CMOS LOGIC IC ELM7S14B Schmitt Inverter ■General description ELM7S14B is CMOS schmitt inverter IC. It realizes high speed operation similar to LS-TTL with lower power consumption by CMOS features. The inner circuit structure of 3-stage logic gate obtains wider noise immunity and constant output. ■Features • • • • • • Same electrical characteristic as 74HC series (output current is around 1/2 of 74HC series) Low voltage operation : Idd=1.0μA(Max.)(Top=25°C) Wide power voltage range : 2.0V to 6.0V High speed : Tpd=5ns(Typ.)(Vdd=5.0V) Symmetrical output impedance : | Ioh |=Iol=2mA(Min.)(Vdd=4.5V) Small package : SOT-25 ■Application • • • • • • Cell phones Digital cameras Portable electrical appliances like PDA, etc. Computers and peripherals Digital electrical appliances like LCD TV sets, DVD recorders/players, STB, etc. Modification inside print board, adjustment of timing, solution to noise ■Selection guide ELM7S14B-EL Symbol a b c Function Product version Taping direction 14: Schmitt inverter B EL: Refer to PKG file ELM7S 1 4 B - EL ↑ ↑ ↑ a b c ■Maximum absolute ratings Parameter Power supply voltage Input voltage Output voltage Input protection diode current Output parasitic diode current Output current VDD/GND current Power dissipation Storage temperature Symbol Vdd Vin Vout Iik Iok Iout Idd, Ignd Pd Tstg Limit -0.5 to +7.0 -0.5 to Vdd+0.5 -0.5 to Vdd+0.5 ±20 ±20 ±25 ±25 200 -65 to +150 3- 1 Unit V V V mA mA mA mA mW °C CMOS LOGIC IC ELM7S14B Schmitt Inverter ■Suggested operating condition Parameter Power voltage Input voltage Output voltage Operating temperature Symbol Vdd Vin Vout Top High-input down-time tr, tf Limit 2.0 to 6.0 0 to Vdd 0 to Vdd -40 to +85 Vdd=2.0V Vdd=4.5V Vdd=6.0V Unit V V V °C 0 to 1000 0 to 500 0 to 400 ns ■Pin configuration SOT-25(TOP VIEW) 4 5 1 2 3 Pin No. 1 2 3 4 5 Pin name NC INY GND OUTX VDD Input INY Low High ■AC electrical characteristics Parameter Sym. tTLH tTHL tPLH tPHL Output transition time Propagation delay-time Output OUTX High Low CL=15pF, tr=tf=6ns, Vdd=5V Top=25°C Min. Typ. Max. 5 5 7 7 10 10 15 15 Unit Condition ns Refer to test circuit ns Refer to test circuit CL=50pF, tr=tf=6ns Parameter Sym. tTLH Output transition time tTHL tPLH Propagation delay-time tPHL Input capacity Equivalent inner capacity Cin Cpd Vdd 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 Top=-40 to +85°C Top=25°C Unit Min. Typ. Max. Min. Max. 50 14 12 50 14 12 48 12 9 48 12 9 5 10 125 25 21 125 25 21 100 20 17 100 20 17 10 155 31 26 155 31 26 125 25 21 125 25 21 10 Condition ns Refer to test circuit ns ns Refer to test circuit ns pF pF * Cpd is IC's inner equivalent capacity which is calculated from non-loaded operating current consumption referred to test circuit. Averaged operating current consumption at non load is calculated as following formula: Idd(opr)=Cpd • Vdd • fin+Idd 3- 2 CMOS LOGIC IC ELM7S14B Schmitt Inverter ■DC electrical characteristics Parameter Sym. Vt+ Threshold voltage Vt- Hysteresis voltage Vh Voh Output voltage Vol Input current Static current Iin Idd Vdd Min. 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 4.5 6.0 2.0 4.5 6.0 4.5 6.0 6.0 6.0 Top=25°C Typ. Max. 0.30 0.90 1.20 0.20 0.40 0.60 1.90 4.40 5.90 4.18 5.68 -0.1 1.50 3.15 4.20 1.20 2.25 3.00 2.00 4.50 6.00 4.31 5.80 0.00 0.00 0.00 0.17 0.18 0.10 0.10 0.10 0.26 0.26 0.1 1.0 ■Test circuit Top=-40 to +85°C Unit Min. Max. 0.30 0.90 1.20 0.20 0.40 0.60 1.90 4.40 5.90 4.13 5.63 -1.0 V V 1.20 2.25 3.00 V V 0.10 0.10 0.10 0.33 0.33 1.0 10.0 Ioh=-20μA Vin= Vih or Vil V Ioh=-2mA Ioh=-2.6mA Iol=20μA Vin=Vih Iol=2mA Iol=2.6mA Vin=Vdd or GND Vin=Vdd or GND μA μA ■Measured wave pattern 6ns Vdd Pulse Oscillator 1.50 3.15 4.20 Condition OUTPUT INPUT INPUT OUTPUT CL 50� 10% 6ns 90% 50% Vdd 90% 50% 10% tTHL 90% 50% tTLH 10% tPHL 10% tPLH * Output should be opened when measuring current consumption. ■Marking SOT-25 a b c Sym. a b c 3- 3 Mark E A A to Z (except I, O, X) GND Content ELM7S series ELM7S14B Lot No. Voh 90% 50% Vol