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