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參數(shù)資料
| 型號： | 74AC138PC |
| 廠商： | Fairchild Semiconductor |
| 文件頁數(shù)： | 2/9頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DECODER/DEMUX 1OF8 16-DIP |
| 標(biāo)準(zhǔn)包裝： | 25 |
| 系列： | 74AC |
| 類型： | 解碼器/多路分解器 |
| 電路： | 1 x 3:8 |
| 獨立電路： | 1 |
| 輸出電流高，低： | 24mA，24mA |
| 電壓電源： | 單電源 |
| 電源電壓： | 2 V ~ 6 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 通孔 |
| 封裝/外殼： | 16-DIP（0.300"，7.62mm） |
| 供應(yīng)商設(shè)備封裝： | 16-DIP |
| 包裝： | 管件 |
| 其它名稱： | 74AC138 |
www.fairchildsemi.com
2
74AC138
74ACT138
Truth Table
H
= HIGH Voltage Level
L
= LOW Voltage Level
X
= Immaterial
Functional Description
The AC/ACT138 high-speed 1-of-8 decoder/demultiplexer
accepts three binary weighted inputs (A0, A1, A2) and,
when enabled, provides eight mutually exclusive active-
LOW outputs (O0–O7). The AC/ACT138 features three
Enable inputs, two active-LOW (E1, E2) and one active-
HIGH (E3). All outputs will be HIGH unless E1 and E2 are
LOW and E3 is HIGH. This multiple enable function allows
easy parallel expansion of the device to a 1-of-32 (5 lines
to 32 lines) decoder with just four AC/ACT138 devices and
one inverter (see Figure 1). The AC/ACT138 can be used
as an 8-output demultiplexer by using one of the active
LOW Enable inputs as the data input and the other Enable
inputs as strobes. The Enable inputs which are not used
must be permanently tied to their appropriate active-HIGH
or active-LOW state.
Logic Diagram
Please note that this diagram is provided only for the understanding of logic
operations and should not be used to estimate propagation delays.
FIGURE 1. Expansion to 1-of-32 Decoding
Inputs
Outputs
E1
E2
E3
A0
A1
A2
O0
O1
O2
O3
O4
O5
O6
O7
H
X
HHH
HH
X
H
X
HHH
HH
X
L
X
HHH
HH
LL
H
LLL
L
H
L
H
L
H
L
H
HHH
HH
L
H
L
H
L
HH
L
HHH
HH
L
HH
H
L
H
L
H
HH
H
L
H
L
H
HHH
H
L
H
L
H
L
H
HHH
HH
L
H
L
H
L
HH
HHH
L
H
L
H
HHH
H
L
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74AC138PC | 制造商:Fairchild Semiconductor Corporation 功能描述:IC DECODERS/ENCODERS/MULTIPLEXERS/DEMUL |
| 74AC138PC | 制造商:Fairchild Semiconductor Corporation 功能描述:IC 74AC CMOS 74AC138 DIP16 6V |
| 74AC138PCQR | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:3-To-8-Line Demultiplexer |
| 74AC138SC | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 1-of-8 Decoder/Demul 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 |
| 74AC138SC | 制造商:Fairchild Semiconductor Corporation 功能描述:IC DECODERS/ENCODERS/MULTIPLEXERS/DEMUL 制造商:Fairchild Semiconductor Corporation 功能描述:IC, 1-LINE TO 8-LINE DECODER, SOIC-16 |
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