Datasheet 74ACT273 Datasheet (SGS Thomson Microelectronics)



OCTAL D-TYPE FLIP FLOP WITH CLEAR

■ HIGHSPEED:

=190MHzns(TYP.)atVCC=5V

f

MAX

■ LOW POWER DISSIPATION:

I

=8µA (MAX.)at TA=25oC

CC

■ COMPATIBLEWITHTTLOUTPUTS

V

=2V(MIN),VIL=0.8V(MAX)

IH

■

50ΩTRANSMISSIONLINEDRIVING
CAPABILITY

■ SYMMETRICALOUTPUTIMPEDANCE:

|I

|=IOL=24mA(MIN)

OH

■ BALANCEDPROPAGATIONDELAYS:

≅

t

t

PLH

PHL

■ OPERATINGVOLTAGERANGE:

V

(OPR)= 4.5Vto 5.5V

CC

■ PINANDFUNCTION COMPATIBLEWITH

74SERIES273

■

IMPROVEDLATCH-UP IMMUNITY

DESCRIPTION

The ACT273 is a high-speed CMOS OCTAL
D-TYPE FLIP FLOP WITH CLEAR fabricated
with sub-micron silicon gate and double-layer
metal wiring C
power applications mantaining high speed
operation similar to equivalent Bipolar Schottky
TTL.

2

MOS technology.It is ideal for low

74ACT273

PRELIMINARY DATA

M

B

(PlasticPackage)

ORDER CODES :

74ACT273B

74ACT273M

74ACT273T

Information signals applied to D inputs are
transfered to the Q output on the positive going
edgeof theclock pulse.

Whenthe CLEAR input is held low, the Q outputs
are held low independentelyof the otherinputs .

The device is designed to interface directly High
Speed CMOS systems with TTL, NMOS and
CMOSoutput voltagelevels.

All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.

(Micro Package)

T

(TSSOPPackage)

PIN CONNECTION AND IEC LOGICSYMBOLS

May 1999

1/11

74ACT273

INPUT AND OUTPUTEQUIVALENTCIRCUIT

TRUTH TABLE

INPUTS OUTPUTS FUNCTION

CLE AR D CLOCK Q

L X X L CLEAR
HL L
HH H
HX Q

X:Don’tCare

PIN DESCRIPTION

PI N No SYM BO L NAM E AND F U NCTIO N

1 CLEAR Asyncronous Master

Reset (Active LOW)

2,5,6,9,12,

15, 16,19

3,4,7,8,13,

14, 17,18

11 CLOCK Clock Input

10 GND Ground (0V)
20 V

n

Q0toQ7 Flip-Flop Outpus

D0toD7 Data Inputs

(LOW-to-HIGH, Edge­Triggered)

Positive Supply Voltage

CC

NOCHANGE

LOGICDIAGRAMS

Thislogic diagram has notbeused to esimate propagation delays

2/11

74ACT273

ABSOLUTE MAXIMUM RATINGS

Symb o l Para met er Val u e Uni t

V

V

V

I

I

OK

I

orI

I

CC

T

T

AbsoluteMaximumRatingsarethosevaluesbeyond whichdamagetothedevicemayoccur. Functionaloperationundertheseconditionisnotimplied.

RECOMMENDED OPERATINGCONDITIONS

Symb o l Parameter Val u e Uni t

V

V

V

T

dt/dv Input Rise and Fall Time V

1)VINfrom0.8Vto 2.0V

Supply Voltage -0.5to+7 V

CC

DC Input Voltage -0.5toVCC+0.5 V

I

DC Output Voltage -0.5toVCC+0.5 V

O

DC Input Diode Current ±20 mA

IK

DC Output Diode Current ±20 mA
DC Output Current

O

DC VCCor Ground Current

GND

Storage Temperature -65to+150

stg

Lead Temperature (10 sec) 300

L

Supply Voltage 4.5to5.5 V

CC

Input Voltage 0toV

I

Output Voltage 0toV

O

Operating Temperature: -40to+85

op

= 4.5 to 5.5V (note 1) 8 ns/V

CC

50 mA

±

400 mA

±

CC
CC

o

C

o

C

V
V

o

C

3/11

74ACT273

DC SPECIFICATIONS

Symbol Parameter Test Conditi ons Value Un it

T

V

CC

(V)

High Level Input Voltage 4.5 VO=0.1Vor

V

IH

5.5 2.0 1.5 2.0

Low Level Input Voltage 4.5 VO=0.1Vor

V

IL

5.5 1.5 0.8 0.8

High Level Output

V

OH

Voltage

4.5

5.5 I

V

V

4.5 I

5.5 I

Low Level Output

V

OL

Voltage

4.5

5.5 I

V

V

4.5 I

5.5 I

Input Leakage Current 5.5 VI=VCCorGND ±0.1 ±1 µA

I

I

Max ICC/Input 5.5 VI=VCC-2.1V 0.6 1.5 mA

I

CCT

Quiescent Supply

I

CC

5.5 VI=VCCorGND 4 40

-0.1V

V

CC

V

-0.1V

CC

IO=-50µA 4.4 4.49 4.4

(*)

