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74F14SC 데이터시트(PDF) 1 Page - Fairchild Semiconductor |
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74F14SC 데이터시트(HTML) 1 Page - Fairchild Semiconductor |
1 / 4 page © 1999 Fairchild Semiconductor Corporation DS009461 www.fairchildsemi.com March 1988 Revised July 1999 74F14 Hex Inverter Schmitt Trigger General Description The 74F14 contains six logic inverters which accept stan- dard TTL input signals and provide standard TTL output levels. They are capable of transforming slowly changing input signals into sharply defined, jitter-free output signals. In addition, they have a greater noise margin than conven- tional inverters. Each circuit contains a Schmitt trigger followed by a Dar- lington level shifter and a phase splitter driving a TTL totem-pole output. The Schmitt trigger uses positive feed back to effectively speed-up slow input transition, and pro- vide different input threshold voltages for positive and neg- ative-going transitions. This hysteresis between the positive-going and negative-going input thresholds (typi- cally 800 mV) is determined internally by resistor ratios and is essentially insensitive to temperature and supply voltage variations. Ordering Code: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Logic Symbol IEEE/IEC Unit Loading/Fan Out Connection Diagram Function Table H = HIGH Voltage Level L = LOW Voltage Level Order Number Package Number Package Description 74F14SC M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150 Narrow 74F14SJ M14D 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74F14PC N14A 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Pin Names Description U.L. Input IIH/IIL HIGH/LOW Output IOH/IOL In Input 1.0/1.0 20 µA/−0.6 mA On Output 50/33.3 −1 mA/20 mA Input Output AO LH HL |
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