Datasheet M74HCT273 Datasheet (ST)

M74HCT273

OCTAL D TYPE FLIP FLOP W ITH CLEAR

■ HIGH SPEED :

f

= 80 MHz (TYP.) at VCC = 4.5V

MAX

■ LOW POWER DISSIPATION:

I

=4µA(MAX.) at TA=25°C

CC

■ COMPAT I B LE WITH TT L OUTPUTS :

V

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

IH

■ SYMMETRICAL OUTPUT IMPEDANCE:

|I

| = IOL = 4mA (MIN)

OH

■ BALANCED PROPAGATION DELAYS:

t

≅ t

PHL

PLH

■ PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 273

DESCRIPTION

The M74HCT273 is an high speed CMOS OCTAL
D TYPE FLIP FLOP WITH CLEAR fabricated with
silicon gate C

2

MOS technology.

Information signals applied to D inputs are
transferred to the Q output s on the positive-goi ng
edge of the clock pulse.

TSSOPDIP SOP

ORDER CODES

PACKAGE TUBE T & R

DIP M74HCT273B1R

SOP M74HCT273M1R M74HCT273RM13TR

TSSOP M74HCT273TTR

When the CLEAR

input is held low, the Q output
are in the low logic level independent of the other
inputs.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.

PIN CONNECTION AND IEC LOGIC SYMBOLS

1/10August 2001

M74HCT273

INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION

PIN No SYMBOL NAME AND FUNCTION

1 CLEAR

2, 5, 6, 9, 12,

15, 16, 19

3, 4, 7, 8, 13,

14, 17, 18

11 CLOCK
10 GND Ground (0V)

20 Vcc Positive Supply Voltage

TRUTH TABLE

Q0 to Q7 Flip Flop Outputs

D0 to D7 Data Inputs

Master Reset Input
(Active LOW)

Clock Input (LOW to
HIGH, Edge Triggered)

CLEAR

L X X L CLEAR

HLL
HHH
H X Qn NO CHANGE

X : Don’t Care

LOGIC DIAGRAM

INPUTS OUTPUTS

FUNCTION

CLOCK D Q

This log i c diagram has not be used to esti m ate propagation delays

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M74HCT273

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

V

V

I

I

OK

I

I

or I

CC

P

T

T

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
(*) 500mW at 65

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Value Unit

V

V

V
T
t

r

Supply Voltage

CC

DC Input Voltage -0.5 to VCC + 0.5

I

DC Output Voltage -0.5 to VCC + 0.5

O

DC Input Diode Current

IK

DC Output Diode Current
DC Output Current

O

DC VCC or Ground Current

GND

Power Dissipation

D

Storage Temperature

stg

Lead Temperature (10 sec)

L

°C; derate to 300mW by 10mW/°C from 65°C to 85°C

Supply Voltage

CC

Input Voltage 0 to V

I

Output Voltage 0 to V

O

Operating Temperature

op

, t

Input Rise and Fall Time (VCC = 4.5 to 5.5V)

f

-0.5 to +7 V

± 20 mA
± 20 mA
± 25 mA
± 50 mA

500(*) mW

-65 to +150 °C

300 °C

4.5 to 5.5 V

CC
CC

-55 to 125 °C
0 to 500 ns

V
V

V
V

DC SPECIFICATIONS

Symbol Parameter

V

V

V

V

I

∆ I

High Level Input

IH

Voltage

Low Level Input

IL

Voltage

High Level Output

OH

Voltage
Low Level Output

OL

Voltage

I

Input Leakage

I

Current
Quiescent Supply

CC

Current
Additional Worst

CC

Case Supply
Current

Test Condition Value

T

= 25°C

V

CC

(V)

