MAX999

19-1129; Rev 6; 2/08 Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators _________________General Description The MAX961–MAX964/MAX997/MAX999 are low-power, ultra-high-speed comparators with internal hysteresis. These devices are optimized for single +3V or +5V operation. The input common-mode range extends 100mV Beyond-the-Rails™, and the outputs can sink or source 4mA to within 0.52V of GND and V CC . Propagation delay is 4.5ns (5mV overdrive), while supply current is 5mA per comparator. The MAX961/MAX963/MAX964 and MAX997 have a shutdown mode in which they consume only 270µA supply current per comparator. The MAX961/MAX963 provide complementary outputs and a latch-enable feature. Latch enable allows the user to hold a valid comparator output. The MAX999 is available in a tiny SOT23-5 package. The single MAX961/MAX997 and dual MAX962 are available in space-saving 8-pin µMAX® packages. ____________________________Features ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ Ultra-Fast, 4.5ns Propagation Delay Ideal for +3V and +5V Single-Supply Applications Beyond-the-Rails Input Voltage Range Low, 5mA Supply Current (MAX997/MAX999) 3.5mV Internal Hysteresis for Clean Switching Output Latch (MAX961/MAX963) TTL/CMOS-Compatible Outputs Shutdown Mode (MAX961/MAX963/MAX964/MAX997) ♦ Available in Space-Saving Packages: 5-Pin SOT23 (MAX999) 8-Pin µMAX (MAX961/MAX962/MAX997) 16-Pin QSOP (MAX964) MAX961–MAX964/MAX997/MAX999 Ordering Information PART MAX961ESA MAX961EUA-T MAX962ESA MAX962EUA-T MAX963ESD MAX964ESE MAX964EEE MAX997ESA MAX997EUA-T MAX999AAUK+T MAX999EUK-T PIN-PACKAGE 8 SO 8 µMAX-8 8 SO 8 µMAX-8 14 SO 16 Narrow SO 16 QSOP 8 SO 8 µMAX-8 5 SOT23-5 5 SOT23-5 TOP MARK — — — — — — — — — +AFEI ACAB PKG CODE S8-2 U8-1 S8-2 U8-1 S14-1 S16-1 E16-1 S8-2 U8-1 U5+1 U5-1 ________________________Applications Single 3V/5V Systems Portable/Battery-Powered Systems Threshold Detectors/Discriminators GPS Receivers Line Receivers Zero-Crossing Detectors High-Speed Sampling Circuits Selector Guide COMPLEMENTARY OUTPUT NO. OF COMPARATORS PIN-PACKAGE SHUTDOWN LATCH ENABLE Note: All E grade devices are specified over the -40°C to +85°C operating temperature range. MAX999AAUK is specified over the -40°C to +125°C operating temperature range. +Denotes a lead-free package. PART Pin Configurations TOP VIEW Q1 5 VCC MAX961 MAX962 MAX963 MAX964 MAX997 MAX999 1 2 2 4 1 1 Yes No Yes No No No Yes No Yes Yes Yes No Yes No Yes No No No 8 SO/µMAX 8 SO/µMAX 14 SO 16 SO/QSOP 8 SO/µMAX 5 SOT23 GND 2 MAX999 IN+ 3 4 IN- Beyond-the-Rails is a trademark and µMAX is a registered trademark of Maxim Integrated Products, Inc. SOT23-5 Pin Configurations continued at end of data sheet. ________________________________________________________________ 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, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators MAX961–MAX964/MAX997/MAX999 ABSOLUTE MAXIMUM RATINGS Supply Voltage, VCC to GND................................... -0.3V to +6V All Other Pins..............................................-0.3V to (VCC + 0.3V) Current into Input Pins ......................................................