View HD74HC190HD74HC191_2262453.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

hd74hc190/hd74hc191 synchronous up/down decade counter (single clock line) synchronous up/donw 4-bit binary counter (single clock line) ade-205-464 (z) 1st. edition sep. 2000 description the hd74hc190 and hd74hc191 are synchronous, reverside up/down counters. the hd74hc190 is a 4-bit decade counter and the hd74hc191 is a 4-bit binary counter. synchronous counting operation is provided by having all flip-flops clocked simultaneously so that the outputs change coincident with each other when so instructed by the steering logic. this mode of operation eliminates the output counting spikes normally associated with asynchronous (ripple clock) counters. the outputs of the four flip-flops are triggered on a low-to-high-level transition of the clock input if the enable g input is low. a high at enable g inhibits counting. the direction of the count is determined by the level of the down/ up (d/ u ) input. when d/ u is low, the counter counts up and when d/ u is high, it counts down. these counters feature a fully independent clock circuit. changes at the control inputs (d/ u ) that will modify the operating mode have no effect on the contents of the counter until clocking occurs. the function of the counter will be dictated solely by the condition meeting the stable setup and hold times. these counters are fully programmable; that is, the outputs may each be preset to either level by placing a low on the load input and entering the desired data at the data inputs. the output will change to agree with the data inputs independently of the level of the clock input. this feature allows the counters to be used as modulo-n dividers by simply modifying the count length with the preset inputs. two outputs have been made available to perform the cascading function. ripple clock and maximum/minimum count. the latter output produces a high-level output pulse with a duration approximately qual to one complete cycle of the clock while the count is zero (all outputs low) counting down or maximum (9 or 15) counting up. the ripple clock output produces a low-level output pulse under those same conditions but only while the clock input is low. the counters can be easily cascaded by feeding the ripple clock output to the enable input of the succeeding counter if parallel clocking is used, or to the clock input if paralle enabling is used. the maximum/minimum count output can be used to accomplish look-ahead for high-speed operation.
hd74hc190/hd74hc191 2 features high speed operation: t pd (clock to q) = 22 ns typ (c l = 50 pf) high output current: fanout of 10 lsttl loads wide operating voltage: v cc = 2 to 6 v low input current: 1 ? max low quiescent supply current: i cc (static) = 4 ? max (ta = 25?) pin arrangement 1 2 3 4 5 6 7 8 q b q a enable g down/up q c q d gnd v cc data a clock max/min load data c data d 16 15 14 13 12 11 10 9 (top view) ripple clock data b ripple clock outputs outputs inputs inputs a ck max/min load c d q d q c dn/up g q a q b b inputs inputs outputs
hd74hc190/hd74hc191 3 timing chart hd74hc190 illustrated below is the following sequence: 1. load (preset) to bcd seven. 2. count up to eight, nine (maximum), zero, one and two. 3. inhibit 4. count down to one, zero (minimum), nine, eight and seven. load a b c d clock down/up enable g q a q b q c q d max/min ripple clock 7 load 89 012 2210987 count up inhibit count down
