Datasheet M74HC147 Datasheet (SGS Thomson Microelectronics)

.HIGH SPEED

tPD= 15 ns(TYP.) at VCC=5V

.LOWPOWERDISSIPATION

ICC=4µA(MAX.) at TA=25°C

.HIGH NOISEIMMUNITY

V

NIH=VNIL

=28%VCC(MIN.)

.OUTPUT DRIVE CAPABILITY

10 LSTTL LOADS

.SYMMETRICALOUTPUT IMPEDANCE

IOH =IOL= 4 mA(MIN.)

.BALANCEDPROPAGATION DELAYS

t

PLH=tPHL

.WIDE OPERATINGVOLTAGE RANGE

VCC(OPR)= 2V to 6 V

.PIN ANDFUNCTION COMPATIBLE

WITH 54/74LS147

DESCRIPTION

M54HC147
M74HC147

10 TO 4 LINE PRIORITY ENCODER

B1R

(PlasticPackage)

M1R

(MicroPackage)

ORDER CODES :

M54HC 147F1R M74H C147M1R
M74HC 147B1R M74HC1 47C1R

F1R

(CeramicPackage)

C1R

(Chip Carrier)

The M54/74HC147 is ahighspeedCMOS10 TO 4
LINE PRIORITY ENCODER fabricated in silicon
gate C2MOS technology. It has the same high
speed performance of LSTTL combined with true
CMOS low powerconsumption.

This device features priority encoding of the inputs
to ensure thatonly the highest order data lineis en­coded. Nine input lines are encoded to a four line
BCD output. Theimplied decimal zero condition re­quires no input condition as zero is encoded when
allninedatalinesareathighlogic level.Alldatainput
and outputs are active at the low logiclevel. All in­puts are equipped with protection circuits against
staticdischarge and transient excessvoltage.

INPUT AND OUTPUT EQUIVALENT CIRCUIT

PIN CONNECTIONS(top view)

October 1992

NC =
No Internal
Connection

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M54/M74HC147

TRUTH TABLE

INPUTS OUTPUTS

1 2 3 4 56 789DCBA

HHHHHHHHHHHHH
XXXXXXXXLLHHL
XXXXXXXLHLHHH
XXXXXXLHHHLLL
XXXXXLHHHHLLH
XXXXLHHHHHLHL
XXXLHHHHHHLHH
XXLHHHHHHHHLL
XLHHHHHHHHHLH
LHHHHHHHHHHHL

X:Don’t Care

LOGI C DIAGRAM

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M54/M74HC147

PIN DESCRIPTION

IEC LOGIC SYMBOL

PIN No SYMBOL NAME AND FUNCTION

9, 7, 6, 14 A to D BCD Address Outputs

(Active LOW)

11, 12, 13,

1, 2, 3, 4,

1 to 9 Decimal Data Inputs

(Active LOW)

5, 10

15 NC Not Connected

8 GND Ground (0V)

16 V

CC

Positive Supply Voltage

ABSOLU TE MAXIMU M RAT INGS

Symbol Parameter Value Unit

V

CC

V

V

O

I

IK

I

OK

I

O

I

or I

CC

P

D

T

stg

T

AbsoluteMaximumRatingsarethose values beyondwhichdamage tothedevicemayoccur. Functionaloperationunder these conditionisnotimplied.
(*)500 mW: ≅ 65oC derateto300mWby 10mW/oC: 65oCto85oC

Supply Voltage -0.5 to +7 V
DC Input Voltage -0.5 to VCC+ 0.5 V

I

DC Output Voltage -0.5 to VCC+ 0.5 V
DC Input Diode Current ± 20 mA
DC Output Diode Current ± 20 mA
DC Output Source Sink Current Per Output Pin ± 25 mA
DC VCCor Ground Current ± 50 mA

GND

Power Dissipation 500 (*) mW
Storage Temperature -65 to +150
Lead Temperature (10 sec) 300

L

o

C

o

C

RECO MM ENDED OPERATIN G C ONDI TI O NS

Symbol Parameter Value Unit

V

T

t

V

V

r,tf

Supply Voltage 2 to 6 V

CC

Input Voltage 0 to V

I

Output Voltage 0 to V

O

Operating Temperature: M54HC Series

op

M74HC Series

CC
CC

-55 to +125

-40 to +85

Input Rise and Fall Time VCC= 2 V 0 to 1000 ns

V

= 4.5 V 0 to 500

CC

V

= 6 V 0 to 400

CC

V
V

o

C

o

C

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M54/M74HC147

DC SPECIFICATIO NS

Symbol Parameter

V

V

V

V

I

High Level Input

IH

Voltage

Low Level Input

IL

Voltage

High Level

OH

Output Voltage

Low Level Output

OL

Voltage

I

Input Leakage

I

Current
Quiescent Supply

CC

Current

Test Conditions Value

V

(V)

CC

=25oC

A

54HC and 74HC

Min. Typ. Max. Min. Max. Min. Max.

