74lvc374a document number: ds35895 rev. 1 - 2 1 of 10 www.diodes.com june 2014 ? diodes incorporated 74lvc374a new product octal d-type flip-flop with 3 state outputs description the 74lvc374a provides eight edge-triggered d-type flip-flops featuring 3-state outputs designed s pecifically for driving highly capacitive or relatively low-im pedance loads. these devices are particularly suitable for implementing buffer registers, input/output (i/o) ports, bidirectional bus drivers, and working registers. on the positive transition of the clock (clk) input, the q outputs are set to the logic levels set up at the data (d) inputs. a buffered output-enable (oe) input can be used to place the eight outputs in either a normal logic state (high or low logic levels) or the high-impedance state. in the high-impedance state, the outputs neit her load nor drive the bus lines significantly. the high-impedance st ate and increased drive provide the capability to drive bus lines wit hout interface or pullup components. oe does not affect internal operations of the latch. old data can be retained or new data can be entered while the outputs are in the high- impedance state. the ?374a is functionally identical to the ?574a, but the?574 has a different pin arrangement. the device is designed for operation with a power supply range of 1.65v to 3.6v. the device is fully specified for partial power down applications using i off . features ? supply voltage range from 1.65v to 3.6v ? sinks or sources 24ma at v cc = 3v ? cmos low power consumption ? i off supports partial power down operation ? inputs or outputs accept up to 5.5v ? inputs can be driven by 3.3v or 5v allowing for mixed voltage applications ? schmitt trigger action at all inputs ? typical v olp (quiet output ground bounce) less than 0.8v with v cc = 3.3v and t a = +25c ? typical v ohv (quiet output dynamic voh) greater than 2.0v with v cc = 3.3v and t a = +25c ? esd protection tested per jesd 22 ? exceeds 200-v machine model (a115) ? exceeds 2000-v human body model (a114) ? exceeds 1000-v charged device model (c101) ? latch-up exceeds 250ma per jesd 78, class i ? all devices are: ? totally lead-free & fully rohs compliant (notes 1 & 2) ? halogen and antimony free. ?green? device (note 3) pin assignments 1 3 2 4 5 6 7 8 vcc (top view) tssop-20 gnd 10 9 13 14 12 11 17 18 16 15 19 20 2d 1d 2q 3q 3d 4d 4q 1q oe 7q 7d 6q 6d 5d 5q clk 8d 8q top transparent view 3 2 4 5 6 7 8 9 13 14 12 17 18 16 15 19 11 20 1 10 vcc 8q 7q 7d 6q 6d 5d 5q clk 8d gnd oe 2d 1d 2q 3q 3d 4d 4q 1q qfn-20 ( ) terminal 1 index area applications ? general purpose logic ? bus driving ? power down signal isolation ? wide array of products such as: ? pcs, notebooks, netbooks, ultrabooks ? networking computer peripherals, hard drives, cd/dvd rom ? tv, dvd, dvr, set top box notes: 1. no purposely added lead. fully eu directiv e 2002/95/ec (rohs) & 2011/6 5/eu (rohs 2) compliant. 2. see http://www.diodes.com/quality/lead_free.html for more information about diodes incorporated?s definitions of halogen an d antimony free, "green" and lead-free. 3. halogen and antimony free "green? products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm t otal br + cl) and <1000ppm antimony compounds.
