參數(shù)資料
型號(hào)： SN74LS148DE4
廠商： TEXAS INSTRUMENTS INC
元件分類(lèi)： 算術(shù)邏輯單元
英文描述： LS SERIES, 8-BIT ENCODER, INVERTED OUTPUT, PDSO16
封裝： GREEN, PLASTIC, MS-012AC, SOIC-16
文件頁(yè)數(shù)： 12/26頁(yè)
文件大?。?/td> 831K
代理商： SN74LS148DE4
SN54147, SN54148, SN54LS147, SN54LS148
SN74147, SN74148 (TIM9907), SN74LS147, SN74LS148
10LINE TO 4LINE AND 8LINE TO 3LINE PRIORITY ENCODERS
SDLS053B OCTOBER 1976 REVISED MAY 2004
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description/ordering information
These TTL encoders feature priority decoding of the inputs to ensure that only the highest-order data line is
encoded. The ’147 and ’LS147 devices encode nine data lines to four-line (8-4-2-1) BCD. The implied decimal
zero condition requires no input condition, as zero is encoded when all nine data lines are at a high logic level.
The ’148 and ’LS148 devices encode eight data lines to three-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. For all types, data inputs and outputs are active at the low logic level. All inputs are buffered to represent
one normalized Series 54/74 or 54/74LS load, respectively.
ORDERING INFORMATION
TA
PACKAGE
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP N
Tube
SN74LS148N
0
°C to 70°C
SOIC D
Tube
SN74LS148D
LS148
0
°C to 70°C
SOIC D
Tape and reel
SN74LS148DR
LS148
SOP NS
Tape and reel
SN74LS148NSR
74LS148
CDIP J
Tube
SNJ54LS148J
55
°C to 125°C
CFP W
Tube
SNJ54LS148W
55 C to 125 C
LCCC FK
Tube
SNJ54LS148FK
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
FUNCTION TABLE ’147, ’LS147
INPUTS
OUTPUTS
1
2
3
4
5
6
7
8
9
D
C
B
A
H
X
XX
X
L
HH
L
X
XX
L
H
L
HH
H
X
XX
X
L
H
LL
L
X
XX
L
H
LL
H
X
L
HH
H
LH
L
X
L
H
HH
H
LH
H
X
L
HH
H
HL
L
X
L
H
HH
H
HLH
L
H
L
H = high logic level, L = low logic level, X = irrelevant
相關(guān)PDF資料
PDF描述
SN74LS148NE4 LS SERIES, 8-BIT ENCODER, INVERTED OUTPUT, PDIP16
SN74LS14DR LS SERIES, HEX 1-INPUT INVERT GATE, PDSO14
SN74LS155ADR LS SERIES, OTHER DECODER/DRIVER, TRUE OUTPUT, PDSO16
SN74LS155ADRG4 LS SERIES, OTHER DECODER/DRIVER, TRUE OUTPUT, PDSO16
SN54155J TTL/H/L SERIES, OTHER DECODER/DRIVER, TRUE OUTPUT, CDIP16
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SN74LS148DG4 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 8 Ln to 3 Ln Priority Encoder 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
SN74LS148DR 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 8 to 3 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
SN74LS148DR2 制造商:ON Semiconductor 功能描述:Encoder 8-to-3 Priority Bipolar 16-Pin SOIC T/R
SN74LS148DRE4 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 encoder 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
SN74LS148DRG4 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 8 Ln to 3 Ln Priority Encoder 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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