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參數(shù)資料
| 型號： | MC74HC257 |
| 廠商： | Motorola, Inc. |
| 英文描述： | 40 AMP MINI-ISO AUTOMOTIVE RELAY |
| 中文描述： | 四2輸入數(shù)據(jù)選擇器/多路與三態(tài)輸出 |
| 文件頁數(shù)： | 4/6頁 |
| 文件大小： | 175K |
| 代理商： | MC74HC257 |
MC74HC257
MOTOROLA
High–Speed CMOS Logic Data
DL129 — Rev 6
4
SWITCHING WAVEFORMS
Figure 1.
Figure 2.
Figure 3.
VCC
GND
tf
tr
NIBBLE INPUT
A OR B
OUTPUT Y
10%
90%
10%
90%
tTLH
tPLH
tPHL
tTHL
VCC
GND
50%
SELECT
tPLH
tPHL
50%
OUTPUT Y
VALID
VALID
OUTPUT
ENABLE
OUTPUT Y
OUTPUT Y
50%
50%
50%
90%
10%
tPZL
tPLZ
tPZH
tPHZ
VCC
GND
HIGH
IMPEDANCE
VOL
VOH
HIGH
IMPEDANCE
TEST CIRCUITS
* Includes all probe and jig capacitance
CL*
TEST POINT
DEVICE
UNDER
TEST
OUTPUT
Figure 4.
* Includes all probe and jig capacitance
CL*
TEST POINT
DEVICE
UNDER
TEST
OUTPUT
Figure 5.
CONNECT TO VCC WHEN
TESTING tPLZ AND tPZL.
CONNECT TO GND WHEN
TESTING tPHZ AND tPZH.
1 k
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相關代理商/技術參數(shù) |
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| MC74HC257D | 制造商:Motorola Inc 功能描述: |
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| MC74HC257N | 制造商:Motorola Inc 功能描述: |
| MC74HC257ND | 制造商:Motorola Inc 功能描述: |
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