74lvc374a document number: ds35895 rev. 1 - 2 2 of 10 www.diodes.com june 2014 ? diodes incorporated 74lvc374a new product ordering information 74 lvc 374a xxx -13 logic device function package packing 74 : logic prefix 374 : octal d-type flip-flop with 3 state outputs t20 : tssop-20 -13 : 13? tape & reel q20 : qfn-20 part number package code package (note 4 & 5) package size 13? tape and reel quantity part number suffix 74lvc374at20-13 t20 tssop-20 6.4mm x 6.5mm x 1.2mm 0.65 mm lead pitch 2500/tape & reel -13 74LVC374AQ20-13 q20 v-qfn4525-20 2.5mm x 4.5mm x 0.95mm 0.50 mm lead pitch 2500/tape & reel -13 notes: 4. pad layout as shown on diodes inc. suggested pad layout document ap02001, which c an be found on our website at http://www.diodes.c om/datasheets/ap02001.pdf. 5. v-qfn4525-20 is a jedec recognized nami ng convention that specifies the package thickness category as v and the number 4525 describes the package as 4.5mm x 2.5mm. pin descriptions pin number pin name description 1 oe output enable 2 q1 latch output 3 d1 data input 4 d2 data input 5 q2 latch output 6 q3 latch output 7 d3 data input 8 d4 data input 9 q4 latch output 10 gnd ground 11 clk clock 12 q5 latch output 13 d5 data input 14 d6 data input 15 q6 latch output 16 q7 latch output 17 d7 data input 18 d8 data input 19 q8 latch output 20 vcc supply voltage logic diagram function table (each latch) inputs output oe clk d q l h h l l l l h or l x q 0 h x x z
74lvc374a document number: ds35895 rev. 1 - 2 3 of 10 www.diodes.com june 2014 ? diodes incorporated 74lvc374a new product absolute maximum ratings (notes 6 & 7) symbol description rating unit esd hbm human body model esd protection 2 kv esd cdm charged device model esd protection 1 kv esd mm machine model esd protection 200 v v cc supply voltage range -0.5 to +7.0 v v i input voltage range -0.5 to +7.0 v i ik input clamp current v i < 0v -20 ma i ok output clamp current v o < 0v -50 ma i o continuous output current -0.5v < v o v cc +0.5v 50 ma i cc continuous current through v cc 100 ma i gnd continuous current through gnd -100 ma t j operating junction temperature -40 to +150 c t stg storage temperature -65 to +150 c p tot total power dissipation 500 mw notes: 6. stresses beyond the absolute maximum may result in imm ediate failure or reduced reliab ility. these are stress values and device operation should be within recommend values. 7. forcing the maximum allowed voltage could cause a condition ex ceeding the maximum current or conversely forcing the maximum current could cause a condition exceeding the maximum voltage. the ratings of both current and voltage must be maintained within the con trolled range. recommended operating conditions (note 8) symbol parameter conditions min max unit v cc supply voltage operating 1.65 3.6 v data retention only 1.5 ? v v i input voltage ? 0 5.5 v v o output voltage ? 0 v cc v i oh high-level output current v cc = 1.65v ? -4 ma v cc = 2.3v ? -8 v cc = 2.7v ? -12 v cc = 3.0v ? -24 i ol low-level output current v cc = 1.65v ? 4 ma v cc = 2.3v ? 8 v cc = 2.7v ? 12 v cc = 3.0v ? 24 ? t/ ? v input transition rise or fall rate ? 10 ns/v t a operating free-air temperature -40 +125 c note: 8. unused inputs should be held at v cc or ground.
