? 1999 fairchild semiconductor corporation ds009519 www.fairchildsemi.com may 1988 revised august 1999 74f352 dual 4-input multiplexer 74f352 dual 4-input multiplexer general description the 74f352 is a very high-speed dual 4-input multiplexer with common select inputs and individual enable inputs for each section. it can select two bits of data from four sources. the two buffered outputs present data in the inverted (complementary) form. the 74f352 is the func- tional equivalent of the 74f153 except with inverted out- puts. features n inverted version of 74f153 n separate enables for each multiplexer n input clamp diode limits high speed termination effects ordering code: devices also available in tape and reel. specify by appending the suffix letter x to the ordering code. logic symbols ieee/iec connection diagram truth table h = high voltage level l = low voltage level x = immaterial order number package number package description 74f352sj m16d 16-lead small outline package (sop), eiaj type ii, 5.3mm wide 74f352pc n16e 16-lead plastic dual-in-line package (pdip), jedec ms-001, 0.300 wide select inputs (a or b) output inputs s 0 s 1 e i 0 i 1 i 2 i 3 z xxhxxxx h llllxxx h lllhxxx l hllxlxx h hllxhxx l lhlxxlx h lhlxxhx l hhlxxxl h hhlxxxh l
www.fairchildsemi.com 2 74f352 unit loading/fan out functional description the 74f352 is a dual 4-input multiplexer. it selects two bits of data from up to four sources under the control of the common select inputs (s 0 , s 1 ). the two 4-input multiplexer circuits have individual active low enables (e a , e b ) which can be used to strobe the outputs independently. when the enables (e a , e b ) are high, the corresponding outputs (z a , z b ) are forced high. the logic equations for the outputs are shown below: z a = e a ? (i 0a ? s 1 ? s 0 + i 1a ? s 1 ? s 0 + i 2a ? s 1 ? s 0 + i 3a ? s 1 ? s 0 ) z b = e b ? (i 0b ? s 1 ? s 0 + i 1b ? s 1 ? s 0 + i 2b ? s 1 ? s 0 + i 3b ? s 1 ? s 0 ) the 74f352 can be used to move data from a group of reg- isters to a common output bus. the particular register from which the data came would be determined by the state of the select inputs. a less obvious application is as a func- tion generator. the 74f352 can generate two functions of three variables. this is useful for implementing highly irreg- ular random logic. logic diagram please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate pro pagation delays. pin names description u.l. input i ih /i il high/low output i oh /i ol i 0a Ci 3a side a data inputs 1.0/1.0 20 m a/ - 0.6 ma i 0b Ci 3b side b data inputs 1.0/1.0 20 m a/ - 0.6 ma s 0 Cs 1 common select inputs 1.0/1.0 20 m a/ - 0.6 ma e a side a enable input (active low) 1.0/1.0 20 m a/ - 0.6 ma e b side b enable input (active low) 1.0/1.0 20 m a/ - 0.6 ma z a , z b multiplexer outputs (inverted) 50/33.3 - 1 ma/20 ma
3 www.fairchildsemi.com 74f352 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 + 150 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) 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 ih input high voltage 2.0 v recognized as a high signal v il input low voltage 0.8 v recognized as a low signal 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 m amaxv in = 2.7v current i bvi input high current 7.0 m amaxv in = 7.0v breakdown test i cex output high 50 m amaxv out = v cc leakage current v id input leakage 4.75 v 0.0 i id = 1.9 m a te s t all other pins grounded i od output leakage 3.75 m 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 9.3 14 ma max v o = high i ccl power supply current 13.3 20 ma max v o = low symbol parameter t a = + 25 ct a = 0 c to + 70 c units v cc = + 5.0v v cc = + 5.0v c l = 50 pf c l = 50 pf min typ max min max t plh propagation delay 4.0 8.0 11.0 3.5 12.5 ns t phl s n to z n 3.56.58.53.09.5 t plh propagation delay 3.0 4.5 6.0 2.5 7.0 ns t phl e n to z n 3.05.07.02.58.0 t plh propagation delay 2.0 5.2 7.0 2.0 8.0 ns t phl i n to z n 1.32.54.01.04.5
www.fairchildsemi.com 4 74f352 physical dimensions inches (millimeters) unless otherwise noted 16-lead small outline package (sop), eiaj type ii, 5.3mm wide package number m16d
5 www.fairchildsemi.com 74f352 dual 4-input multiplexer physical dimensions inches (millimeters) unless otherwise noted (continued) 16-lead plastic dual-in-line package (pdip), jedec ms-001, 0.300 wide package number n16e 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 fairchilds 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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