SGS Thomson Microelectronics 74ACT74TTR, 74ACT74MTR, 74ACT74M, 74ACT74B Datasheet

74ACT74

DUAL D-TYPE FLIP FLOP WITH PRESET AND CLEAR

■ HIGH SPEED:

f

= 250MHz (TYP.) at VCC = 5V

MAX

■ LOW POWER DISSIPATION:

I

= 4µA(MAX.) at TA=25°C

CC

■ COMPATIBLE WITH TTL OUTPUTS

V

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

IH

■ 50Ω TRANSMISSION LINE DRIVING

CAPABILITY

■ SYMMETRICAL OUTPUT IMPEDANCE:

|I

| = IOL = 24mA (MIN)

OH

■ BALANCED PROPAGATION DELAYS:

t

≅ t

PLH

■ OPERATING VOL TAGE RANGE:

V

CC

■ PIN AND FUNCTION COMPATIBLE WITH

PHL

(OPR) = 4.5V to 5.5V

74 SERIES 74

■ IMPROVED LATCH-UP IMMUNITY

DESCRIPTION

The 74ACT74 is an advanced high-speed CMOS
DUAL D-TYPE FLIP FLOP WITH PRESET AND
CLEAR fabricated with sub-micron silicon gate
and double-layer metal wiring C

2

MOS tecnology.
A signal on the D INPUT is transferred to the Q
and Q

OUTPUTS during the positive going

transition of the clock pulse.

TSSOPDIP SOP

ORDER CODES

PACKAGE TUBE T & R

DIP 74ACT74B

SOP 74ACT74M 74ACT74MTR

TSSOP 74ACT74TTR

CLEAR and PRESET are independent of the
clock and accomplished by a low setting on the
appropriate input.
The device is designed to interface directly High
Speed CMOS systems with TTL, NMOS and
CMOS output voltage levels.
All inputs and outputs are equipped with
protection circuits against stat ic discharge, giving
them 2KV ESD immunity and transient excess
voltage.

PIN CONNECTION AND IEC LOGIC SYMBOLS

1/12April 2001

74ACT74

INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION

PIN No SYMBOL NAME AND FUNCTION

1, 13 1CLR
2, 12 1D, 2D Data Inputs

3, 11 1CK, 2CK Clock Input

4, 10 1PR

5, 9 1Q, 2Q True Flip-Flop Outputs
6, 8 1Q

7 GND Ground (0V)

14 V

TRUTH TABLE

, 2CLR

, 2PR Asyncronous Set - Direct

, 2Q Complement Flip-Flop

CC

Asyncronous Reset ­Direct Input

(LOW to HIGH, Edge
Triggered)

Input

Outputs

Positive Supply Voltage

INPUTS OUTPUTS

CLR

PR DCKQ Q

L H X X L L CLEAR

H L X X H L PRESET

LLXXHH

HHL LH
HHH HL
HHX

X : Don’t Care

Q

n

Q

n

LOGIC DIAGRAM

FUNCTION

NO CHANGE

This log i c diagram has not be used to estimate propagation del ays

2/12

74ACT74

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

V

V

I

I

OK

I

I

or I

CC

T

T

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Value Unit

V

V

V

T

dt/dv

1) VIN from 0.8V to 2.0V

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

Storage Temperature

stg

Lead Temperature (10 sec)

L

Supply Voltage

CC

Input Voltage 0 to V

I

Output Voltage 0 to V

O

Operating Temperature

op

Input Rise and Fall Time V

= 4.5 to 5.5V (note 1)

CC

-0.5 to +7 V

± 20 mA
± 20 mA
± 50 mA

± 200 mA

-65 to +150 °C
300 °C

4.5 to 5.5 V

CC
CC

-55 to 125 °C
8 ns/V

V
V

V
V

3/12

74ACT74

DC SPECIFICATIONS

Test Condition Value

T

Symbol Parameter

V

CC

(V)

V

V

V

V

I

CCT

I

I

OLD

I

OHD

1) Maxim um test duration 2ms, one output loaded at time

2) Incid ent wave switchi ng is guarant eed on transmission lines with i m pedances as low as 50Ω

High Level Input

IH

Voltage
Low Level Input

IL

Voltage
High Level Output

OH

Voltage

Low Level Output

OL

Voltage

I

Input Leakage Cur-

I

rent
Max ICC/Input

Quiescent Supply

CC

Current
Dynamic Output

Current (note 1, 2)

4.5 VO = 0.1 V or
V

-0.1V

CC

4.5 VO = 0.1 V or
V

5.5 1.5 0.8 0.8 0.8

4.5

5.5

4.5

5.5

4.5

5.5

4.5

5.5

V

5.5

5.5

V

5.5

V

5.5

V

-0.1V

CC

=-50 µA

I

O

I

=-50 µA

O

I

=-24 mA

O

I

=-24 mA

O

=50 µA

I

O

I

=50 µA

O

I

=24 mA

O

I

=24 mA

O

= VCC or GND

I

VI = VCC - 2.1V

= VCC or GND

I

= 1.65 V max

OLD

= 3.85 V min

OHD

= 25°C

A

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

2.0 1.5 2.0 2.0

1.5 0.8 0.8 0.8

4.4 4.49 4.4 4.4

5.4 5.49 5.4 5.4

3.86 3.76 3.7

4.86 4.76 4.7

0.001 0.1 0.1 0.1

0.001 0.1 0.1 0.1

0.36 0.44 0.5

0.36 0.44 0.5

± 0.1 ± 1 ± 1 µA

0.6 1.5 1.6 mA
44040µA

-40 to 85°C -55 to 125°C

75 50 mA

-75 -50 mA

Unit

V5.5 2.0 1.5 2.0 2.0

V

V

AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, RL = 500 Ω, Input tr = tf = 3ns)

Test Condition Value

T

Symbol Parameter

t

PLH tPHL

t

PLH tPHL

Propagation Delay
Time CK to Q or Q

Propagation Delay
Time PR

or CLR to

Q or Q

t

Pulse Width HIGH

W

or LOW, CK or PR
or CLR

Setup Time D to CK

t

s

HIGH or LOW

t

Hold Time D to CK

h

HIGH or LOW

t

REM

f

MAX

(*) Vol tage range is 5.0V ± 0.5V

Removal Tim|

or CLR to CK

PR
Maximum Clock

Frequency

= 25°C

V

CC

(V)

(*)

5.0

(*)

5.0

(*)

5.0

(*)

5.0

(*)

5.0

(*)

5.0

(*)

5.0

A

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

5.0 10.0 11.0 11.0 ns

5.0 10.0 11.0 11.0 ns

1.5 5.0 6.0 6.0 ns

0.5 3.0 3.5 3.5 ns

-0.5 1.0 1.0 1.0 ns

-0.7 1.0 1.0 1.0 ns

100 250 85 85 MHz

-40 to 85°C -55 to 125°C

Unit

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