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NTE1537 Datasheet(PDF) 3 Page - NTE Electronics |
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3 page 
Electrical Characteristics (Cont’d): (TA = +25°C, VDD = 8 to 10.3V, VSS = 0V, Vref = 7.9 to 9V, Vref ≤ VDD unless otherwise specified) Parameter Symbol Test Conditions Min Typ Max Unit Input Floating Voltage VIF3 SET, DEMAND, input floating 0.45VDD – 0.55VDD V Input “H” Level Current IIH4 INHI, VDD = 4.3 to 10.3V, VIN = VDD 15 – 400 µA Input Floating Voltage VIF4 INHI, VDD = 4.3 to 10.3V, input floating 0 – 0.3 V Feedback Resistance Rf1 Feedback resistance across OSC–IN and OSC–OUT – 3 – M Ω Rf2 Feedback resistance of Fin–FM – 3 – M Ω Rf3 Feedback resistance of Fin–AM – 3 – M Ω Output “L” Level Voltage VOL1 PM, VDD = 8V, IOL = 45mA – – 0.7 V VOL2 Segment outputs other than PM VDD = 8V, IOL = 15mA – – 0.7 V Output Leakage Current IOFF All segment outputs, VDD = 10.3V, VOH = 10.3V – – 10 µA Current Dissipation IDD1 VDD = 10.3V, fopg = 4MHz (with crystal mounted), fIN2 = 2.5MHz (0.7VP–P) – 8 17 mA IDD2 VDD = 5.5V, fopg = 4MHz (with crystal mounted), Vref = 0V, INHI = 0 – 1.0 2.5 mA Iref VDD = 10.3V, Vref = 9V, AM–Fine = FM–Fine = Vref – 0.5 1.5 mA Note 1. + sign: Flowing into LSI – sign: Flowing out of LSI Seg – PM Digit 1 Seg – c Digit 1 Seg – b Digit 1 Seg – a Digit 2 Seg – f Digit 2 Seg – e Digit 2 Seg – d Digit 2 Seg – c Digit 2 Seg – g Digit 2 Seg – b Digit 2 Seg – a Digit 3 Seg – f Digit 3 Seg – e Digit 3 Seg – d Digit 3 VSS Seg – c Digit 3 Seg – g Digit 3 Seg – b Digit 3 Seg – a Digit 4 Seg – f Digit 4 Seg – e Digit 4 INHI Seg – b Digit 4 Seg – g Digit 4 Seg – c Digit 4 Pin Connection Diagram Vref VDD IF – AM 2 FM – Fine FM/AM 1 2 3 4 5 FIN – FM 6 FIN – AM 7 IF – FM 8 42 41 40 39 38 37 36 35 9 34 10 IF – AM 1 11 33 32 12 31 13 AM – Fine 30 14 CTL/CLD 29 12/24 H 15 SET 28 16 Demand 17 27 26 18 25 19 OSC Output 24 20 OSC Input 23 21 22 Seg – d Digit 4 |
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