參數(shù)資料
型號(hào)： SN74LV138ADGV
廠商： Texas Instruments, Inc.
英文描述： 3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
中文描述： 3線至8線解碼器/解復(fù)用器
文件頁(yè)數(shù)： 2/16頁(yè)
文件大?。?/td> 388K
代理商： SN74LV138ADGV
www.ti.com
DESCRIPTION/ORDERING INFORMATION (CONTINUED)
These devices are designed for high-performance memory-decoding or data-routing applications requiring very
short propagation delay times. In high-performance memory systems, these decoders can be used to minimize
the effects of system decoding. When employed with high-speed memories utilizing a fast enable circuit, the
delay times of these decoders and the enable time of the memory usually are less than the typical access time of
the memory. This means that the effective system delay introduced by the decoder is negligible.
SN54LV138A, SN74LV138A
3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
SCLS395L–APRIL 1998–REVISED AUGUST 2005
The conditions at the binary-select inputs (A, B, C) and the three enable inputs (G1, G2A, G2B) select one of
eight output lines. The two active-low (G2A, G2B) and one active-high (G1) enable inputs reduce the need for
external gates or inverters when expanding. A 24-line decoder can be implemented without external inverters
and a 32-line decoder requires only one inverter. An enable input can be used as a data input for demultiplexing
applications.
These devices are fully specified for partial-power-down applications using I
off
. The I
off
circuitry disables the
outputs, preventing damaging current backflow through the devices when they are powered down.
FUNCTION TABLE
ENABLE INPUTS
G1
G2A
X
H
X
X
L
X
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
SELECT INPUTS
C
B
X
X
X
X
X
X
L
L
L
L
L
H
L
H
H
L
H
L
H
H
H
H
OUTPUTS
Y3
H
H
H
H
H
H
L
H
H
H
H
G2B
X
H
X
L
L
L
L
L
L
L
L
A
X
X
X
L
H
L
H
L
H
L
H
Y0
H
H
H
L
H
H
H
H
H
H
H
Y1
H
H
H
H
L
H
H
H
H
H
H
Y20
H
H
H
H
H
L
H
H
H
H
H
Y4
H
H
H
H
H
H
H
L
H
H
H
Y5
H
H
H
H
H
H
H
H
L
H
H
Y6
H
H
H
H
H
H
H
H
H
L
H
Y7
H
H
H
H
H
H
H
H
H
H
L
2
相關(guān)PDF資料
PDF描述
SNJ54LV138AJ 3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
SN74LV138ANS 3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
SN54LV138AW Single Inverter, Schmitt Input; Package: TSOP-5 / SOT23-5; No of Pins: 5; Container: Tape and Reel; Qty per Container: 3000
SN54LV138A 3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SN74LV138ADGVR 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 3 to 8-Line Decdr/Demltplxer 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
SN74LV138ADGVRE4 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 3 to 8-Line Decdr/Demltplxer 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
SN74LV138ADGVRG4 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 3Ln To 8Ln Decoder Demultiplexers 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
SN74LV138ADR 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 Line Decoder 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
SN74LV138ADRE4 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 3 to 8-Line Decdr/Demltplxer 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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