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DM74LS259WM中文资料仙童半导体数据手册PDF规格书
DM74LS259WM规格书详情
General Description
These 8-bit addressable latches are designed for general purpose storage applications in digital systems. Specific uses include working registers, serial-holding registers, and active-high decoders or demultiplexers. They are multifunctional devices capable of storing single-line data in eight addressable latches, and being a 1-of-8 decoder or demultiplexer with active-high outputs.
Four distinct modes of operation are selectable by controlling the clear and enable inputs as enumerated in the function table. In the addressable-latch mode, data at the data in terminal is written into the addressed latch. The addressed latch will follow the data input with all unaddressed latches remaining in their previous states. In the memory mode, all latches remain in their previous states and are unaffected by the data or address inputs. To eliminate the possibility of entering erroneous data in the latches, the enable should be held HIGH (inactive) while the address lines are changing. In the 1-of-8 decoding or demultiplexing mode, the addressed output will follow the level of the D input with all other outputs LOW. In the clear mode, all outputs are LOW and unaffected by the address and data inputs.
Features
■ 8-Bit parallel-out storage register performs serial-to-parallel
conversion with storage
■ Asynchronous parallel clear
■ Active high decoder
■ Enable/disable input simplifies expansion
■ Direct replacement for Fairchild DM9334
■ Expandable for N-bit applications
■ Four distinct functional modes
■ Typical propagation delay times:
Enable-to-output 18 ns
Data-to-output 16 ns
Address-to-output 21 ns
Clear-to-output 17 ns
■ Fan-out
IOL (sink current) 8 mA
IOH (source current) −0.4 mA
■ Typical ICC 22 mA
产品属性
- 型号:
DM74LS259WM
- 功能描述:
闭锁 8-Bit Serial 闭锁
- RoHS:
否
- 制造商:
Micrel
- 电路数量:
1
- 逻辑类型:
CMOS
- 逻辑系列:
TTL
- 极性:
Non-Inverting
- 输出线路数量:
9
- 电源电压-最大:
12 V
- 电源电压-最小:
5 V
- 最大工作温度:
+ 85 C
- 最小工作温度:
- 40 C
- 封装/箱体:
SOIC-16
- 封装:
Reel
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
TI(德州仪器) |
2024+ |
- |
500000 |
诚信服务,绝对原装原盘 |
询价 | ||
FSC |
95+ |
SOP |
377 |
一级代理,专注军工、汽车、医疗、工业、新能源、电力 |
询价 | ||
NS |
23+ |
SOP-16 |
9980 |
价格优势/原装现货/客户至上/欢迎广大客户来电查询 |
询价 | ||
NATIONALSEMI |
06+ |
原厂原装 |
7141 |
只做全新原装真实现货供应 |
询价 | ||
NS |
24+ |
SOP-16 |
3600 |
绝对原装!现货热卖! |
询价 | ||
FSC |
24+ |
6430 |
原装现货/欢迎来电咨询 |
询价 | |||
FSC |
24+ |
DIP |
7500 |
只做原装正品现货 欢迎来电查询15919825718 |
询价 | ||
FAIRCHILD |
23+ |
NA |
19960 |
只做进口原装,终端工厂免费送样 |
询价 | ||
NSC |
23+ |
原装原封 |
8888 |
专做原装正品,假一罚百! |
询价 | ||
onsemi(安森美) |
24+ |
SOP16 |
907 |
只做原装,提供一站式配单服务,代工代料。BOM配单 |
询价 |