Datasheet M74HC279 Datasheet (SGS Thomson Microelectronics)

.HIGH SPEED

tPD= 12 ns(TYP.) AT VCC=5V

.LOWPOWER DISSIPATION

ICC=2µA(MAX.) AT TA=25°C

.HIGH NOISE IMMUNITY

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 OPERATING VOLTAGE RANGE

VCC(OPR)= 2 V TO 6 V

.PIN AND FUNCTION COMPATIBLE

WITH 54/74LS279

M54HC279
M74HC279

QUAD S - R LATCH

B1R

(PlasticPackage)

M1R

(MicroPackage)

ORDER CODES :

M54HC 279F1R M74H C279M1R
M74HC 279B1R M74HC2 79C1R

F1R

(CeramicPackage)

C1R

(Chip Carrier)

DESCRIPTION

The M54/74HC279 isahighspeedCMOSQUAD S

- R LATCH fabricated in silicon gate C2MOS tech­nology. It has the samehigh speed performance of
LSTTL combined with true CMOS low power con­sumption.

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

INPUT AND OUTPUT EQUIVALENT CIRCUIT

PIN CONNECTIONS(top view)

NC =
No Internal
Connection

March1993

1/10

M54/M74HC279

PIN DESCRIPTION

PIN No SYMBOL NAME AND FUNCTION

1, 5, 10. 14 1R to 4R Reset Inputs (ActiveLOW)

2, 3, 6, 11,

12, 15

1S1, 1S2, 2S,

3S1,3S2,4S

Set Inputs (Active LOW)

4, 7, 9, 13 1Q to 4Q Outputs

8 GND Ground (0V)

16 V

CC

Positive Supply Voltage

TRUTH TABLE

S# R Q

HHQ0

LHH

HLL

LLH

NOTE: Q0 = THE LEVELOF Q BEFORETHE INDICRTED INPUT
CONDITIONWAS ESTABLISHED.

# FOR LATCHESWITH DOUBLES INPUT:

H =BOTH S INPUTSHIGH
L = ONE OF BOTHINPUTS LOW

LOGI C DI AG RAM

IEC LOGIC SYMBOL

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

AbsoluteMaximumRatingsarethosevaluesbeyond whichdamage tothedevicemayoccur. Functional operationunder theseconditionisnotimplied.
(*)500 mW:≅ 65oC derate to300 mWby 10mW/oC: 65oCto85oC

2/10

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 (10sec) 300

L

o

C

o

C

M54/M74HC279

RECO MM ENDED OPERATIN G CO NDI TI O NS

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 2 20 40 µA

Current

54HC

V
V

o

C

o

C

Unit

V

V

V

V

3/10

M54/M74HC279

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

t

PLH

t

PHL

t

PHL

C

C

PD

Propagation
Delay Time
(S1, S2 - Q)

Propagation
Delay Time
(S - Q)

Propagation
Delay Time
(R - Q)

Input Capacitance 5 10 10 10 pF

IN

(*) Power Dissipation

2.0 45 130 165 195

4.5 15 26 33 39

6.0 13 22 28 33

2.0 38 100 125 150

4.5 12 20 25 30

6.0 10 17 21 26

2.0 42 120 150 180

4.5 14 24 30 36

6.0 12 20 26 31

18

Capacitance

(*) CPDisdefined as the valueof the IC’s internalequivalent capacitance which is calculated fromthe operatingcurrent consumption without load.
(RefertoTest Circuit).Average opertingcurrent canbe obtained bythe followingequation. ICC(opr) = CPD•VCC•fIN+I

-40 to 85oC
74HC

-55 to 125oC
54HC

CC

Unit

ns

ns

ns

ns

pF

SWITCHING CHARACTERISTICS TEST WAVEFORM

4/10

TEST CIRCUIT ICC(Opr.)

M54/M74HC279

5/10

M54/M74HC279

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

6/10

P001C

Ceramic DIP16/1 MECHANICAL DATA

M54/M74HC279

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

7/10

M54/M74HC279

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

8/10

P013H

PLCC20 MECHANICAL DATA

M54/M74HC279

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/M74HC279

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 mayresults from its use. No
license isgranted by implication orotherwise underany patentor patent rights ofSGS-THOMSON Microelectronics. Specificationsmentioned
in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.
SGS-THOMSON Microelectronicsproducts are notauthorizedforuse ascritical componentsin life support devicesor systemswithout express
written approval of SGS-THOMSON Microelectonics.

 1994 SGS-THOMSON Microelectronics- All Rights Reserved

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