ABSOLUTE MAXIMUM RATINGS Supply Voltage ( )...+6V All Other Pins V to ( + 0.3V) Duration of Output Short Circuit to _ or...continuous Continuous

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1 ; Rev 1; 11/98 µ µ µ µ µ PART MAX975ESA MAX975EUA MAX977ESD TEMP. RANGE -40 C to +85 C -40 C to +85 C -40 C to +85 C PIN-PACKAGE 8 SO 8 µmax 14 SO MAX977EEE -40 C to +85 C 16 QSOP IN+ HIGH SPEED ENABLE MAX975 LP OUT TRANSITION MONITOR IN- LOW POWER ENABLE STAT TIMING CIRCUIT STO Maxim Integrated Products 1

2 ABSOLUTE MAXIMUM RATINGS Supply Voltage ( )...+6V All Other Pins V to ( + 0.3V) Duration of Output Short Circuit to _ or...continuous Continuous Power Dissipation (T A = +70 C) 8-Pin SO (derate 5.88mW/ C above +70 C)...471mW 8-Pin µmax (derate 4.10mW/ C above +70 C)...330mW 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 14-Pin SO (derate 8.33mW/ C above +70 C)...667mW 16-Pin QSOP (derate 8.33mW/ C above +70 C)...667mW Operating Temperature Range C to +85 C Storage Temperature Range C to +150 C Lead Temperature (soldering, 10sec) C ( = +2.7V to +5.25V, specifications are for high-speed mode, T A = -40 C to +85 C, unless otherwise noted. Typical values are at T A = +25 C.) (Note 1) PARAMETER POWER SUPPLY Supply-Voltage Operating Range Supply Current Per Comparator Power-Supply Rejection Ratio COMPARATOR S Common-Mode Voltage Range Input Offset Voltage (Note 3) SYMBOL I CC PSRR CONDITIONS High-speed mode Auto-standby/low-power modes SO µmax/qsop V CM = 1V, High-speed mode 2.7V 5.25V Low-power mode MIN TYP MAX V CMR (Note 2) V V CM = 1V, = 5V High-speed mode, T A = +25 C +0.2 ±2 High-speed mode, T A = T MIN to T MAX ±3 Auto-standby/ SO ±1 ±5 low-power modes, T A = T MIN to T MAX µmax/qsop ±1 ±7 UNITS V µa db mv Input-Referred Hysteresis V HYS V CM = 1V, = 5V (Note 4) SO µmax/qsop mv SO High-speed mode Input Bias Current I B µmax/qsop na Auto-standby/low-power modes -5 Input Offset Current I OS ±20 ±100 na Input Capacitance C IN 3 pf SO Common-Mode -0.2V V High-speed mode CMRR CM µmax/qsop 54 Rejection Ratio - 1.2V db Low-power mode 82 2

3 ELECTRICAL CHARACTERISTICS (continued) ( = +2.7V to +5.25V, specifications are for high-speed mode, T A = -40 C to +85 C, unless otherwise noted. Typical values are at T A = +25 C.) (Note 1) PARAMETER DIGITAL S LP Input Voltage High LP Input Voltage Low LP Fall Time LP Input Current STO_ Input Voltage Low STO_ Source Current DIGITAL S OUT_ Output Voltage High OUT_ Output Voltage Low Propagation Delay, Low to High (Note 6) SYMBOL V LPIH V LPIL t LP I LPB V CIL I STO V OH V OL I SOURCE = 2mA, all modes I SINK = 2mA, all modes C LOAD = 10pF, = 5V CONDITIONS 0.7x /2 V / x V (Note 5) 10 µs 0.01 ±1 µa /2 0.3x V = 3V 0.15 µa High-speed mode, overdrive = 5mV Low-power mode, overdrive = 10mV MIN TYP MAX UNITS V V ns µs Propagation Delay, High to Low (Note 6) C LOAD = 10pF, = 5V High-speed mode, overdrive = 5mV Low-power mode, overdrive = 10mV ns µs Propagation-Delay Skew (Note 6) t SKEW C LOAD = 10pF 2 ns Propagation-Delay Matching t PD MAX977 only, C LOAD = 10pF 1 ns Rise/Fall Time C LOAD = 10pF, = 5.0V High-speed mode 1.6 Low-power mode 1.6 ns STAT_ Output Voltage High V SH I SOURCE = 3mA, all modes V STAT_ Output Voltage Low V SL I SINK = 400µA, all modes 0.4 V Note 1: The MAX975EUA is 100% production tested at T A = +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, as long as the other input is within the specified common-mode input voltage range. Note 3: is defined as the mean of trip points. The trip points are the extremities of the differential input voltage required to make the comparator output change state (Figure 1). Note 4: The difference between the upper and lower trip points is equal to the width of the input-referred hysteresis zone (Figure 1). Note 5: Guaranteed by design. The LP pin is sensitive to noise. If fall times larger than 10µs are expected, bypass LP to ground using a 0.1µF capacitor. Note 6: Propagation delay is guaranteed by design. For low-overdrive conditions, is added to the overdrive. The following equation defines propagation-delay skew: t SKEW = -. 3