74lvc374a document number: ds35895 rev. 1 - 2 4 of 10 www.diodes.com june 2014 ? diodes incorporated 74lvc374a new product electrical characteristics symbol parameter test conditions v cc t a = -40c to +85c t a = +85c to +125c unit min max min max v ih high-level input voltage 1.65v to 1.95v v cc x 0.65 ? v cc x 0.65 ? v 2.3v to 2.7v 1.7 ? 1.7 ? 3.0v to 3.6v 2 ? 2 ? v il low-level input voltage 1.65v to 1.95v ? v cc x 0.35 ? v cc x 0.35 v 2.3v to 2.7v ? 0.7 ? 0.7 3.0v to 3.6v ? 0.8 ? 0.8 v oh high-level output voltage i oh = -50 a 1.65v to 3.6v v cc -0.2 ? v cc -0.3 ? i oh = -4ma 1.65v 1.2 ? 1.05 ? i oh = -8ma 2.3v 1.7 ? 1.65 ? v i oh = -12ma 2.7v 2.2 ? 2.05 ? 3.0v 2.4 ? 2.48 ? i oh = -24ma 3.0v 2.3 ? 2.0 ? v ol low-level output voltage i ol = 100 a 1.65v to 3.6v ? 0.2 ? 0.3 v i ol = 4ma 1.65v ? 0.45 ? 0.65 i ol = 8ma 2.3v ? 0.60 ? 0.80 i ol = 12ma 2.7v ? 0.40 ? 0.60 i ol = 24ma 3.0v ? 0.55 ? 0.80 i off power down leakage current v i or v o = 0 or 5.5v 0v ? 10 ? 20 a i i input current control pins v i =gnd or 5.5v 0 to 3.6v ? 5 ? 20 a i oz z-state current including input current i/o pins v i = gnd or 5.5v v o = 0 to 5.5v 3.6v ? 5 ? 20 ua i cc supply current v i = gnd or v cc i o = 0 3.6v ? 10 ? 40 a ? i cc additional supply current one input at v cc -0.6v io = 0a 2.7v to 3.6v ? 500 ? 5000 a c i input capacitance control pins v i = gnd or v cc 0v to 3.6v 4.0 typical 4.0 typical pf i/o pins 5.5 typical 5.5 typical
74lvc374a document number: ds35895 rev. 1 - 2 5 of 10 www.diodes.com june 2014 ? diodes incorporated 74lvc374a new product switching characteristics symbol parameter test conditions v cc t a = +25c -40c to +85c +85c to +125c unit min typ max min max min max f max maximum frequency figure 1 1.8v 0.15v 35 40 35 30 mhz 2.5v 0.3v 50 60 50 45 2.7v 80 100 80 64 3.3v 0.3v 100 125 100 80 t w pulse width clk figure 1 1.8v 0.15v 5.0 2.5 5.0 5.5 ns 2.5v 0.3v 4.0 2.0 4.0 4.5 2.7v 3.3 1.7 3.3 3.5 3.3v 0.3v 3.0 1.5 3.0 3.5 t su set-up time d n to clk figure 1 1.8v 0.15v 4.0 2.0 4.0 4.5 ns 2.5v 0.3v 3.0 1.5 3.0 3.5 2.7v 2.0 1.0 2.0 2.5 3.3v 0.3v 2.0 1.0 2.0 2.5 t h hold time d n to clk figure 1 1.8v 0.15v 3.0 1.5 3.0 3.5 ns 2.5v 0.3v 2.0 1.0 2.0 2.5 2.7v 1.5 1.0 1.5 2.0 3.3v 0.3v 1.5 1.0 1.5 2.0 t pd propagation delay clk to q n figure 1 1.8v 0.15v 1 6 12.2 1 13.5 1 16.9 ns 2.5v 0.3v 1 3.9 8.5 1 9.0 1 8.7 2.7v 1 4.2 7.8 1 8.1 1 9.5 3.3v 0.3v 1.5 3.8 6.8 1.5 7.0 1.5 8.0 t en enable time oe to q n figure 1 1.8v 0.15v 1 7.8 16.5 1 17 1 14.2 ns 2.5v 0.3v 1 4 9 1 9.5 1 8.2 2.7v 1 4.4 8.3 1 8.5 1 10.0 3.3v 0.3v 1.7 4.1 7.3 1.7 7.5 1.7 9.0 t dis disable time oe to q n figure 1 1.8v 0.15v 1 7.8 16.5 1 17 1 14.2 ns 2.5v 0.3v 1 4 9 1 9.5 1 8.2 2.7v 1 4.4 8.3 1 8.5 1 10.0 3.3v 0.3v 1.7 4.1 7.3 1.7 7.5 1.7 9.0 t dis disable time oe to q n figure 1 1.8v 0.15v 1 7.8 16.5 1 17 1 14.2 ns 2.5v 0.3v 1 4 9 1 9.5 1 8.2 2.7v 1 4.4 8.3 1 8.5 1 10.0 3.3v 0.3v 1.7 4.1 7.3 1.7 7.5 1.7 9.0 tsk(0) output skew time 3.3v 0.3v 1.0 1.5 ns operating characteristics t a = +25c symbol parameter test conditions v cc typ unit c pd power dissipation capacitance per gate f = 10 mhz outputs enabled 1.8v 0.15v 9.9 pf 2.5v 0.3v 10.2 3.3v 0.3v 10.6 package characteristics symbol parameter package test conditions min typ max unit ja thermal resistance junction-to-ambient tssop-20 (note 9) ? 74 ? c/w jc thermal resistance junction-to-case tssop-20 (note 9) ? 15 ? c/w ja thermal resistance junction-to-ambient v-qfn4525-20 (note 9) ? 67 ? c/w jc thermal resistance junction-to-case v-qfn4525-20 (note 9) ? 20 ? c/w note: 9. test conditions for tssop-20 and v-qfn4525-20: devices m ounted on 4 layer fr-4 substrate pc board, 2oz copper, with mi nimum recommended pad layout per jesd 51-7.