hd74hc190/hd74hc191 4 hd74hc191 illustrated below is the following sequence: 1. load (preset) to binary thirteen. 2. count up to fourteen, fifteen (maximum), zero, one and two. 3. inhibit 4. count down to one, zero (minimum), fifteen, fourteen and thirteen. load a data inputs b c d clock down/up enable g q a q b q c q d max/min ripple clock 13 load 14 15 0 1 2 2 1 0 15 14 13 count up inhibit count down
hd74hc190/hd74hc191 5 logic diagram hd74hc190 ripple clock clock down/up input a enable g input b input c input d load max/min output ck p a q q q q incl ck ck p b incl ck q q ck p c incl ck q q ck p d incl ck q a q b q c q d
hd74hc190/hd74hc191 6 hd74hc191 ripple clock clock down/up input a enable g input b input c input d load max/min output ck p a q q q q incl ck ck p b incl ck q q ck p c incl ck q q ck p d incl ck q a q b q c q d
hd74hc190/hd74hc191 7 dc characteristics ta = 25 c ta = ?0 to +85 c item symbol v cc (v) min typ max min max unit test conditions input voltage v ih 2.0 1.5 1.5 v 4.5 3.15 3.15 6.0 4.2 4.2 v il 2.0 0.5 0.5 v 4.5 1.35 1.35 6.0 1.8 1.8 output voltage v oh 2.0 1.9 2.0 1.9 v vin = v ih or v il i oh = ?0 m a 4.5 4.4 4.5 4.4 6.0 5.9 6.0 5.9 4.5 4.18 4.13 i oh = ? ma 6.0 5.68 5.63 i oh = ?.2 ma v ol 2.0 0.0 0.1 0.1 v vin = v ih or v il i ol = 20 m a 4.5 0.0 0.1 0.1 6.0 0.0 0.1 0.1 4.5 0.26 0.33 i ol = 4 ma 6.0 0.26 0.33 i ol = 5.2 ma input current iin 6.0 0.1 1.0 m a vin = v cc or gnd quiescent supply current i cc 6.0 4.0 40 m a vin = v cc or gnd, iout = 0 m a
hd74hc190/hd74hc191 8 ac characteristics (c l = 50 pf, input t r = t f = 6 ns) ta = 25 c ta = ?0 to +85 c item symbol v cc (v) min typ max min max unit test conditions maximum clock f max 2.0 5 4 mhz frequency 4.5 25 20 6.0 29 24 propagation delay t plh 2.0 265 335 ns load to q time t phl 4.5 21 53 66 6.0 45 56 2.0 230 290 data to q 4.5 18 46 58 6.0 39 49 2.0 120 150 clock to rc 4.5 14 24 30 6.0 20 26 2.0 190 240 clock to q 4.5 22 38 48 6.0 32 41 2.0 250 315 clock to max/min 4.5 26 50 63 6.0 43 54 2.0 230 290 down/up to rc 4.5 20 46 58 6.0 39 49 2.0 130 165 g to rc 4.5 14 26 33 6.0 22 28 2.0 190 240 down/up to max/min 4.5 17 38 48 6.0 32 41 pulse width t w 2.0 80 100 ns 4.5 16 8 20 6.0 14 17 hold time t h 2.0 0 0 ns 4.5 0 6 0 6.0 0 0
hd74hc190/hd74hc191 9 ac characteristics (c l = 50 pf, input t r = t f = 6 ns) (cont) ta = 25 c ta = ?0 to +85 c item symbol v cc (v) min typ max min max unit test conditions setup time t su 2.0 100 125 ns 4.5 20 7 25 6.0 17 21 output rise/fall t tlh 2.0 75 95 ns time t thl 4.5 5 15 19 6.0 13 16 input capacitance cin 5 10 10 pf
hd74hc190/hd74hc191 10 package dimensions hitachi code jedec eiaj mass (reference value) dp-16 conforms conforms 1.07 g unit: mm 6.30 19.20 16 9 8 1 1.3 20.00 max 7.40 max 7.62 0.25 + 0.13 ?0.05 2.54 0.25 0.48 0.10 0.51 min 2.54 min 5.06 max 0 ?15 1.11 max hitachi code jedec eiaj mass (reference value) fp-16da conforms 0.24 g unit: mm *dimension including the plating thickness base material dimension *0.22 0.05 *0.42 0.08 0.12 0.15 m 2.20 max 5.5 10.06 0.80 max 16 9 1 8 10.5 max + 0.20 ?0.30 7.80 0.70 0.20 0 ?8 0.10 0.10 1.15 1.27 0.40 0.06 0.20 0.04
hd74hc190/hd74hc191 11 hitachi code jedec eiaj mass (reference value) fp-16dn conforms conforms 0.15 g unit: mm *dimension including the plating thickness base material dimension 1.27 16 9 1 8 0.15 0.25 m 1.75 max 3.95 *0.22 0.03 9.9 0 ?8 10.3 max + 0.10 ?0.30 6.10 + 0.67 ?0.20 0.60 + 0.11 ?0.04 0.14 *0.42 0.08 0.635 max 0.40 0.06 0.20 0.03 1.08
