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PDF 74ABT74N Data sheet ( Hoja de datos )
| Número de pieza | 74ABT74N | |
| Descripción | Dual D-type flip-flop | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
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Philips Semiconductors
Dual D-type flip-flop
Product specification
74ABT74
QUICK REFERENCE DATA
SYMBOL PARAMETER
CONDITIONS
Tamb = 25°C;
GND = 0V
tPLH
tPHL
tOSLH
tOSHL
CIN
Propagation
delay
CPn to
Qn, Qn
Output to
Output skew
Input
capacitance
CL = 50pF;
VCC = 5V
VI = 0V or VCC
ICC
Total supply
current
Outputs disabled;
VCC = 5.5V
TYPICAL UNIT
3.0
2.5
ns
0.5 ns
3 pF
50 µA
PIN CONFIGURATION
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.
LOGIC SYMBOL (IEEE/IEC)
RD1 1
D0 2
CP0 3
SD1 4
Q0 5
Q0 6
GND 7
14 VCC
13 RD1
12 D1
11 CP1
10 SD1
9 Q1
8 Q1
SF00045
PIN DESCRIPTION
PIN NUMBER SYMBOL
NAME AND FUNCTION
1, 2, 3, 4, 10,
11, 12, 13
RDn, Dn,
CPn, SDn
Data inputs
5, 6, 8, 9
Qn, Qn Data outputs
7 GND Ground (0V)
14 VCC Positive supply voltage
LOGIC SYMBOL
2 12
4&
S
3
C1
2
1D
1
R
10
S
11
C2
12 2D
13 R
LOGIC DIAGRAM
SD 4, 10
RD 1, 13
3
4
1
11
10
13
VCC = Pin 14
GND = Pin 7
D0 D1
CP0
SD0
RD0
CP1
SD1
RD1
Q0 Q0 Q1 Q1
56 98
SA00359
CP 3, 11
D 2, 12
VCC = Pin 14
GND = Pin 7
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
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
OUTSIDE NORTH AMERICA
74ABT74 N
74ABT74 D
74ABT74 DB
74ABT74 PW
NORTH AMERICA
74ABT74 N
74ABT74 D
74ABT74 DB
74ABT74PW DH
5
6
9
8
SF00047
5, 9
Q
6, 8
Q
SF00048
DWG NUMBER
SOT27-1
SOT108-1
SOT337-1
SOT402-1
1995 Sep 22
1 853-1813 15793
1 page  
Philips Semiconductors
Dual D-type flip-flop
Product specification
74ABT74
TEST CIRCUIT AND WAVEFORMS
VCC
PULSE
GENERATOR
VIN
RT
D.U.T.
VOUT
CL
RL
Test Circuit for Outputs
DEFINITIONS
RL = Load resistor; see AC CHARACTERISTICS for value.
CL = Load capacitance includes jig and probe capacitance;
see AC CHARACTERISTICS for value.
RT = Termination resistance should be equal to ZOUT of
pulse generators.
90%
NEGATIVE
PULSE
POSITIVE
PULSE
10%
VM
10%
tW
VM
10%
tTHL (tF)
tTLH (tR)
90%
VM
90%
VM
tW
VM = 1.5V
Input Pulse Definition
90%
AMP (V)
0V
tTLH (tR)
tTHL (tF)
AMP (V)
10%
0V
FAMILY
INPUT PULSE REQUIREMENTS
Amplitude Rep. Rate tW
tR
tF
74ABT
3.0V
1MHz 500ns 2.5ns 2.5ns
SH00067
1995 Sep 22
5
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet 74ABT74N.PDF ] | |
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