19-0729: Rev. % 7/94 Genera! 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 sup- plies. Their 40ns propagation delay (with S5mV input overdrive) is achieved with a power consumption of only 3.5mW per comparator. The wide input common- mode range extends from 200mV below ground (below the negative supply rail for the MAX9039) to within 1.5V of the positive supply rail. Because they are micropower, high-speed compara- tors 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 compati- ble, requiring no external pull-up circuitry. All inputs and outputs can be continuously shorted to either sup- ply rail without damage. These easy-to-use compara- tors incorporate internal hysteresis to ensure clean out- put 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 -5Vis 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 Battery-Powered Systems High-Speed A/D Converters High-Speed V/F Converters Line Receivers Threshold Detectors/Discriminators High-Speed Sampling Circuits Zero Crossing Detectors MAAXIAA MAXIM Single/Dual/Quad High-Speed, Ultra Low-Power, Single-Supply TTL Comparators Features # 40ns Propagation Delay + 7OOpPA (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, 500pV Offset Voltage Internal Hysteresis Provides Clean Switching TTL-Com patible Outputs (Complementary on MAX909) @ Input and Output Short-Circuit Protection Internal Latch (MAX909 only) Ordering Information PART TEMP. RANGE PIN-PACK AGE MAX907CPA 0% to +70C 8 Plastic DIP MAXS07CSA 0% to +70C 8so0 MAxXs07C/D 0 to +70C Dice* MAX907 EPA -40C to +85C 8 Plastic DIP MAX907ESA -40C to +85C 8so MAXS07MJA -55C to +125C 8 CERDIP Ordering Information continued on last page. * Dice are specified at +25, DC parameters only. Pin Configurations TOP VIEW ._ QUTA [4 | re | vs INA- [2 | 7 | OUTB INA+ [3| aie INB- GND [4] Anam. 1] 5 | IN DIP/SO . OUTA [4 | h4] OuTD ina- [2 | Kp IND- INA+ a> 2 | IND+ ve 4] SAKova fi] eno INB+ > ia] INc+ INB- [al hi INC- outs [7| /@ | oure DIP/SO Pin Configurations continued on fast page. Call toll free 7-800-998-8800 for free samples or literature. Maxim Integrated Products 1 606XVW/806XVW/L0EXVNMAX907/MAX908/MAX909 Single/Dual/Quad High-Speed, Ultra Low-Power, Single-Supply TTL Comparators ABSOLUTE MAXIMUM RATINGS Positive Supply Voltage (V+ to GND) ..................... Continuous Power Dissipation (Ta = +70) Negative Supply Voltage (V- to GND, MAX909 only).. 8-Pin Plastic DIP (derate 9.09mW/C above +70C)...727mW Differential Input Voltage 8-Pin SO (derate 5.88mW/C above +70C)........... 471mWw MAX907/MAXG0B 0... eee eee -0.3 to (V+ + 0.3) 8-Pin CERDIP (derate 8.00mW/G above +70C)...... 640mW MAXG0G 00. eee (V- - 0.3V) to (V4 4 0.3V) 14-Pin Plastic DIP (derate 10.00mW/C above +70C) ...800mW Common-Mode Input Voltage 14-Pin SO (derate 8.33mW/C above +70C).......... 667mW MAX907/MAXS08 ... 00 eee eee -0.3V to (V+ + 0.3V) 14-Pin CERDIP (erate 9.09mW/C above +70C) ....727mW MAX90G 20. cece (V--0.3V) to (V+ + 0.34) Operating Temperature Ranges: Latch Input Voltage (MAX909 only)......... -0.3V to (V+ + 0.3V) MAXSO_Co neces 0% to +70% Input/Output Short-Circuit Duration to V+ or GND... Gontinuous MAX9O Foo... eee cece eect eee ee -40S to +85C MAXS30_MJ_ -55C to +125C Storage Temperature Range ................... -65C to +160C Lead Temperature (soldering, 10sec)..................05 +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 io absolute maximum rating conditions jor extended