=

I

or

IH

V

IL

(*)

I

or

IH

V

IL

=-50µA 5.4 5.49 5.4

O

=-24 mA 3.86 3.76

O

=-24 mA 4.86 4.76

O

IO=50µA 0.001 0.1 0.1

=

=50mA 0.001 0.1 0.1

O

=24mA 0.36 0.44

O

=24mA 0.36 0.44

O

Current
Dynamic Output Current

I

OLD

(note 1, 2)

I

OHD

1) Maximumtest duration 2ms, one output loaded at time

2)Incidentwaveswitchingis guaranteedontransmissionlineswithimpedances aslowas50Ω.

5.5 V

=1.65V max 75 mA

OLD

V

=3.85Vmin -75 mA

OHD

=25oC -40 to 85oC

A

Min. Typ. Max. Min. Max.

2.0 1.5 2.0

1.5 0.8 0.8

µ

V

V

V

V

A

4/11

74ACT273

AC ELECTRICAL CHARACTERISTICS

= 50 pF, RL= 500 Ω, Input tr=tf=3 ns)

(C

L

Symbol Parameter Test Conditio n Value Un it

t

Propagation Delay Time

PLH

t

CK to Q

PHL

Propagation Delay Time

t

PLH

CLR to Q

t

PHL

CLR pulse Width, LOW 5.0

t

wL

CK pulse Width 5.0

t

w

Setup Time Q to CK

t

s

HIGH or LOW
Hold Time Q to CK

t

h

HIGH or LOW
Recovery Time CLR to

t

REM

CK
Maximum Clock

f

MAX

Frequency

(*) Voltagerangeis 5V± 0.5V

V

(V)

5.0

5.0

5.0

5.0

5.0

5.0

CC

(*)

(*)

(*)
(*)
(*)

(*)

(*)

(*)

T

=25oC -40 to 85oC

A

Min. Typ. Max. Min. Max.

1.5 6.5 8.5 1.5 9.0

1.5 7.0 9.0 1.5 9.5

1.5 4.0 4.0 ns

1.0 4.0 4.0

1.0 3.5 3.5

-0.5 1.5 1.5

0.5 3.0 3.0

125 190 110

ns

ns

ns
ns

ns

ns

MHz

CAPACITIVE CHARACTERISTICS

Symbol Parameter Test Conditi ons Value Un it

V

CC

(V)

Input Capacitance 5.0 4 pF

C

IN

Power Dissipation

C

PD

5.0 fIN=10 MHz 32 pF

Capacitance (note 1)

1)CPDisdefined asthevalueoftheIC’sinternalequivalentcapacitance whichiscalculatedfromtheoperatingcurrentconsumption withoutload.(Referto
TestCircuit).Averageopertingcurrentcanbeobtainedbythefollowingequation.I

(opr)=CPD• VCC• fIN+ICC/n(percircuit)

CC

=25oC -40 to 85oC

T

A

Min. Typ. Max. Min. Max.

5/11

74ACT273

TESTCIRCUIT

CL= 50 pF or equivalent (includes jigand probe capacitance)
R

=500Ω orequivalent

L=R1

R

WAVEFORM1: PROPAGATIONDELAYS,SETUP ANDHOLD TIMES(f=1MHz; 50% duty cycle)

ofpulsegenerator (typically50Ω)

T=ZOUT

6/11

74ACT273

WAVEFORM2: PROPAGATIONDELAYS

(f=1MHz;50% duty cycle)

WAVEFORM3: RECOVERYTIME (f=1MHz;50% duty cycle)

7/11

74ACT273

Plastic DIP-20 (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

8/11

P001J

SO-20 MECHANICALDATA

74ACT273

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

S 8 (max.)

mm inch

P013L

9/11

74ACT273

TSSOP20 MECHANICAL DATA

DIM.

mm inch

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

A 1.1 0.433

A1 0.05 0.10 0.15 0.002 0.004 0.006

A2 0.85 0.9 0.95 0.335 0.354 0.374

b 0.19 0.30 0.0075 0.0118

c 0.09 0.2 0.0035 0.0079

D 6.4 6.5 6.6 0.252 0.256 0.260

E 6.25 6.4 6.5 0.246 0.252 0.256

E1 4.3 4.4 4.48 0.169 0.173 0.176

e 0.65 BSC 0.0256 BSC

K0

o

o

4

o

8

o

0

o

4

8

L 0.50 0.60 0.70 0.020 0.024 0.028

o

A

PIN 1 IDENTIFICATION

10/11

A2

A1

b

e

K

c

L

E

D

E1

1

74ACT273

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are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.

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11/11