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hcc4054b/55b/56b hcf4054b/55b/56b liquid-crystal display drivers description . quiescent current specified to 20v for hcc device . operation of liquid crystals with cos/mos circuits provides ultra- low-power displays . equivalent ac output drive for li- quid-crystal displays-no external capacitor required . voltage doubling across display [(v dd ?v ee ) = 18v)] results in effective 36v (p-p) drive across selected dis- play segments . low-or high-output level dc drive for other types of displays . on-chip logic-level conversion for different input and output-level swings . full decoding of all input combina- tions : ?0 ? 9, l, h, p, a? ? and blank posi- tions . input current of 100na at 18v and 25 c for hcc device . 100% tested for quiescent current . meets all requirements of jedec ten- tative standard n . 13a, ?standard specifications for description of ?b? series cmos devices? 4054b 4-segment display driver - strobed latch function 4055b bcd to 7-segment decoder/driver, with ?dis- play-frequency? output 4056b bcd to 7-segment decoder/driver with strobed latch function march 1989 ey (plastic package) f (ceramic frit seal package) m1 (micro package) c1 (plastic chip carrier) order codes : hcc40xxbf hcf40xxbm1 hcf40xxbey hcf40xxbc1 the hcc4054b , hcc4055b and hcc4056b (ex- tended temperature range) and the hcf4054b, hcf4055b and hcf4056b (intermediate tempera- ture range) are monolithic integrated circuits available in 16-lead dual in-line plastic or ceramic package and plastic micro package. the hcc/hcf4055b and hcc/hcf4056b types are single-digit bcd-to-7-seg- ment decoder/driver circuits that provide level-shifting functions on the chip. this feature permits the bcd input-signal swings (v dd to v ss ) to be the same as or different from the 7-segment output-signal swings (v dd to v ee ). for example, the bcd input-signal swings (v dd to v ss ) may be as low as 0 to ? 3v, whereas the output-display drive-signal swing (v dd to v ee ) may be from 0 to ? 5v. if v dd to v ee exceeds 15v, v dd to v ss should be at least 4v. the 7-seg- ment outputs are controlled by the display-fre- quency (df) input which causes the selected segment outputs to be low, high, or a square-wave output (for liquid-crystal displays). when the df input is low the output segments will be high when selected by the bcd inputs. when the df input is high, the output segments will be low when selected by the bcd inputs. when a square-wave is present at the df input, the selected segments will have a square-wave output that is 180 out of phase with the df input. those segments which are not se- lected will have a square-wave output that is in phase with the input. df square-wave repetition rates for liquid-crystal displays usually range from 30hz (well above flicker rate) to 200hz (well below the upper limit of the liquid-crystal frequency re- sponse). the hcc/hcf4055b provides a level- shifted high-amplitude df output which is required for driving the common electrode in liquid-crystal displays. the hcc/hcf4056b provides a strobed- latch function at the bcd inputs. decoding of all input combinations on the hcc/hcf4055b and hcc/hcf4056b provides displays of 0 to 9 as well 1/15
pin connections 4054b 4055b 4056b as l, p, h, a,? , and a blank position. (see typical ap- plication for other letters). the hcc/hcf4054b pro- vides level shifting similar to the hcc/hcf4055b and hcc/hcf4056b independently strobed latches, and common df control on 4 signal lines. the hcc/hcf4054b is intended to provide drive-signal compatibility with the hcc/hcf4055b and hcc/hcf4056b 7-segment decoder types for the decimal point, colon, polarity, and similar display lines. a level-shifted high-amplitude df output can be ob- tained from any hcc/hcf4054b output line by con- necting the corresponding input and strobe lines to a low and high level, respectively. the hcc/hcf4054b may also be utilized for logic-level ?up conversion? or ?down conversion?. forexample, input-signal swings (v dd to v ss ) from + 5 to 0v can be converted to output-signal swings (v dd to v ee )of + 5 to ? 5v. the level-shifted function on all three types permits the use of different input-and output- signal swings. the input swings from a low level of v ss to a high level of v dd while the output swings from a low level of v ee to the same high level of v dd . thus, the input and output swings can be selected independently of each other over a 3-to-18v range. v ss may be connected to v ee when no level-shift function is required. for the hcc/hcf 4054b and hcc/hcf 4056b , data are transferred from input to output by placing a high voltage level at the strobe input. a low voltage level at the strobe input latches the data input and the corresponding output seg- ments remain selected (or non-selected) while the strobe is low. whenever the level-shifting function is required, the hcc/hcf4055b can be used by it- self to drive a liquid-crystal display (fig. 10 and fig. 12). the hcc/hcf4056b , however, must be used together with a hcc/hcf4054b to provide the com- mon df output (fig. 14). the capability of extending the voltage swing on the negative end (this voltage cannot be extended on the positive end) can be used to advantage in the set-up of fig. 11. fig. 9 is common to all three types. hcc/hcf4054b/55b/56b 2/15
functional diagrams 4054b 4055b 4056b hcc/hcf4054b/55b/56b 3/15
absolute maximum ratings symbol parameter value unit v dd * supply voltage : hcc types hcf types ? 0.5 to + 20 ? 0.5 to + 18 v v v i input voltage ? 0.5 to v dd + 0.5 v i i dc input current (any one input) 10 ma p tot total power dissipation (per package) dissipation per output transistor for t op = full package-temperature range 200 100 mw mw t op operating temperature : hcc types hcf types ? 55 to + 125 ?40to+85 c c t stg storage temperature ? 65 to + 150 c recommended operating conditions symbol parameter value unit v dd supply voltage : hcc types hcf types 3to18 3to15 v v v i input voltage 0 to v dd v t op operating temperature : hcc types hcf types ?55to125 ?40to85 c c stresses above those listed under ?absolute maximum ratings? may cause permanent damage to the device. this is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. exposure to absolute maximum rating conditions for external periods may affect device reliability. * all voltage values are referred to v ss pin voltage. truth table 4055 b and 4056 b input code output state 2 3 2 2 2 1 2 0 abcde fg display character 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 1 0 1 1 0 1 1 1 1 1 0 0 1 1 0 0 1 1 1 1 1 0 0 1 1 1 0 1 1 1 0 0 1 1 0 1 1 1 1 1 1 1 0 1 0 1 0 0 1 0 1 1 0 1 1 0 1 1 1 0 0 0 0 0 1 0 1 0 0 0 1 0 1 0 1 1 1 1 0 0 1 0 0 0 1 1 1 0 1 1 1 1 1 1 0 0 0 0 1 1 1 1 1 0 1 1 0 1 1 1 1 0 0 1 2 3 4 5 6 7 8 9 l h p a ? blank data setup time and strobe pulse duration. hcc/hcf4054b/55b/56b 4/15
static electrical characteristics (over recommended operating conditions) test conditions value v ee v i v o v ss v dd t low * 25 ct high * symbol parameter (v) (v) (v) (v) (v) min. max. min. typ. max. min. max. unit i l quiescent supply current hcc types ? 5 0/5 0 5 5 0.04 5 150 0 0/10 0 10 10 0.04 10 300 0 0/15 0 15 20 0.04 20 600 0 0/20 0 20 100 0.08 100 3000 hcf types ? 5 0/5 0 5 20 0.04 20 150 0 0/10 0 10 40 0.04 40 300 0 0/15 0 15 80 0.04 80 600 a v oh output high voltage 0 0/5 0 5 4.95 4.95 4.95 v 0 0/10 0 10 9.95 9.95 9.95 0 0/15 0 15 14.95 14.95 14.95 v ol output low voltage 0 5/0 0 5 0.05 0.05 0.05 v 0 10/0 0 10 0.05 0.05 0.05 0 15/0 0 15 0.05 0.05 0.05 v ih input high voltage ?5 0.5/4.5 0 5 3.5 3.5 3.5 v 0 1/9 0 10 7 7 7 0 1.5/13.5 01511 11 11 v il input low voltage 5 0.5/4.5 0 5 1.5 1.5 1.5 v 0 9/1 0 10 3 3 3 0 1.5/13.5 015 4 4 4 i oh output high current hcc types ? 5 0/5 4.5 0 5 ? 0.6 ? 0.45 ? 0.9 ? 0.3 0 0/10 9.5 0 10 ? 0.6 ? 0.45 ? 0.9 ? 0.3 0 0/15 13.5 0 15 ? 1.9 ? 1.5 ? 3 ? 1.1 hcf types ? 5 0/5 4.5 0 5 ? 0.47 ? 0.38 ? 0.9 ? 0.28 0 0/10 9.5 0 10 ? 0.47 ? 0.38 ? 0.9 ? 0.28 0 0/15 13.5 0 15 ? 1.58 ? 1.27 ? 3 ? 0.95 ma i ol output low current hcc types ? 5 0/5 0.4 0 5 1.6 1.3 2.6 0.9 ma 0 0/10 0.5 0 10 1.6 1.3 2.6 0.9 0 0/15 1.5 0 15 4.2 3.4 6.8 2.4 hcf types ? 5 0/5 0.4 0 5 1.37 1.1 2.6 0.82 0 0/10 0.5 0 10 1.37 1.1 2.6 0.82 0 0/15 1.5 0 15 3.62 2.9 6.8 2.17 i ih ,i il ** input leakage current hcc types 0 0/18 0 18 0.1 10 ?5 0.1 1 hcf types 0 0/15 0 15 0.3 10 ?5 0.3 1 a a c i ** input capacitance 5 7.5 pf *t low =?55 cfor hcc device : ? 40 cfor hcf device. *t high = 125 cfr hcc device : + 85 c for hcf device. the noise margin for both ?1? and ?0? level is : 1v min. with v dd = 5v, 2v min. with v dd = 10v, 2.5 v min. with v dd = 15v. ** any input. hcc/hcf4054b/55b/56b 5/15
dynamic electrical characteristics (t amb =25 c, c l = 50pf, r l = 200k ? , typical temperature coefficient for all v dd values is 0.3%/ c, all input rise and fall times = 20ns) test conditions types 4054b 4055b, 4056b symbol parameter v ee (v) v ss (v) v dd (v) min. typ. max. min. typ. max. unit t phl ,t plh propagation delay time (any input to any output) ? 5 0 5 400 800 650 1300 ns 0 0 10 340 680 575 1150 0 0 15 250 500 375 750 t thl ,t tl h transition time (any output) ? 5 0 5 100 200 100 200 ns 0 0 10 100 200 100 200 0 0 15 75 150 75 150 t se tup * data setup time ? 5 0 5 220 110 220 110 ns 0 0 10 100 50 100 50 0 0 15 70 35 70 35 t w * strobe pulse width ? 5 0 5 220 110 220 110 ns 0 0 10 100 50 100 50 0 0 15 70 35 70 35 * hcc/hcf4054b and hcc/hcf4056b only. figure 1 : typical output low (sink) current characteristics. figure 2 : minimum output high (source) current characteristics. hcc/hcf4054b/55b/56b 6/15
figure 3 : typical output high (source) current characteristics. figure 4 : minimum output (source) current characteristics. figure 5 : typical propagation delay time vs. load capacitance (for 4054b). figure 6 : typical propagation delay time vs. load capacitance (for 4055b and 4056b). figure 7 : typical transition time vs. load capa- citance. figure 8 : typical dynamic power dissipation vs. frequency. hcc/hcf4054b/55b/56b 7/15
typical applications figure 9 : display-driver circuit for one segment line and waveforms. (a) (b) figure 10 : clock display. figure 11 : digital (0 to + 5v) to bidirectional analog control (+ 5 to ? 5v) level shifter. v dd = 0v, v ss = ? 5v, v ee = ? 15v, f in = 30 hz square wave. hcc/hcf4054b/55b/56b 8/15
typical apllications (continued) figure 12 : single-digit liquid crystal display. bcd in from dtl, ttl, or cos/mos logic option 1 v dd 0v v ss ?5v v ee ?15v option 2 v dd +5v v ss 0v v ee ? 10v figure 13 : conversion of ?h? display to ?f? display. hcc/hcf4054b/55b/56b 9/15
typical apllications (continued) figure 14 : typical 3 1 / 2 ? digit?crystal display : (v dd =+5v,v ss = 0v, v ee = ? 10v, df n = 30 hz square). in addition to the letters l, h, p, and a, five other let- ters can be displayed through the use of simple logic circuits preceding and following the hcc/hcf4055b or hcc/hcf4056b devices. fig. 13 is an example of a circuit that converts an ?h? display, (code 1011) to an ?f? display. one condition that must be met is that v ee =v ss .ifv ee v ss ,the hcc/hcf4054b must be used to level shift in the appropriate places. in a similar manner the letters c, e, j,and u can be displayed. these circuits can also be used to drive led displays provided the exclu- sive-or gates have sufficient output-current drive. the letters b, d, g, i, o, and s may be represented by the codes for numbers 8, 0, 6, 1, 0, and 5, respec- tively, when there is preknowledge that only letters are to be displayed. hcc/hcf4054b/55b/56b 10/15
plastic dip16 (0.25) mechanical data dim. mm inch min. typ. max. min. typ. max. a1 0.51 0.020 b 0.77 1.65 0.030 0.065 b 0.5 0.020 b1 0.25 0.010 d 20 0.787 e 8.5 0.335 e 2.54 0.100 e3 17.78 0.700 f 7.1 0.280 i 5.1 0.201 l 3.3 0.130 z 1.27 0.050 p001c hcc/hcf4054b/55b/56b 11/15
ceramic dip16/1 mechanical data dim. mm inch min. typ. max. min. typ. max. a 20 0.787 b 7 0.276 d 3.3 0.130 e 0.38 0.015 e3 17.78 0.700 f 2.29 2.79 0.090 0.110 g 0.4 0.55 0.016 0.022 h 1.17 1.52 0.046 0.060 l 0.22 0.31 0.009 0.012 m 0.51 1.27 0.020 0.050 n 10.3 0.406 p 7.8 8.05 0.307 0.317 q 5.08 0.200 p053d hcc/hcf4054b/55b/56b 12/15
so16 (narrow) mechanical data dim. mm inch min. typ. max. min. typ. max. a 1.75 0.068 a1 0.1 0.2 0.004 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 s8 (max.) p013h hcc/hcf4054b/55b/56b 13/15
plcc20 mechanical data dim. mm inch min. typ. max. min. typ. max. a 9.78 10.03 0.385 0.395 b 8.89 9.04 0.350 0.356 d 4.2 4.57 0.165 0.180 d1 2.54 0.100 d2 0.56 0.022 e 7.37 8.38 0.290 0.330 e 1.27 0.050 e3 5.08 0.200 f 0.38 0.015 g 0.101 0.004 m 1.27 0.050 m1 1.14 0.045 p027a hcc/hcf4054b/55b/56b 14/15
information furnished is believed to be accurate and reliable. however, sgs-thomson microelectronics assumes no responsability for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. no license is granted by implication or otherwise under any patent or patent rights of sgs-thomson microelectronics. specifications mentioned in this publication are subject to change without notice. this publication supersedes and replaces all information previously supplied. sgs-thomson microelectronics products are not authorized for use ascritical components in life support devices or systems without express written approval of sgs-thomson microelectonics. ? 1994 sgs-thomson microelectronics - all rights reserved sgs-thomson microelectronics group of companies australia - brazil - france - germany - hong kong - italy - japan - korea - malaysia - malta - morocco - the netherlands - singapore - spain - sweden - switzerland - taiwan - thailand - united kingdom - u.s.a hcc/hcf4054b/55b/56b 15/15

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