SGS Thomson Microelectronics M74HC131 Datasheet

.HIGH SPEED

tPD= 22 ns(TYP.) AT VCC=5V

.LOWPOWERDISSIPATION

ICC=4µA(MAX.) at TA=25°C

.HIGH NOISEIMMUNITY

VNIH= 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)= 2 V to 6 V

.PIN AND FUNCTION COMPATIBLE WITH

54/74LS131

M54HC131

M74HC131

3 TO 8 LINE DECODER/LATCH

B1R

(PlasticPackage)

M1R

(MicroPackage)

ORDER CODES :

M54HC 131F1R M74H C131M1R
M74HC 131B1R M74HC1 31C1R

F1R

(CeramicPackage)

C1R

(Chip Carrier)

DESCRIPTION

The M54/74HC131 is a high speed CMOS 3 TO 8
LINE DECODER/LATCH fabricated in silicon gate
C2MOS technology.

It has the same high speed performance of LSTTL
combined withtrue CMOSlowpower consumption.
This deviceis a DECODER/LATCHcapable of se­lectingarbitrarilyoneof eight outputsbythreebinary
inputs A,B, and C, in thiscase, the selected output
is at logic”low”.

Also, whenENABLE input G1is setlowor ENABLE
inputG2is sethigh,selection isinhibited regardless
of otherinputsignals and all theoutputsare athigh.
All inputs are equipped with protection circuits
against static discharge and transient excess volt­age.

PIN CONNECTIONS(top view)

NC =
No Internal
Connection

October 1992

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M54/M74HC131

INPUT AND OUTPUT EQUIVALENT CIRCUIT

IEC LOGIC SYMBOL

PIN DESCRIPTION

PIN No SYMBOL NAME AND FUNCTION

1, 2, 3 A, B, C Data Inputs

4 CLK Clock Input (LOW to

HIGH, Edge-triggered)
5 G2 Enable (Active LOW)
6 G1 Enable (Active HIGH)

9, 10, 11,

12, 13, 14,

15, 7

8 GND Ground (0V)

16 V

Y0, Y1, Y2,
Y3, Y4, Y5,

Y6, Y7

CC

Data Outputs

Positive Supply Voltage

TRUTH TABLE

INPUTS

CLK

XXHXXXHHHHHHHH
XLXXXXHHHHHHHH

L H L X X X Outputs corresponding to stored address L: all others H

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ENABLE SELECT

G1 G2 C B A Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7

HLLLLLHHHHHHH
HLLLHHLHHHHHH
HLLHLHHLHHHHH
HLLHHHHHLHHHH
HLHLLHHHHLHHH
HLHLHHHHHHLHH
HLHHLHHHHHHLH
HLHHHHHHHHHHL

OUTPUTS

BLOCK DIAGRAM

M54/M74HC131

VCC=16
GND = 8

LOGIC DIAGRAM

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M54/M74HC131

ABSOLU TE M AXI MU M R AT 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 tothedevice mayoccur. Functionaloperationunder these conditionisnotimplied.
(*)500 mW: ≅ 65oC derateto300mWby 10mW/oC: 65oCto85oC

RECO MM ENDED O PERAT IN G CONDI TIONS

Symbol Parameter Value Unit

V

CC

V

I

V

O

T

op

t

r,tf

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

Supply Voltage 2 to 6 V
Input Voltage 0 to V
Output Voltage 0 to V
Operating Temperature: M54HC Series

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

o

C

o

C

V
V

o

C

o

C

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