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參數資料
| 型號： | MC74HC948E-02ADT |
| 廠商： | Motorola, Inc. |
| 英文描述： | Octal 3-State Noninverting Transparent Latch |
| 中文描述： | 八路三態同相透明鎖存器 |
| 文件頁數： | 5/7頁 |
| 文件大小： | 246K |
| 代理商： | MC74HC948E-02ADT |
MC54/74HC573A
High–Speed CMOS Logic Data
DL129 — Rev 6
5
MOTOROLA
SWITCHING WAVEFORMS
VCC
GND
tf
tr
INPUT D
Q
10%
90%
10%
90%
tTLH
tPLH
tPHL
tTHL
OUTPUT
ENABLE
Q
Q
50%
50%
1.3 V
90%
10%
tPZL
tPLZ
tPZH
tPHZ
3.0 V
GND
HIGH
IMPEDANCE
VOL
VOH
HIGH
IMPEDANCE
* Includes all probe and jig capacitance
CL*
TEST POINT
DEVICE
UNDER
TEST
OUTPUT
* Includes all probe and jig capacitance
CL*
TEST POINT
DEVICE
UNDER
TEST
OUTPUT
CONNECT TO VCC WHEN
TESTING tPLZ AND tPZL.
CONNECT TO GND WHEN
TESTING tPHZ AND tPZH.
1 k
Figure 1.
Figure 2.
Figure 3.
Figure 4.
VCC
GND
50%
50%
LATCH
ENABLE
tPLH
tPHL
Q
tw
Figure 5. Test Circuit
Figure 6. Test Circuit
EXPANDED LOGIC DIAGRAM
D
LE
Q
D0
2
19Q0
D
LE
Q
D1
3
18Q1
D
LE
Q
D2
4
17Q2
D
LE
Q
D3
5
16Q3
D
LE
Q
D4
6
15Q4
D
LE
Q
D5
7
14Q5
D
LE
Q
D6
8
13Q6
D
LE
Q
D7
9
12Q7
LATCH ENABLE
OUTPUT ENABLE
11
1
VCC
GND
VCC
GND
50%
50%
VALID
tSU
th
INPUT D
LATCH
ENABLE
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