19-0129; Rev. 3; 7/94 Single/Dual/Quad High-Speed, Ultra Low-Power, Single-Supply TTL Comparators Because they are micropower, high-speed comparators that operate from a single +5V supply and include built-in hysteresis, these devices replace a variety of older comparators in a wide range of applications. MAX907/MAX908/MAX909 outputs are TTL compatible, requiring no external pull-up circuitry. All inputs and outputs can be continuously shorted to either supply rail without damage. These easy-to-use comparators incorporate internal hysteresis to ensure clean output switching even when the devices are driven by a slow-moving input signal. The MAX909 features complementary outputs and an output latch. A separate supply pin for extending the analog input range down to -5V is also provided. The dual MAX907 and single MAX909 are available in 8-pin DIP and small-outline packages, and the quad MAX908 is available in 14-pin DIP and small-outline packages. These comparators are ideal for single +5V-supply applications that require the combination of high speed, precision, and ultra-low power dissipation. _______________________Applications ___________________________Features ♦ 40ns Propagation Delay ♦ 700µA (3.5mW) Supply Current per Comparator ♦ Single 4.5V to 5.5V Supply Operation (or ±5V, MAX909 only) ♦ Wide Input Range Includes Ground (or -5V, MAX909 only) ♦ Low, 500µV Offset Voltage ♦ Internal Hysteresis Provides Clean Switching ♦ TTL-Compatible Outputs (Complementary on MAX909) ♦ Input and Output Short-Circuit Protection ♦ Internal Latch (MAX909 only) ______________Ordering Information PART TEMP. RANGE MAX907CPA 0°C to +70°C 8 Plastic DIP MAX907CSA 0°C to +70°C 8 SO MAX907C/D 0°C to +70°C Dice* MAX907EPA -40°C to +85°C 8 Plastic DIP MAX907ESA -40°C to +85°C 8 SO MAX907MJA -55°C to +125°C 8 CERDIP Ordering Information continued on last page. * Dice are specified at +25°C, DC parameters only. _________________Pin Configurations TOP VIEW OUTA 1 8 V+ INA- 2 7 OUTB INA+ 3 6 INB- GND 4 5 INB+ High-Speed V/F Converters Line Receivers Threshold Detectors/Discriminators MAX907 DIP/SO Battery-Powered Systems High-Speed A/D Converters PIN-PACKAGE OUTA 1 14 OUTD INA- 2 13 IND- INA+ 3 V+ 4 12 IND+ MAX908 11 GND High-Speed Sampling Circuits INB+ Zero Crossing Detectors INB- 6 9 INC- OUTB 7 8 OUTC 5 10 INC+ DIP/SO Pin Configurations continued on last page. ________________________________________________________________ Maxim Integrated Products Call toll free 1-800-998-8800 for free samples or literature. 1 MAX907/MAX908/MAX909 _______________General Description The MAX907/MAX908/MAX909 dual, quad, and single high-speed, ultra low-power voltage comparators are designed for use in systems powered from a single +5V supply; the MAX909 also accepts dual ±5V supplies. Their 40ns propagation delay (with 5mV input overdrive) is achieved with a power consumption of only 3.5mW per comparator. The wide input commonmode range extends from 200mV below ground (below the negative supply rail for the MAX909) to within 1.5V of the positive supply rail. MAX907/MAX908/MAX909 Single/Dual/Quad High-Speed, Ultra Low-Power, Single-Supply TTL Comparators ABSOLUTE MAXIMUM RATINGS Positive Supply Voltage (V+ to GND) . . . . . . . . . . . . . . . . . . . . . . . . +7V Negative Supply Voltage (V- to GND, MAX909 only) . . . . . . . . . -7V Differential Input Voltage MAX907/MAX908 . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to (V+ + 0.3V) MAX909 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (V- - 0.3V) to (V+ + 0.3V) Common-Mode Input Voltage MAX907/MAX908 . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to (V+ + 0.3V) MAX909 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (V- - 0.3V) to (V+ + 0.3V) Latch Input Voltage (MAX909 only) . . . . . . . . . -0.3V to (V+ + 0.3V) Input/Output Short-Circuit Duration to V+ or GND . . . Continuous Continuous Power Dissipation (TA = +70°C) 8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) . . . 727mW 8-Pin SO (derate 5.88mW/°C above +70°C) . . . . . . . . . . . 471mW 8-Pin CERDIP (derate 8.00mW/°C above +70°C) . . . . . . 640mW 14-Pin Plastic DIP (derate 10.00mW/°C above +70°C) . . .800mW 14-Pin SO (derate 8.33mW/°C above +70°C) . . . . . . . . . . 667mW 14-Pin CERDIP (derate 9.09mW/°C above +70°C) . . . . 727mW Operating Temperature Ranges: MAX90_C_ _ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to +70°C MAX90_E_ _ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C MAX90_MJ_ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - 55°C to +125°C Storage Temperature Range . . . . . . . . . . . . . . . . . . . -65°C to +160°C Lead Temperature (soldering, 10sec). . . . . . . . . . . . . . . . . . . . +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 (V+ = 5V, TA = +25°C; MAX909 only: V- = 0V, VLATCH = 0V; unless otherwise noted.) SYMBOL VTRIP+ TYP MAX UNITS Positive Trip Point PARAMETER (Note 1) CONDITIONS 2 4 mV Negative Trip Point VTRIP- (Note 1) -2 -4 mV Input Offset Voltage VOS 0.5 2.0 mV 100 300 nA 25 50 nA Input Bias Current IB (Note 2) VCM = 0V, VIN = VOS Input Offset Current IOS VCM = 0V, VIN = VOS MIN MAX907/908/909 -0.2 V+ - 1.5 MAX909 only: V- = -5V -5.2 V+ - 1.5 VCMR (Notes 3, 4) Common-Mode Rejection Ratio CMRR (Notes 4, 5) 50 100 µV/V Power-Supply Rejection Ratio PSRR VOH (Notes 4, 6) ISOURCE = 100µA 50 100 µV/V Input Voltage Range Output High Voltage Output Low Voltage VOL 0.3 ISINK = 8mA 0.4 0.7 1.0 MAX909 1.2 1.8 (Note 7) Negative Supply Current I- MAX909 only: V- = -5V (Note 8) MAX907/MAX908 Output Rise Time tr MAX909 VOUT = 0.4V to 2.4V, CL = 10pF Output Fall Time tf VOUT = 2.4V to 0.4V, CL = 10pF 2 V 0.4 MAX907/MAX908 I+ PD 3.5 ISINK = 3.2mA Positive Supply Current per Comparator Power Dissipation per Comparator 3.0 V 60 100 3.5 5.5 6 10 V mA µA mW 12 ns 6 ns _______________________________________________________________________________________ Single/Dual/Quad High-Speed, Ultra Low-Power, Single-Supply TTL Comparators MAX907/MAX908/MAX909 ELECTRICAL CHARACTERISTICS (continued) (V+ = 5V, TA = +25°C; MAX909 only: V- = 0V, VLATCH = 0V; unless otherwise noted.) PARAMETER Propagation