74lvc374a document number: ds35895 rev. 1 - 2 6 of 10 www.diodes.com june 2014 ? diodes incorporated 74lvc374a new product parameter measurement information v cc inputs v m v load c l r l v ? v i t r /t f 1.8v 0.15v v cc 2ns v cc /2 2 x v cc 30pf 1k ? 0.15v 2.5v 0.2v v cc 2ns v cc /2 2 x v cc 30pf 500 ? 0.15v 2.7v 2.7v 2.5ns 1.5v 6v 50pf 500 ? 0.3v 3.3v 0.3v 2.7v 2.5ns 1.5v 6v 50pf 500 ? 0.3v voltage waveform enable and disable times low and high level enabling voltage waveform pulse duration voltage waveform propagation delay times inverting and non inverting outputs notes: a. includes test lead and test apparatus capacitance. b. all pulses are supplied at pulse repetition rate 10 mhz. c. inputs are measured separately one transition per measurement. d. t plz and t phz are the same as t dis. e. t pzl and t pzh are the same as t en0 f. t plh and t phl are the same as t pd. figure 1 load circuit and voltage waveforms test s1 t plh /t phl open t plz /t pzl v load t phz /t pzh gnd
74lvc374a document number: ds35895 rev. 1 - 2 7 of 10 www.diodes.com june 2014 ? diodes incorporated 74lvc374a new product marking information (1) tssop20 part number package 74lvc374at20 tssop-20 (2) qfn-20 (v-qfn4525-20) terminal 1 index area (top view ) yy ww x x logo part number (top view ) logo part number ww : week : 01~52; 52 yy : year : 08, 09,10~ x represents 52 and 53 week ww : week : 01~52; 52 yy : year : 08, 09,10~ x represents 52 and 53 week : internal codes part number package 74lvc374aq20 v-qfn4525-20 74lvc374a 74lvc374 a
74lvc374a document number: ds35895 rev. 1 - 2 8 of 10 www.diodes.com june 2014 ? diodes incorporated 74lvc374a new product package outline dimensions (all dimensions in mm) please see ap02002 at http://www.diodes.com/dat asheets/ap02002.pdf for the latest version. (1) tssop-20 (2) qfn-20 (v-qfn4525-20) tssop-20 dim min max typ a - 1.20 - a1 0.05 0.15 - a2 0.80 1.05 - b 0.19 0.30 - c 0.09 0.20 - d 6.40 6.60 6.50 e 6.20 6.60 6.40 e1 4.30 4.50 4.40 e 0.65 bsc l 0.45 0.75 0.60 l1 1.0 ref 1 0 8 - 2 10 14 12 3 10 14 12 all dimensions in mm v-qfn4525-20 dim min max typ a 0.75 0.85 0.80 a1 0.00 0.05 0.02 a3 - - 0.15 b 0.18 0.30 0.23 d 4.45 4.55 4.50 d2 2.85 3.15 3.00 e 2.45 2.55 2.50 e2 0.85 1.15 1.00 e 0.50bsc l 0.30 0.50 0.40 z - - 0.385 z1 - - 0.885 all dimensions in mm id mark pin 1 e d e e1 a2 a a1 b detail seating plane 1 gauge plane 0.25 l l1 2 3 a a 3 s e a t i n g p l a n e a 1 p i n # 1 i d d e b 2 0 x e 2 l 2 0 x d 2 e z 4 x z 1 4 x
74lvc374a document number: ds35895 rev. 1 - 2 9 of 10 www.diodes.com june 2014 ? diodes incorporated 74lvc374a new product suggested pad layout please see ap02001 at http://www.diodes.com/dat asheets/ap02001.pdf for the latest version. (1) tssop-20 (2) qfn-20 (v-qfn4525-20) dimensions value (in mm) c 0.650 x 0.420 x1 6.270 y 1.789 y1 4.160 y2 7.720 dimensions value (in mm) c 0.500 x 0.330 x1 0.600 x2 3.200 x3 3.830 x4 4.800 y 0.600 y1 1.200 y2 0.830 y3 2.800 y1 y2 y (20x) x (20x) c x1 x 4 y 3 y 2 x 3 x 2 y 1 y x c x 1
