? 2000 fairchild semiconductor corporation ds009461 www.fairchildsemi.com march 1988 revised september 2000 74f14 hex inverter schmitt trigger 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 connection diagram unit loading/fan out 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 i ih /i il high/low output i oh /i ol i n input 1.0/1.0 20 a/ ? 0.6 ma o n output 50/33.3 ? 1 ma/20 ma input output ao lh hl
www.fairchildsemi.com 2 74f14 absolute maximum ratings (note 1) recommended operating conditions note 1: absolute maximum ratings are values beyond which the device may be damaged or have its useful life impaired. functional operation under these conditions is not implied. note 2: either voltage limit or current limit is sufficient to protect inputs. dc electrical characteristics ac electrical characteristics storage temperature ? 65 c to + 150 c ambient temperature under bias ? 55 c to + 125 c junction temperature under bias ? 55 c to + 175 c v cc pin potential to ground pin ? 0.5v to + 7.0v input voltage (note 2) ? 0.5v to + 7.0v input current (note 2) ? 30 ma to + 5.0 ma voltage applied to output in high state (with v cc = 0v) standard output ? 0.5v to v cc 3-state output ? 0.5v to + 5.5v current applied to output in low state (max) twice the rated i ol (ma) esd last passing voltage (min) 4000v free air ambient temperature 0 c to + 70 c supply voltage + 4.5v to + 5.5v symbol parameter min typ max units v cc conditions v t + positive-going threshold 1.5 1.7 2.0 v 5.0v v t ? negative-going threshold 0.7 0.9 1.1 v 5.0v ? v t hysteresis (v t + ? v t ? ) 0.4 0.8 v 5.0v v cd input clamp diode voltage ? 1.2 v min i in = ? 18 ma v oh output high 10% v cc 2.5 vmin i oh = ? 1 ma voltage 5% v cc 2.7 i oh = ? 1 ma v ol output low 10% v cc 0.5 v min i ol = 20 ma voltage i ih input high 5.0 amaxv in = 2.7v current i bvi input high current 7.0 amaxv in = 7.0v breakdown test i cex output high 50 amaxv out = v cc leakage current v id input leakage 4.75 v max i id = 1.9 a te s t all other pins grounded i od output leakage 3.75 a0.0 v iod = 150 mv circuit current all other pins grounded i il input low current ? 0.6 ma max v in = 0.5v i os output short-circuit current ? 60 ? 150 ma max v out = 0v i cch power supply current 25 ma max v o = high i ccl power supply current 25 ma max v o = low symbol parameter t a = + 25 ct a = ? 55 c to + 125 ct a = 0 c to + 70 c units v cc = + 5.0v v cc = + 5.0v v cc = + 5.0v c l = 50 pf c l = 50 pf c l = 50 pf min max min max min max t plh propagation delay 4.0 10.5 4.0 13.0 4.0 11.5 ns t phl i n o n 3.5 8.5 3.5 10.0 3.5 9.0
3 www.fairchildsemi.com 74f14 physical dimensions inches (millimeters) unless otherwise noted 14-lead small outline integrated circuit (soic), jedec ms-120, 0.150 narrow package number m14a
www.fairchildsemi.com 4 74f14 physical dimensions inches (millimeters) unless otherwise noted (continued) 14-lead small outline package (sop), eiaj type ii, 5.3mm wide package number m14d
5 www.fairchildsemi.com 74f14 hex inverter schmitt trigger physical dimensions inches (millimeters) unless otherwise noted (continued) 14-lead plastic dual-in-line package (pdip), jedec ms-001, 0.300 wide package number n14a fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and fairchild reserves the right at any time without notice to change said circuitry and specifications. life support policy fairchild ? s products are not authorized for use as critical components in life support devices or systems without the express written approval of the president of fairchild semiconductor corporation. as used herein: 1. life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be rea- sonably expected to result in a significant injury to the user. 2. a critical component in any component of a life support device or system whose failure to perform can be rea- sonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com
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