Delay Differential Propagation Delay SYMBOL TYP MAX UNITS tPD+, tPD- VIN = 100mV, VOD = 5mV, (Note 9) CONDITIONS MIN 40 50 ns ∆tPD VIN = 100mV, VOD = 5mV, (Note 10) 1 ns MAX909 only: VIN = 100mV, VOD = 5mV, (Note 11) 2 ns Propagation Delay Skew tPDskew Latch Input Voltage High VIH (Note 12) Latch Input Voltage Low VIL (Note 12) 0.8 V IIH, IIL (Note 12) 20 µA Latch Setup Time ts (Note 12) 2 ns Latch Hold Time th (Note 12) 2 ns Latch Input Current 2.0 V ELECTRICAL CHARACTERISTICS (V+ = 5V, TA = TMIN to TMAX; MAX909 only: V- = 0V, VLATCH = 0V; unless otherwise noted.) SYMBOL VTRIP+ TYP MAX UNITS Positive Trip Point (Note 1) 2 5 mV Negative Trip Point VTRIP- (Note 1) -2 -5 mV Input Offset Voltage VOS (Note 2) 1 3 mV PARAMETER CONDITIONS MIN Input Bias Current IB VCM = 0V, VIN = VOS 200 500 nA Input Offset Current IOS VCM = 0V, VIN = VOS 50 100 nA Common-Mode Rejection Ratio CMRR MAX907/908/909 C/E temp. ranges MAX909 only, (Notes 3, 4) V- = -5V MAX907/908/909 M temp. range MAX909 only, (Notes 3, 4) V- = -5V (Notes 4, 5) Power-Supply Rejection Ratio PSRR (Notes 4, 6) Input Voltage Range Output High Voltage Output Low Voltage VCMR VOH VOL ISOURCE = 100µA -5.2 V+ - 1.5 -0.1 V+ - 1.5 -5.1 2.8 V+ - 1.5 200 µV/V 75 200 µV/V 3.5 ISINK = 8mA 0.4 0.8 1.2 MAX909 1.2 2.0 Negative Supply Current I- MAX909 only: V- = -5V (Note 8) V 0.4 MAX907/MAX908 (Note 7) V 75 0.3 I+ PD V+ - 1.5 ISINK = 3.2mA Positive Supply Current per Comparator Power Dissipation per Comparator -0.2 100 200 MAX907/MAX908 4 7 MAX909 6 11 V mA µA mW _______________________________________________________________________________________ 3 MAX907/MAX908/MAX909 Single/Dual/Quad High-Speed, Ultra Low-Power, Single-Supply TTL Comparators ELECTRICAL CHARACTERISTICS (continued) (V+ = 5V, TA = TMIN to TMAX; MAX909 only: V- = 0V, VLATCH = 0V; unless otherwise noted.) PARAMETER Propagation Delay Differential Propagation Delay SYMBOL TYP MAX UNITS tPD+, tPD- VIN = 100mV, VOD = 5mV (Note 9) CONDITIONS MIN 45 70 ns ∆tPD VIN = 100mV, VOD = 5mV (Note 10) 2 ns MAX909 only: VIN = 100mV, VOD = 5mV (Note 11) 4 ns Propagation Delay Skew tPDskew Latch Input Voltage High VIH (Note 12) Latch Input Voltage Low VIL (Note 12) 0.8 V IIH, IIL (Note 12) 20 µA Latch Setup Time ts (Note 12) 4 ns Latch Hold Time th (Note 12) 4 ns Latch Input Current 2.0 V Trip Point is defined as the input voltage required to make the comparator output change state. The difference between upper (VTRIP+) and lower (VTRIP-) trip points is equal to the width of the input-referred hysteresis zone (VHYST). Specified for an input common-mode voltage (VCM) of 0V. See Figure 1. Note 2: Input Offset Voltage is defined as the center of the input-referred hysteresis zone. Specified for VCM = 0V. See Figure 1. Note 3: Inferred from the CMRR test. Note that a correct logic result is obtained at the output, provided that at least one input is within the VCMR limits. Note also that either or both inputs can be driven to the upper or lower absolute maximum limit without damage to the part. Note 4: Tested with V+ = 5.5V (and V- = 0V