Datasheet M74HC244, M74HC241, M74HC240 Datasheet (SGS Thomson Microelectronics)

OCTAL BUS B U FFER WITH3 STATE OUTP UTS

HC240: INVERTED - HC241/244 NON INVERTED

.HIGH SPEED

tPD= 10 ns(TYP.) at VCC=5V

.LOWPOWERDISSIPATION

ICC=4µA (MAX.) at TA=25oC

.HIGH NOISEIMMUNITY

V

NIH=VINL

=28%VCC(MIN.)

.OUTPUT DRIVE CAPABILITY

15 LSTTL LOADS

.SYMMETRICALOUTPUT IMPEDANCE

|IOH|=IOL=6 mA(MIN)

.BALANCEDPROPAGATION DELAYS

t

PLH=tPHL

.WIDE OPERATINGVOLTAGE RANGE

VCC(OPR)= 2V to6V

.PIN ANDFUNCTION COMPATIBLE

WITH 54/74LS240/241/244

DESCRIPTION

The M54/74HC240, HC241 and HC244 are high
speed CMOSOCTAL BUS BUFFERs fabricated in
silicongate C2MOS technology.

They have the same high speed performance of
LSTTL combined with true CMOS low power
consumption.

The designerhas a choiseof selectcombination of
inverting and non-inverting outputs, symmetricalG
(active low output control) input, and

M54HC240/241/244
M74HC240/241/244

B1R

(PlasticPackage)

M1R

(MicroPackage)

ORDER CODES :

M54HC X XXF 1 R M74HC XXXM1R
M74HC X XXB1R M 74HCXX X C1R

complementary G and G inputs. Each controlinput
governsfour BUS BUFFERs.

Thesedevices aredesigned tobe used with3state
memory address drivers, etc. All inputs are
equipped with protection circuits against static
discharge and transient excess voltage.

F1R

(CeramicPackage)

C1R

(Chip Carrier)

PIN CONNECTION (top view)

October 1993

HC244HC241HC240

1/12

M54/M74HC240/241/244

CHIP CARRIER

HC244HC241HC240

INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION (HC2 40)

PIN No SYMBOL NAME AND FUNCTION

1 1G Output Enable Input
2, 4, 6, 8 1A1 to 1A4 Data Inputs
9, 7, 5, 3 2Y1 to 2Y4 Data Outputs

11, 13, 15,172A1 to 2A4 Data Inputs

PIN DESCRIPTION (HC241)

PIN No SYMBOL NAME AND FUNCTION

1 1G Output Enable Input
2, 4, 6, 8 1A1 to 1A4 Data Inputs
9, 7, 5, 3 2Y1 to 2Y4 Data Outputs

11, 13, 15,172A1 to 2A4 Data Inputs

18, 16, 14,121Y1 to 1Y4 Data Outputs

19 2G Output Enabel Input
10 GND Ground (0V)
20 V

CC

Positive Supply Voltage

18, 16, 14,121Y1 to 1Y4 Data Outputs

19 2G Output Enabel Input
10 GND Ground (0V)
20 V

CC

Positive Supply Voltage

PIN DESCRIPTION (HC 2 44 )

PIN No SYMBOL NAME AND FUNCTION

1 1G Output Enable Input
2, 4, 6, 8 1A1 to 1A4 Data Inputs
9, 7, 5, 3 2Y1 to 2Y4 Data Outputs

11, 13, 15,172A1 to 2A4 Data Inputs

18, 16, 14,121Y1 to 1Y4 Data Outputs

19 2G Output Enabel Input
10 GND Ground (0V)
20 V

CC

Positive Supply Voltage

2/12

IEC LOGIC SYMBOLS

TRUTH TABLE

M54/M74HC240/241/244

HC244HC241HC240

INPUT OUTPUT

G G (HC241) An Yn (HC240) Yn (HC241) Yn (HC244)

LHLHLL
LHHLHH

X: ”H” or”L”
Z: High impedance

HLXZZZ

CIRCUIT SCHEMATIC (1/8 PACKAGE)

HC240 HC24 1/ 244

3/12

M54/M74HC240/241/244

ABSOLU TE MAXIMU M R AT I NG S

Symbol Parameter Value Unit

V

CC

V

V

O

I

IK

I

OK

I

O

I

or I

CC

P

D

T

stg

T

AbsoluteMaximumRatingsarethosevaluesbeyondwhichdamagetothedevicemayoccur.Functionaloperationundertheseconditionisnotimplied.
(*)500 mW: ≅ 65oC derateto300 mWby 10mW/oC: 65oCto85oC

RECO MM ENDED O PERAT IN G C O NDI 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 ± 35 mA
DC VCCor Ground Current ± 70 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

4/12

DC SPECIFICATIO NS

Symbol Parameter

V

V

V

V

I

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
3 State Output

OZ

Off State Current
Quiescent Supply

CC

Current

M54/M74HC240/241/244

Test Conditions Value

T

=25oC

V

CC

(V)

