(fullpackage-temperature range), 100nA AT18V
AND 25oC
.NOISE MARGIN (full package-temperature
range)= 1VATVDD=5V, 2VATVDD=10V,2.5V
AT VDD=15V
.5V, 10V,AND 15V PARAMETRIC RATINGS
.MEETSALLREQUIREMENTSOFJEDECTEN-
TATIVE STANDARD N. 13A, ” STANDARD
SPECIFICATIONS FOR DESCRIPTION OF ’ B
’ SERIES CMOS DEVICES”
APPLICATION
HCC4724B
HCF4724B
8 BIT ADDRESSABLE LATCH
EY
(PlasticPackage)
M1
(MicroPackage)
ORDER CODES :
HCC4 724BFHCF4724BM1
HCF4724BEYHCF4724BC1
(CeramicPackage)
F
C1
(Chip Carrier)
.MULTI-LINEDECODERS
.A/D CONVERTERS
DESCRIPTION
The HCC/HCF4724B 8-bit addressable latch is a
serial-input,parallel-output storageregisterthatcan
perform avariety of functions.
Dataare inputted toa particular bitin thelatchwhen
thatbitis addressed(bymeansofinputsA0,A1,A2)
and when WRITE DISABLE is at low level. When
WRITE DISABLE is high, data entry is inhibited
however, all 8 outputscan be continuously read independent ofWRITEDISABLE andaddress inputs.
A masterRESET input is available, whichresets all
bits to a logic” 0” levelwhen RESET and WRITE
DISABLE are at a highlevel.When RESETis at a
highlevel, andWRITEDISABLE isata lowlevel,the
latch acts as a 1-of-8 demultiplexer ; the bit that is
addressed has an active output which follows the
data input, while allunaddressed bits areheld to a
logic ” 0” level.
PIN CONNECTIONS
September 1988
1/14
HCC/HCF4724B
FUN CTION AL DIAG R A M
ABSOLU TE M AXIMU M R AT ING
SymbolParameterValueUnit
V
*Supply Voltage: HCC Types
DD
HCF Types
V
P
Input Voltage-0.5 to VDD+ 0.5V
i
I
DC Input Current (any oneinput)± 10mA
I
Total Power Dissipation (per package)
tot
Dissipation per Output Transistor
for Top = Full Package Temperature Range
T
Operating Temperature: HCC Types
op
HCF Types
T
Stressesabove those listedunder”Absolute Maximum Ratings”maycausepermanent damagetothedevice. Thisisa stressratingonlyand functional
operation of the device atthese oranyotherconditions above thoseindicated in theoperational sections of thisspecification is not implied.Exposure
to absolute maximum ratingconditions forexternal periodsmay affectdevice reliability.
* All voltagevalues are referred toVSSpinvoltage.
Storage Temperature-65 to +150
stg
-0.5 to +20
-0.5 to +18
200
100
-55 to +125
-40 to +85
V
V
mW
mW
o
C
o
C
o
C
RECO MM ENDED OPERAT I N G CO NDI TIONS
SymbolParameterValueUnit
V
V
T
2/14
Supply Voltage: HCC Types
DD
HCF Types
Input Voltage0 to V
I
Operating Temperature: HCC Types
op
HCF Types
3to18
3to15
DD
-55 to +125
-40 to +85
V
V
V
o
C
o
C
LOGI C DI AGRAM
HCC/HCF4724B
Defini ti on o f WRITE DISA BL E ON Ti me
MODE SELECTION
TYPEWDR
A00Follows DataHold Previous
B01Follows Data
C10Hold Previous State
D11Reset to ”0”Reset to ”0”
WD = WRITE DISABLE R= RESET
Addressed
Latch
(Active High
8-Channel
Demultiplexer)
Unaddressed
Latch
State
Reset to ”0”
3/14
HCC/HCF4724B
STATI C ELE CT RIC AL CHA R ACTE R ISTI CS (ove r recom mended oper a ting co ndi tions )