參數(shù)資料
型號: DM74ALS521WMX
廠商: FAIRCHILD SEMICONDUCTOR CORP
元件分類: 通用總線功能
英文描述: Identity Comparator
中文描述: ALS SERIES, 8-BIT IDENTITY COMPARATOR, INVERTED OUTPUT, PDSO20
封裝: 0.300 INCH, MS-013, SOIC-20
文件頁數(shù): 1/5頁
文件大?。?/td> 51K
代理商: DM74ALS521WMX
2000 Fairchild Semiconductor Corporation
DS006114
www.fairchildsemi.com
September 1986
Revised April 2000
D
DM74ALS520
DM74ALS521
8-Bit Comparator
General Description
These comparators perform an “equal to” comparison of
two 8-bit words with provision for expansion or external
enabling. The matching of the two 8-bit input plus a logic
LOW on the EN input produces the output A
=
B on the
DM74ALS520 and DM74ALS521. The DM74ALS520 and
DM74ALS521 have totem pole outputs for wire AND cas-
cading. Additionally, the DM74ALS520 is provided with B
input pull up termination resistors for analog or switch data.
Features
I
Switching specifications at 50 pF
I
Switching specifications guaranteed over full tempera-
ture and V
CC
range
I
Advanced oxide-isolated, ion-implanted Schottky TTL
process
I
Functionally and pin for pin compatible with LS family
counterpart
I
Improved output transient handling capability
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter
X
to the ordering code.
Connection Diagram
Function Table
H
=
HIGH Logic Level
L
=
LOW Logic Level
X
=
Don't Care
Ordering Code
DM74ALS520WM
DM74ALS520N
DM74ALS521WM
SM74ALS521N
Package Number
M20B
N20A
M20B
N20A
Package Description
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
Inputs
Output
EN
L
L
H
Data
A
=
B
A
B
X
A
=
B
L
H
H
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DM74ALS5245SJ_Q 功能描述:總線收發(fā)器 Octal 3-STATE Trans RoHS:否 制造商:Fairchild Semiconductor 邏輯類型:CMOS 邏輯系列:74VCX 每芯片的通道數(shù)量:16 輸入電平:CMOS 輸出電平:CMOS 輸出類型:3-State 高電平輸出電流:- 24 mA 低電平輸出電流:24 mA 傳播延遲時(shí)間:6.2 ns 電源電壓-最大:2.7 V, 3.6 V 電源電壓-最小:1.65 V, 2.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-48 封裝:Reel
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