4 ELECTRICAL CHARACTERISTICS (continued) ( = +2.7V to +5.25V, specifications are for high-speed mode, T A = -40 C to +85 C, unless otherwise noted. Typical values are at T A = +25 C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS AUTO-STANDBY/LOW-POWER TIMING (Note 7; Figure 2) Auto-Standby Timeout t ASB (Note 8) ms Auto-Standby Enable Time t ASBE (Note 9) 3 µs Auto-Standby Wake-Up Time t ASD 10mV overdrive (Note 10) 2 4 µs Auto-Standby Wake-Up Input or LP Pulse Width Auto-Standby Comparator Disable Low-Power Enable Time High-Speed Enable Time Low-Power Comparator Disable Low-Power STAT_ High t PWD t ASCD t LPE t HSE t LPCD t LPSH 10mV overdrive (Note 11) (Note 12) (Note 13) 3 µs (Note 14) µs (Note 15) 0.7 µs (Note 16) 20 ns µs µs Note 7: Timing specifications are guaranteed by design. Note 8: Set by 1000pF external capacitor at the STO_ pin. t ASB is defined as the time from last input transition to STAT_ = high. Does not include time to go into standby condition (t ASBE). Note 9: t ASBE is defined as the time from when STAT_ goes high to when the supply current drops to 5µA. Note 10: t ASD is defined as the time from the last input transition to when STAT_ goes low. The comparator is in high-speed mode before STAT_ is low. Note 11: t PWD is defined as the minimum input or LP pulse width to trigger fast-mode operation from auto-standby. Note 12: t ASCD is defined as the time from the last input transition to when the supply current increases to 300µA. Note 13: t LPE is defined as the time from when LP is driven high to when the supply current drops to 5µA. Note 14: t HSE is defined as the time from when LP goes low to when STAT goes low. The comparator is in high-speed mode before STAT_ is low. Note 15: t LPCD is defined as the time from when LP goes low to when the supply current increases to 300µA. Note 16: t LPSH is defined as the time from when LP goes high to when STAT_ goes high. 4

5 ( = 3.0V, T A = +25 C, unless otherwise noted.) OFFSET VOLTAGE (mv) LOW-POWER OFFSET VOLTAGE vs. TEMPERATURE = 3V MAX SUPPLY CURRENT PER COMPARATOR (µa) SUPPLY CURRENT PER COMPARATOR vs. TRANSITION FREQUENCY HIGH-SPEED MODE LOW-POWER MODE k 0.1k 1k 10k 100k 1M 10M 100M TRANSITION FREQUENCY (khz) MAX BIAS CURRENT (na) HIGH-SPEED BIAS CURRENT vs. TEMPERATURE = 3V = 5V -170 MAX BIAS CURRENT (na) LOW-POWER BIAS CURRENT vs. TEMPERATURE = 5V = 3V 3.0 MAX TRIP POINTS/OFFSET VOLTAGE (mv) HIGH-SPEED VOLTAGE TRIP POINTS/ OFFSET VOLTAGE vs. TEMPERATURE = 5V V TRIP+ V TRIP MAX TRIP POINTS/OFFSET VOLTAGE (mv) HIGH-SPEED VOLTAGE TRIP POINTS/ OFFSET VOLTAGE vs. TEMPERATURE = 3V V TRIP+ V TRIP MAX PROPAGATION DELAY (ns) LOW-POWER PROPAGATION DELAY vs. CAPACITIVE LOAD = 5V = 3V = 3V = 5V t PD + 50mV OVERDRIVE CAPACITIVE LOAD (pf) MAX PROPAGATION DELAY (ns) LOW-POWER PROPAGATION DELAY vs. OVERDRIVE = 5V = 3V = 3V = 5V C LOAD =15pF OVERDRIVE (mv) MAX TIMEOUT (ms) AUTO-STANDBY TIMEOUT vs. TEMPERATURE = 5V = 3V MAX

