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m74hc259 8 - bit addressable latch datasheet - production data features ? high speed: t pd = 20 ns (typ.) at v cc = 6 v ? low power dissipation: i cc = 4 a (max.) at t a = 25 c ? high noise immunity: v nih = v nil = 28 % v cc (min.) ? s ymmetrical output impedance: |i oh | = i ol = 4 ma (min) ? balanced propagation delays: t plh ~= t phl ? wide operating voltage range: v cc (opr) = 2 v to 6 v ? pin and function compatible with 74 series 259 ? esd performance ? cdm: 1 kv ? hbm: 1.5 kv ? mm: 200 v description the m74hc259 is a high - speed cmos 8 - bit addressable latch manufactured with silicon gate c 2 mos technology. the m74hc259 has single data input (d) 8 l atch outputs (q0 - q7), 3 address inputs (a, b, and c), common enable input (e), and a common clear input. to operate this device as an addressable latch, data is held on the d input, and the address of the latch into which the data is to be e ntered is held on the a, b, and c inputs. when enable is taken low, the data flows through to the address outputs. the data is stored on the positive - going edge of the enable pulse. all unaddressed latches will remain unaffect ed. with enable in the high state, the device is deselected and all latches remain in their previous state, unaffected by changes on the data or address inputs. to eliminate the possibility of entering erroneous data into the latches, the enable should be held high (inactive) while the address lines are changing. if enable is held high and clear is taken low, all eight latches are cleared to the low state. if enable is low, all latch es except the addressed latch will be cleared. the addressed latch will instead follow the d input, effectively implementing a 3 - to - 8 line decoder. all inputs are equipped with protection circuits to guard against static discharge and transient excess volt age. table 1: device summary order code temperature range package packaging marking m74hc259yrm13tr (1) - 40 c to +125 c so16 (automotive grade) 1 tape and reel 74hc259y m74hc259rm13tr - 55 c to +125 c so16 tape and reel 74hc259 m74hc259ttr - 55 c to +125 c tssop16 tape and reel hc259 M74HC259YTTR 1 - 40 c to +125 c tssop16 (automotive grade) 1 tape and reel hc259y notes: (1) qualification and characterization according to aec q100 and q003 or equivalent, advanced screening according to aec q001 and q002 or equivalent. tssop16 so16 november 2013 docid001933 rev 2 1 / 19 this is information on a product in full production. www.st.com
contents m74hc259 contents 1 pin information ................................................................................ 5 2 functional description .................................................................... 6 3 electrical characteristics ................................................................ 8 4 package information ..................................................................... 15 4.1 so16 package information .............................................................. 15 4.2 tssop16 package information ....................................................... 17 5 revision history ............................................................................ 18 2 / 19 docid001933 rev 2
m74hc259 list of tables list of tables table 1: device summary ........................................................................................................................... 1 table 2: pin description .............................................................................................................................. 5 table 3: truth table ..................................................................................................................................... 6 table 4: absolute maximu m ratings ........................................................................................................... 8 table 5: recommended operating conditions ............................................................................................ 8 table 6: dc specifications .......................................................................................................................... 9 table 7: ac electrical characteristics (c l = 50 pf, input t r = t f = 6 ns) ..................................................... 10 table 8: capacitive characteristics ........................................................................................................... 11 table 9: plastic so16 package mechanical data ..................................................................................... 16 table 10: tssop16 package mechanical data ........................................................................................ 17 table 11: document revision history ........................................................................................................ 18 docid001933 rev 2 3 / 19
list of figures m74hc259 list of figures figure 1: pin connections and iec logic symbols ...................................................................................... 5 figure 2: input and output equivalent circuit ............................................................................................... 6 figure 3: logic diagram .............................................................................................................................. 7 figure 4: test circuit ................................................................................................................................. 11 figure 5: waveform 1: propagation delay time (f = 1 mhz; 50% duty cycle) ........................................... 12 figure 6: waveform 2: propagation delay time (f = 1 mhz; 50% duty cycle) .......................................... 12 figure 7: waveform 3: minimum pulse width (g), setup and hold time (d to g) (f = 1 mhz; 50% duty cycle) ......................................................................................................................................................... 13 figure 8: waveform 4: minimum pulse width (clr) (f = 1 mhz; 50% duty cycle) ................................... 13 figure 9: waveform 5: setup and hold time (f = 1 mhz; 50 duty cycle) .................................................... 14 figure 10: waveform 6: input waveforms (f = 1 mhz; 50% duty cycle) .................................................... 14 figure 11: plastic so16 package mechanical outline .............................................................................. 15 figure 12: tssop16 package mechanical outline ................................................................................... 17 4 / 19 docid001933 rev 2
m74hc259 pin information 1 pin information figure 1 : pin connections and iec logic symbols table 2: pin description pin number symbol name and function 1, 2, 3 a, b, c address inputs 4, 5, 6, 7, 9, 10, 11, 12 q0 to q7 latch outputs 13 d data input 14 enable latch enable input (active low) 15 clear conditional reset input (low) 8 gnd ground (0 v) 16 v cc positive supply voltage docid001933 rev 2 5 / 19
functional description m74hc259 2 functional description table 3: truth table inputs outputs of addressed latch other output function clear enable h l d qi0 addressable latch h h qi0 qi0 memory l l d l 8 - line demulitplexer l h l l clear all bits to "l" d: the level at the data input qi0: the level before the indicated steady state input conditions where established (i = 0, 1, ??, 7) inputs selected latch addressed c b a l l l q0 l l h q1 l h l q2 l h h q3 h l l q4 h l h q5 h h l q6 h h h q7 figure 2 : input and output equivalent circuit 6 / 19 docid001933 rev 2
m74hc259 functional description figure 3 : logic diagram this logic diagram has not been used to estimate propagation delays. docid001933 rev 2 7 / 19
electrical characteristics m74hc259 3 electrical characteristics stressing the device above the ratings listed in the "absolute maximum ratings" table may cause permanent damage to the device. these are stress ratings only, and operation of the device at these or any other conditions above those indicated in the operating sections of this specification are not implied. exposure to absolute maximum rating conditions for exte nded periods may affect device reliability. table 4: absolute maximum ratings symbol parameter value unit v cc supply voltage - 0.5 to +7 v v i dc input voltage - 0.5 to v cc to +0.5 v v o dc output voltage - 0.5 to v cc to +0.5 v i ik dc input diode current 20 ma i ok dc output diode current 20 ma i o dc output current 25 ma i cc or i gnd dc vcc or ground current 50 ma p d power dissipation 500 (1) mw t stg storage temperature - 65 to +150 c t l lead temperature (10 sec.) 300 c notes: (1) 500 mw at 65 c; derate to 300 mw by 10 mw/c from 65 c to 85 c table 5: recommended operating conditions symbol parameter value unit v cc supply voltage 2 to 6 v v i input voltage 0 to v cc v v o output voltage 0 to v cc v t op operating temperature - 55 to 125 c t r , t f input rise and fall time v cc = 2.0 v 0 to 1000 ns v cc = 4.5 v 0 to 500 ns v cc = 6.0 v 0 to 400 ns 8 / 19 docid001933 rev 2
m74hc259 electrical characteristics table 6: dc specifications symbol parameter test condition value unit v cc (v) t a = 25c - 40 to 85c - 55 to 125c min. typ. max. min. max. min. max. v ih high - level input voltage 2.0 1.5 1.5 1.5 v 4.5 3.15 3.15 3.15 6.0 4.2 4.2 4.2 v il low - level input voltage 2.0 0.5 0.5 0.5 v 4.5 1.35 1.35 1.35 6.0 1.8 1.8 1.8 v oh high - level output voltage 2.0 i o = - 20 a 1.9 2.0 1.9 1.9 v 4.5 i o = - 20 a 4.4 4.5 4.4 4.4 6.0 i o = - 20 a 5.9 6.0 5.9 5.9 4.5 i o = - 4.0 ma 4.18 4.31 4.13 4.10 6.0 i o = - 5.2 ma 5.68 5.8 5.63 5.60 v ol low - level output voltage 2.0 i o = 20 a 0.0 0.1 0.1 0.1 v 4.5 i o = 20 a 0.0 0.1 0.1 0.1 6.0 i o = 20 a 0.0 0.1 0.1 0.1 4.5 i o = 4.0 ma 0.17 0.26 0.33 0.40 6.0 i o = 5.2 ma 0.18 0.26 0.33 0.40 i i input leakage current 6.0 v i = v cc or gnd 0.1 1 1 a i cc quiescent supply current 6.0 v i = v cc or gnd 4 40 80 a docid001933 rev 2 9 / 19
electrical characteristics m74hc259 table 7: ac electrical characteristics (c l = 50 pf, input t r = t f = 6 ns) symbol parameter test condition value unit t a = 25c - 40 to 85c - 55 to 125c v cc (v) min. typ. max. min. max. min. max. t tlh t thl output transition time 2.0 30 75 95 110 ns 4.5 8 15 19 22 6.0 7 13 16 19 t plh t phl propagation delay time (data ? q) 2.0 56 140 175 210 ns 4.5 18 28 35 42 6.0 15 24 30 36 t plh t phl propagation delay time (a, b, c ? q) 2.0 76 190 240 285 ns 4.5 24 38 48 57 6.0 20 32 41 48 t plh t phl propagation delay time (g ? q) 2.0 57 150 190 225 ns 4.5 19 30 38 45 6.0 16 26 32 38 t plh t phl propagation delay time ( clear ? q) 2.0 45 115 145 175 ns 4.5 15 23 29 35 6.0 13 20 25 30 t w(l) minimum pulse width ( enable ) 2.0 28 75 90 115 ns 4.5 7 15 19 23 6.0 6 13 16 20 t w(l) minimum pulse width ( clear ) 2.0 24 75 90 115 ns 4.5 6 15 19 23 6.0 5 13 16 20 t s minimum setup time (data) 2.0 12 50 60 75 ns 4.5 3 10 12 15 6.0 3 9 11 13 t s minimum setup time (a, b, c) 2.0 25 30 40 ns 4.5 5 6 8 6.0 5 5 7 t h minimum hold time (data) 2.0 5 5 5 ns 4.5 5 5 5 6.0 5 5 5 t h minimum hold time (a, b, c) 2.0 0 0 0 ns 4.5 0 0 0 6.0 0 0 0 10/ 19 docid001933 rev 2
m74hc259 electrical characteristics table 8: capacitive characteristics symbol parameter test condition value unit t a = 25c - 40 to 85c - 55 to 125c v cc (v) min. typ. max. min. max. min. max. c in input capacitance 5.0 5 10 10 10 pf c pd power dissipation capacitance (1) 5.0 66 pf notes: (1) c pd is defined as the value of the ic?s internal equivalent capacitance which is calculated from the operating current consumption without load (refer to the test circuit). the average operating current can be obtained by the following equation: i cc(opr) = c p d x v cc x f in + i cc figure 4 : test circuit 1. r t = z out of pulse generator (typically 50 ohm) 2. c l = 50 pf or equivalent (includes jig and probe capacitance) docid001933 rev 2 11/ 19 1 r t 2 c l v cc d.u. t . pulse gener a t or
electrical characteristics m74hc259 figure 5 : waveform 1: propagation delay time (f = 1 mhz; 50% duty cycle) figure 6 : waveform 2: propagation delay time (f = 1 mhz; 50% duty c ycle) 12/ 19 docid001933 rev 2
m74hc259 electrical characteristics figure 7 : waveform 3: minimum pulse width (g), setup and hold time (d to g) (f = 1 mhz; 50% duty cycle) figure 8 : waveform 4: minimum pulse width (clr) (f = 1 mhz; 50% duty cycle) docid001933 rev 2 13/ 19
electrical characteristics m74hc259 figure 9 : waveform 5: setup and hold time (f = 1 mhz; 50 % duty cycle) figure 10 : waveform 6: input waveforms (f = 1 mhz; 50% duty cycle) 14/ 19 docid001933 rev 2
m74hc259 package information 4 package information in order to meet environmental requirements, st offers these devices in different grades of ecopack ? packages, depending on their level of environmental compliance. ec opack ? specifications, grade definitions and product status are available at: www.st.com . ecopack ? is an st trademark. 4.1 so16 package information figure 11 : plastic so16 package mechanical outline docid001933 rev 2 15/ 19 p o 1 3 h
package information m74hc259 table 9: plastic so16 package mechanical data dimensions mm. inches min. typ. max. min. typ. max. a 1.75 0.068 a1 0.1 0.2 0.003 0.007 a2 1.65 0.064 b 0.35 0.46 0.013 0.018 b1 0.19 0.25 0.007 0.010 c 0.5 0.019 c1 45 (typ.) d 9.8 10 0.385 0.393 e 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 8.89 0.350 f 3.8 4.0 0.149 0.157 g 4.6 5.3 0.181 0.208 l 0.5 1.27 0.019 0.050 m 0.62 0.024 s 8 (max.) 16/ 19 docid001933 rev 2
m74hc259 package information 4.3 tssop16 package information figure 12 : tssop16 package mechanical outline table 10: tssop16 package mechanical data dimensions mm. inches min. typ. max. min. typ. max. a 1.2 0.047 a1 0.05 0.15 0.002 0.004 0.006 a2 0.8 1 1.05 0.031 0.039 0.041 b 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.0089 d 4.9 5 5.1 0.193 0.197 0.201 e 6.2 6.4 6.6 0.244 0.252 0.260 e1 4.3 4.4 4.48 0.169 0.173 0.176 e 0.65 bsc 0.0256 bsc k 0 8 0 8 l 0.45 0.60 0.75 0.018 0.024 0.030 docid001933 rev 2 17/ 19 c e b a 2 a e 1 d 1 a 1 l k e 0 0 8 0 3 3 8 d pi n 1 i d en t i f i c a t io n
revision history m74hc259 5 revision history table 11: document revision history date version change jul - 2001 1 initial release 01- nov -2013 2 added esd performance to section "features" added automotive grade order codes, temperature ranges and marking information to table 1: "device summary" removed dip16 package option revised document presentation, minor textual updates 18/ 19 docid001933 rev 2
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