for MAX909). MAX909 also tested over the full analog input range (i.e., with V- = -5.5V). Note 5: Tested over the full input voltage range (VCMR). Note 6: Specified over the full tolerance of operating supply voltage: MAX907/MAX908 tested with 4.5V < V+ < 5.5V. MAX909 tested with 4.5V < V+ < 5.5V and with -5.5V < V- < 0V. Note 7: Positive Supply Current specified with the worst-case condition of all outputs at logic low (MAX907/MAX908), and with V+ = 5.5V. Note 8: Typical power specified with V+ = 5V; maximum with V+ = 5.5V (and with V- = -5.5V for MAX909). Note 9: Due to difficulties in measuring propagation delay with 5mV of overdrive in automatic test equipment, the MAX907/MAX908/MAX909 are sample tested to 0.1% AQL with 100mV input overdrive. Correlation tests show that the specification can be guaranteed if all other DC parameters are within the specified limits. VOS must be added to the overdrive voltage for low values of overdrive. Note 10: Differential Propagation Delay is specified as the difference between any two channels in the MAX907/MAX908 (both outputs making either a low-to-high or a high-to-low transition). Note 11: Propagation Delay Skew is specified as the difference between any single channel’s output low-to-high transition (tPD+) and high-to-low transition (tPD-), and also between the QOUT and QOUT transition on the MAX909. Note 12: Latch specifications apply to MAX909 only. See Figure 2. Note 1: 4 _______________________________________________________________________________________ Single/Dual/Quad High-Speed, Ultra Low-Power, Single-Supply TTL Comparators PROPAGATION DELAY vs. INPUT OVERDRIVE PROPAGATION DELAY vs. SOURCE IMPEDANCE 80 40 tPD+ tPD- 30 20 60 tPD+ tPD40 20 0 10 1 10 VOD = 5mV RS = 10Ω 60 tPD+ 50 tPD- 40 30 10 100 100 10k 1k 0 20 80 100 SOURCE IMPEDANCE (Ω) CAPACITIVE LOAD (pF) PROPAGATION DELAY vs. TEMPERATURE OUTPUT HIGH VOLTAGE vs. SOURCE CURRENT OUTPUT LOW VOLTAGE vs. SINK CURRENT VOD = 5mV RS = 10Ω CLOAD = 15pF VIN = 100mV 4.5 TA = -55°C 0.4 TA = +125°C 4.0 VOL (V) VOH (V) tPD+ tPD- 50 TA = +25°C TA = +25°C 0.3 TA = -55°C 3.5 40 -60 -40 -20 0 0.1 1 20 40 60 80 100 120 140 TA = +125°C 0.2 3.0 30 10 1000 100 0 2 4 6 8 10 TEMPERATURE (°C) ISOURCE (µA) ISINK (mA) MAX907 TOTAL POSITIVE SUPPLY CURRENT vs. POSITIVE SUPPLY VOLTAGE (OUTPUTS AT VOL) MAX907 TOTAL POSITIVE SUPPLY CURRENT vs. POSITIVE SUPPLY VOLTAGE (OUTPUTS AT VOH) MAX908 TOTAL POSITIVE SUPPLY CURRENT vs. POSITIVE SUPPLY VOLTAGE (OUTPUTS AT VOL) 2.0 TA = +125°C TA = +125°C TA = +125°C TA = +25°C TA = -55°C 0.5 3.0 TOTAL ICC (mA) 1.5 TOTAL ICC (mA) 1.5 TA = +25°C TA = -55°C 1.0 0.5 0 4 5 VCC (V) 6 7 8 TA = +25°C 2.0 TA = -55°C 1.0 0 0 3 12 4.0 2.0 1.0 120 0.5 VIN = 100mV 60 2 60 40 INPUT OVERDRIVE (mV) 5.0 70 PROPAGATION DELAY (ns) 70 VOD = 5mV CLOAD = 15pF PROPAGATION DELAY (ns) RS = 10Ω CLOAD = 15pF PROPAGATION DELAY (ns) PROPAGATION DELAY (ns) 50 TOTAL ICC (mA) PROPAGATION DELAY vs. CAPACITIVE LOAD 2 3 4 5 VCC (V) 6 7 8 2 3 4 5 6 7 8 VCC (V) _________________________________________________________________________________________________ 