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74ALS74A PDF даташит

Спецификация 74ALS74A изготовлена ​​​​«NXP Semiconductors» и имеет функцию, называемую «Dual D-type flip-flop with set and reset».

Детали детали

Номер произв 74ALS74A
Описание Dual D-type flip-flop with set and reset
Производители NXP Semiconductors
логотип NXP Semiconductors логотип 

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74ALS74A Даташит, Описание, Даташиты
INTEGRATED CIRCUITS
74ALS74A
Dual D-type flip-flop with set and reset
Product specification
IC05 Data Handbook
1996 Jul 01
Philips
Semiconductors









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74ALS74A Даташит, Описание, Даташиты
Philips Semiconductors
Dual D-type flip-flop with set and reset
Product specification
74ALS74A
DESCRIPTION
The 74ALS74 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.
TYPE
74ALS74A
TYPICAL fMAX
150MHz
TYPICAL
SUPPLY CURRENT
(TOTAL)
3.0mA
ORDERING INFORMATION
ORDER CODE
DESCRIPTION
COMMERCIAL RANGE
VCC = 5V ±10%,
Tamb = 0°C to +70°C
14-pin plastic DIP
74ALS74AN
14-pin plastic SO
74ALS74AD
14-pin plastic SSOP
Type II
74ALS74ADB
DRAWING
NUMBER
SOT27-1
SOT108-1
SOT337-1
PIN CONFIGURATION
RD0 1
D0 2
CP0 3
SD0 4
Q0 5
Q0 6
GND 7
14 VCC
13 RD1
12 D1
11 CP1
10 SD1
9 Q1
8 Q1
SF00045
INPUT AND OUTPUT LOADING AND FAN-OUT TABLE
PINS
DESCRIPTION
74ALS (U.L.)
HIGH/LOW
D0, D1
Data inputs
1.0/2.0
CP0, CP1
Clock inputs (active rising edge)
1.0/2.0
SD0, SD1
Set inputs (active-Low)
2.0/4.0
RD0, RD1
Reset inputs (active-Low)
2.0/4.0
Q0, Q1, Q0, Q1
Data outputs
20/80
NOTE: One (1.0) ALS unit load is defined as: 20µA in the High state and 0.1mA in the Low state.
LOGIC SYMBOL
IEC/IEEE SYMBOL
3
4
1
11
10
13
VCC = Pin 14
GND = Pin 7
2 12
D0 D1
CP0
SD0
RD0
CP1
SD1
RD1
Q0 Q0 Q1 Q1
56 98
SF00046
4&
S
3
C1
2 1D
1
R
10
S
11
C2
12 2D
13 R
LOAD VALUE
HIGH/LOW
20µA/0.2mA
20µA/0.2mA
40µA/0.4mA
40µA/0.4mA
0.4mA/8mA
5
6
9
8
SF00047
1996 Jul 01
2 853–1278 01670









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74ALS74A Даташит, Описание, Даташиты
Philips Semiconductors
Dual D-type flip-flop with set and reset
Product specification
74ALS74A
LOGIC DIAGRAM
SD 4, 10
RD 1, 13
CP 3, 11
D 2, 12
VCC = Pin 14
GND = Pin 7
5, 9
Q
6, 8
Q
SF00048
FUNCTION TABLE
INPUTS
OUTPUTS
OPERATING
SD RD CP D
Q
Q
MODE
LHXX
H
L Asynchronous set
HLXX
L
H Asynchronous reset
L LXX
H
H Undetermined*
HHh
H
L Load “1”
HH
l
L
H Load “0”
H H X NC NC Hold
H=
h=
L=
l=
NC =
X=
=
=
*=
High voltage level
High state must be present one setup time prior to
Low-to-High clock transition
Low voltage level
Low state must be present one setup time prior to
Low-to-High clock transition
No change from the previous setup
Don’t care
Low-to-High clock transition
Not Low-to-High clock transition
Both outputs will be High while both SD and RD are Low,
but the output states are unpredictable if SD and RD go
High simultaneously
ABSOLUTE MAXIMUM RATINGS
(Operation beyond the limit set forth in this table may impair the useful life of the device.
Unless otherwise noted these limits are over the operating free-air temperature range.)
SYMBOL
PARAMETER
VCC
VIN
IIN
VOUT
IOUT
Tamb
Tstg
Supply voltage
Input voltage
Input current
Voltage applied to output in High output state
Current applied to output in Low output state
Operating free-air temperature range
Storage temperature range
RECOMMENDED OPERATING CONDITIONS
SYMBOL
PARAMETER
VCC
VIH
VIL
IIk
IOH
IOL
Tamb
Supply voltage
High-level input voltage
Low-level input voltage
Input clamp current
High-level output current
Low-level output current
Operating free-air temperature range
RATING
–0.5 to +7.0
–0.5 to +7.0
–30 to +5
–0.5 to VCC
16
0 to +70
–65 to +150
UNIT
V
V
mA
V
mA
°C
°C
LIMITS
UNIT
MIN
NOM
MAX
4.5 5.0 5.5 V
2.0 V
0.8 V
–18 mA
–0.4 mA
8 mA
0 +70 °C
1996 Jul 01
3










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