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 • • • • • • ■Application Low voltage operation Low current consumption Operation voltage range Input voltage range Output stage Package : Vdd≥+1.0V : Typ. Idd = 0.6μA (Vdd = 1.5V) : 1.0V≤Vdd≤7.0V : Vss+0.1V to Vdd-0.2V : N-ch open drain : SOT-25 • 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 Product version b Taping direction ELM742 B - x ↑ ↑ a b B S : Refer to PKG file N : Refer to PKG file ■Pin configuration SOT-25 (TOP VIEW) 㪌 㪄 㪈 Pin No. 1 2 3 4 5 㪋 㪂 㪉 㪊 3 -1 Pin name INVDD IN+ OUT VSS 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=100kΩ, CL=15pF Vdd=1.5V RL=100kΩ, CL=15pF Vdd=1.5V Min. 1.0 Vss+0.1 Typ. 30.0 0.6 50.0 0.8 0.6 4.5 20.0 Vss=0V, Top=25°C Max. Unit Note 7.0 V Vdd-0.2 V 8 mV 12 mV 100 pA μA 1 mA 1 2.0 μA 1 8.0 μA 1 35.0 μA 60 μs 2 40 μs 2 Note 1 . Refer to typical operating characteristics. Note 2 . The relation between input and output is as follows. 㧑 㪫㪿㫃 * Input a 100mV step signal with 0.75 as its center ■Marking SOT-25 㪸 㪹 㪺 No. a b c Mark A 0 to 9 0 to 9 3-2 Content ELM742B Lot No. Lot No. 㪫㫃㪿 ELM742B Low voltage comparator ■Typical operating characteristics Iss - Vdd Iout - Vdd 10 16 Vout = "L" 8 Iout (mA) UU ( μA) ISS 12 8 4 2 4 6 6 4 2 Vout = "H" 0 (Vol=0.4V) 0 8 2 4 6 Vdd (V) Vdd (V) Thl, Tlh - Vdd Thl, Tlh - T op 8 200 80 Thl ,Tlh (μs) Thl, Tlh (μs) 150 Thl 100 50 Thl 60 40 Tlh 20 Tlh 0 0 2 4 6 -20 Vdd (V) 0 20 40 T op (℃ ) 3 -3 60 80