 0.5 1.5 4.0 Input Bias Current I 75 300 nA B Input Offset Current I 5 100 nA OS OUT Output-Voltage High V I = 2mA, V - V 0.1 0.4 V OH SOURCE CC OH OUT Output-Voltage Low V I = 2mA 0.1 0.4 V OL SINK Sinking 74 OUT Short-Circuit Current I V = 5.5V mA SH CC Sourcing 90 Input Capacitance C 3 pF IN SHDN Input-Voltage High V MAX998 only 0.65 x V V IH CC SHDN Input-Voltage Low V MAX998 only 0.2 x V V IL CC MAX998 only, SHDN = GND, OUT Leakage Current I 1 200 nA OUT V = 0V to V OUT CC SHDN Input Current I MAX998 only 1 200 nA SHDN Overdrive = 5mV 28 C =10pF, LOAD Propagation Delay t ns PD V = 5V (Note 5) CC Overdrive = 50mV 20 40 Propagation-Delay Skew t C =10pF (Note 6) 2 ns SKEW LOAD Propagation-Delay Matching t MAX976/MAX978 only 1 ns PD Between Channels Output Rise/Fall Time t /t C =10pF 1.6 ns R F LOAD Shutdown Delay Time t MAX998 only, V = 5V, I = 10% of typical 5 s SD CC CC 2 MAX976/MAX978/MAX998