Philips Semiconductors
Product specification
Dual D-type flip-flop
74ABT74
QUICK REFERENCE DATA
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 (SD) 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.
CONDITIONS
= 25°C;
T
SYMBOL PARAMETER
TYPICAL UNIT
amb
GND = 0V
Propagation
delay
CPn to
Qn, Qn
t
t
3.0
ns
PLH
PHL
2.5
C = 50pF;
L
CC
V
= 5V
t
t
Output to
Output skew
OSLH
OSHL
0.5
3
ns
pF
µA
Input
capacitance
C
V = 0V or V
I CC
IN
Total supply
current
Outputs disabled;
= 5.5V
I
50
CC
V
CC
LOGIC SYMBOL (IEEE/IEC)
PIN CONFIGURATION
RD1
D0
1
2
3
4
5
14
V
CC
4
&
S
5
13 RD1
12 D1
3
C1
CP0
SD1
Q0
2
1D
6
11 CP1
10 SD1
1
R
10
Q0
6
7
9
8
Q1
Q1
S
9
11
GND
C2
12
2D
8
SF00045
13
R
PIN DESCRIPTION
PIN NUMBER SYMBOL
NAME AND FUNCTION
SF00047
1, 2, 3, 4, 10,
11, 12, 13
RDn, Dn,
CPn, SDn
Data inputs
LOGIC DIAGRAM
5, 6, 8, 9
Qn, Qn
GND
Data outputs
7
Ground (0V)
14
V
CC
Positive supply voltage
4, 10
SD
LOGIC SYMBOL
5, 9
2
12
1, 13
RD
Q
Q
D0 D1
6, 8
3
4
CP0
3, 11
2, 12
CP
D
SD0
RD0
CP1
SD1
RD1
1
11
10
13
V
= Pin 14
CC
GND = Pin 7
Q0 Q0 Q1 Q1
SF00048
V
= Pin 14
CC
GND = Pin 7
5
6
9
8
SA00359
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE OUTSIDE NORTH AMERICA
NORTH AMERICA
74ABT74 N
DWG NUMBER
SOT27-1
14-Pin Plastic DIP
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
74ABT74 N
74ABT74 D
74ABT74 DB
74ABT74 PW
14-Pin plastic SO
74ABT74 D
SOT108-1
SOT337-1
SOT402-1
14-Pin Plastic SSOP Type II
14-Pin Plastic TSSOP Type I
74ABT74 DB
74ABT74PW DH
1
1995 Sep 22
853-1813 15793