periods may affect device reliability. ELECTRICAL GHARACTERISTICS (V+ = 5V, Ta = +25C; MAX909 only: V- = OV, ViatcH = OV; unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Positive Trip Point VIRIP+ (Note 1) 2 4 mv Negative Trip Point VTAIP- (Note 1) 2 4 mv Input Cfiset Voltage Vos (Note 2) 05 2.0 mV Input Bias Current lp Vom = OV, Vin = Vos 100 300 nA Input Ctset Current los Vom = OV, Vin = Vos 25 50 nA MAX907/908/909 0.2 V4-41.5 Input Voltage Range Voma (Notes 3, 4) Vv MAXS09 only: V- = -5V | -5.2 V4-41.5 Common-Mode Rejection Ratio CMRR (Notes 4, 5) 50 100 pViv Power-Supply Rejection Ratio PSRR (Notes 4, 6) 50 100 pviv Output High Voltage VoH lsounce = 100pA 3.0 3.5 Vv Isin = 3.2mA 0.3 0.4 Gutput Low Voltage Vo- lsnx = @mA 04 Vv Positive Supply Current per le {Note 7) MAX907/MAX908 07 1.0 mA Comparator MAX909 12 18 Negative Supply Current I- MAX909 only: V- = -5V 60 100 HA Power Dissipation per Pp {Note 8) MAX907/MAX908 35 55 mW Comparator MAX909 6 10 OCutput Rise Time t Vout = 0.4Vto 2.4V, CL = 10pF 12 ns Output Fall Time t Vout = 2.4V to 0.4, C_ = 10pF 6 ns 2 MAAXLMASingle/Dual/Quad High-Speed, Ultra Low-Power, Single-Supply TTL Comparators ELECTRICAL CHARACTERISTICS (continued) (V+ = 5V, Ta = +25C; MAX909 only: V- = OV, VLatcH = OV: unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS . Vin = 100mV, Vop = 5mvV, Propagation Delay tep+ tpp- (Note 9} 40 50 ns . . . Vin = 100m, Vop = 5mV, Differential Propagation Delay Atpo (Note 10) 1 ns : MAX909 only: Vin = 100mV, Propagation Delay Skew tposkew Voo = 5mY, (Note 11) 2 ns Latch Input Voltage High Vin (Note 12) 2.0 Vv Latch Input Voltage Low VIL (Note 12) 08 Vv Latch Input Current Tin. Tie (Note 12) 20 HA Latch Setup Time ts (Note 12) 2 ns Latch Hold Time th (Note 12) 2 ns ELECTRICAL CHARACTERISTICS (V+ = 5V, Ta = Twin to Taax: MAX909 only: V- = OV, VLatcH = OV: unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Positive Trip Point VTRIP+ (Note 1) 2 5 mv Negative Trip Point Vrrip- (Note 1) 2 5 mv Input Ctfset Voltage Vos (Note 2) 1 3 mv Input Bias Current lb Vom = OV, Vin = Vos 200 500 nA Input Ctfset Current los Vem = OV, Vin = Vos 50 100 nA C/Etemp. | MAx907/908/909 -0.2 Ve -1.5 ranges MAX909 only, (Notes 3, 4) Ye = -5V -5.2 V4 -1.5 Input Voltage Range Voma v M temp. MAX907/908/909 -0.1 V+ -1.5 range MAX909 only, (Notes 3, 4) Ve = -5V -5.1 V4 - 15 Common-Mode Rejection Ratio CMRR (Notes 4, 5) 75 200 pV Power-Supply Rejection Ratio PSRR (Notes 4, 6) 75 200 pw Output High Voltage Vou Isounce = 100A 28 3.5 v Isink = 3.2mA 0.3 0.4 Gutput Low Volt vi Vv utput Low Voltage OL lane = BMA 4 iti MAX907/MAX908 0.8 1.2 Positive Supply Current per le (Note 7) mA Comparator MAxg09 1.2 2.0 Negative Supply Current I- MAXs09 only: V- = -5V 100 200 pA ae MAX907/MAX908 4 7 Power Dissipation per Comparator PD (Note 8) mw MAxg09 6 11 MAAXLAA 3 606XVW/806XVW/L0EXVNMAX907/MAX908/MAX909 Single/Dual/Quad High-Speed, Ultra Low-Power, Single-Supply TTL Comparators ELECTRICAL CHARACTERISTICS (continued) (V4 = 5V, Ta = Twin to Tax: MAX909 only: V- = OV, ViatcH = OV; unless otherwise noted.