參數(shù)資料
型號: MC54HC157
廠商: Motorola, Inc.
英文描述: Quad 2-Input Data Selectors/Multiplexers
中文描述: 四2輸入數(shù)據(jù)選擇器/多路復(fù)用器
文件頁數(shù): 4/6頁
文件大?。?/td> 222K
代理商: MC54HC157
MC54/74HC157A
MOTOROLA
High–Speed CMOS Logic Data
DL129 — Rev 6
4
SWITCHING WAVEFORMS
INPUT A OR B
Figure 1. HC157A
Figure 2. Y versus Select, Noninverted
OUTPUT
ENABLE
tPLH
tPHL
tr
tf
VCC
GND
tTHL
tTLH
10%
590%
10%
50%
Figure 3. HC157A
OUTPUT Y
EXPANDED LOGIC DIAGRAM
4
7
9
12
2
3
5
6
11
10
14
13
15
1
A0
B0
A1
B1
A2
B2
A3
B3
Y0
Y1
Y2
Y3
OUTPUT ENABLE
SELECT
DATA
OUTPUTS
NIBBLE
OUTPUTS
* Includes all probe and jig capacitance
CL*
TEST POINT
DEVICE
UNDER
TEST
OUTPUT
Figure 4. Test Circuit
tr
tf
VCC
GND
OUTPUT Y
tPHL
tPLH
10%
590%
10%
590%
tTLH
tTHL
tr
tf
VCC
GND
SELECT
OUTPUT Y
tPHL
tPLH
tTLH
tTHL
10%
590%
10%
590%
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