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參數(shù)資料
| 型號(hào)： | SN74HC148DWR |
| 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)： | 1/17頁 |
| 文件大小： | 581K |
| 代理商： | SN74HC148DWR |
SCLS109G MARCH 1984 REVISED APRIL 2004
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Wide Operating Voltage Range of 2 V to 6 V
Outputs Can Drive Up To 10 LSTTL Loads
Low Power Consumption, 80-
μ
A Max I
CC
Typical t
pd
= 16 ns
±
4-mA Output Drive at 5 V
Low Input Current of 1
μ
A Max
Encode Eight Data Lines to 3-Line Binary
(Octal)
Applications Include:
n-Bit Encoding
Code Converters and Generators
description/ordering information
The ’HC148 devices feature priority decoding of
the inputs to ensure that only the highest-order
data line is encoded. These devices encode eight
data lines to 3-line (4-2-1) binary (octal).
Cascading circuitry (enable input EI and enable
output EO) has been provided to allow octal
expansion without the need for external circuitry.
Data inputs and outputs are active at the low logic
level.
ORDERING INFORMATION
TA
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP N
Tube of 25
SN74HC148N
SN74HC148N
Tube of 40
SN74HC148D
40
°
C to 85
°
C
SOIC D
Reel of 2500
SN74HC148DR
HC148
Reel of 250
SN74HC148DT
SOIC DW
Reel of 2000
SN74HC148DWR
HC148
SOP NS
Reel of 2000
SN74HC148NSR
HC148
CDIP J
Tube of 25
SNJ54HC148J
SNJ54HC148J
55 C to 125 C
CFP W
LCCC FK
Tube of 150
Tube of 55
SNJ54HC148W
SNJ54HC148FK
SNJ54HC148W
SNJ54HC148FK
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
3
2 1 20 19
9 10 11 12 13
4
5
6
7
8
18
17
16
15
14
GS
3
NC
2
1
6
7
NC
EI
A2
5
4
N
A
0
V
E
A
G
N
SN54HC148 . . . FK PACKAGE
(TOP VIEW)
NC No internal connection
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
4
5
6
7
EI
A2
A1
GND
V
CC
EO
GS
3
2
1
0
A0
SN54HC148 . . . J OR W PACKAGE
SN74HC148 . . . D, DW, N, OR NS PACKAGE
(TOP VIEW)
Copyright
2004, Texas Instruments Incorporated
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SN74HC148DWRE4 | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 8-Line To 3-Line Priority Encoders RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| SN74HC148DWRG4 | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 8Ln To 3Ln Priority Encoders RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| SN74HC148N | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 8-to-3 Line Priority RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| SN74HC148N | 制造商:Texas Instruments 功能描述:Decoder / Encoder / Multiplexer / Demult |
| SN74HC148NE4 | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 8-Line To 3-Line Priority Encoders RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
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