SGS Thomson Microelectronics M74HC273 Datasheet

OCTAL D TYPE FLIP FLOP WITH CLEAR

.HIGH SPEED

f

= 67 MHz(TYP.) AT VCC=5V

MAX

.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 TO6 V

.PIN AND FUNCTION COMPATIBLE WITH

54/74LS273

DESCRIPTION

M54HC273
M74HC273

B1R

(PlasticPackage)

M1R

(MicroPackage)

ORDER CODES :

M54HC 273F1R M74H C273M1R
M74HC 273B1R M74HC2 73C1R

F1R

(CeramicPackage)

C1R

(Chip Carrier)

The M54/74HC273 isa highspeed CMOS OCTAL
D-TYPEFLIPFLOPWITH CLEAR fabricated insili­con gate C2MOStechnology. It has the same high
speed performance of LSTTL combined with true
CMOS low powerconsumption.

Information signals applied to D inputs are trans­ferred to the Q outputs on the positive-going edge
of the clock pulse.

Whenthe CLEAR inputis heldlow,theQoutput are
inthe lowlogic level independent oftheotherinputs.

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

INPUT AND OUTPUT EQUIVALENT CIRCUIT

PIN CONNECTIONS(top view)

October 1992

NC =
No Internal
Connection

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M54/M74HC273

PIN DESC RIPTION

PIN No SYMBOL NAME AND FUNCTION

1 CLEAR Master Reset Input

(Active LOW)

2, 5, 6, 9,

12, 15, 16,

19

3, 4, 7, 8,

13, 14, 17,

18
11 CLOCK Clock Input (LOW to

10 GND Ground (0V)
20 V

Q0 to Q7 Flip Flop Outputs

D0 to D7 Data Inputs

HIGH, Edge Triggered)

CC

Positive Supply Voltage

TRUTH TABLE

INPUTS OUTPUS

CLEAR CLOCK D Q

L X X L CLEAR
HLL
HHH
H X Qn NO CHANGE

X:Don’t Care

IEC LOGIC SYMBOL

FUNCTION

LOGI C DI AG RAM

2/11

M54/M74HC273

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

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

RECO MM ENDED OPERAT I N G CO NDI TI O NS

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 (10sec) 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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M54/M74HC273

DC SPECIFICATIONS

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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