參數(shù)資料
型號(hào): 74LCX138SJX
廠商: Fairchild Semiconductor
文件頁數(shù): 5/12頁
文件大?。?/td> 0K
描述: DECODER/DEMUX 1-OF-8 LV 16SOP
標(biāo)準(zhǔn)包裝: 2,000
系列: 74LCX
類型: 解碼器/多路分解器
電路: 1 x 3:8
獨(dú)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 ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 16-SOIC(0.209",5.30mm 寬)
供應(yīng)商設(shè)備封裝: 16-SOP
包裝: 帶卷 (TR)
www.fairchildsemi.com
2
74LCX138
Connection Diagrams
Pin Assignments for SOIC, SOP, and TSSOP
Pad Assignments for DQFN
(Top Through View)
Pin Descriptions
Functional Description
The LCX138 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 LCX138 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. The LCX138 can be used as an 8-output demulti-
plexer 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.
Truth Table
H
= HIGH Voltage Level
L
= LOW Voltage Level
X
= Immaterial
Pin Names
Description
A0–A2
Address Inputs
E1–E2
Enable Inputs
E3
Enable Input
O0–O7
Outputs
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
(Bottom View)
DAP
No Connect
Note: DAP (Die Attach Pad)
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