參數(shù)資料
型號: 74VHC240
廠商: 意法半導(dǎo)體
英文描述: OCTAL BUS BUFFER WITH 3 STATE OUTPUTS INVERTED
中文描述: 八路總線緩沖器3態(tài)輸出倒立
文件頁數(shù): 2/8頁
文件大小: 65K
代理商: 74VHC240
TRUTH TABLE
INPUT
OUTPUT
Yn
H
L
Z
G
L
L
H
An
L
H
X
X:”H” or”L”
Z:Highimpedance
PIN DESCRIPTION
PIN No
1
2,4,6,8
9,7,5,3
11,13,15,17
18,16,14,12
19
10
20
SYMBOL
1G
1A1to1A4
2Y1to2Y4
2A1to2A4
1Y1to1Y4
2G
GND
V
CC
NAME AND FUNCTION
Output Enable Input
Data Inputs
Data Outputs
Data Inputs
Data Outputs
Output Enable Input
Ground (0V)
Positive Supply Voltage
ABSOLUTE MAXIMUM RATINGS
Symbol
V
CC
V
I
V
O
I
IK
I
OK
I
O
I
CC
orI
GND
T
stg
T
L
AbsoluteMaximumRatingsarethosevaluesbeyond whichdamage tothedevicemayoccur. Functionaloperationunderthese condition isnot implied.
Parameter
Value
-0.5to+7.0
-0.5to+7.0
-0.5toV
CC
+0.5
-20
±
20
±
25
±
75
-65to+150
300
Unit
V
V
V
mA
mA
mA
mA
o
C
o
C
Supply Voltage
DC Input Voltage
DC Output Voltage
DC Input Diode Current
DC Output Diode Current
DC Output Current
DC V
CC
or Ground Current
Storage Temperature
Lead Temperature (10 sec)
RECOMMENDED OPERATING CONDITIONS
Symbol
V
CC
V
I
V
O
T
op
dt/dv
Parameter
Value
2.0to5.5
0to5.5
0toV
CC
-40to+85
0to100
0to20
Unit
V
V
V
o
C
ns/V
ns/V
Supply Voltage
Input Voltage
Output Voltage
Operating Temperature
Input Rise and Fall Time (see note 1) (V
CC
= 3.3
±
0.3V)
(V
CC
= 5.0
±
0.5V)
1)V
IN
from30%to70%ofV
CC
INPUT EQUIVALENTCIRCUIT
74VHC240
2/8
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