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DM54LS240E PDF预览

DM54LS240E

更新时间: 2024-01-22 03:39:15
品牌 Logo 应用领域
美国国家半导体 - NSC 驱动器逻辑集成电路
页数 文件大小 规格书
6页 145K
描述
Octal TRI-STATE Buffers/Line Drivers/Line Receivers

DM54LS240E 技术参数

生命周期:Contact Manufacturer包装说明:DFP,
Reach Compliance Code:unknownHTS代码:8542.39.00.01
风险等级:5.67系列:LS
JESD-30 代码:R-GDFP-F20逻辑集成电路类型:BUS DRIVER
位数:4功能数量:2
端口数量:2端子数量:20
最高工作温度:125 °C最低工作温度:-55 °C
输出特性:3-STATE输出极性:INVERTED
封装主体材料:CERAMIC, GLASS-SEALED封装代码:DFP
封装形状:RECTANGULAR封装形式:FLATPACK
传播延迟(tpd):18 ns座面最大高度:2.286 mm
最大供电电压 (Vsup):5.5 V最小供电电压 (Vsup):4.5 V
标称供电电压 (Vsup):5 V表面贴装:YES
技术:TTL温度等级:MILITARY
端子形式:FLAT端子节距:1.27 mm
端子位置:DUAL宽度:6.731 mm
Base Number Matches:1

DM54LS240E 数据手册

 浏览型号DM54LS240E的Datasheet PDF文件第2页浏览型号DM54LS240E的Datasheet PDF文件第3页浏览型号DM54LS240E的Datasheet PDF文件第4页浏览型号DM54LS240E的Datasheet PDF文件第5页浏览型号DM54LS240E的Datasheet PDF文件第6页 
April 1992  
DM54LS240/DM74LS240,  
DM54LS241/DM74LS241  
Octal TRI-STATE Buffers/Line Drivers/Line Receivers  
Y
É
Typical I (sink current)  
OL  
General Description  
54LS  
74LS  
12 mA  
24 mA  
These buffers/line drivers are designed to improve both the  
performance and PC board density of TRI-STATE buffers/  
drivers employed as memory-address drivers, clock drivers,  
and bus-oriented transmitters/receivers. Featuring 400 mV  
of hysteresis at each low current PNP data line input, they  
provide improved noise rejection and high fanout outputs  
and can be used to drive terminated lines down to 133X.  
Y
Y
Typical I  
54LS  
74LS  
(source current)  
OH  
b
b
12 mA  
15 mA  
Typical propagation delay times  
Inverting 10.5 ns  
Noninverting 12 ns  
Y
Y
Typical enable/disable time 18 ns  
Typical power dissipation (enabled)  
Features  
Y
TRI-STATE outputs drive bus lines directly  
Inverting 130 mW  
Noninverting 135 mW  
Y
PNP inputs reduce DC loading on bus lines  
Y
Hysteresis at data inputs improves noise margins  
Connection Diagrams  
Dual-In-Line Package  
Dual-In-Line Package  
TL/F/6411–1  
TL/F/6411–2  
Order Number DM54LS240J,  
DM54LS240W, DM54LS240E,  
DM74LS240WM or DM74LS240N  
See NS Package Number E20A, J20A,  
M20B, N20A or W20A  
Order Number DM54LS241J,  
DM54LS241W, DM54LS241E,  
DM74LS241WM or DM74LS241N  
See NS Package Number E20A, J20A,  
M20B, N20A or W20A  
Function Tables  
LS240  
LS241  
G
Inputs  
Output  
Y
Inputs  
1A  
Outputs  
G
A
G
2A  
1Y  
2Y  
L
L
L
H
X
H
L
X
X
X
H
H
L
L
L
L
H
X
X
X
X
X
X
X
L
L
H
Z
H
Z
H
X
X
X
L
H
Z
H
X
e
e
e
e
L
Low Logic Level  
High Logic Level  
H
X
Z
Either Low or High Logic Level  
High Impedance  
TRI-STATEÉ is a registered trademark of National Semiconductor Corporation.  
C
1995 National Semiconductor Corporation  
TL/F/6411  
RRD-B30M105/Printed in U. S. A.  

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