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS . Vin = 100mV, Vop = 5mV t tpp- Propagation Delay Pp+ tpp. (Note 9} 45 70 ns . . . Vin = 100mvV, Vop = 5mV At Differential Propagation Delay PD (Note 10) 2 ns . MAX909 only: Viy = 100mvV, Propagation Delay Skew tepskew Von = SmvV (Note 11) 4 ns Latch Input Voltage High Vin (Note 12) 2.0 Vv Latch Input Voltage Low VIL (Note 12) 08 Vv Latch Input Current ha, tie (Note 12) 20 HA Latch Setup Time ts (Note 12) 4 ns Latch Hold Time th (Note 12) 4 ns Note 1: Trip Point is defined as the input voltage required to make the comparator output change state. The ditlerence Note 2: Note 3: Note 4: Note 5: Note 6: Note 7: Note 3: Note 9: Note 10: Note 11: Note 12: between upper (VrAie+) and lower (Vrrip-) trip points is equal to the width of the input-reterred hysteresis zone (ViHysr). Specified for an input common-mode voltage (Vem) of OV. See Figure 1. Input Gfiset Voltage is defined as the center of the input-referred hysteresis zone. Specified for Vom = OV. See Figure 1. 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 Voma limits. Note also that either or both inputs can be driven to the upper or lower absolute maximum limit with- out damage to the part. Tested with V+ = 5.5V (and V- = OV for MAX909). MAX909 also tested over the full analog input range {i.., with V- = -5.5V). Tested over the full input voltage range (Vcma). Specified over the full tolerance of operating supply voltage: MAX907/MAX908 tested with 4.5V < V+ < 5.5V. MAxg09 tested with 4.5V < V+ < 5.5 and with -5.5V < V- < OV. Positive Supply Gurrent specified with the worst-case condition of all outputs at logic low (MAX907/MAX908), and with V+ = 5.5. Typical power specified with V+ = 5V; maximum with V+ = 5.5V (and with V- = -5.5V for MAX909). 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% AGL with 100m 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 over- drive voltage for low values of overdrive. Differential Propagation Delay is specified as the difference between any two channels in the MAX907/MAX908 (both out- puts making either a low-to-high or a high-to-low transition). Propagation Delay Skew is specified as the difference between any single channels output low-to-high transition (tpp+) and high-to-low transition (1pp-), and also between the QOUT and QOUT transition on the MAX909. Latch specifications apply to MAX809 only. See Figure 2. MAAXLMASingle/Dual/Quad High-Speed, Ultra Low-Power, Single-Supply TTL Comparators (V+ = 5V, Ta = +25 C, unless otherwise noted.) 50 40 30 PROPAGATION DELAY (ns) 20 70 50 PROPAGATION DELAY {ns} 40 30 20 TOTAL leg (mm A} PROPAGATION DELAY vs. INPUT OVERDRIVE Rg = 108 Coan = 15pF toot ~ tbo 1 10 100 INPUT OVERDRIVE {m ) PROPAGATION DELAY vs, TEMPERATURE Vog = 5mV Rg = 108 Sloan = 15pF -60 -40 -20 0 20 40 G0 8&0 100120 140 TEM PERATURE {C MAXgO7 TOTAL POSITIVE SUPPLY CURRENT vs. POSITIVE SUPPLY VOLTAGE (OUTPUTS AT q)} Tas +125C aa | Ty= 420C | | Ty = BEPC A 7 PROPAGATION DELAY (ns) Vou TOTAL leg (mA) PROPAGATION DELAY vs. SCURCE IMPEDANCE 80 T Von = 5m SLoay = 15pF /| a0 tpt / tho: 40 20 10 100 tk 10k SOURCE IMPEDANCE (22) OUTPUT HIGH VOLTAGE vs. SQUACE CURRENT 50 Viy= 100m 45 Ty= 125C ~..| 40 PTy=426C = _] Ty = 55C [~~ 35 ==] Po P... oY 30 1 10 100 1000 source HA) MAXSO7 TOTAL POSITIVE SUPPLY CURRENT vs. POSITIVE SUPPLY VOLTAGE (CUTPUTSAT Vpu} 20 Ty= +126C Ty = 425C 10 a= 85C O65 PROPAGATION DELAY (ns) Vo. [l TOTAL log (mA) 70 60 40 30 40 30 20 Typical Operating Characteristics PROPAGATION DELAY ys. CAPACITIVE LOAD Voy = Sm Rg = 1082 / tegt Leen Tepe ZO 20 40 80 80 100 120 CAPACITIVE LOAD (pF) OUTPUT LOW VOLTAGE vs, SINK CURRENT Viy= 1oom La Ty = 38C Ty= 425C A Ty=4125C 2 4 8 8 1 12 |sinu fA) MAXa08 TOTAL POSITIVE SUPPLY CURRENT vs. POSITIVE SUPPLY VOLTAGE (QUTPUTSAT o)) Ty = 1125C \| ee / Ty = 425C / Ty= BEC 606XVW/806XVW/L0EXVNMAX907/MAX908/MAX909 Single/Dual/Quad High-Speed, Ultra Low-Power, Single-Supply TTL Comparators Typical Operating Characteristics (continued) (V+ = 5V, Ta = +25 C, unless otherwise noted.) 