A

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

4.5
to

2.0 2.0 2.0 V

5.5

4.5
to

0.8 0.8 0.8 V

5.5

4.5

4.5

5.5

5.5

IO=-20 µA

I

=-4.0 mA

O

IO=20 µA

I

=4.0 mA

O

= VCC or GND

V

I

V

= VCC or GND

I

5.5 Per Input pin

= 0.5V or

V

I

V

= 2.4V

I

4.4 4.5 4.4 4.4

4.18 4.31 4.13 4.10

0.0 0.1 0.1 0.1

0.17 0.26 0.33 0.40
± 0.1 ± 1 ± 1 µA

2.0 2.9 3.0 mA

Other Inputs at

V

or GND

CC

I

= 0

O

-40 to 85°C -55 to 125°C

Unit

V

V

44080µA

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M74HCT273

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

Test Conditions Value

T

Symbol Parameter

t

TLH tTHL

t

PLH tPHL

Output Transition
Time

Propagation Delay
Time
(CLOCK - Q)

tPHL

f

MAX

t

W(H)

t

W(L)

t

W(L)

t

REM

Propagation Delay
Time
(CLEAR

Maximum Clock
Frequency

Minimum Pulse
(CLOCK)

Minimum Pulse
(CLEAR

Minimum Set-Up

t

s

Time
Minimum Hold

t

h

Time
Minimum Removal

Time (CLEAR

- Q)

)

V

CC

(V)

4.5 9151922ns

4.5 19 30 38 45 ns

4.5 22 32 40 48 ns

4.5 30 80 24 20 MHz

4.5 7151922ns

4.5 7151922ns

4.5 4151922ns

4.5 0 0 0 ns

)

4.5 4101315ns

= 25°C

A

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

-40 to 85°C -55 to 125°C

Unit

CAPACITIVE CHARACTERISTICS

Test Condition Value

= 25°C

Symbol Parameter

V

CC

(V)

C

C

1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without

load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
FLOP), and the total CP D when n pcs of FL IP FLOP oper at e can be gaine d by the following equations: CPD (total) = 32 + 11 x n

Input Capacitance

IN

Power Dissipation

PD

Capacitance (note 1)5.0 29 pF

5.0 5101010pF

T

A

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

-40 to 85°C -55 to 125°C

= CPD x VCC x fIN + ICC/8 (per FL IP

CC(opr)

Unit

4/10

M74HCT273

TEST CIRCUIT

CL = 50pF or equivalent (in cludes jig and probe capaci tance)
R

= Z

of pulse generator (typically 50Ω)

T

OUT

WAVEFORM 1: PROPAGATION DELAY TIME, MINIMUM PULSE WIDTH (CLOCK), SETUP AND
HOLD TIME (nD TO CLOCK), CLOCK MAXIMUM FREQUENCY (f=1MHz; 50% duty cycle)

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M74HCT273

WAVEFORM 2 :PROPAGATION DELAY TIME ( f= 1 MHz; 50% duty cycl e )

WAVEFORM 3 : MINIMUM PULSE WIDTH (CLEAR), MINIMUM REMOVAL TIME (C LEAR TO
CLOCK)(f=1MHz; 50% duty cycle)

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M74HCT273

Plastic DIP-20 (0.25) MECHANICAL DATA

mm. inch

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

P001J

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M74HCT273

SO-20 MECHANICAL DATA

DIM.

MIN. TYP MAX. MIN. TYP. MAX.

A 2.65 0.104
a1 0.1 0.2 0.004 0.008
a2 2.45 0.096

b 0.35 0.49 0.014 0.019

b1 0.23 0.32 0.009 0.012

C 0.5 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 0.300

L 0.50 1.27 0.020 0.050

M 0.75 0.029

S8° (max.)

mm. inch

8/10

PO13L

M74HCT273

TSSOP20 MECHANICAL DATA

mm. inch

DIM.

MIN. TYP MAX. MIN. TYP. MAX.

A 1.2 0.047

A1 0.05 0.15 0.002 0.004 0.006

A2 0.8 1 1.05 0.031 0.039 0.041

b 0.19 0.30 0.007 0.012

c 0.09 0.20 0.004 0.0089

D 6.4 6.5 6.6 0.252 0.256 0.260

E 6.2 6.4 6.6 0.244 0.252 0.260

E1 4.3 4.4 4.48 0.169 0.173 0.176

e 0.65 BSC 0.0256 BSC

K0° 8°0° 8°

L 0.45 0.60 0.75 0.018 0.024 0.030

A2

A

A1

b

e

K

c

L

E

D

E1

PIN 1 IDENTIFICATION

1

0087225C

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M74HCT273

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systems without express written approval of STMicroelectronics.

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