Datasheet M74HC155 Datasheet (SGS Thomson Microelectronics)

DUAL 2 TO 4 LINE DECODER 3 TO 8 LINE DECODER

.HIGH SPEED

tPD= 12 ns (TYP.) ATVCC=5V

.LOWPOWER DISSIPATION

ICC=4µA(MAX.) AT TA=25°C

.HIGH NOISEIMMUNITY

V

NIH=VNIL

=28%VCC(MIN.)

.OUTPUT DRIVE CAPABILITY

10 LSTTL LOADS

.SYMMETRICAL OUTPUT IMPEDANCE

IOH =IOL= 4 mA (MIN.)

.BALANCEDPROPAGATION DELAYS

t

PLH=tPHL

.WIDE OPERATINGVOLTAGERANGE

VCC(OPR)= 2V TO 6 V

.PIN AND FUNCTION COMPATIBLE

WITH 54/74LS155

M54HC155
M74HC155

B1R

(PlasticPackage)

M1R

(MicroPackage)

ORDER CODES :

M54HC 155F1R M74H C155M1 R
M74HC 155B1R M74HC1 55C1R

F1R

(CeramicPackage)

C1R

(Chip Carrier)

DESCRIPTION

The M54/74HC155 isa high speedCMOSDUAL2­TO-4 LINE DECODER fabricated in silicon gate
C2MOS technology.

It has the samehigh speed performance of LSTTL
combined with true CMOSlowpower consumption.
It features dual 1-TO-4 linedemultiplexers withindi­vidualstrobeinputs (1G and 2G), individual datain­puts (1C and 2C) and common binary address
inputs (A andB).

Whenbothdecodersareenabled bythestrobes, the
inverted output of 1C dataand non-inverted output
of 2C data will be brought to the select output pins
of each sections. A 1-TO-8 line demultiplexer can
also be easily built up by providing a datasignal to
both 1C and 2C inputs ; the output order from the
msb is 1Y3, 1Y2, 1Y1, 1Y0, 2Y3, 2Y2, 2Y1, 2Y0.
This device canbe used as a2-to-4line decoder or
a 3-to-8 line decoder when 1C isheld highand 2C
is heldlow.

All inputs are equipped with protection circuits
against static discharge and transient excess volt­age.

PIN CONNECTIONS(top view)

NC =
No Internal
Connection

December1992

1/11

M54/M74HC155

INPUT AND OUTPUT EQUIVALENT CIRCUIT IEC LOGIC SYMBOL

PIN DESCRIPTION

PIN No SYMBOL NAME AND FUNCTION

1, 15 1C, 2C Data Inputs
2, 14 1G, 2G Strobe Inputs
3, 13 B, A Common Data Inputs

7, 6, 5, 4 1Y0 to 1Y3 Outputs

9, 10, 11, 12 2Y0 to 2Y3 Outputs

8 GND Ground (0V)

16 V

CC

Positive Supply Voltage

TRUTH TABLE

INPUTS OUTPUTS

B A 1G 1C 1Y0 1Y1 1Y2 1Y3

XXHXHHHH

LLLHLHHH

LHLHHLHH
HLLHHHLH
HHLHHHHL
XXXLHHHH

TRUTH TABLE

INPUTS OUTPUTS

B A 2G 2C 2Y0 2Y1 2Y2 2Y3

XXHXHHHH

LLLLLHHH

LHLLHLHH
HLLLHHLH
HHLLHHHL
XXXHHHHH

2/11

LOGI C CI RCU I T

M54/M74HC155

ABSOLU TE M AXIMU 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

L

AbsoluteMaximumRatingsarethosevalues beyondwhichdamage tothedevicemayoccur. Functional operationunder theseconditionisnotimplied.
(*)500 mW: ≅ 65oC derate to300 mW by 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

o

C

o

C

3/11

M54/M74HC155

RECO MM ENDED OPERAT I N G CO NDI TIONS

Symbol Parameter Value Unit

V

V

V

T

t

r,tf

DC SPECIFICATIONS

Symbol Parameter

V

IH

V

V

OH

V

OL

I

I

CC

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

Test Conditions Value

V

(V)

CC

=25oC

T

A

54HC and 74HC

-40 to 85oC
74HC

-55 to 125oC

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

High Level Input
Voltage

2.0 1.5 1.5 1.5

4.5 3.15 3.15 3.15

6.0 4.2 4.2 4.2

Low Level Input

IL

Voltage

2.0 0.5 0.5 0.5

4.5 1.35 1.35 1.35

6.0 1.8 1.8 1.8

High Level
Output Voltage

Low Level Output
Voltage

Input Leakage

I

Current
Quiescent Supply

2.0
V

=

I

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

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

Current

54HC

V
V

o

C

o

C

Unit

V

V

V

V

4/11

M54/M74HC155

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 45 130 165 195

4.5 15 26 33 39

6.0 13 22 28 33

C

C

PD

Input Capacitance 5 10 10 10 pF

IN

(*) Power Dissipation

53

Capacitance

(*) CPDisdefinedas the value ofthe IC’sinternal equivalent capacitance which is calculated fromthe operatingcurrent consumption without load.
(RefertoTestCircuit).Average operting current canbe obtained bythe followingequation. ICC(opr) = CPD•VCC•fIN+I

SWITCHING CHARACTERISTICS TEST WAVEFORM

-40 to 85oC
74HC

-55 to 125oC
54HC

CC

Unit

ns

ns

pF

5/11

M54/M74HC155

TEST WAVEFORM ICC(Opr.)

INPUT WAVEFORMIS THE SAMEAS THAT IN CASE OF SWITCHINGCHARACTERISTICSTEST.

6/11

Plastic DIP16 (0.25) MECHANICAL DATA

M54/M74HC155

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

P001C

7/11

M54/M74HC155

Ceramic DIP16/1 MECHANICAL DATA

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

8/11

P053D

SO16 (Narrow) MECHANICAL DATA

M54/M74HC155

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

P013H

9/11

M54/M74HC155

PLCC20 MECHANICAL DATA

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

10/11

P027A

M54/M74HC155

Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No
license is grantedbyimplication or otherwise under any patent or patentrights ofSGS-THOMSON Microelectronics. Specificationsmentioned
in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.
SGS-THOMSON Microelectronicsproductsare notauthorized foruse ascritical componentsinlife support devices orsystems withoutexpress
written approval of SGS-THOMSON Microelectonics.

 1994 SGS-THOMSON Microelectronics - All Rights Reserved

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11/11