M54HC42 M74HC42 BCD-TO-DECIMAL DECODER HIGH SPEED (TYP.

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M54HC42 M74HC42 BCD-TO-DECIMAL DECODER HIGH SPEED (TYP.

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-THOMSON
M54HC42 M74HC42
BCD-TO-DECIMAL DECODER
HIGH SPEED
(TYP.) VCc=
POWER DISSIPATION (MAX.)
HIGH NOISE IMMUNITY VNIH VN|L (MIN.)
OUTPUT DRIVE CAPABILITY LSTTL LOADS
SYMMETRICAL OUTPUT IMPEDANCE IIOHl (MIN.) BALANCED PROPAGATION DELAYS tpLH tpHL
WIDE OPERATING VOLTAGE RANGE (OPR)
FUNCTION COMPATIBLE WITH 54/74LS42
DESCRIPTION
M54/74HC42 high speed CMOS BCD-TO-DECIMAL DECODER fabricated silicon gate C2MOS technology.
same high speed performance LSTTL combined with true CMOS power consumption. code applied fourjnputs selects often decimal outputs Y0-Y9, which goes fifteen gives high level outputs. This device also used 3-to-8 LINE DECODER, when input assigned disable input. This device useful code conversion, address decoding, memory selection, demultiplexing, readout decoding.
inputs equipped with protection circuits against static discharge transient excess voltage.
Plastic Package Ceramic Frit Seal Package
Micro Package Plastic Chip Carrier
ORDERING NUMBERS:
M54HC42 M74HC42
M74HC42 M74HC42
M74HC42
CONNECTIONS (top view)
3vcc
UUULJU
nnnn
Internal Connection
October 1988
This Material Copyrighted Respective Manufacturer
M54/74HC42
LOGIC DIAGRAM
>-O-
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
Supply Voltage -0.5
Input Voltage -0.5
Output Voltage -0.5
Input Diode Current
Output Diode Current
Output Source Sink Current Output
'gno Ground Current
Power Dissipation
Tstg Storage Temperature
Absolute Maximum Ratings those values beyond which damage device occur. Functional operation these condition implied.
derate
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Value Unit
Supply Voltage
Input Voltage
Output Voltage
74HC Series Operating Temperature 54HC Series
Input Rise Fall Time 4.5V 1000
SCS-THOMSON
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This Material Copyrighted Respective Manufacturer
M54/74HC42
TRUTH TABLE
CODE INPUTS DECIMAL OUTPUTS
SPECIFICATIONS
Symbol Parameter Test Condition 54HC 74HC 54HC Unit
Min. Typ. Max. Min. Max. Min. Max.
High Level Input Voltage 3.15 3.15 3.15
Level Input Voltage 1.35 1.35 1.35
High Level Output Voltage
-4.0 -5.2 4.18 5.68 4.31 4.13 5.63 4.10 5.60
Level Output Voltage
0.17 0.18 0.26 0.26 0.33 0.33 0.40 0.40
Input Leakage Current
Quiescent Supply Current
SCS-THOMSON _3/5
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This Material Copyrighted Respective Manufacturer
M54/74HC42
ELECTRICAL CHARACTERISTICS (VCc CL=15pF, Input 6ns)
Symbol Parameter 54HC 74HC Unit
Min. Typ. Max.
tTLH t"THL Output Transition Time
tpLH 'PHL Propagation Delay Time
ELECTRICAL CHARACTERISTICS 50pF, Input 6ns)
Symbol Parameter Test Condition 54HC 74HC 74HC 54HC Unit
Min. Typ. Max. Min. Max. Min. Max.
Output
tthl Transition
Time
tpLH Propagation Delay
tpHL Time
Input Capacitance
Power Dissipation
Capacitance
Note defined value IC's internal equivalent capacitance which calculated from operating current consumption without load. (Refer Test Circuit)
Average operating current obtained following equation (Opr.)
SWITCHING CHARACTERISTICS TEST CIRCUIT
OUT- OF-PHASE OUTPUT
IN-PHASE OUTPUT
'THL
50*/.
-'TLH
90V.
10V.
-'TLH
'THL
-vOH
SCS-THOMSON
This Material Copyrighted Respective Manufacturer
M54/74HC42
TEST CIRCUIT (Opr.)
INPUT WAVEFORM SAME THAT CASE SWITCHING CHARACTERISTICS TEST.
SGS-TUOMSON _515
MSBOIiOJICTBO&SKeS
This Material Copyrighted Respective Manufacturer

M54HC42 M74HC42 BCD-TO-DECIMAL DECODER HIGH SPEED (TYP.

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