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參數資料
| 型號： | HC74 |
| 廠商： | System Logic Semiconductor Co., Ltd. |
| 英文描述： | T-NPN-SI PWR AMP |
| 中文描述： | 雙D觸發器的設置和復位拖鞋（高性能硅柵CMOS） |
| 文件頁數： | 1/5頁 |
| 文件大小： | 51K |
| 代理商： | HC74 |
SL74HC74
S ystem Logic
Semiconductor
SLS
Dual D Flip-Flop with Set and Reset
High-Performance Silicon-Gate CMOS
The SL74HC74 is identical in pinout to the LS/ALS74. The device
inputs are compatible with standard CMOS outputs; with pullup
resistors, they are compatible with LS/ALSTTL outputs.
This device consists of two D flip-flops with individual Set, Reset,
and Clock inputs. Information at a D-input is transferred to the
corresponding Q output on the next positive going edge of the clock
input. Both Q and Q outputs are available from each flip-flop. The Set
and Reset inputs are asynchronous.
Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 2.0 to 6.0 V
Low Input Current: 1.0
μ
A
High Noise Immunity Characteristic of CMOS Devices
ORDERING INFORMATION
SL74HC74N Plastic
SL74HC74D SOIC
T
A
= -55
°
to 125
°
C for all packages
LOGIC DIAGRAM
PIN 14 =V
CC
PIN 7 = GND
PIN ASSIGNMENT
FUNCTION TABLE
Inputs
Outputs
Set
Reset
Clock
Data
Q
Q
L
H
X
X
H
L
H
L
X
X
L
H
L
L
X
X
H
*
H
*
H
H
H
H
L
H
H
L
L
H
H
H
L
X
No Change
H
H
H
X
No Change
H
H
X
No Change
*Both outputs will remain high as long as Set
and Reset are low, but the output states are
unpredictable if Set and Reset go high
simultaneously.
X = don’t care
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