±20mA Duration of Output Short Circuit to GND or VCC .......Continuous Continuous Power Dissipation (TA = +70°C) 5-Pin SOT23 (derate 7.1mW/°C above +70°C).......571mW/°C 8-Pin SO (derate 5.88mW/°C above +70°C)...........471mW/°C 8-Pin µMAX (derate 4.10mW/°C above +70°C) ......330mW/°C 14-Pin SO (derate 8.33mW/°C above +70°C).........667mW/°C 16-Pin SO (derate 8.70mW/°C above +70°C).........696mW/°C 16-Pin QSOP (derate 8.33mW/°C above +70°C)....667mW/°C Operating Temperature Range MAX96_E/MAX99_E.........................................-40°C to +85°C MAX999AAUK ...............................................-40°C to +125°C Storage Temperature Range ............................ -65°C to +160°C Lead Temperature (soldering, 10s) .................................+300°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. ELECTRICAL CHARACTERISTICS (VCC = +2.7V to +5.5V, VCM = 0V, COUT = 5pF, VSHDN = 0V, VLE = 0V, unless otherwise noted. TMIN to TMAX is -40°C to +85°C for all E grade devices. For MAX999AAUK only, TMIN to TMAX is -40°C to +125°C.) (Note 1) PARAMETER Supply Voltage Input Common-Mode Voltage Range SYMBOL VCC VCMR CONDITIONS Inferred by PSRR (Note 2) VCM = -0.1V or 5.1V, VCC = 5V (Note 3) µMAX, SOT23 MAX999AAUK All other E packages TA = +25°C MIN 2.7 -0.1 ±2.0 ±2.0 ±2.0 3.5 VCM = -0.1V or 5.1V, VCC = 5V (Note 4) µMAX, SOT23 MAX999AAUK All other E packages ±0.5 ±0.5 ±0.5 ±1.5 ±1.5 ±1.5 ±15 ±15 ±4.5 ±6.0 ±2.0 ±30 ±15 µA mV TYP MAX 5.5 VCC + 0.1 ±3.5 ±3.5 ±3.5 MIN 2.7 -0.1 TMIN to TMAX TYP MAX 5.5 VCC + 0.1 ±6.5 ±8.0 ±4.0 mV mV UNITS V V Input-Referred Trip Points VTRIP Input-Referred Hysteresis Input Offset Voltage VOS Input Bias Current IB µMAX, SOT23 VIN+ = VIN= 0V or VCC, All other E VCC = 5V packages VCC = 5.5V, VIN- = 0V, IIN+ = 100µA 2.1 3 Differential Input Clamp Voltage Input Capacitance Differential Input Impedance Common-Mode Input RIND RINCM V pF kΩ kΩ VCC = 5V VCC = 5V 8 130 2 _______________________________________________________________________________________ Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators ELECTRICAL CHARACTERISTICS (continued) (VCC = +2.7V to +5.5V, VCM = 0V, COUT = 5pF, VSHDN = 0V, VLE = 0V, unless otherwise noted. TMIN to TMAX is -40°C to +85°C for all E grade devices. For MAX999AAUK only, TMIN to TMAX is -40°C to +125°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN VCC = 5V, VCM = -0.1V to 5.1V (Note 5) µMAX, SOT23 All other E packages TA = +25°C TYP 0.1 MAX 0.3 MIN TMIN to TMAX TYP MAX 1.0 mV/V 0.1 0.3 0.5 UNITS MAX961–MAX964/MAX997/MAX999 Common-Mode Rejection Ratio CMRR Power-Supply Rejection Ratio PSRR VCM = 0V (Note 6) E grade VCC 0.52 VCC 0.52 0.05 0.3 VCC 0.52 0.3 mV/V Output High Voltage VOH ISOURCE = 4mA MAX999AAUK E grade MAX999AAUK V VCC 0.55 0.52 0.52 30 60 4 0.52 0.55 V mA pF 11 8 6.5 6.5 0.5 11 9 6.5 7.0 0.5 mA mA Output Low Voltage Capacitive Slew Current Output Capacitance VOL ISINK = 4mA VOUT = 1.4V, VCC = 2.7V MAX961/MAX963, VCC = 5V 7.2 5 5 5 0.27 Supply Current per Comparator ICC MAX962/MAX964, VCC = 5V MAX997/MAX999E, VCC = 5V MAX999AAUK, VCC = 5V Shutdown Supply Current per Comparator Shutdown Output Leakage Current Rise/Fall Time Logic-Input High Logic-Input Low Logic-Input Current Propagation Delay Differential Propagation Delay Propagation-Delay Skew ISHDN MAX961/MAX963/MAX964/ MAX997, VCC = 5V MAX961/MAX963/MAX964/ MAX997, VOUT = 5V and VCC - 5V 1 20 µA t R, t F VIH VIL IIL, IIH tPD VCC = 5V VCC/2 + 0.4 2.3 VCC/2 + 0.4 VCC/2 - 0.4 VCC/2 - 0.4 ±30 8.5 ns V V µA ns VLOGIC = 0V or VCC 5mV overdrive (Note 7) E grade MAX999AAUK 4.5 4.5 0.3 0.3 ±15 7.0 7.0 10 ns ns tPD tSKEW Between any two channels