5 MAX907/MAX908/MAX909 __________________________________________Typical Operating Characteristics (V+ = 5V, TA = +25°C, unless otherwise noted.) ____________________________Typical Operating Characteristics (continued) (V+ = 5V, TA = +25°C, unless otherwise noted.) MAX908 TOTAL POSITIVE SUPPLY CURRENT vs. POSITIVE SUPPLY VOLTAGE (OUTPUTS AT VOH) MAX909 POSITIVE SUPPLY CURRENT vs. POSITIVE SUPPLY VOLTAGE 4.0 2.0 200 +125°C TA = -55°C TOTAL I- (µA) TA = +25°C TOTAL I+ (mA) TOTAL ICC (mA) V+ = +5V +125°C 3.0 2.0 MAX909 NEGATIVE SUPPLY CURRENT vs. NEGATIVE SUPPLY VOLTAGE V- = -5V TA = +125°C +25°C 1.0 -55°C 100 +25°C 1.0 -55°C 0 3 4 5 6 7 0 8 0 2 3 4 6 7 8 -1 -2 -3 -4 -5 -6 V- (V) INPUT VOLTAGE RANGE vs. TEMPERATURE MAX909 INPUT VOLTAGE RANGE vs. TEMPERATURE SHORT-CIRCUIT OUTPUT CURRENT vs. TEMPERATURE 5 VCMR+ 0 VCMR- INPUT VOLTAGE RANGE (V) 4 VCMR+ 4 V+ = +5V V- = -5V -5 VCMR- -1 20 40 60 80 100 120 140 TEMPERATURE (°C) OUTPUT SHORTED TO V+ (SINKING) 30 OUTPUT SHORTED TO GND (SOURCING) -60 -40 -20 0 TRIP POINT vs. TEMPERATURE INPUT BIAS CURRENT vs. TEMPERATURE 4 300 VOUT = 1.4V VCM = 0V VCM = 0V -0.5 2 VOS (mV) INPUT CURRENT (nA) VCM = 0V VIN = VOS 0 200 VTRIP+ 0 VTRIP-2 -4 100 20 40 60 80 100 120 140 TEMPERATURE (°C) 20 40 60 80 100 120 140 TEMPERATURE (°C) TEMPERATURE (°C) INPUT OFFSET VOLTAGE vs. TEMPERATURE -60 -40 -20 0 60 -60 -40 -20 0 20 40 60 80 100 120 140 0.5 -7 0 -6 -60 -40 -20 0 6 0 V+ (V) 5 INPUT VOLTAGE RANGE (V) 5 VCC (V) SHORT-CIRCUIT OUTPUT CURRENT (mA) 2 VOS (mV) MAX907/MAX908/MAX909 Single/Dual/Quad High-Speed, Ultra Low-Power, Single-Supply TTL Comparators -60 -40 -20 0 20 40 60 80 100 120 140 TEMPERATURE (°C) -60 -40 -20 0 20 40 60 80 100 120 140 TEMPERATURE (°C) ________________________________________________________________________________________________ Single/Dual/Quad High-Speed, Ultra Low-Power, Single-Supply TTL Comparators MAX907/MAX908 PROPAGATION DELAY (tPD-) (5mV OVERDRIVE) MAX907/MAX908 PROPAGATION DELAY (tPD+) (5mV OVERDRIVE) INPUT GND -5mV OVERDRIVE 5mV OVERDRIVE INPUT GND INPUT (20mV/div) INPUT (20mV/div) OUTPUT (500mV/div) OUTPUT (500mV/div) TTL THRESHOLD (1.4V) TTL THRESHOLD (1.4V) OUTPUT GND OUTPUT GND tPD- tPD+ TIME (10 /di ) MAX909 PROPAGATION DELAY (tPD+) (5mV OVERDRIVE) MAX909 PROPAGATION DELAY (tPD-) (5mV OVERDRIVE) 5mV OVERDRIVE INPUT GND INPUT (20mV/div) QOUT (1V/div) INPUT GND -5mV OVERDRIVE INPUT (20mV/div) QOUT (1V/div) 1.4V OUTPUT GND QOUT tPD+ 1.4V OUTPUT GND QOUT tPD SKEW tPD- tPD SKEW RESPONSE TO 10MHz SINE WAVE 20mVp-p 10MHz SINE WAVE INPUT COMPARATOR OUTPUT (1V/div) GND TIME (50ns/div) _________________________________________________________________________________________________ 7 MAX907/MAX908/MAX909 ____________________________Typical Operating Characteristics (continued) (V+ = 5V, TA = +25°C, unless otherwise noted.) MAX907/MAX908/MAX909 Single/Dual/Quad High-Speed, Ultra Low-Power, Single-Supply TTL Comparators ______________________________________________________________Pin Description PIN FUNCTION MAX908 1 1 OUTA 2 2 INA- Comparator A Inverting