MAX974 Maxim, MAX974 Datasheet
MAX974
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MAX974 Summary of contents
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... These micropower devices draw less than 4µA supply current over temperature (MAX971/MAX972/MAX981/MAX982), and include an internal 1.182V ±1% (MAX971/MAX973/ MAX974) or ±2% (MAX981–MAX984) voltage reference and programmable hysteresis. Ideal for single-supply applications, these devices operate from a single 2.5V to 11V supply (or ± ...
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... UCSP (derate 4.7mW/°C above +70°C) ........379mW 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— ...
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... V- = GND = 0V MIN A PARAMETER MAX9_2/MAX9_3, I Output Low Voltage MAX9_1/MAX9_4, I Output Leakage Current V REFERENCE (MAX9_1/MAX982/MAX9_3/MAX9_4 ONLY) MAX971/MAX973/ MAX974 Reference Voltage MAX981–MAX984 T Source Current C/E temp ranges T Sink Current C/E temp ranges Voltage Noise 100Hz to 100kHz ELECTRICAL CHARACTERISTICS—3V OPERATION ( GND = 0V, T ...
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... Note 1: The MAX972EBL is 100% tested at T Note 2: MAX974/MAX984 comparators work below 2.5V; see Low-Voltage Operation section for more details. Note 3: Low-to-high response time is the result of the 1M pullup and the 100pF capacitive load, based on three time constants. A faster response time is achieved with a smaller RC. ...
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... IN+ = (IN- + 100mV) 4.0 3 10V 3 1.5 140 -60 - 100 TEMPERATURE ( C) MAX9_4 SUPPLY CURRENT vs. LOW SUPPLY VOLTAGES 10 1 0.1 0.01 140 1.0 1.5 2.0 SINGLE-SUPPLY VOLTAGE (V) MAX971/MAX973/MAX974 REFERENCE VOLTAGE vs. TEMPERATURE 1.22 1.21 EXTENDED TEMP RANGE 1.20 COMMERCIAL 1.19 TEMP RANGE 1.18 1.17 1.16 1.15 1. -60 -40 - TEMPERATURE ( C) MAX982/MAX9_3 SUPPLY CURRENT vs. TEMPERATURE 5.0 4 ...
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Ultra-Low-Power, Open-Drain, Single/Dual-Supply Comparators ( GND = 0V +25°C, unless otherwise noted.) A MAX9_1/MAX972/MAX9_4 TRANSFER FUNCTION 5.0 +5V 4.5 10k 100k 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0 ...
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PIN MAX971/ MAX972 MAX982 MAX981 DIP/SO/ DIP/SO/ DIP/SO/ UCSP µMAX µMAX µMAX 1 — — — — — — 4 — — — 5 — — — — ...
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... Ultra-Low-Power, Open-Drain, Single/Dual-Supply Comparators PIN NAME MAX974 MAX984 1 OUTB 2 OUTA INA- 5 INA+ 6 INB- 7 INB+ 8 REF INC- 11 INC+ 12 IND- 13 IND+ 14 GND 15 OUTD 16 OUTC 8 _______________________________________________________________________________________ Pin Description (continued) FUNCTION Comparator B Open-Drain Output. Sinks current to GND. Comparator A Open-Drain Output. Sinks current to GND. ...
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... The inputs can be taken above and below the supply rails 300mV without damage. OUTB 8 (A3 (A2) INB+ 6 (C3) INB- 5 (B3) Figure 1c. MAX973/MAX983 Functional Diagram (Window Comparator) OUTB REF 6 HYST 5 Figure 1d. MAX974/MAX984 Functional Diagram MAX9_3 1 OUTA OUTB INA+ REF INB- HYST V- MAX9_4 ...
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... The internal bandgap voltage reference has an output of 1.182V above V-. Note that the REF voltage is referenced to V-, not to GND. Its accuracy is ±1% (MAX971/MAX973/MAX974) or ±2% (MAX981–MAX984) in the 0°C to +70°C range. The REF output is typically capable of sourcing 25µA and sinking 15µA. Do not bypass the REF output ...
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... HB twice the voltage between REF and HYST. The HYST input can be adjusted to a maximum voltage of REF and to a minimum voltage of (REF - 50mV). The maximum difference between REF and HYST (50mV) will therefore produce a 100mV (max) hysteresis band. ...
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Ultra-Low-Power, Open-Drain, Single/Dual-Supply Comparators 2) Select R1. The leakage current into INB- is normally under 1nA, so the current through R1 should exceed 100nA for the thresholds to be accurate. R1 values up to about 10M can be used, but ...
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... V INB V+ 10k OUTB 8 V INC LOW BATT V IND REF 6 20k HYST 5 V- 2.4M 2 Figure 7. Level Shifter: ±5V Input to Single-Ended 3.3V Output layout and 5V 3. MAX974 10k 5 INA+ MAX984 OUTA 2 4 INA- 10k 7 INB+ OUTB 1 6 INB- 10k 11 INC+ OUTC 16 10 INC- 10k 13 ...
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... Pin Configurations OUTA 1 8 OUTB MAX982 INA REF INB HYST DIP/SO/ MAX OUTB 1 16 OUTC OUTA 2 15 OUTD GND MAX974 INA IND+ MAX984 INA IND INB- INC+ INB INC- 8 REF 9 V- DIP/Narrow SO ...
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... MAX984CPE 16 Narrow SO MAX984CSE 16 Plastic Dip MAX984EPE 16 Narrow SO 8 Plastic Dip MAX984ESE ___________________Chip Information MAX971/MAX972/MAX973/MAX981/MAX982/MAX984 TRANSISTOR COUNT: 164 MAX974/MAX984 TRANSISTOR COUNT: 267 TEMP RANGE PIN-PACKAGE + + µMAX - + Plastic Dip - + +70 C ...
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... Ultra-Low-Power, Open-Drain, Single/Dual-Supply Comparators (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) 16 ______________________________________________________________________________________ Package Information ...
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... For the latest package outline information www.maxim-ic.com/packages.) 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. ...