or outputs (Q/Q) Between tPD- and tPD+ _______________________________________________________________________________________ 3 Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators MAX961–MAX964/MAX997/MAX999 ELECTRICAL CHARACTERISTICS (continued) (VCC = +2.7V to +5.5V, VCM = 0V, COUT = 5pF, VSHDN = 0V, VLE = 0V, unless otherwise noted. TMIN to TMAX is -40°C to +85°C for all E grade devices. For MAX999AAUK only, TMIN to TMAX is -40°C to +125°C.) (Note 1) PARAMETER Data-to-Latch Setup Time Latch-to-Data Hold Time Latch Pulse Width Latch Propagation Delay Shutdown Time Shutdown Disable Time SYMBOL tSU tH tLPW tLPD tOFF tON CONDITIONS MAX961/MAX963 (Note 8) MAX961/MAX963 (Note 8) MAX961/MAX963 (Note 8) MAX961/MAX963 (Note 8) Delay until output is high-Z (> 10kΩ) Delay until output is valid 150 250 TA = +25°C MIN TYP MAX 5 5 5 10 MIN TMIN to TMAX TYP MAX 5 5 5 10 UNITS ns ns ns ns ns ns Note 1: The MAX961EUA/MAX962EUA/MAX997EUA/MAX999EUK are 100% production tested at TA = +25°C; all temperature specifications are guaranteed by design. Note 2: Inferred by CMRR. Either input can be driven to the absolute maximum limit without false output inversion, provided that the other input is within the input voltage range. Note 3: The input-referred trip points are the extremities of the differential input voltage required to make the comparator output change state. The difference between the upper and lower trip points is equal to the width of the input-referred hysteresis zone. (See Figure 1.) Note 4: Input offset voltage is defined as the mean of the trip points. Note 5: CMRR = (VOSL - VOSH) / 5.2V, where VOSL is the offset at VCM = -0.1V and VOSH is the offset at VCM = 5.1V. Note 6: PSRR = (VOS2.7 - VOS5.5) / 2.8V, where VOS2.7 is the offset voltage at VCC = 2.7V, and VOS5.5 is the offset voltage at VCC = 5.5V. Note 7: Propagation delay for these high-speed comparators is guaranteed by design characterization because it cannot be accurately measured using automatic test equipment. A statistically significant sample of devices is characterized with a 200mV step and 100mV overdrive over the full temperature range. Propagation delay can be guaranteed by this characterization, since DC tests ensure that all internal bias conditions are correct. For low overdrive conditions, VTRIP is added to the overdrive. Note 8: Guaranteed by design. 4 _______________________________________________________________________________________ Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators __________________________________________Typical Operating Characteristics (VCC = +3.0V, CLOAD = 5pF, 5mV of overdrive, TA = +25°C, unless otherwise noted.) PROPAGATION DELAY vs. INPUT OVERDRIVE MAX997toc01 MAX961–MAX964/MAX997/MAX999 PROPAGATION DELAY vs. TEMPERATURE MAX997toc0202 PROPAGATION DELAY vs. CAPACITIVE LOAD MAX997toc03 7.5 7.0 PROPAGATION DELAY (ns) 6.5 6.0 5.5 5.0 4.5 tPD4.0 3.5 0 tPD+ 6.8 6.6 PROPAGATION DELAY (ns) 6.4 6.2 6.0 5.8 5.6 5.4 5.2 5.0 tPD+ tPD- 8 PROPAGATION DELAY (ns) 7 tPD6 tPD+ 5 4 -40 -20 0 20 40 60 85 0 20 40 60 80 100 120 TEMPERATURE (°C) CAPACITIVE LOAD (pF) 10 20 30 40 50 60 70 80 90 100 INPUT OVERDRIVE (mV) PROPAGATION DELAY vs. SUPPLY VOLTAGE MAX997toc04 OUTPUT HIGH VOLTAGE vs. SOURCE CURRENT TA = +85°C TA = +25°C TA = -40°C VOL (V) MAX997toc05 OUTPUT LOW VOLTAGE vs. SINK CURRENT MAX997toc06 6.0 2.80 2.75 2.70 0.5 PROPAGATION DELAY (ns) 0.4 TA = -40°C TA = +25°C TA = +85°C 5.5 VOH (V) 0.3 tPD- 2.65 2.60 0.2 tPD+ 5.