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零件编号 | 54ACT138 | ||
描述 | 1-of-8 Decoder/Demultiplexer | ||
制造商 | National Semiconductor | ||
LOGO | |||
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www.DataSheet4U.com
August 1998
54AC138 • 54ACT138
1-of-8 Decoder/Demultiplexer
General Description
The ’AC/’ACT138 is a high-speed 1-of-8 decoder/
demultiplexer. This device is ideally suited for high-speed bi-
polar memory chip select address decoding. The multiple in-
put enables allow parallel expansion to a 1-of-24 decoder
using just three ’AC/’ACT138 devices or a 1-of-32 decoder
using four ’AC/’ACT138 devices and one inverter.
Features
n ICC reduced by 50%
n Demultiplexing capability
n Multiple input enable for easy expansion
n Active LOW mutually exclusive outputs
n Outputs source/sink 24 mA
n ’ACT138 has TTL-compatible inputs
n Standard Microcircuit Drawing (SMD)
— ’AC138: 5962-87622
— ’ACT138: 5962-87554
Logic Symbols
Connection Diagrams
Pin Assignment
for DIP and Flatpak
IEEE/IEC
DS100268-1
Pin Names
A0– A2
E1– E2
E3
O0– O7
Description
Address Inputs
Enable Inputs
Enable Input
Outputs
DS100268-7
DS100268-2
Pin Assignment
for LCC
DS100268-3
FACT® is a registered trademark of Fairchild Semiconductor Corporation.
© 1998 National Semiconductor Corporation DS100268
www.national.com
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页数 | 10 页 | ||
下载 | [ 54ACT138.PDF 数据手册 ] |
零件编号 | 描述 | 制造商 |
54ACT138 | 1-of-8 Decoder/Demultiplexer | National Semiconductor |
54ACT139 | Dual 1-of-4 Decoder/Demultiplexer | National Semiconductor |
54ACT139 | Dual 1-of-4 Decoder/Demultiplexer | Texas Instruments |
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