6 ( = 3.0V, T A = +25 C, unless otherwise noted.) TIMEOUT (µs) PROPAGATION DELAY (ns) SUPPLY CURRENT (µa) AUTO-STANDBY TIMEOUT vs. TIMEOUT CAPACITOR CAPACITANCE (pf) HIGH-SPEED PROPAGATION DELAY vs. TEMPERATURE ( = 5V) C LOAD = 15pF V OD = 50mV HIGH-SPEED SUPPLY CURRENT PER COMPARATOR vs. TEMPERATURE ( = 3V) OUT_ = HIGH OUT_ = LOW 100 MAX MAX MAX VOLTAGE (V) PROPAGATION DELAY (ns) SUPPLY CURRENT (µa) HIGH VOLTAGE vs. SOURCE CURRENT T A = +85 C = 3V T A = -40 C 0.5 T A = +25 C SOURCE CURRENT (ma) HIGH-SPEED PROPAGATION DELAY vs. TEMPERATURE ( = 3V) C LOAD = 15pF V OD = 50mV STANDBY/LOW-POWER SUPPLY CURRENT PER COMPARATOR vs. TEMPERATURE ( = 5V) OUT_ = LOW OUT_ = HIGH 1.5 MAX MAX MAX VOLTAGE (V) SUPPLY CURRENT (µa) SUPPLY CURRENT (µa) = 3V LOW VOLTAGE vs. SINK CURRENT T A = +85 C T A = +25 C T A = -40 C SINK CURRENT (ma) HIGH-SPEED SUPPLY CURRENT PER COMPARATOR vs. TEMPERATURE ( = 5V) OUT_ = HIGH OUT_ = LOW STANDBY/LOW POWER-SUPPLY CURRENT PER COMPARATOR vs. TEMPERATURE ( = 3V) OUT = LOW 2.0 OUT = HIGH 1.8 MAX MAX MAX

7 ( = 3.0V, T A = +25 C, unless otherwise noted.) PROPAGATION DELAY (ns) HIGH-SPEED PROPAGATION DELAY vs. CAPACITIVE LOAD C LOAD = 15pF V OD = 50mV = +3V t PDt PD+ = +5V CAPACITIVE LOAD (pf) MAX PROPAGATION DELAY (ns) HIGH-SPEED PROPAGATION DELAY vs. OVERDRIVE C LOAD = 15pF = +5V = +3V OVERDRIVE (mv) MAX PROPAGATION DELAY (ns) LOW-POWER PROPAGATION DELAY vs. TEMPERATURE ( = 3V) C LOAD = 15pF V OD = 50mV 200 MAX LOW-POWER PROPAGATION DELAY vs. TEMPERATURE ( = 5V) PROPAGATION DELAY t PD + HIGH-SPEED MODE ( = +3V) PROPAGATION DELAY (ns) C LOAD = 15pF V OD = 50mV MAX /2 1V/div ns/div MAX975/977 TOC23 PROPAGATION DELAY HIGH-SPEED MODE ( = +3V) PROPAGATION DELAY HIGH-SPEED MODE ( = +5V) /2 1V/div /2 2V/div 5ns/div MAX975/977 TOC24 5ns/div MAX975/977 TOC25 7

