SGS Thomson Microelectronics 74ACT273 Datasheet



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

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