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 SUPPLY VOLTAGE (V) 2.55 2.50 1 10 100 1000 10,000 SOURCE CURRENT (μA) 0.1 0 1 10 100 1000 10,000 SINK CURRENT (μA) MAX961/MAX963 SUPPLY CURRENT PER COMPARATOR vs. SUPPLY VOLTAGE MAX997toc07A MAX962/MAX964 SUPPLY CURRENT PER COMPARATOR vs. SUPPLY VOLTAGE MAX997toc07B MAX997/MAX999 SUPPLY CURRENT PER COMPARATOR vs. SUPPLY VOLTAGE MAX9997toc7C 8.0 7 9 8 SUPPLY CURRENT (mA) 7 6 TA = +85°C 5 4 TA = -40°C TA = +25°C SUPPLY CURRENT (mA) 7.0 TA = +85°C TA = +25°C SUPPLY CURRENT (mA) 7.5 6 5 TA = +85°C TA = +25°C TA = -40°C 6.5 TA = -40°C 4 6.0 2 3 4 SUPPLY VOLTAGE (V) 5 6 3 2 3 4 SUPPLY VOLTAGE (V) 5 6 3 2 3 4 SUPPLY VOLTAGE (V) 5 6 _______________________________________________________________________________________ 5 Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators MAX961–MAX964/MAX997/MAX999 ____________________________Typical Operating Characteristics (continued) (VCC = +3.0V, CLOAD = 5pF, 5mV of overdrive, TA = +25°C, unless otherwise noted.) MAX961/MAX963/MAX964/MAX997 SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE MAX997toc08 VOLTAGE TRIP POINT/INPUT OFFSET VOLTAGE vs. TEMPERATURE MAX997toc09 VOLTAGE TRIP POINT/INPUT OFFSET VOLTAGE vs. SUPPLY VOLTAGE 3 TRIP POINT / VOS (mV) 2 1 0 -1 -2 VOS VTRIP+ MAX997toc10 310 SHUTDOWN SUPPLY CURRENT (μA) VCC = 5.0V 3 2 TRIP POINT / VOS (mV) 1 VOS 0 -1 -2 VTRIP-3 VTRIP+ 4 260 210 160 VCC = 2.7V 110 -3 -4 20 40 60 85 2 3 4 VTRIP- 60 -40 -20 0 20 40 60 80 TEMPERATURE (°C) -40 -20 0 5 6 TEMPERATURE (°C) SUPPLY VOLTAGE (V) INPUT BIAS CURRENT (IB+, IB-) vs. COMMON-MODE VOLTAGE MAX997toc11 INPUT BIAS CURRENT/INPUT OFFSET CURRENT vs. TEMPERATURE MAX997toc12 SHORT-CIRCUIT OUTPUT CURRENT vs. TEMPERATURE OUTPUT SHORTED TO VCC (SINKING) MAX997toc13 8 6 4 IB+, IB- (μA) 2 0 -2 -4 -6 -8 -1 0 1 2 3 4 5 6 VCM (V) TA = -40°C TA = +85°C TA = +25°C VCC = 5.0V VIN = VOS NEGATIVE VALUES REPRESENT CURRENT FLOWING INTO THE DEVICE 4.0 IBINPUT BIAS/OFFSET CURRENT (μA) 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 -0.5 -40 -20 0 20 40 60 IOS IB+ 140 SHORT-CIRCUIT CURRENT (mA) 120 100 80 60 40 20 0 OUTPUT SHORTED TO GND (SOURCING) 80 -40 -20 0 20 40 60 80 TEMPERATURE (°C) TEMPERATURE (°C) 50MHz RESPONSE VIN = 100mVP-P VOS MAX997toc14 INPUT 50mV/div OUTPUT 1V/div GND 5ns/div 6 _______________________________________________________________________________________ Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators ____________________________Typical Operating Characteristics (continued) (VCC = +3.0V, CLOAD = 5pF, 5mV of overdrive, TA = +25°C, unless otherwise noted.) PROPAGATION DELAY (tPD+) GND INPUT 50mV/div GND MAX961–MAX964/MAX997/MAX999 PROPAGATION DELAY (tPD-) MAX997toc16 MAX997toc15 INPUT 50mV/div OUTPUT 1V/div GND 5ns/div GND 5ns/div OUTPUT 1V/div ______________________________________________________________Pin Description PIN MAX997 1, 5 2 3 — 4 — — — MAX999 — 4 3 — 2 — — — MAX961 — 2 1 4 5 — — — MAX962 — 2 1 — 5 — 4 3 MAX963 — 1 2 3, 5 4, 11 — 6 7 — — — — 8 9 — — 10 12 13 14 MAX964 — 1 2 — 12 16 3 4 5 6 7 8 9 14 11 10 — 13 15 — NAME N.C. IN-, INALE, LEA, LEB GND N.C. INBINB+ INCINC+ INDIND+ SHDN QB QC QD QB VCC Q, QA Q, QA FUNCTION No Connection. Not internally connected. Comparator A Inverting Input Latch-Enable Input. The output latches when LE_ is high. The latch