參數(shù)資料
型號: MC74LCX374MEL
廠商: ON SEMICONDUCTOR
元件分類: 通用總線功能
英文描述: Low-Voltage CMOS Octal D-Type Flip-Flop With 5 V−Tolerant Inputs and Outputs (3−State, Non−Inverting)
中文描述: LVC/LCX/Z SERIES, 8-BIT DRIVER, TRUE OUTPUT, PDSO20
封裝: EIAJ, SO-20
文件頁數(shù): 2/8頁
文件大小: 102K
代理商: MC74LCX374MEL
MC74LCX374
http://onsemi.com
2
Figure 1. Pinout: 20Lead
(Top View)
19
20
18
17
16
15
14
2
1
3
4
5
6
7
V
CC
13
8
12
9
11
10
O7
D7
D6
O6
O5
D5
D4
O4
CP
OE
O0
D0
D1
O1
O2
D2
D3
O3
GND
O0
D0
O1
D1
O2
D2
O3
D3
O4
D4
O5
D5
O6
D6
O7
D7
Figure 2. LOGIC DIAGRAM
nCP
Q
D
nCP
Q
D
nCP
Q
D
nCP
Q
D
nCP
Q
D
nCP
Q
D
nCP
Q
D
nCP
Q
D
CP
OE
3
4
7
8
13
14
17
18
2
5
6
9
12
15
16
19
11
1
PIN NAMES
Function
Output Enable Input
Clock Pulse Input
Data Inputs
3State Outputs
Pins
OE
CP
D0D7
O0O7
TRUTH TABLE
INPUTS
OUTPUTS
OE
CP
Dn
On
OPERATING MODE
L
L
l
h
L
H
Load and Read Register
L
X
NC
Hold and Read Register
H
X
Z
Hold and Disable Outputs
H
H
l
h
Z
Z
Load Internal Register and Disable Outputs
H
h
L
l
NC =
X
Z
=
=
=
=
High Voltage Level
High Voltage Level One Setup Time Prior to the LowtoHigh Clock Transition
Low Voltage Level
Low Voltage Level One Setup Time Prior to the LowtoHigh Clock Transition
No Change, State Prior to LowtoHigh Clock Transition
High or Low Voltage Level and Transitions are Acceptable
High Impedance State
LowtoHigh Transition
Not a LowtoHigh Transition; For I
CC
Reasons, DO NOT FLOAT Inputs
=
=
=
=
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