Input 3 3 INA+ Comparator A Noninverting Input 8 4 5 5 INB+ Comparator B Noninverting Input 6 6 INB- Comparator B Inverting Input 7 7 OUTB Comparator B Output 8 OUTC Comparator C Output 9 INC- Comparator C Inverting Input 10 INC+ Comparator C Noninverting Input GND Ground 12 IND+ Comparator D Noninverting Input 13 IND- Comparator D Inverting Input 14 OUTD 4 11 MAX909 NAME MAX907 1 6 V+ Comparator A Output Positive Supply Comparator D Output 2 IN+ Noninverting Input 3 IN- Inverting Input 4 V- Negative Supply or Ground 5 LE The latch is transparent when LE is low. The comparator output is stored when LE is high. 7 QOUT Comparator Output 8 QOUT Inverted Comparator Output _______________Detailed Description Timing Noise or undesired parasitic AC feedback cause most high-speed comparators to oscillate in the linear region (i.e., when the voltage on one input is at or near the voltage on the other input). The MAX907/MAX908/ MAX909 eliminate this problem by incorporating internal hysteresis. When the two comparator input voltages are equal, hysteresis effectively causes one comparator input voltage to move quickly past the other, thus taking the input out of the region where oscillation occurs. Standard comparators require that hysteresis be added through the use of external resistors. The MAX907/MAX908/MAX909’s fixed internal hysteresis eliminates these resistors (and the equations required to determine appropriate values). 8 Adding hysteresis to a comparator creates two trip points: one for the input voltage rising and one for the input voltage falling (Figure 1). The difference between these two input-referred trip points is the hysteresis. Figure 1 illustrates the case where IN- is fixed and IN+ is varied. If the inputs were reversed, the figure would look the same, except the output would be inverted. The MAX909 includes an internal latch, allowing the result of a comparison to be stored. If LE is low, the latch is transparent (i.e., the comparator operates as though the latch is not present). The state of the comparator output is stored when LE is high. See Figure 2. Note that the MAX909 can be operated with V- connected to ground or to a negative supply voltage. The MAX909’s input range extends from (V- - 0.2V) to (V+ - 1.5V). _______________________________________________________________________________________ Single/Dual/Quad High-Speed, Ultra Low-Power, Single-Supply TTL Comparators MAX907/MAX908/MAX909 VTRIP+ VHYST VTRIP- VIN+ V + VTRIPVOS = TRIP+ 2 LE 1.4V VIN- = 0V 0 VOS VOH COMPARATOR OUTPUT DIFFERENTIAL INPUT VOLTAGE Figure 1. Input and Output Waveforms, Noninverting Input Varied __________Applications Information COMPARE ts th VOD VIN VOH VOL LATCH 3V tPD+ OUTPUT 1.4V (QOUT) VOL tSKEW VOH OUTPUT (QOUT) 1.4V VOL Circuit Layout Because of the MAX907/MAX908/MAX909’s high gain bandwidth, special precautions must be taken to realize the full high-speed capability. A printed circuit board with a good, low-inductance ground plane is mandatory. Place the decoupling capacitor (a 0.1µF ceramic capacitor is a good