8 ( = 3.0V, T A = +25 C, unless otherwise noted.) /2 PROPAGATION DELAY HIGH-SPEED MODE ( = +5V) 2V/div /2 PROPAGATION DELAY LOW-POWER MODE ( = +3V) 1V/div 5ns/div MAX975/977 TOC26 100ns/div MAX975/977 TOC27 PROPAGATION DELAY LOW-POWER MODE ( = +3V) /2 1V/div 100ns/div MAX975/977 TOC28 PROPAGATION DELAY LOW-POWER MODE ( = +5V) PROPAGATION DELAY LOW-POWER MODE ( = +3V) /2 2V/div /2 2V/div 100ns/div MAX975/977 TOC29 100ns/div MAX975/977 TOC30 8

9 ( = 3.0V, T A = +25 C, unless otherwise noted.) 100kHz RESPONSE LOW-POWER MODE ( = +3V) 1V/div 100kHz RESPONSE LOW-POWER MODE ( = +5V) 2V/div 2µs/div MAX975/977 TOC31 2µs/div MAX975/977 TOC32 10MHz RESPONSE HIGH-SPEED MODE ( = +5V) 2V/div 20ns/div MAX975/977 TOC34 10MHz RESPONSE HIGH-SPEED MODE ( = +3V) MAX975 AUTO-STANDBY OPERATION I np +100mV -100mV 1V/div OUT 3V 0V I CC 250µA 0µA 20ns/div MAX975/977 TOC33 1ms/div C STO_ = 100pF MAX975/977 TOC35 9

10 MAX IN+ IN- STAT STO OUT LP µ MAX977 SOP QSOP 1, 8 1, 9 STOA, STOB µ 2, 9 3, , 10 3, 11 4, 5 A, B OUTA, OUTB 5, 12 6, 14 INB+, INA+ 6, 13 7, 15 INB-, INA- 7, 14 8, 16 STATB, STATA 12 N.C LP 10

11 LP STO_ µ µ _ L t ASB = C STO x 10µs/pF <t ASB L t ASB = C STO x 10µs/pF t ASB H L X H X X H V IN+ V HYST V TRIP+ V TRIP- COMPARATOR V OH V OL L L = V TRIP+ + V TRIP- 2 V IN- = 0 11

12 DIFFERENTIAL VOLTAGE OUT_ STAT_ I CC (TYP) V OH V OL 0V 300µA 3µA A t PDt PD+ t ASB t ASBE t ASCD t PWD t ASD t LPSH t LPCD LP t LPE t HSE µ µ µ µ µ µ µ 12

13 µ µ µ CMOS LOGIC R1 R D R2 R3 STAT STO_ OUT LOSS OF SIGNAL MAX975 13

14 V IN R3 82.1k, 1% R k, 1% MAX R1 100k, 1% /2 MAX /2 MAX C STOA 11 C STOB 0.1µF UNDERVOLTAGE POWER GOOD OVERVOLTAGE X-BAND DETECTOR 4.7k 3V 0.1µF STAT MAX975 LP STO 50Ω C STO 3V 1M WAKE-UP IRQ I/0 µp I/0 (PIN NUMBERS SHOWN ARE FOR QSOP PACKAGE) 0.1µF µ R2 + R3 = R1 x [V OTH / (V REF + V H ) - 1] R2 = (R1 + R2 + R3) x [(V REF - V H ) / V UTH ] - R1 R3 = (R2 + R3) - R2 V OTH = (V REF + V H ) x (R1 + R2 + R3) / R1 V UTH = (V REF - V H ) x (R1 + R2 + R3) / (R1 + R2) µ µ 14

15 TOP VIEW 1 8 LP STOA A STATA INA- STOA A OUTA STATA INA- INA+ OUTA 3 12 INA+ IN+ 2 7 OUT 4 MAX LP MAX975 IN MAX LP 5 12 N.C. STAT 4 5 STO INB+ INB- STATB OUTB B STOB INB+ INB- STATB OUTB B STOB SO/µMAX SO QSOP TRANSISTOR COUNT: 522 (MAX975) 1044 (MAX977) 15

16 QSOP.EPS 8LUMAXD.EPS 16 Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA (408) Maxim Integrated Products is a registered trademark of Maxim Integrated Products.

MAX985-994 DS.J

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