is transparent when LE_ is low. Ground No Connection. Connect to GND to prevent parasitic feedback. Comparator B Inverting Input Comparator B Noninverting Input Comparator C Inverting Input Comparator C Noninverting Input Comparator D Inverting Input Comparator D Noninverting Input Shutdown Input. The device shuts down when SHDN is high. Comparator B Output Comparator C Output Comparator D Output Comparator B Complementary Output Positive Supply Input (VCC to GND must be ≤5.5V) Comparator A TTL Output Comparator A Complementary Output IN+, INA+ Comparator A Noninverting Input — — — — — — — — — — — — — — 8 — — — — 7 6 — — — — — — — 5 1 — — 3 — — — — 8 6 7 — 6 — — — 8 7 — _______________________________________________________________________________________ 7 Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators MAX961–MAX964/MAX997/MAX999 _______________Detailed Description The MAX961–MAX964/MAX997/MAX999 single-supply comparators feature internal hysteresis, ultra-highspeed operation, and low power consumption. Their outputs are guaranteed to pull within 0.52V of either rail without external pullup or pulldown circuitry. Beyondthe-Rails input voltage range and low-voltage, singlesupply operation make these devices ideal for portable equipment. These comparators all interface directly to CMOS logic. voltage to move quickly past the other, thus taking the input out of the region where oscillation occurs. Standard comparators require hysteresis to be added with external resistors. The fixed internal hysteresis eliminates these resistors. The MAX961/MAX963 include internal latches that allow storage of comparison results. LE has a high input impedance. If LE is low, the latch is transparent (i.e., the comparator operates as though the latch is not present). The comparator’s output state is stored when LE is pulled high. All timing constraints must be met when using the latch function (Figure 2). Timing Most high-speed comparators oscillate in the linear region because of noise or undesirable parasitic feedback. This can occur when the voltage on one input is close to or equal to the voltage on the other input. These devices have a small amount of internal hysteresis to counter parasitic effects and noise. The added hysteresis of the MAX961–MAX964/MAX997/ MAX999 creates two trip points: one for the rising input voltage and one for the falling input voltage (Figure 1). The difference between the trip points is the hysteresis. When the comparator’s input voltages are equal, the hysteresis effectively causes one comparator input Input Stage Circuitry The MAX961–MAX964/MAX997/MAX999 include internal protection circuitry that prevents damage to the precision input stage from large differential input voltages. This protection circuitry consists of two groups of three front-to-back diodes between IN+ and IN-, as well as two 200Ω resistors (Figure 3). The diodes limit the differential voltage applied to the comparator’s internal circuitry to no more than 3VF, where VF is the diode’s forward-voltage drop (about 0.7V at +25°C). VTRIP+ VIN+ VHYST VOS = VTRIP+ + VTRIP2 VIN- = 0V VTRIP- VOH Q Q VOL VOH VOL Figure 1. Input and Output Waveforms, Noninverting Input Varied 8 _______________________________________________________________________________________ Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators MAX961–MAX964/MAX997/MAX999 tSU tH