40 ww o TOTAL Ig (mA) re INPLIT YOLTAGE RANGE () os 05 MAX08 TOTAL POSITIVE SUPPLY CURRENT vs. POSITIVE SUPPLY VOLTAGE (OUTPUTS AT Vp} Tye ti26C Tyo 425C a= 55C Vo (VI INPUT VOLTAGE RANGE ys. TEMPERATURE 60 -40 -20 0 20 40 60 80 100120 140 TEM PERATURE (C) INPUT OFFSET OLTAGE vs, TEMPERATURE T T I Vour=1 4 Voy = OV -60 -40 -20 0 20 40 60 80 100120140 TEMPERATURE (C) TOTAL |+ {mA} INPLIT VOLTAGE RANGE (] INPLIT CLIRRENT (nA) 20 300 200 100 MAxG09 POSITIVE SUPPLY CURRENT vs. POSITIVE SUPPLY VOLTAGE Ve = -8 4125C ee _ 425C BoC li 2 3 4 5 8 F very MAXSOS INPUT OLTAGE RANGE vs, TEMPERATURE 60 -40 -20 0 20 40 60 80 100 120140 TEM PERATUR EFC) INPUT BIAS CURRENT vs. TEMPERATURE P| Voy = Ov Vin = Vos N\ > [a re -60 -40 -20 0 20 40 80 80 100120140 TEM PERATUR Ee Gy TOTAL I- (uA) SHORT-CIRGUIT OLITPLIT GUIRRENT {rn A) Vos (rn) 200 100 60 30 MAXgO9 NEGATIVE SUPPLY CURRENT vs. NEGATIVE SUPPLY VOLTAGE V4+=45 +126C. 0 4 2 38 4 5 6 7 ve {V) SHOAT- CIRCUIT CUTPUT CURRENT vs, TEMPERATURE OUTPUT Leese SHORTED TO Leen Vi ESINKING) | oe] Y 7 Lat OUTPUT | SHORTED TO GND (SOURCING) \ -60 -40 -20 0 20 40 G0 80 100120140 TEMPERATURE (C) TRIP POINT vs. TEMPERATURE TT Veqy = 0 La Lae or Vrs - ~ Trp. Toten eee -60 -40 -20 0 20 40 GO 80 100120 140 TEMPERATURE (C) MAAXLMASingle/Dual/Quad High-Speed, Ultra Low-Power, Single-Supply TTL Comparators (V+ = 5V, Ta = +25 C, unless otherwise noted.) MAXS07/MAXS08 PROPAGATION DELAY (tpp+) (5mV OVERDRIVE) 5m V OVERDRIVE INPUT GND INPUT (20m) OUTPUT {500mVidiv} TTL THRESHOLD (1 4} OUTPUT GND aaa tpp+ > MAxs09 PROPAGATION DELAY (tpp+) (5mV OVERDRIVE) 5m OVERDRIVE INPUT GND INPUT (20mdiv) QOUT (War) 14 QUTPUT GND GOUT Typical Operating Characteristics (continued) MAX907/MAX908 PROPAGATION DELAY (tpp-) (Sm OVERDRIVE) INPUT GND INPUT (20mV/dlv} R OUTPUT (500mVidiv} TTL THRESHOLD (1 4} OUTPUT GND tep- | MAxXs09 PROPAGATION DELAY (tpp-} (SmV OVERDRIVE) INPUT GND ~_ -5m OVERDRIVE INPUT (20 mVidiv) QOUT (1Vidiyy 14v OUTPUT GOUT GND RESPONSE TO 10M Hz SINE WAVE 20mVp-p 10M Hz SINE WAVE INPUT COM PARATOR QUTPUT (Tea) GND TIME (50ns/div) MAAXLAA 606XVW/806XVW/L0EXVNMAX907/MAX908/MAX909 Single/Dual/Quad High-Speed, Ultra Low-Power, Single-Supply TTL Comparators Pin Description PIN NAME FUNCTION MAXs07 MAX903 MAxs09 1 1 OUTA Comparator A Output 2 2 INA- Comparator A Inverting Input 3 3 INA+ Comparator A Noninverting Input 8 4 1 V4 Positive Supply 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 Inverting Input 10 ING+ Comparator C Noninverting Input 4 11 6 GND Ground 12 IND+ Comparator D Noninverting Input 13 IND- Comparator D Inverting Input 14 OUTD Comparator D Quiput IN+ Noninverting Input IN- Inverting Input 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 inter- When the two comparator input volt- ages are equal, hysteresis effectively causes one com- parator 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/MAXSO09's fixed internal hysteresis eliminates these resistors (and the equations required nal hysteresis. to determine appropriate values). 