1-OF-10 DECODER These devices identical pinout 54/74LS42. Data in

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1-OF-10 DECODER These devices identical pinout 54/74LS42. Data in

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GD54/74HC42, GD54/74HCT42
1-OF-10 DECODER
These devices identical pinout 54/74LS42. Data input pins select outputs corresponding value number inputs. output will when selected, otherwise remains high. input data valid number, i.e., hexadecimal equivalent greater than outputs will remain high. These devices characterized operation over wide temperature ranges meet industry military specifications
Power consumption characteristic CMOS devices
Output drive capability: Loads Min.
Operating speed superior
Wide operating voltage range: volts
volts
input current: Max.
quiescent current: 80(jA Max. (74HC)
High noise immunity characteristic CMOS
Diode protection inputs
Function Table
Configuration
Y0|JL
Y2(T
Ys[T
W]Y8
Suffix-Blank Plastic Dual Line Package Suffix-J Ceramic Dual Line Package
Suffix-D Small Outline Package
inputs outputs
HIGH voltage level voltage level
4-71
This Material Copyrighted Respective Manufacturer
GD54/74HC42, GD54/74HCT42
Absolute Maximum Ratings
SYMBOL PARAMETER CONDITIONS MIN. UNIT
Supply voltage -0.5
input output diode current V,>VCC 0.5V |20|
output source sink current V<V0<VCC +0.5 |35|
current |70|
Tstg Storage temperature range
Power dissipation package above derate linearly with 8mW/K
Lead temperature distance from case sec(CERAMIC) sec(PLASTIC)
Recommended Operating Conditions
CHARACTERISTIC LIMITS UNITS
MAX.
Supply-Voltage Range Vcc: GD54/74HC Types GD54/74HCT Types
Input Output Voltage
Operating Temperature GD74 Types GD54 Types
Input Rise Fall times GD54/74HC Types 4.5V GD54/74HCT Types 1000
Fig. Logic diagram
4-72
This Material Copyrighted Respective Manufacturer
GD54/74HC42, GD54/74HCT42
Electrical Characteristics
SYMBOL PARAMETER TEST CONDITION GD74HC42 UNIT
MIN. TYP. MAX. MIN. MIN.
HIGH level input Voltage 3.15 3.15 3.15
level input voltage 0.'3
HIGH level output voltage
lOH=-4mA l0H= -5.2mA 3.98 5.48 3.84 5.34
level output voltage lOL=20MA
l0L=52mA 0.15 0.26 0.26
Input leakage Current
Quiescent Supply Current 'out
Electrical Characteristics
SYMBOL PARAMETER TEST CONDITION GD74HCT42 GD54HCT42 UNIT
MIN. TYP. MAX. MIN.
HIGH level input Voltage
level input voltage
HIGH level output voltage l0h=-20MA
-4mA 3.98 3.84
level output voltage 20HA
Iql= 0.33
I'INI Input leakage Current
Quiescent Supply Current
4-73
This Material Copyrighted Respective Manufacturer
_GD54/74HC42, GD54/74HCT42
Characteristics tr=t,=6ns CL=50pF
SYMBOL PARAMETER GD74HC42 GD54HC42 UNIT
MIN. TYP. MAX. MIN. MAX. MIN. MAX.
'plh/ tphl Propagation delay time
'tlh/
Output transition time
Characteristics HCT: tr=t,=6ns CL=50pF
SYMBOL PARAMETER GD74HCT42 GD54HCT42 UNIT
MIN. TYP. MAX. MIN. MAX. MIN. MAX.
'plh/ 'pHL Propagation delay time
'tlh/ 'thl Output transition time
Waveforms
Fig. Waveforms showing input (An) output (Yn) propagation delays output transition times.
Note waveforms
V,=GND HCT: ,3V;
4-74
This Material Copyrighted Respective Manufacturer

1-OF-10 DECODER These devices identical pinout 54/74LS42. Data in

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