74lvc374a document number: ds35895 rev. 1 - 2 10 of 10 www.diodes.com june 2014 ? diodes incorporated 74lvc374a new product important notice diodes incorporated makes no warranty of any kind, express or implied, with regards to this document, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose (and their equivalents under the laws of any jurisdiction). diodes incorporated and its subsidiaries rese rve the right to make modifications, enhanc ements, improvements, corrections or ot her changes without further notice to this document and any product descri bed herein. diodes incorporated does not assume any liability ari sing out of the application or use of this document or an y product described herein; neither does di odes incorporated convey any license under its patent or trademark rights, nor the rights of others. any customer or us er of this document or products described herein in such applica tions shall assume all risks of such use and will agree to hold diodes incorporated and all the companies whose products are represented on diodes incorporated website, harmless against all damages. diodes incorporated does not warrant or accept any liability w hatsoever in respect of any products purchased through unauthoriz ed sales channel. should customers purchase or use diodes inco rporated products for any unintended or una uthorized application, customers shall i ndemnify and hold diodes incorporated and its representativ es harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death a ssociated with such unintended or unauthorized application. products described herein may be covered by one or more united states, international or foreign patents pending. product names and markings noted herein may also be covered by one or more united states, international or foreign trademarks. this document is written in english but may be translated into multiple languages for reference. only the english version of t his document is the final and determinative format released by diodes incorporated. life support diodes incorporated products are specifically not authorized for use as critical component s in life support devices or systems without the express written approval of the chief executive offi cer of diodes incorporated. as used herein: a. life support devices or syst ems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when prope rly used in accordance with instructions for use provided in the labeling can be reasonably expected to re sult in significant injury to the user. b. a critical component is any component in a life support devic e or system whose failure to perform can be reasonably expect ed to cause the failure of the life support device or to affect its safety or effectiveness. customers represent that they have all necessary expertise in the safety and regulatory ramifi cations of their life support dev ices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-rel ated requirements concerning the ir products and any use of diodes incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or s ystems-related information or support that may be provided by diodes incorporated. further, customers must fully indemnify diodes incorporate d and its representatives against any damages arisi ng out of the use of diodes incorporated pr oducts in such safety-critical, life suppor t devices or systems. copyright ? 2014, diodes incorporated www.diodes.com
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