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MC74VHC240DWR2G 参数 Datasheet PDF下载

MC74VHC240DWR2G图片预览
型号: MC74VHC240DWR2G
PDF下载: 下载PDF文件 查看货源
内容描述: 八路总线缓冲器/线路驱动器反相具有三态输出 [Octal Bus Buffer/Line Driver Inverting with 3-State Outputs]
分类和应用: 总线驱动器总线收发器逻辑集成电路光电二极管
文件页数/大小: 7 页 / 133 K
品牌: ONSEMI [ ON SEMICONDUCTOR ]
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MC74VHC240
SWITCHING WAVEFORMS
V
CC
OEA or OEB
50%
GND
GND
t
PHL
YA or YB
50% V
CC
t
PLH
YA or YB
t
PZL
50% V
CC
t
PZH
YA or YB
50% V
CC
t
PHZ
t
PLZ
HIGH
IMPEDANCE
V
OL
+0.3V
V
OH
-0.3V
HIGH
IMPEDANCE
A or B
50%
V
CC
Figure 2.
Figure 3.
TEST CIRCUITS
TEST POINT
OUTPUT
DEVICE
UNDER
TEST
DEVICE
UNDER
TEST
TEST POINT
OUTPUT
1 kΩ
CONNECT TO V
CC
WHEN
TESTING t
PLZ
AND t
PZL
.
CONNECT TO GND WHEN
TESTING t
PHZ
AND t
PZH
.
C
L
*
C
L
*
*Includes all probe and jig capacitance
*Includes all probe and jig capacitance
Figure 4. Test Circuit
Figure 5. Test Circuit
INPUT
Figure 6. Input Equivalent Circuit
http://onsemi.com
5