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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Fairchild NC7SB3257, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.
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The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Fairchild NC7SB3257 one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.
Unfortunately, only a few customers devote their time to read an instruction of Fairchild NC7SB3257. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.
What should a perfect user manual contain?
First and foremost, an user manual of Fairchild NC7SB3257 should contain:
- informations concerning technical data of Fairchild NC7SB3257
- name of the manufacturer and a year of construction of the Fairchild NC7SB3257 item
- rules of operation, control and maintenance of the Fairchild NC7SB3257 item
- safety signs and mark certificates which confirm compatibility with appropriate standards
Why don't we read the manuals?
Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Fairchild NC7SB3257 alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Fairchild NC7SB3257, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Fairchild service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Fairchild NC7SB3257.
Why one should read the manuals?
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Table of contents for the manual
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Page 1
© 2002 Fairch ild Semicon ductor Corpor ation DS5003 25 www.fairchildsemi .com January 2000 Revised Apr il 2002 NC7SB3257 T inyLogic UHS 2:1 Mul tiplexer/Demulti plexer Bus Swi tch NC7SB3257 Ti nyLogic UH S 2:1 Multipl exer/Demultiplex er Bus Swit ch General Descript ion The NC7S B3257 is a high per formance, 2:1 NMOS pass- gate multiplexe[...]
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Page 2
www .fairchildsemi.com 2 NC7SB3257 Logic Symbol Pin Descriptions Function T ab le H = HIGH Logi c Le vel L = LOW Logi c Level Connection Di agrams Pin Assi gnment s for SC70 (T op View) Pin One Or ientati on Diag ram AAA = P rod uct C ode T op Ma rk - se e o rderin g code Note: Ori entat ion o f T op Ma rk det ermin es Pi n One lo cati on. Re ad th[...]
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Page 3
3 www .fairchildsemi.com NC7SB3257 Absolute Maxi mum Ratings (Note 1) Recommended Operating Conditions (Not e 2) Note 1: Abs olut e maxi mum ratin gs ar e DC value s beyond whi ch t he devi ce may b e dam aged or h ave its usef ul li fe i mpa ired . Th e data she et sp ecif ica- tions should be met, without except ion, to ensure that the system des[...]
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Page 4
www .fairchildsemi.com 4 NC7SB3257 AC Electrical Characte ristics Note 6: This pa ra meter is gu ar ante ed by des ign b ut n ot t ested . T he bu s s wit ch con tribu tes no p rop agat ion d elay othe r th an the R C de lay o f the On Resis- tance o f the swi tch and th e 50 pF load c ap acitan c e, w hen drive n by a n ideal vol tage so urc e (ze[...]
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Page 5
5 www .fairchildsemi.com NC7SB3257 AC Loading and W aveforms Note: Input Dr iven by 50 Ω source term in ated in 5 0 Ω Note: C L includes load and s tray c apaci tance Note: Inpu t PRR = 1.0 M H z; t W = 50 0 ns FIGURE 1. AC T est Circuit Inpu t = AC Wav e fo r m ; PRR = V ariable; Duty Cycle = 50% FIGURE 2. AC Waveforms FIGURE 3. Brea k Befo re[...]
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Page 6
www .fairchildsemi.com 6 NC7SB3257 T ape and Reel Specifi cation T APE FORMA T for SC70 T APE DIMENSIONS inches (millimeters) Packa ge T ape Numbe r Cavit y Co ver Tape Desig nator Sectio n Cavitie s Status Status Leader ( Start E nd) 125 (typ) E mpty Sealed P6X Carrier 3000 Filled S ealed Trailer (Hub End) 75 (typ) Empty Sealed Packag e T ap e Siz[...]
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Page 7
7 www .fairchildsemi.com NC7SB3257 T ape and Reel Specification (Continued) T AP E FOR MA T for Mic roPak REEL DIMENSIONS inches (millimeters) Packa ge T ape Number Ca vity Cove r T ape Design ator Secti on Caviti es Stat us Status Leader (Start End) 125 (t yp) Empty Sealed L6X Carrier 5000 Filled Sea led Trailer (Hub End) 75 (typ) Empty Sealed Ta [...]
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Page 8
www .fairchildsemi.com 8 NC7SB3257 Physical Dimensions inches (millimeters) unless otherwise n oted 6-Lead SC70, EIAJ SC8 8, 1.25 mm Wide Packa ge Nu mber M AA06A[...]
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Page 9
Physical Di mensions inches (millimeters) unless otherwise not ed (Continued) 9 www .fairchildsemi.com NC7SB3257 T inyLogic UHS 2:1 Mul tiplexer/Demulti plexer Bus Swi tch Physical Di mensions inches (millimeters) unless otherwise not ed (Continued) 6-Lead MicroP ak, 1.0mm W ide Packag e Number MAC06 A Fairchild does not assume an y re spon sib[...]