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 |N- 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 com- parator outputis stored when LEis high. See Figure 2. Note that the MAX909 can be operated with V- con- nected to ground or to a negative supply voltage. The MAX909's input range extends from (V- - 0.2V) to (V+ - 1.5). MAAXLMASingle/Dual/Quad High-Speed, Single-Supply Ultra Low-Power, TTL Comparators ViRIPe COM PARATGR QUTPLT Figure 1. Input and Output Waveforms, Noninverting input Varied Applications Information Circuit Layout Because of the MAX907/MAX908/MAX909's high gain bandwidth, special precautions must be taken to real- ize the full high-speed capability. A printed circuit board with a good, low-inductance ground plane is mandatory. Place the decoupling capacitor (a 0.1pF ceramic capacitor is a good choice) as close to V+ as possible. Pay close attention to the decoupling capaci- tor's bandwidth, keeping leads short. Short lead lengths on the inputs and outputs are also essential to avoid unwanted parasitic feedback around the com- parators. Solder the device directly to the printed cir- cuit board instead of using a socket. Overdriving the inputs The inputs to the MAX907/MAX908/MAX3909 may be driven beyond the voltage limits given in the Absolute Maximum Aatings, 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 addi- tion of an external diode prevents this inversion by limit- ing the input voltage to 200mV to 300mV below ground (see Figure 3). MAAXLAA LATCH 3v LE Ves DIFFERENTIAL INPUT VOLTAGE Ve OUTPUT (cu 14 VoL Vv ap (QUT) 14V Vo. Figure 2. MAXS909 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 MAX807 determines whether the amplifier output is high enough to be called a1. The current consump- tion of this circuit is minimal: The MAX403 and MAX907 require typically 250A and 700A, respectively. 606XVW/806XVW/L0EXVNMAX907/MAX908/MAX909 Single/Dual/Quad High-Speed, Ultra Low-Power, Single-Supply TTL Comparators VecLame = -200rm TO-300m spc MAAXLAA 1/2 MAX907 Figure 3. Schottky Glamp for input Driven Below Ground 19 1OpF [a +5 MA AXLAA MAX403 2 a SIEMENS BP- 104 Ae "T PHOTOOIODE 3 4000pF -- Figure 4. Battery-Operated Infrared Data Link Consumes Only mA MAAXLMASingle/Dual/Quad High-Speed, Ultra Low-Power, Single-Supply TTL Comparators Pin Configurations (continued) TOP VIEW a ve [| noes (121 Gout IN+ [2 | 7 | aout In- [3 | ls | GND v [4] [5 | Le DIP/SO MAAXLAA _Ordering Information (continued) PART TEMP.RANGE _PIN-PACKAGE MAX908CPD OTto+70% 14 Plastic DIP MAXs08CSD O to +70 14 50 MAXS08EPD -40C to +85C 14 Plastic DIP MAxXg908ESD -40C to +85C 14 SO MAX908MJD 55C 10 4125C 14 CERDIP MAX909CPA 0 to +70C 8 Plastic DIP MAXS09CSA O to +70 850 MAxXs09C/D O to +70% Dice* MAXS09EPA -40C to +85C 8 Plastic DIP MAX909ESA -40C to +85C & SO MAXS09MJA 55C 10 4125O & CERDIP * Dice are specified at +25, DC parameters only. 11 606XVW/806XVW/L0EXVNMAX907/MAX908/MAX909 Single/Dual/Quad High-Speed, Ultra Low-Power, Single-Supply TTL Comparators Chip Topographies MAX907 MAX909 QoOUT OUTB QouT sv" 0.051" ve (145mm) (130mm) GND OUTA LE INA- IN A+ 0.050" 0.055" -_ (1.40mm} (1.27mm) TRANSISTOR COUNT: MAX@07: 180 TRANSISTOR COUNT: 95; MAX908: 360 SUBSTRATE CONNECTED TO .. SUBSTRATE CONNECTED TO GND. Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit paient licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice ai any time. 12 Maxim Infegrated Products, 120 San Gabrie! Drive, Sunnyvale, CA 94086 (408) 737-7600 1994 Maxim Integrated Products Printed USA AAAALAA js a registered trademark of Maxim Integrated Products.