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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

–V

) = 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 ALLREQUIREMENTS OF JEDECTEN-

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

(Plastic Package)

(Ceramic Frit SealPackage)

(Micro Package)

(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

to V

) to be the same as

or different from the 7-segmentoutput-signal swings

to V

). For example, the BCD input-signal

swings (V

to V

) may be as low as 0 to – 3V,

whereas the output-display drive-signal swing (V

to V

) may be from 0to – 5V.If V

toV

exceeds

15V, V

to V

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 below 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

1 2 3 4 5 6 ... 14 15

Summary of Contents

Page 1 - HCF4054B/55B/56B

HCC4054B/55B/56BHCF4054B/55B/56BLIQUID-CRYSTAL DISPLAY DRIVERSDESCRIPTION.QUIESCENT CURRENT SPECIFIED TO 20VFOR HCC DEVICE.OPERATION OF LIQUID CRYSTAL

Page 2

TYPICAL APLLICATIONS (continued)Figure 14 : Typical31/2– Digit–crystal Display : (VDD=+5V,VSS= 0V, VEE= – 10V, DFN= 30 Hz square).In addition to the l

Page 3

Plastic DIP16 (0.25) MECHANICAL DATADIM.mm inchMIN. TYP. MAX. MIN. TYP. MAX.a1 0.51 0.020B 0.77 1.65 0.030 0.065b 0.5 0.020b1 0.25 0.010D 20 0.787E 8.

Page 4

Ceramic DIP16/1 MECHANICAL DATADIM.mm inchMIN. TYP. MAX. MIN. TYP. MAX.A 20 0.787B 7 0.276D 3.3 0.130E 0.38 0.015e3 17.78 0.700F 2.29 2.79 0.090 0.110

Page 5

SO16 (Narrow) MECHANICAL DATADIM.mm inchMIN. TYP. MAX. MIN. TYP. MAX.A 1.75 0.068a1 0.1 0.2 0.004 0.007a2 1.65 0.064b 0.35 0.46 0.013 0.018b1 0.19 0.2

Page 6

PLCC20 MECHANICAL DATADIM.mm inchMIN. TYP. MAX. MIN. TYP. MAX.A 9.78 10.03 0.385 0.395B 8.89 9.04 0.350 0.356D 4.2 4.57 0.165 0.180d1 2.54 0.100d2 0.5

Page 7

Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for theconsequences of

Page 8

PIN CONNECTIONS4054B 4055B 4056Bas L, P, H, A,– , and a blank position. (see typical ap-plication for other letters). The HCC/HCF4054B pro-vides level

Page 9

FUNCTIONAL DIAGRAMS4054B4055B4056BHCC/HCF4054B/55B/56B3/15

Page 10 - HCC/HCF4054B/55B/56B

ABSOLUTE MAXIMUM RATINGSSymbol Parameter Value UnitVDD* Supply Voltage : HCC TypesHCF Types– 0.5 to + 20– 0.5 to + 18VVViInput Voltage – 0.5 to VDD+ 0

Page 11

STATIC ELECTRICAL CHARACTERISTICS (over recommended operating conditions)Test Conditions ValueVEEVIVOVSSVDDTLow* 25°CTHigh*Symbol Parameter(V) (V) (V)

Page 12

DYNAMIC ELECTRICAL CHARACTERISTICS (Tamb=25°C, CL= 50pF, RL= 200kΩ,typical temperature coefficient for all VDDvalues is 0.3%/°C, all input rise and fa

Page 13 - SO16 (Narrow) MECHANICAL DATA

Figure 3 : Typical Output High (source) CurrentCharacteristics.Figure 4 : Minimum Output (source) CurrentCharacteristics.Figure 5 : Typical Propagatio

Page 14 - PLCC20 MECHANICAL DATA

TYPICAL APPLICATIONSFigure 9 : Display-driver Circuit for one Segment Line and Waveforms.(a)(b)Figure 10 : Clock Display. Figure 11 : Digital(0 to+ 5V

Page 15

TYPICAL APLLICATIONS (continued)Figure 12 : Single-digit Liquid Crystal Display.BCD IN FROMDTL, TTL, ORCOS/MOS LOGICOPTION 1VDD0VVSS–5VVEE–15VOPTION 2

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