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74HCT245DTR2G 参数 Datasheet PDF下载

74HCT245DTR2G图片预览
型号: 74HCT245DTR2G
PDF下载: 下载PDF文件 查看货源
内容描述: [IC HCT SERIES, 8-BIT TRANSCEIVER, TRUE OUTPUT, PDSO20, LEAD FREE, TSSOP-20, Bus Driver/Transceiver]
分类和应用: 光电二极管输出元件逻辑集成电路
文件页数/大小: 8 页 / 100 K
品牌: ONSEMI [ ON SEMICONDUCTOR ]
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74HCT245
3V
DIR
1.5V
GND
3V
A or B
t
PLH
B or A
1.5V
1.5V
GND
t
PHL
V
OH
V
OL
A or B
A or B
OE
1.5V
t
PZL
1.5V
t
PZH
1.5V
t
PHZ
t
PLZ
1.5V
GND
HIGH
IMPEDANCE
V
OL
+0.3V
V
OH
-0.3V
HIGH
IMPEDANCE
3V
Figure 3. Switching Waveform
Figure 4. Switching Waveform
TEST POINT
OUTPUT
DEVICE
UNDER
TEST
DEVICE
UNDER
TEST
TEST POINT
OUTPUT
1 kW
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 5. Test Circuit
Figure 6. Test Circuit
http://onsemi.com
5