-40 to 85oC
74HC

-55 to 125oC
54HC

Unit

T

2.0 1.5 1.5 1.5

4.5 3.15 3.15 3.15

6.0 4.2 4.2 4.2

2.0 0.5 0.5 0.5

4.5 1.35 1.35 1.35

6.0 1.8 1.8 1.8

2.0

4.5 4.4 4.5 4.4 4.4

6.0 5.9 6.0 5.9 5.9

4.5 I

6.0 I

2.0

4.5 0.0 0.1 0.1 0.1

6.0 0.0 0.1 0.1 0.1

4.5 I

6.0 I

6.0

=

V

I

IO=-20 µA

V

IH

or

V

IL

=-4.0 mA 4.18 4.31 4.13 4.10

O

=-5.2 mA 5.68 5.8 5.63 5.60

O

V

=

I

IO=20µA

V

IH

or

V

IL

= 4.0 mA 0.17 0.26 0.33 0.40

O

= 5.2 mA 0.18 0.26 0.33 0.40

O

VI=VCCor GND ±0.1 ±1 ±1 µA

1.9 2.0 1.9 1.9

0.0 0.1 0.1 0.1

6.0 VI=VCCor GND 4 40 80 µA

V

V

V

V

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M54/M74HC147

AC ELECTRICAL CHARACTERISTICS (CL=50pF,Inputtr=tf=6ns)

Test Conditions Value

T

=25oC

Symbol Parameter

t
t

TLH
THL

Output Transition
Time

V

CC

(V)

2.0 30 75 95 110

4.5 8151922

A

54HC and 74HC

Min. Typ. Max. Min. Max. Min. Max.

6.0 7131619

t

PLH

t

PHL

Propagation
Delay Time

2.0 60 125 190 225

4.5 18 30 38 45

6.0 15 26 32 38

C

C

PD

Input Capacitance 5 10 10 10 pF

IN

(*) Power Dissipation

24

Capacitance

(*) CPDisdefined as the value ofthe IC’sinternal equivalent capacitance whichis calculated fromthe operatingcurrent consumption without load.
(Referto Test Circuit). Average operting current canbe obtained bythe followingequation. ICC(opr) = CPD•VCC•fIN+I

TEST CIRCUIT ICC(Opr.)SWITCHING CHARACTERISTICS TEST

CIRCUIT

-40 to 85oC
74HC

-55 to 125oC
54HC

CC

Unit

ns

ns

pF

INPUT WAVEFORM IS THE SAME AS THAT IN CASE OF
SWITCHINGCHARACTERISTICSTEST.

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M54/M74HC147

Plastic DIP16 (0.25) MECHANICAL DATA

DIM.

MIN. TYP. MAX. MIN. TYP. MAX.

a1 0.51 0.020

B 0.77 1.65 0.030 0.065

b 0.5 0.020

b1 0.25 0.010

D 20 0.787
E 8.5 0.335

e 2.54 0.100

e3 17.78 0.700

F 7.1 0.280

I 5.1 0.201

L 3.3 0.130

Z 1.27 0.050

mm inch

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P001C

Ceramic DIP16/1 MECHANICAL DATA

M54/M74HC147

DIM.

MIN. TYP. MAX. MIN. TYP. MAX.

A 20 0.787
B 7 0.276
D 3.3 0.130
E 0.38 0.015

e3 17.78 0.700

F 2.29 2.79 0.090 0.110
G 0.4 0.55 0.016 0.022
H 1.17 1.52 0.046 0.060

L 0.22 0.31 0.009 0.012
M 0.51 1.27 0.020 0.050
N 10.3 0.406

P 7.8 8.05 0.307 0.317

Q 5.08 0.200

mm inch

P053D

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M54/M74HC147

SO16 (Narrow) MECHANICAL DATA

DIM.

MIN. TYP. MAX. MIN. TYP. MAX.

A 1.75 0.068
a1 0.1 0.2 0.004 0.007
a2 1.65 0.064

b 0.35 0.46 0.013 0.018

b1 0.19 0.25 0.007 0.010

C 0.5 0.019

c1 45° (typ.)

D 9.8 10 0.385 0.393

E 5.8 6.2 0.228 0.244

e 1.27 0.050

e3 8.89 0.350

F 3.8 4.0 0.149 0.157

G 4.6 5.3 0.181 0.208

L 0.5 1.27 0.019 0.050

M 0.62 0.024

S8°(max.)

mm inch

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P013H

PLCC20 MECHANICAL DATA

M54/M74HC147

DIM.

MIN. TYP. MAX. MIN. TYP. MAX.

A 9.78 10.03 0.385 0.395

B 8.89 9.04 0.350 0.356

D 4.2 4.57 0.165 0.180
d1 2.54 0.100
d2 0.56 0.022

E 7.37 8.38 0.290 0.330

e 1.27 0.050

e3 5.08 0.200

F 0.38 0.015
G 0.101 0.004
M 1.27 0.050

M1 1.14 0.045

mm inch

P027A

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M54/M74HC147

Information furnishedis believed to be accurate and reliable. However, SGS-THOMSON Microelectronicsassumes no responsability for the
consequences of useof suchinformation nor forany infringement of patents or other rights of third parties which may results from its use. No
license is granted byimplication or otherwiseunder any patentor patentrights ofSGS-THOMSON Microelectronics.Specificationsmentioned
in this publication are subjectto changewithout notice. This publication supersedes andreplaces all information previously supplied.
SGS-THOMSON Microelectronicsproducts are not authorized foruse ascritical componentsinlife supportdevices orsystemswithoutexpress
written approval of SGS-THOMSON Microelectonics.

 1994SGS-THOMSON Microelectronics- All Rights Reserved

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