SGS Thomson Microelectronics HCF40147B Datasheet
10 TO 4 LINEBCD PRIORITY ENCODER
.ENCODES 10 LINE TO 4 LINEBCD
.ACTIVELOW INPUTSAND OUTPUTS
.STANDARDIZED, SYMMETRICAL OUTPUT
CHARACTERIZATION
.100 % TESTEDFOR QUIESCENT CURRENT
AT 20V
.5V, 10VAND 15VPARAMETRIC RATINGS
.MAXIMUMINPUTCURREENTOF 1µA AT18V
OVER FULL PACKAGE TEMPERATURE
RANGE;100 nA AT 18 VAND 25oC
.NOISE MARGIN (FULL PACKAGE TEMPERA-
TURERANGE): 1V AT VDD=5V, 2V AT
VDD=10V, 2.5VAT VDD= 15V
APPLICATIONS:
.KEYBOARD ENCODING
.10 LINE TO BCD ENCODING
.RANGE SELECTION
EY
(PlasticPackage)
M1
(MicroPackage)
HCC40147B
HCF 401 47 B
F
(CeramicPackage)
C1
(Chip Carrier)
DESCRIPT ION
The HCC/HCF40147B CMOS encoder features
priority encodingoftheinputstoensure thatonlythe
highest order data line is encoded. Ten data input
lines (0-9) are encoded to fourline (8, 4, 2, 1) BCD.
The highestpriority lineisline 9.Allfouroutputlines
arelogic 1 (VSS) when all input lines are logic0.All
inputs and outputs are buffered, and each output
can drive one TTL Low Power Schottky load. The
HCC/HCFF40147 is functionally similar to the
T54/T74LS147 if pin 15 istied low.
TheHCC/HCF40147B typesaresupplied in16lead
plasticor ceramic andplastic micropackage.
ORDER CODES :
HCC4 0147BF HCF40147BM1
HCF40147BE Y HCF40147BC1
PIN CONNECTIONS
April1991
1/12
HCC/HCF40147B
ABSOLU TE MAXIMUM RATING
Symbol Parameter Value Unit
V
* Supply Voltage: HCC Types
DD
HCF Types
V
P
Input Voltage -0.5 to VDD+ 0.5 V
i
I
DC Input Current (any one input) ± 10 mA
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. Thisisastressratingonlyandfunctional
operationofthe device attheseor anyother conditionsabove thoseindicated intheoperationalsections of thisspecification isnot implied.Exposure
to absolute maximum rating conditions forexternal periods may affect device reliability.
* Allvoltagevalues arereferredto VSSpinvoltage.
Storage Temperature -65 to +150
stg
RECO MM ENDED OPERAT I N G C O NDITI ONS
Symbol Parameter Value Unit
V
V
T
Supply Voltage: HCC Types
DD
HCF Types
Input Voltage 0 to V
I
Operating Temperature: HCC Types
op
HCF Types
-0.5 to +20
-0.5 to +18
200
100
-55 to +125
-40 to +85
3to18
3to15
DD
-55 to +125
-40 to +85
V
V
mW
mW
o
C
o
C
o
C
V
V
V
o
C
o
C
TRUTH TABLE
INPUT OUTPUTS
0123456789DCBA
00000000001111
10000000000000
X1000000000001
XX100000000010
XXX10000000011
XXXX1000000100
XXXXX100000101
XXXXXX10000110
XXXXXXX1000111
XXXXXXXX1 01000
XXXXXXXXX11001
0 = HighLevel, 1 = LowLevel, X =Don’tCare
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LOGI C DIAGRAM
HCC/HCF40147B
3/12
HCC/HCF40147B
STATI C ELECTRIC AL CHARACTER I STI CS (ove r recommended o perat i ng condit i o ns)
Test Conditios Value
Symbol Parameter
Quiescent
I
L
Current
HCC
Types
V
(V)
V
I
(V)
|IO|
(µA)
V
(V)
O
T
DD
*25
LOW
Min. Max. Min. Typ. Max. Min. Max.
0/5 5 1 0.02 1 30
0/10 10 2 0.02 2 60
0/15 15 4 0.02 4 120
o
CT
0/20 20 20 0.04 20 600
HCF
Types
0/5 5 4 0.02 4 30
0/10 10 8 0.02 8 60
0/15 15 16 0.02 16 120
OH
Output High
V
Voltage
0/5 < 1 5 4.95 4.95 4.95
0/10 < 1 10 9.95 9.95 9.95
0/15 < 1 15 14.95 14.95 14.95
OL
Output Low
V
Voltage
5/0 < 1 5 0.05 0.05 0.05
10/0 < 1 10 0.05 0.05 0.05
15/0 < 1 15 0.05 0.05 0.05
IH
Input High
V
Voltage
0.5/4.5 < 1 5 3.5 3.5 3.5
1/9 < 1 10 7 7 7
1.5/13.5 < 1 15 11 11 11
IL
Input Low
V
Voltage
4.5/0.5 < 1 5 1.5 1.5 1.5
9/1 < 1 10 3 3 3
13.5/1.5 < 1 15 4 4 4
OH
Output
Drive
Current
HCC
Types
I
0/5 2.5 5 -2 -1.6 -3.2 -1.15
0/5 4.6 5 -0.64 -0.51 -1 -0.36
0/10 9.5 10 -1.6 -1.3 -2.6 -0.9
0/15 13.5 15 -4.2 -3.4 -6.8 -2.4
0/5 2.5 5 -1.53 -1.36 -3.2 -1.1
HCF
Types
0/5 4.6 5 -0.52 -0.44 -1 -0.36
0/10 9.5 10 -1.3 -1.1 -2.6 -0.9
0/15 13.5 15 -3.6 -3.0 -6.8 -2.4
I
OL
Output
Sink
Current
HCC
Types
HCF
Types
0/5 0.4 5 0.64 0.51 1 0.36
0/10 0.5 10 1.6 1.3 2.6 0.9
0/15 1.5 15 4.2 3.4 6.8 2.4
0/5 0.4 5 0.52 0.44 1 0.36
0/10 0.5 10 1.3 1.1 2.6 0.9
0/15 1.5 15 3.6 3.0 6.8 2.4
I
IH,IIL
Input Leakage
Current
C
*T
LOW
*T
HIGH
TheNoise Marginfor both ”1” and”0” levelis: 1V min.withVDD=5 V, 2V min.with VDD=10 V, 2.5V min. withVDD=15V
Input Capacitance Any Input 5 7.5 pF
I
=-55oCforHCC device:-40oC forHCF device.
=+125oCforHCC device: +85oC for HCF device.
0/18
0/15 15 ±0.3 ±10
Any Input
18 ±0.1 ±10-5±0.1 ±1 µA
-5
±0.3 ±1 µA
HIGH
Unit
*
µA
V
V
V
V
mA
mA
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