DIFFERENTIAL INPUT VOLTAGE VOS tLPW VCC LE 0V tPD VOH Q VOL VCC 2 tLPD VCC 2 Q VCC 2 tSKEW tSKEW Figure 2. MAX961/MAX963 Timing Diagram MAX961-MAX964 MAX997 MAX999 200Ω IN+ For a large differential input voltage (exceeding 3VF), this protection circuitry increases the input bias current at IN+ (source) and IN- (sink). (IN+ - IN-) - 3VF Input current = ———————— 2 x 200 Input currents with large differential input voltages should not be confused with input bias currents (IB). As long as the differential input voltage is less than 3VF, this input current is less than 2IB. The input circuitry allows the MAX961–MAX964/ MAX997/MAX999’s input common-mode range to extend 100mV beyond both power-supply rails. The output remains in the correct logic state if one or both inputs are within the common-mode range. Taking either input outside the common-mode range causes the input to saturate and the propagation delay to increase. TO INTERNAL CIRCUITRY IN200Ω TO INTERNAL CIRCUITRY Figure 3. Input Stage Circuitry _______________________________________________________________________________________ 9 Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators MAX961–MAX964/MAX997/MAX999 VCC ISOURCE MAX961-MAX964 MAX997 MAX999 Q, Q ISINK GND Figure 4. Output Stage Circuitry Figure 5. MAX961 PCB Layout Output Stage Circuitry The MAX961–MAX964/MAX997/MAX999 contain a current-driven output stage, as shown in Figure 4. During an output transition, ISOURCE or ISINK is pushed or pulled to the output pin. The output source or sink current is high during the transition, creating a rapid slew rate. Once the output voltage reaches VOH or VOL, the source or sink current decreases to a small value, capable of maintaining the VOH or VOL in static condition. This decrease in current conserves power after an output transition has occurred. One consequence of a current-driven output stage is a linear dependence between the slew rate and the load capacitance. A heavy capacitive load slows down the voltage output transition. __________Applications Information Circuit Layout and Bypassing The MAX961–MAX964/MAX997/MAX999’s high bandwidth requires a high-speed layout. Follow these layout guidelines: 1) Use a PCB with a good, unbroken, low-inductance ground plane. 2) Place a decoupling capacitor (a 0.1µF ceramic surface-mount capacitor is a good choice) as close to VCC as possible. 3) On the inputs and outputs, keep lead lengths short to avoid unwanted parasitic feedback around the comparators. Keep inputs away from outputs. Keep impedance between the inputs low. 4) Solder the device directly to the printed circuit board rather than using a socket. 5) Refer to Figure 5 for a recommended circuit layout. 6) For slow-moving input signals, take care to prevent parasitic feedback. A small capacitor (1000pF or less) placed between the inputs can help eliminate oscillations in the transition region. This capacitor causes negligible degradation to t PD w hen the source impedance is low. Shutdown Mode When SHDN is high, the MAX961/MAX963/MAX964/ MAX997 shut down. When shut down, the supply current drops to 270µA per comparator, and the outputs become high impedance. SHDN has a high input impedance. Connect SHDN to GND for normal operation. Exit shutdown with LE low; otherwise, the output is indeterminate. 