74ALS74 データシートの表示（PDF） - Philips Electronics
部品番号
コンポーネント説明
メーカー
74ALS74 Datasheet PDF : 10 Pages
| |||
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
Share Link: 