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參數(shù)資料
| 型號： | MM74HC251J |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 編、解碼器及復(fù)用、解復(fù)用 |
| 英文描述： | HC/UH SERIES, 8 LINE TO 1 LINE MULTIPLEXER, COMPLEMENTARY OUTPUT, CDIP16 |
| 封裝： | DIP-16 |
| 文件頁數(shù)： | 1/4頁 |
| 文件大小： | 119K |
| 代理商： | MM74HC251J |
TLF5328
MM54HC251MM74HC251
8-Channel
TRI-STATE
Multiplexer
January 1988
MM54HC251MM74HC251
8-Channel TRI-STATE
Multiplexer
General Description
This 8-channel digital multiplexer with TRI-STATE outputs
utilizes advanced silicon-gate CMOS technology Along with
the high noise immunity and low power consumption of
standard CMOS integrated circuits it possesses the ability
to drive 10 LS-TTL loads The large output drive capability
and TRI-STATE feature make this part ideally suited for in-
terfacing with bus lines in a bus oriented system
This multiplexer features both true (Y) and complement (W)
outputs as well as a STROBE input The STROBE must be
at a low logic level to enable this device When the STROBE
input is high both outputs are in the high impedance state
When enabled address information on the data select in-
puts determines which data input is routed to the Y and W
outputs The 54HC74HC logic family is speed function as
well as pinout compatible with the standard 54LS74LS log-
ic family All inputs are protected from damage due to static
discharge by internal diode clamps to VCC and ground
Features
Y
Typical propagation delay
Data select to Y 26 ns
Y
Wide supply range 2 – 6V
Y
Low power supply quiescent current 80 mA maximum
(74HC)
Y
TRI-STATE outputs for interface to bus oriented
systems
Connection and Logic Diagrams
Dual-in-Line Package
TLF5328 – 1
Top View
Order Number MM54HC251 or MM74HC251
Truth Table
Inputs
Outputs
Select
Strobe
Y
W
CBA
S
XXX
H
Z
L
D0
L
H
L
D1
L
H
L
D2
L
H
L
D3
H
L
D4
H
L
H
L
D5
H
L
D6
H
L
D7
H e high logic level L e logic level
X e irrelevant Z e high impedance (off)
D0 D1
D7 e the level of the respective D input
TLF5328 – 2
TRI-STATE
is a registered trademark of National Semiconductor Corp
C1995 National Semiconductor Corporation
RRD-B30M105Printed in U S A
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MM74HC251M | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 8-Chan 3-STATE Multi 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 |
| MM74HC251M | 制造商:Fairchild Semiconductor Corporation 功能描述:IC 74HC CMOS SMD 74HC251 SOIC16 |
| MM74HC251M_Q | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 8-Chan 3-STATE Multi 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 |
| MM74HC251MTC | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 8-Chan 3-STATE Multi 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 |
| MM74HC251MTC_Q | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 8-Chan 3-STATE Multi 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 |
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