choice) as close to V+ as possible. Pay close attention to the decoupling capacitor’s bandwidth, keeping leads short. Short lead lengths on the inputs and outputs are also essential to avoid unwanted parasitic feedback around the comparators. Solder the device directly to the printed circuit board instead of using a socket. Figure 2. MAX909 Timing Diagram Battery-Operated Infrared Data Link Figure 4's circuit allows reception of infrared data. The MAX403 converts the photodiode current to a voltage, and the MAX907 determines whether the amplifier output is high enough to be called a “1”. The current consumption of this circuit is minimal: The MAX403 and MAX907 require typically 250µA and 700µA, respectively. Overdriving the Inputs The inputs to the MAX907/MAX908/MAX909 may be driven beyond the voltage limits given in the Absolute Maximum Ratings, as long as the current flowing into the device is limited to 25mA. However, if the inputs are overdriven, the output may be inverted. The addition of an external diode prevents this inversion by limiting the input voltage to 200mV to 300mV below ground (see Figure 3). _______________________________________________________________________________________ 9 MAX907/MAX908/MAX909 Single/Dual/Quad High-Speed, Ultra Low-Power, Single-Supply TTL Comparators 10pF 1M VCLAMP = -200mV TO -300mV 1/2 MAX907 +5V +5V 0.1µF MAX403 2 7 6 SIEMENS BP-104 PHOTODIODE 3 ISRC 3 1 4 100k 47k 2 100k +5V V- 0.1µF 8 4 DATA MAX907 1000pF 1000pF Figure 3. Schottky Clamp for Input Driven Below Ground 10 Figure 4. Battery-Operated Infrared Data Link Consumes Only 1mA ______________________________________________________________________________________ Single/Dual/Quad High-Speed, Ultra Low-Power, Single-Supply TTL Comparators TOP VIEW _Ordering Information (continued) PART TEMP. RANGE MAX908CPD 0°C to +70°C 14 Plastic DIP PIN-PACKAGE 14 SO MAX908CSD 0°C to +70°C 8 QOUT MAX908EPD -40°C to +85°C 2 7 QOUT MAX908ESD -40°C to +85°C 14 SO IN- 3 6 GND MAX908MJD -55°C to +125°C 14 CERDIP V- 4 5 LE V+ 1 IN+ MAX909 DIP/SO 14 Plastic DIP MAX909CPA 0°C to +70°C 8 Plastic DIP MAX909CSA 0°C to +70°C 8 SO MAX909C/D 0°C to +70°C Dice* MAX909EPA -40°C to +85°C 8 Plastic DIP MAX909ESA -40°C to +85°C 8 SO MAX909MJA -55°C to +125°C 8 CERDIP * Dice are specified at +25°C, DC parameters only. ______________________________________________________________________________________ 11 MAX907/MAX908/MAX909 ____Pin Configurations (continued) MAX907/MAX908/MAX909 Single/Dual/Quad High-Speed, Ultra Low-Power, Single-Supply TTL Comparators __________________________________________________________Chip Topographies MAX907 MAX909 V+ INB- INB+ IN+ QOUT IN- QOUT OUTB GND V+ 0.051" (1.30mm) 0.057" (1.45mm) GND OUTA V- INA- LE INA+ 0.050" (1.27mm) 0.055" (1.40mm) TRANSISTOR COUNT: 95; TRANSISTOR COUNT: MAX907:180 MAX908:360 SUBSTRATE CONNECTED TO V-. SUBSTRATE CONNECTED TO GND. 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. 12 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © 1994 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.