hd74hc190/hd74hc191 12 cautions 1. hitachi neither warrants nor grants licenses of any rights of hitachi? or any third party? patent, copyright, trademark, or other intellectual property rights for information contained in this document. hitachi bears no responsibility for problems that may arise with third party? rights, including intellectual property rights, in connection with use of the information contained in this document. 2. products and product specifications may be subject to change without notice. confirm that you have received the latest product standards or specifications before final design, purchase or use. 3. hitachi makes every attempt to ensure that its products are of high quality and reliability. however, contact hitachi? sales office before using the product in an application that demands especially high quality and reliability or where its failure or malfunction may directly threaten human life or cause risk of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation, traffic, safety equipment or medical equipment for life support. 4. design your application so that the product is used within the ranges guaranteed by hitachi particularly for maximum rating, operating supply voltage range, heat radiation characteristics, installation conditions and other characteristics. hitachi bears no responsibility for failure or damage when used beyond the guaranteed ranges. even within the guaranteed ranges, consider normally foreseeable failure rates or failure modes in semiconductor devices and employ systemic measures such as fail- safes, so that the equipment incorporating hitachi product does not cause bodily injury, fire or other consequential damage due to operation of the hitachi product. 5. this product is not designed to be radiation resistant. 6. no one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from hitachi. 7. contact hitachi? sales office for any questions regarding this document or hitachi semiconductor products. hitachi, ltd. semiconductor & integrated circuits. nippon bldg., 2-6-2, ohte-machi, chiyoda-ku, tokyo 100-0004, japan tel: tokyo (03) 3270-2111 fax: (03) 3270-5109 copyright ? hitachi, ltd., 2000. all rights reserved. printed in japan. hitachi asia ltd. hitachi tower 16 collyer quay #20-00, singapore 049318 tel : <65>-538-6533/538-8577 fax : <65>-538-6933/538-3877 url : http://www.hitachi.com.sg url northamerica : http://semiconductor.hitachi.com/ europe : http://www.hitachi-eu.com/hel/ecg asia : http://sicapac.hitachi-asia.com japan : http://www.hitachi.co.jp/sicd/indx.htm hitachi asia ltd. (taipei branch office) 4/f, no. 167, tun hwa north road, hung-kuo building, taipei (105), taiwan tel : <886>-(2)-2718-3666 fax : <886>-(2)-2718-8180 telex : 23222 has-tp url : http://www.hitachi.com.tw hitachi asia (hong kong) ltd. group iii (electronic components) 7/f., north tower, world finance centre, harbour city, canton road tsim sha tsui, kowloon, hong kong tel : <852>-(2)-735-9218 fax : <852>-(2)-730-0281 url : http://www.hitachi.com.hk hitachi europe ltd. electronic components group. whitebrook park lower cookham road maidenhead berkshire sl6 8ya, united kingdom tel: <44> (1628) 585000 fax: <44> (1628) 585160 hitachi europe gmbh electronic components group dornacher stra b e 3 d-85622 feldkirchen, munich germany tel: <49> (89) 9 9180-0 fax: <49> (89) 9 29 30 00 hitachi semiconductor (america) inc. 179 east tasman drive, san jose,ca 95134 tel: <1> (408) 433-1990 fax: <1>(408) 433-0223 for further information write to: colophon 2.0

▲Up To Search▲

Price & Availability of HD74HC190HD74HC191

	To Download HD74HC190HD74HC191 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .