HCC4054B/55B/56B HCF4054B/55B/56B

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1 HCC454B/55B/56B HCF454B/55B/56B LIQUID-CRYSTAL DISPLAY DRIERS 454B 4-SEGMENT DISPLAY DRIER - STROBED LATCH FUNCTION 455B BCD TO 7-SEGMENT DECODER/DRIER, WITH DIS- PLAY-FREQUENCY OUTPUT 456B BCD TO 7-SEGMENT DECODER/DRIER WITH STROBED LATCH FUNCTION. QUIESCENT CURRENT SPECIFIED TO 2 FOR HCC DEICE OPERATION OF LIQUID CRYSTALS WITH. COS/MOS CIRCUITS PROIDES ULTRA- LOW-POWER DISPLAYS EQUIALENT AC OUTPUT DRIE FOR LI-. QUID-CRYSTAL DISPLAYS-NO EXTERNAL CAPACITOR REQUIRED OLTAGE DOUBLING ACROSS DISPLAY [(DD EE) = 8)] RESULTS IN EFFECTIE 36 (p-p) DRIE ACROSS SELECTED DIS- PLAY SEGMENTS. LOW-OR HIGH-OUTPUT LEEL DC DRIE FOR OTHER TYPES OF DISPLAYS ON-CHIP LOGIC-LEEL CONERSION FOR. DIFFERENT INPUT AND OUTPUT-LEEL SWINGS FULL DECODING OF ALL INPUT COMBINA- TIONS : 9, L, H, P, A AND BLANK POSI- TIONS INPUT CURRENT OF na AT 8 AND 25 C. FOR HCC DEICE % TESTED FOR QUIESCENT CURRENT MEETS ALL REQUIREMENTS OF JEDEC TEN- TATIE STANDARD N. 3A, STANDARD SPECIFICATIONS FOR DESCRIPTION OF B SERIES CMOS DEICES DESCRIPTION The HCC454B, HCC455B and HCC456B (extended temperature range) and the HCF454B, HCF455B and HCF456B (intermediate temperature range) are monolithic integrated circuits available in 6-lead dual in-line plastic or ceramic package and plastic micro package. The HCC/HCF455B and HCC/HCF456B types are single-digit BCD-to-7-segment decoder/driver circuits that provide level-shifting functions on the chip. This feature permits the BCD input-signal swings (DD to SS) to be the same as March 989 EY (Plastic Package) M (Micro Package) F (Ceramic Frit Seal Package) C (Plastic Chip Carrier) ORDER CODES : HCC4XXBF HCF4XXBM HCF4XXBEY HCF4XXBC or different from the 7-segment output-signal swings ( DD to EE ). For example, the BCD input-signal swings (DD to SS) may be as low as to 3, whereas the output-display drive-signal swing (DD to EE ) may be from to 5. If DD to EE exceeds 5, DD to SS should be at least 4. The 7-segment 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 8 out of phase with the DF input. Those segments which are not selected 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 3Hz (well above flicker rate) to 2Hz (well below the upper limit of the liquid-crystal frequency response). The HCC/HCF455B provides a levelshifted high-amplitude DF output which is required for driving the common electrode in liquid-crystal displays. The HCC/HCF456B provides a strobedlatch function at the BCD inputs. Decoding of all input combinations on the HCC/HCF455B and HCC/HCF456B provides displays of to 9 as well /5

2 HCC/HCF454B/55B/56B as L, P, H, A,, and a blank position. (see typical application for other letters). The HCC/HCF454B provides level shifting similar to the HCC/HCF455B and HCC/HCF456B independently strobed latches, and common DF control on 4 signal lines. The HCC/HCF454B is intended to provide drive-signal compatibility with the HCC/HCF455B and HCC/HCF456B 7-segment decoder types for the decimal point, colon, polarity, and similar display lines. A level-shifted high-amplitude DF output can be obtained from any HCC/HCF454B output line by connecting the corresponding input and strobe lines to a low and high level, respectively. The HCC/HCF454B may also be utilized for logic-level up conversion or down conversion. Forexample, input-signal swings (DD to SS) from + 5 to can be converted to output-signal swings ( DD to EE )of + 5 to 5. The level-shifted function on all three types permits the use of different input-and outputsignal swings. The input swings from a low level of SS to a high level of DD while the output swings from a low level of EE to the same high level of DD. Thus, the input and output swings can be selected independently of each other over a 3-to-8 range. SS may be connected to EE when no level-shift function is required. For the HCC/HCF 454B and HCC/HCF 456B, 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 segments remain selected (or non-selected) while the strobe is low. Whenever the level-shifting function is required, the HCC/HCF455B can be used by itself to drive a liquid-crystal display (fig. and fig. 2). The HCC/HCF456B, however, must be used together with a HCC/HCF454B to provide the common DF output (fig. 4). 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.. Fig. 9 is common to all three types. PIN CONNECTIONS 454B 455B 456B 2/5

3 HCC/HCF454B/55B/56B FUNCTIONAL DIAGRAMS 454B 455B 456B 3/5

4 HCC/HCF454B/55B/56B ABSOLUTE MAXIMUM RATINGS Symbol Parameter alue Unit DD * Supply oltage : HCC HCF.5 to to + 8 i Input oltage.5 to DD +.5 I I DC Input Current (any one input) ± ma P tot Total Power Dissipation (per package) Dissipation per Output Transistor for T op = Full Package-temperature Range 2 mw mw T op Operating Temperature : HCC HCF 55 to to+85 T stg Storage Temperature 65 to + 5 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 SS pin voltage. C C RECOMMENDED OPERATING CONDITIONS Symbol Parameter alue Unit DD Supply oltage : HCC HCF 3to8 3to5 I Input oltage to DD T op Operating Temperature : HCC HCF 55to25 4to85 C C TRUTH TABLE 455 B and 456 B Data Setup Time and Strobe Pulse Duration. Input Code Output State a b c d e f g Display Character L H P A BLANK 4/5

5 HCC/HCF454B/55B/56B STATIC ELECTRICAL CHARACTERISTICS (over recommended operating conditions) Symbol I L OH OL IH IL I OH I OL I IH,I IL ** Parameter Quiescent Supply Current Output High oltage Output Low oltage Input High oltage Input Low oltage Output High Current Output Low Current Input Leakage Current HCC HCF HCC HCF HCC HCF HCC HCF Test Conditions alue EE I O SS DD T Low * 25 C T High * () () () () () Min. Max. Min. Typ. Max. Min. Max. 5 / /.4 3 / / / / / / / / / / / / / / / / / / / / / / / / / / / / / /8 8 ±. ± 5 ±. ± /5 5 ±.3 ± 5 ±.3 ± C I ** Input Capacitance pf * T Low = 55 CforHCC device : 4 C forhcf device. * T High = 25 C frhcc device : + 85 C for HCF device. The Noise Margin for both and level is : min. with DD = 5, 2 min. with DD =, 2.5 min. with DD = 5. ** Any input. Unit µa ma ma µa µa 5/5

6 HCC/HCF454B/55B/56B DYNAMIC ELECTRICAL CHARACTERISTICS (T amb =25 C, C L = 5pF, R L = 2kΩ, typical temperature coefficient for all DD values is.3%/ C, all input rise and fall times = 2ns) Test Conditions Symbol Parameter EE () SS () DD () 454B 455B, 456B Min. Typ. Max. Min. Typ. Max. Unit t PHL,t PLH Propagation Delay Time (any input to any output) t THL,t TLH Transition Time (any output) t setup * Data Setup Time t W * Strobe Pulse Width * HCC/HCF454B and HCC/HCF456B only ns ns ns ns Figure : Typical Output Low (sink) Current Characteristics. Figure 2 : Minimum Output High (source) Current Characteristics. 6/5

7 HCC/HCF454B/55B/56B 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 454B). Figure 6 : Typical Propagation Delay Time vs. Load Capacitance (for 455B and 456B). Figure 7 : Typical Transition Time vs. Load Capacitance. Figure 8 : Typical Dynamic Power Dissipation vs. Frequency. 7/5

8 HCC/HCF454B/55B/56B TYPICAL APPLICATIONS Figure 9 : Display-driver Circuit for one Segment Line and Waveforms. (a) (b) Figure : Clock Display. Figure : Digital ( to + 5) to bidirectional Analog Control (+ 5 to 5) Level Shifter. DD =, SS = 5, EE = 5, F IN = 3 Hz square wave. 8/5

9 HCC/HCF454B/55B/56B TYPICAL APLLICATIONS (continued) Figure 2 : Single-digit Liquid Crystal Display. BCD IN FROM DTL, TTL, OR COS/MOS LOGIC OPTION DD SS 5 EE 5 OPTION 2 DD +5 SS EE Figure 3 : Conversion of H Display to F Display. 9/5

10 HCC/HCF454B/55B/56B TYPICAL APLLICATIONS (continued) Figure 4 : Typical 3 / 2 Digit crystal Display : ( DD =+5, SS =, EE =, DF N = 3 Hz square). In addition to the letters L, H, P, and A, five other letters can be displayed through the use of simple logic circuits preceding and following the HCC/HCF455B or HCC/HCF456B devices. Fig. 3 is an example of a circuit that converts an H display, (code ) to an F display. One condition that must be met is that EE =SS. IfEE SS, the HCC/HCF454B 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 exclusive-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,, 6,,, and 5, respectively, when there is preknowledge that only letters are to be displayed. /5

11 HCC/HCF454B/55B/56B Plastic DIP6 (.25) MECHANICAL DATA DIM. mm inch MIN. TYP. MAX. MIN. TYP. MAX. a.5.2 B b.5.2 b.25. D E e e F I 5..2 L Z.27.5 PC /5

12 HCC/HCF454B/55B/56B Ceramic DIP6/ MECHANICAL DATA DIM. mm inch MIN. TYP. MAX. MIN. TYP. MAX. A B D E.38.5 e F G H L M N.3.46 P Q P53D 2/5

13 HCC/HCF454B/55B/56B SO6 (Narrow) MECHANICAL DATA DIM. mm inch MIN. TYP. MAX. MIN. TYP. MAX. A a a b b C.5.9 c 45 (typ.) D E e.27.5 e F G L M S 8 (max.) P3H 3/5

14 HCC/HCF454B/55B/56B PLCC2 MECHANICAL DATA DIM. mm inch MIN. TYP. MAX. MIN. TYP. MAX. A B D d d E e.27.5 e F.38.5 G..4 M.27.5 M.4.45 P27A 4/5

15 HCC/HCF454B/55B/56B 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. Specificationsmentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronicsproducts are not authorized foruse ascritical componentsin life support devices or systems without express written approval of SGS-THOMSON Microelectonics. 994 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 5/5