10 ______________________________________________________________________________________ Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators Pin Configurations TOP VIEW IN+ 1 IN- 2 SHDN 3 LE 4 8 VCC Q Q GND INA+ 1 INA- 2 INB+ 3 INB- 4 8 VCC QA QB GND MAX961–MAX964/MAX997/MAX999 MAX961 7 6 5 MAX962 7 6 5 SO/μMAX INA- 1 INA+ LEA 2 3 14 QA 13 QA 12 VCC INA- 1 INA+ 2 INB- 3 INB+ 4 INC- 5 INC+ 6 IND- 7 IND+ 8 SO/μMAX 16 N.C. 15 QA 14 QB N.C. 1 IN- 2 IN+ 3 GND 4 8 SHDN VCC Q N.C. MAX997 7 6 5 GND 4 LEB 5 INB- 6 INB+ 7 MAX963 11 GND 10 QB 9 8 QB SHDN MAX964 13 VCC 12 GND 11 QC 10 QD 9 SHDN SO/μMAX SO SO/QSOP ___________________Chip Information MAX961/MAX962 TRANSISTOR COUNT: 286 MAX963/MAX964 TRANSISTOR COUNT: 607 MAX997/MAX999 TRANSISTOR COUNT: 142 ______________________________________________________________________________________ 11 Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators MAX961–MAX964/MAX997/MAX999 Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 8LUMAXD.EPS 8 4X S 8 INCHES DIM A A1 A2 b c D e E H MIN 0.002 0.030 MAX 0.043 0.006 0.037 MILLIMETERS MAX MIN 0.05 0.75 1.10 0.15 0.95 Ø0.50±0.1 0.6±0.1 E H 1 0.6±0.1 1 D L α S BOTTOM VIEW 0.014 0.010 0.007 0.005 0.120 0.116 0.0256 BSC 0.120 0.116 0.198 0.188 0.026 0.016 6° 0° 0.0207 BSC 0.25 0.36 0.13 0.18 2.95 3.05 0.65 BSC 2.95 3.05 4.78 5.03 0.41 0.66 0° 6° 0.5250 BSC TOP VIEW A2 A1 A e c b L α SIDE VIEW FRONT VIEW PROPRIETARY INFORMATION TITLE: PACKAGE OUTLINE, 8L uMAX/uSOP APPROVAL DOCUMENT CONTROL NO. REV. 21-0036 J 1 1 12 ______________________________________________________________________________________ Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) QSOP.EPS MAX961–MAX964/MAX997/MAX999 ______________________________________________________________________________________ 13 Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators MAX961–MAX964/MAX997/MAX999 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) SOICN .EPS INCHES DIM A A1 B C e E H L MAX MIN 0.069 0.053 0.010 0.004 0.014 0.019 0.007 0.010 0.050 BSC 0.150 0.157 0.228 0.244 0.016 0.050 MILLIMETERS MAX MIN 1.35 1.75 0.10 0.25 0.35 0.49 0.19 0.25 1.27 BSC 3.80 4.00 5.80 6.20 0.40 1.27 N E H VARIATIONS: 1 INCHES MILLIMETERS MIN 4.80 8.55 9.80 MAX 5.00 8.75 10.00 N MS012 8 AA 14 AB 16 AC TOP VIEW DIM D D D MIN 0.189 0.337 0.386 MAX 0.197 0.344 0.394 D A e B A1 L C 0∞-8∞ FRONT VIEW SIDE VIEW PROPRIETARY INFORMATION TITLE: PACKAGE OUTLINE, .150" SOIC APPROVAL DOCUMENT CONTROL NO. REV. 21-0041 B 1 1 14 ______________________________________________________________________________________ Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) SOT-23 5L .EPS MAX961–MAX964/MAX997/MAX999 ______________________________________________________________________________________ 15 Single/Dual/Quad, Ultra-High-Speed, +3V/+5V, Beyond-the-Rails Comparators MAX961–MAX964/MAX997/MAX999 Revision History REVISION NUMBER 0 1 2 3 4 5 6 REVISION DATE 9/96 12/96 3/97 7/97 3/99 2/07 12/07 Initial release Added 8-pin µMAX packages. Correct minor errors. Added dual and quad MAX963/MAX964 packages. Added new MAX997 and MAX999 parts. New wafer fab/process change to CB20. Update specifications and TOCs. Added new Current into Input Pins in the Absolute Maximum Ratings. Added new automotive grade MAX999AAUK part and specifications. DESCRIPTION PAGES CHANGED — 1, 2, 3 1, 2, 3 1, 2, 3 2, 3, 4, 5, 6 2 1, 2, 3 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2008 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.