Datasheet

Philips Semiconductors Product specification
74ABT74Dual D-type flip-flop
1
853-1813 157931995 Sep 22
QUICK REFERENCE DATA
SYMBOL PARAMETER
CONDITIONS
T
amb
= 25°C;
GND = 0V
TYPICAL UNIT
t
PLH
t
PHL
Propagation
delay
CPn to
Qn, Q
n
C
L
= 50pF;
V
CC
= 5V
3.0
2.5
ns
t
OSLH
t
OSHL
Output to
Output skew
CC
0.5 ns
C
IN
Input
capacitance
V
I
= 0V or V
CC
3 pF
I
CC
Total supply
current
Outputs disabled;
V
CC
= 5.5V
50 µA
PIN CONFIGURATION
14
13
12
11
10
9
87
6
5
4
3
2
1
GND
V
CC
SD1
Q1
Q1
CP1
R
D1
D1
R
D1
D0
Q
0
CP0
S
D1
Q0
SF00045
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
CC
Positive supply voltage
LOGIC SYMBOL
Q0 Q0Q1Q1
56 98
V
CC
= Pin 14
GND = Pin 7
3
4
1
11
10
13
CP0
S
D0
RD0
CP1
S
D1
R
D1
D0 D1
212
SA00359
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
5
6
9
8
&
S
S
C1
C2
R
1D
2D
R
SF00047
LOGIC DIAGRAM
V
CC
= Pin 14
GND = Pin 7
5, 9
6, 8
Q
Q
4, 10
1, 13
3, 11
2, 12
S
D
R
D
CP
D
SF00048
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