A

54HC and 74HC

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

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

6.0

=

V

I

IO=-20 µA

V

IH

or

V

IL

=-6.0 mA 4.18 4.31 4.13 4.10

O

=-7.8 mA 5.68 5.8 5.63 5.60

O

V

=

I

IO=20µA

V

IH

or

V

IL

= 6.0 mA 0.17 0.26 0.33 0.40

O

= 7.8 mA 0.18 0.26 0.33 0.40

O

VI=VCCor GND ±0.1 ±1 ±1 µA

V

I=VIH

or V

VO=VCCor GND

1.9 2.0 1.9 1.9

0.0 0.1 0.1 0.1

IL

6.0 VI=VCCor GND 4 40 80 µA

-40 to 85oC
74HC

-55 to 125oC
54HC

Unit

±0.5 ±5 ±10 µA

V

V

V

V

5/12

M54/M74HC240/241/244

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

Test Conditions Value

T

=25oC

Symbol Parameter

t
t

TLH
THL

Output Transition
Time

V

C

CC

(V)

L

(pF)

2.0
50

4.5 7121918

A

54HC and 74HC

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

25 60 75 90

6.0 6101315

t

PLH

t

PHL

Propagation
Delay Time

2.0
50

4.5 12 18 23 27

36 90 115 135

6.0 10 15 20 23

2.0

150

4.5 17 26 33 39

51 130 165 195

6.0 14 22 28 33

t

t

PZL
PZH

Output Enable
Time

2.0
50 RL=1KΩ

4.5 16 25 31 38

48 125 155 190

6.0 14 21 26 32

2.0

150 R

4.5 21 33 41 50

=1KΩ

L

63 165 205 250

6.0 18 28 35 43

t

t

PLZ
PHZ

Output Disable
Time

2.0
50 RL=1KΩ

4.5 15 25 31 38

32 125 155 190

6.0 14 21 26 32

C

C

Input Capacitance 5 10 10 10 pF

IN

OUT

Output

10

Capacitance

C

(*) Power Dissipation

PD

Capacitance

(*) CPDisdefined as the valueofthe IC’s internal equivalent capacitance whichis calculated fromthe operatingcurrent consumption withoutload.
(Referto Test Circuit). Average opertingcurrent can beobtained by the followingequation. ICC(opr) = CPD•VCC•fIN+ICC/8(per circuit)

HC240

HC241/244

31
33

-40 to 85oC
74HC

-55 to 125oC
54HC

Unit

ns

ns

ns

ns

ns

ns

pF

pF

TEST CIRCUIT ICC(Opr.)

HC240

6/12

SWITCHING CHARACTERISTICS TEST CIRCUIT

HC240

M54/M74HC240/241/244

HC241/HC244

7/12

M54/M74HC240/241/244

Plastic DIP20 (0.25) MECHANICAL DATA

DIM.

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

a1 0.254 0.010

B 1.39 1.65 0.055 0.065

b 0.45 0.018

b1 0.25 0.010

D 25.4 1.000
E 8.5 0.335

e 2.54 0.100

e3 22.86 0.900

F 7.1 0.280

I 3.93 0.155

L 3.3 0.130

Z 1.34 0.053

mm inch

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P001J

M54/M74HC240/241/244

Ceramic DIP20 MECHANICAL DATA

DIM.

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

A 25 0.984
B 7.8 0.307
D 3.3 0.130
E 0.5 1.78 0.020 0.070

e3 22.86 0.900

F 2.29 2.79 0.090 0.110

G 0.4 0.55 0.016 0.022

I 1.27 1.52 0.050 0.060

L 0.22 0.31 0.009 0.012

M 0.51 1.27 0.020 0.050

N1 4° (min.), 15° (max.)

P 7.9 8.13 0.311 0.320

Q 5.71 0.225

mm inch

P057H

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M54/M74HC240/241/244

SO20 MECHANICAL DATA

DIM.

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

A 2.65 0.104
a1 0.10 0.20 0.004 0.007
a2 2.45 0.096

b 0.35 0.49 0.013 0.019

b1 0.23 0.32 0.009 0.012

C 0.50 0.020

c1 45° (typ.)

D 12.60 13.00 0.496 0.512

E 10.00 10.65 0.393 0.419

e 1.27 0.050

e3 11.43 0.450

F 7.40 7.60 0.291 0.299

L 0.50 1.27 0.19 0.050

M 0.75 0.029

S8°(max.)

mm inch

10/12

P013L

PLCC20 MECHANICAL DATA

M54/M74HC240/241/244

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

11/12

M54/M74HC240/241/244

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consequences of useof suchinformation nor for any infringementof patents or other rightsof third parties which may results from its use. No
license is granted byimplication or otherwiseunder any patentor patentrights ofSGS-THOMSON Microelectronics. Specificationsmentioned
in thispublication are subjectto changewithout notice. This publicationsupersedes andreplaces all information previouslysupplied.
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written approval of SGS-THOMSON Microelectonics.

 1994SGS-THOMSON Microelectronics- All Rights Reserved

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