Philips 74ABT74N, 74ABT74DB, 74ABT74D Datasheet

Philips Semiconductors Product specification

CC

74ABT74Dual D-type flip-flop

QUICK REFERENCE DAT A

CONDITIONS

= 25°C;

SYMBOL PARAMETER

T

amb

GND = 0V

TYPICAL UNIT

Propagation

IN

CC

delay
CPn to

n

Qn, Q
Output to

Output skew
Input

capacitance
Total supply

current

CL = 50pF;

= 5V

V

CC

VI = 0V or V

CC

Outputs disabled;

= 5.5V

V

CC

3.0

2.5

0.5 ns

3 pF

50 µA

t

PLH

t

PHL

t

OSLH

t

OSHL

C

I

PIN CONFIGURA TION

R

CP0
S

GND

D1
D0

D1
Q0
Q

1
2
3
4
5
6

0

14

V

CC

13

D1

R

12

D1

11

CP1

10

SD1

9

Q1

87

Q1

PIN DESCRIPTION

PIN NUMBER SYMBOL NAME AND FUNCTION

1, 2, 3, 4, 10,

11, 12, 13

RDn, Dn,

CPn, S

Dn

Data inputs

5, 6, 8, 9 Qn, Qn Data outputs

7 GND Ground (0V)

14 V

Positive supply voltage

CC

LOGIC SYMBOL

212

ns

SF00045

DESCRIPTION

The 74ABT74 is a dual positive edge-triggered D-type flip-flop
featuring individual data, clock, set, and reset inputs; also true and
complementary outputs. Set (S

D) and reset (RD) are asynchronous
active low inputs and operate independently of the clock input.
When set and reset are inactive (high), data at the D input is
transferred to the Q and Q

outputs on the low-to-high transition of
the clock. Data must be stable just one setup time prior to the
low-to-high transition of the clock for predictable operation. Clock
triggering occurs at a voltage level and is not directly related to the
transition time of the positive-going pulse. Following the hold time
interval, data at the D input may be changed without affecting the
levels of the output.

LOGIC SYMBOL (IEEE/IEC)

4
3
2
1

10

11
12
13

&

S

C1

1D

R

S

C2

2D
R

5

6

9

8

SF00047

LOGIC DIAGRAM

4, 10

S

D

1, 13

D

R

5, 9

Q

VCC = Pin 14
GND = Pin 7

3
4
1

11
10
13

D0 D1

CP0
S

D0
RD0
CP1

D1

S

D1

R

Q0 Q0Q1Q1

56 98

SA00359

CP

D

VCC = Pin 14
GND = Pin 7

3, 11

2, 12

6, 8

ORDERING INFORMATION

PACKAGES TEMPERATURE RANGE OUTSIDE NORTH AMERICA NORTH AMERICA DWG NUMBER

14-Pin Plastic DIP –40°C to +85°C 74ABT74 N 74ABT74 N SOT27-1
14-Pin plastic SO –40°C to +85°C 74ABT74 D 74ABT74 D SOT108-1
14-Pin Plastic SSOP Type II –40°C to +85°C 74ABT74 DB 74ABT74 DB SOT337-1
14-Pin Plastic TSSOP Type I –40°C to +85°C 74ABT74 PW 74ABT74PW DH SOT402-1

1

853-1813 157931995 Sep 22

Q

SF00048

Philips Semiconductors Product specification

OPERATING

SYMBOL

PARAMETER

UNIT

74ABT74Dual D-type flip-flop

FUNCTION TABLE

INPUTS OUTPUTS

SD RD CP D Q Q

OPERATING

MODE

L H X X H L Asynchronous set
H L X X L H

Asynchronous

reset
L L X X H H Undetermined*
H H ↑ h H L Load “1”
H H ↑ l L H Load “0”
H H ↑ X NC NC Hold

NOTES:

H = High voltage level
h = High voltage level one setup time prior to low-to-high

clock transition
L = Low voltage level
l = Low voltage level one setup time prior to low-to-high

clock transition
NC= No change from the previous setup
X = Don’t care
↑ = Low-to-high clock transition

= Not low-to-high clock transition

↑

* = This setup is unstable and will change when either set

or reset return to the high level.

ABSOLUTE MAXIMUM RATINGS

SYMBOL

V

CC

I

IK

V

I

I

OK

V

OUT

I

OUT

T

stg

DC supply voltage –0.5 to +7.0 V
DC input diode current VI < 0 –18 mA
DC input voltage
DC output diode current VO < 0 –50 mA
DC output voltage
DC output current output in Low state 40 mA
Storage temperature range –65 to 150 °C

PARAMETER CONDITIONS RATING UNIT

3

3

1, 2

–1.2 to +7.0 V

output in Off or High state –0.5 to +5.5 V

NOTES:

1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability .

2. The performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create junction
temperatures which are detrimental to reliability. The maximum junction temperature of this integrated circuit should not exceed 150°C.

3. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.

RECOMMENDED OPERATING CONDITIONS

LIMITS

MIN MAX

V

CC

V
V
V
I

OH

I

OL

∆t/∆v Input transition rise or fall rate 0 10 ns/V

T

amb

DC supply voltage 4.5 5.5 V
Input voltage 0 V

I

High-level input voltage 2.0 V

IH

Low-level input voltage 0.8 V

IL

High-level output current –15 mA
Low-level output current 20 mA

Operating free-air temperature range –40 +85 °C

CC

V

1995 Sep 22

2