数据搜索系统,热门电子元器件搜索 |
|
54LS256 数据表(PDF) 1 Page - National Semiconductor (TI) |
|
|
54LS256 数据表(HTML) 1 Page - National Semiconductor (TI) |
1 / 6 page TLF9823 June 1989 54LS256DM74LS256 Dual 4-Bit Addressable Latch General Description The ’LS256 is a dual 4-bit addressable latch with common control inputs these include two Address inputs (A0 A1) an active LOW enable input (E) and an active LOW Clear input (CL) Each latch has a Data input (D) and four outputs (Q0 – Q3) When the Enable (E) is HIGH and the Clear input (CL)is LOW all outputs (Q0 – Q3) are LOW Dual 4-channel demul- tiplexing occurs when the CL and E are both LOW When CL is HIGH and E is LOW the selected output (Q0 – Q3) determined by the Address inputs follows D When the E goes HIGH the contents of the latch are stored When op- erating in the addressable latch mode (E e LOW CL e HIGH) changing more than one bit of the Address (A0 A1) could impose a transient wrong address Therefore this should be done only while in the memory mode (E e CL e HIGH) Features Y Serial-to-parallel capability Y Output from each storage bit available Y Random (addressable) data entry Y Easily expandable Y Active low common clear Connection Diagram Dual-In-Line Package TLF9823 – 1 Order Number 54LS256DMQB 54LS256FMQB or DM74LS256N See NS Package Number J16A N16E or W16A Logic Symbol TLF9823 – 2 VCC e Pin 16 GND e Pin 8 Pin Names Description A0 A1 Common Address Inputs Da Db Data Inputs E Common Enable Input (Active LOW) CL Conditional Clear Input (Active LOW) Q0a–Q3a Side A Latch Outputs Q0b–Q3b Side B Latch Outputs C1995 National Semiconductor Corporation RRD-B30M115Printed in U S A |
类似零件编号 - 54LS256 |
|
类似说明 - 54LS256 |
|
|
链接网址 |
隐私政策 |
ALLDATASHEETCN.COM |
ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 链接交换 | 制造商名单 All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |