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| ELM742B Low voltage comparator General description ELM742B is low voltage and low power CMOS comparator which makes it easy to design power circuits; ELM742B is able to extend battery life because of single power source, low voltage supply operating range (Vdd +1.0V) and low power consumption also. With N-ch open drain output, ELM742B is able to introduce depletion transistors to differential input stages and drive TTL and CMOS logic IC. ELM742B also covers wide input voltage range (Vss+0.1V to Vdd-0.2V). Features * * * * * * Low voltage operation Low current consumption Operation voltage range Input voltage range Output stage Package : Vdd+1.0V : Typ. Idd = 0.6A (Vdd = 1.5V) : 1.0VVdd7.0V : Vss+0.1V to Vdd-0.2V : N-ch open drain : SOT-25 Application * Battery-operated devices * Micropower signal processing * Low voltage analog circuits Maximum absolute ratings Parameter Power supply voltage Input voltage Output voltage Output current Power dissipation Operating temperature Storage temperature Symbol Vdd Vin Vout Iout Pd Top Tstg Limit 10 Vss-0.3 to Vdd+0.3 10 30 300 -20 to +70 -55 to +125 Unit V V V mA mW C C Selection guide ELM742B-x Symbol a b Product version Taping direction B S : Refer to PKG file N : Refer to PKG file ELM742 B - x ab Pin configuration SOT-25 (TOP VIEW) Pin No. 1 2 3 4 5 Pin name INVDD IN+ OUT VSS 3 -1 ELM742B Low voltage comparator Electrical characteristics Parameter Power supply voltage Common-mode input voltage Input offset voltage Input current Output current Current consumption Symbol Vdd Vicr Vio-1 Vio-2 Iin Iout-1 Iout-2 Iss-1 Iss-2 Iss-3 Thl Response time Tlh Condition Vdd=1.0 to 7.0V Vdd=1.0 to 3.6V Vdd=1.0 to 7.0V Vdd=1.0 to 7.0V Vdd=1.0V, Vol=0.4V Vdd=1.5V, Vol=0.4V Vdd=1.5V, Vout:"L" Vdd=3.6V, Vout:"L" Vdd=7.0V, Vout:"L" RL=100k, CL=15pF Vdd=1.5V RL=100k, CL=15pF Vdd=1.5V Min. 1.0 Vss+0.1 Typ. Vss=0V, Top=25C Max. Unit Note 7.0 V Vdd-0.2 V 8 mV 12 mV 100 pA A 1 mA 1 2.0 A 1 8.0 A 1 35.0 A s s 2 2 30.0 0.6 50.0 0.8 0.6 4.5 20.0 60 40 Note 1 . Refer to typical operating characteristics. Note 2 . The relation between input and output is as follows. * Input a 100mV step signal with 0.75 as its center Marking SOT-25 No. a b c Mark A 0 to 9 0 to 9 Content ELM742B Lot No. Lot No. 3-2 ELM742B Low voltage comparator Typical operating characteristics Iss - Vdd 16 Vout = "L" 10 8 6 4 2 Iout - Vdd (Vol=0.4V) 12 ISS ( A) 8 4 Vout = "H" Iout (mA) 0 2 4 6 8 0 2 4 6 8 Vdd (V) Vdd (V) Thl, Tlh - Vdd 200 80 150 Thl, Tlh - T op 100 Thl Thl ,Tlh (s) Thl, Tlh (s) 60 Thl 40 50 Tlh 20 Tlh 0 0 2 4 6 -20 0 20 40 60 80 Vdd (V) T op ( ) 3 -3 |
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