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參數(shù)資料
| 型號： | 74HC148 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 8-LINE TO 3-LINE PRIORITY ENCODERS |
| 中文描述： | 8線三線優(yōu)先編碼器 |
| 文件頁數(shù)： | 3/11頁 |
| 文件大?。?/td> | 252K |
| 代理商： | 74HC148 |
PIN DESCRIPTION
PIN No
9, 7, 6
11, 12, 13,
1, 2, 3, 4,
10
15
5
14
8
16
SYMBOL
A0 to A2
0 to 7
NAME AND FUNCTION
Data Outputs
Data Inputs
EO
EI
GS
GND
V
CC
Enable Output
Enable Input
Priority Flag Output
Ground (0V)
Positive Supply Voltage
IEC LOGIC SYMBOL
ABSOLUTE MAXIMUM RATINGS
Symbol
V
CC
V
I
V
O
I
IK
I
OK
I
O
I
CC
or I
GND
P
D
T
stg
T
L
AbsoluteMaximumRatingsarethose values beyond whichdamage tothedevicemayoccur. Functional operationunder theseconditionisnotimplied.
(*)500 mW:
65
o
C derate to300 mWby 10mW/
o
C: 65
o
C to85
o
C
Parameter
Value
-0.5 to +7
-0.5 to V
CC
+ 0.5
-0.5 to V
CC
+ 0.5
±
20
±
20
±
25
±
50
500 (*)
-65 to +150
300
Unit
V
V
V
mA
mA
mA
mA
mW
o
C
o
C
Supply Voltage
DC Input Voltage
DC Output Voltage
DC Input Diode Current
DC Output Diode Current
DC Output Source Sink Current Per Output Pin
DC V
CC
or Ground Current
Power Dissipation
Storage Temperature
Lead Temperature (10 sec)
RECOMMENDED OPERATING CONDITIONS
Symbol
V
CC
V
I
V
O
T
op
Parameter
Value
2 to 6
0 to V
CC
0 to V
CC
-55 to +125
-40 to +85
0 to 1000
0 to 500
0 to 400
Unit
V
V
V
o
C
o
C
ns
Supply Voltage
Input Voltage
Output Voltage
Operating Temperature:
M54HC
Series
M74HC
Series
t
r
, t
f
Input Rise and Fall Time
V
CC
= 2 V
V
CC
= 4.5 V
V
CC
= 6 V
M54/M74HC148
3/11
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74HC148 | 8-3 Line Priority Encoder |
| 74HC155 | DUAL 2 TO 4 LINE DECODER 3 TO 8 LINE DECODER |
| 74HC155 | Dual 2-to-4-line Decoders/Demultiplexers |
| 74HC298 | Quad. 2-input Multiplexers (with storage) |
| 74HC4016J | Quad Analog Switch/ Multiplexer/Demultiplexer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74HC148B1 | 制造商:STMicroelectronics 功能描述: |
| 74HC14A | 制造商:Motorola Inc 功能描述: 制造商:ON Semiconductor 功能描述: |
| 74HC14AD | 制造商: 功能描述: 制造商:undefined 功能描述: |
| 74HC14AFN | 制造商:Motorola Inc 功能描述: |
| 74HC14AN | 制造商: 功能描述: 制造商:undefined 功能描述: |
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