Electronic component search and free download site.
Transistors,MosFET ,Diode,Integrated circuits
首页 >>> Fairchild >>> DM74LS390 数据手册

DM74LS390 数据手册 ( 数据表 )

零件编号产品描述 (功能)生产厂家
DM74LS390 Dual 4-Bit Decade Counter Fairchild
Fairchild Semiconductor Fairchild
Other PDF  not available.
PDF DOWNLOAD     
DM74LS390 image

General Description
Each of these monolithic circuits contains eight master-slave flip-flops and additional gating to implement two individual four-bit counters in a single package. The DM74LS390 incorporates dual divide-by-two and divideby-five counters, which can be used to implement cycle lengths equal to any whole and/or cumulative multiples of 2 and/or 5 up to divide-by-100. When connected as a bi-quinary counter, the separate divide-by-two circuit can be used to provide symmetry (a square wave) at the final output stage. The DM74LS390 has parallel outputs from each counter stage so that any submultiple of the input count frequency is available for system-timing signals.

Features
■ Dual version of the popular DM74LS90
■ DM74LS390...individual clocks for A and B flip-flops provide dual ÷ 2 and ÷ 5 counters
■ Direct clear for each 4-bit counter
■ Dual 4-bit version can significantly improve system densities by reducing counter package count by 50%
■ Typical maximum count frequency...35 MHz
■ Buffered outputs reduce possibility of collector commutation

 

与其他制造商的搜索 'DM74LS390'

零件编号产品描述 (功能)PDF生产厂家
M54HC4520F1R HC4520 DUAL 4 BIT BINARY COUNTER HC4518 DUAL DECADE COUNTER 视图 STMicroelectronics
HD74HC160 Synchronous Decade Counter (Direct Clear)/Synchronous 4-bit Binary Counter (Direct Clear)/Synchronous Decade Counter (Synchronous Clear)/Synchronous 4-bit Binary Counter (Synchronous Clear) 视图 Renesas Electronics
HD74HC160 Synchronous Decade Counter (Direct Clear)/Synchronous 4-bit Binary Counter (Direct Clear)/Synchronous Decade Counter (Synchronous Clear)/Synchronous 4-bit Binary Counter (Synchronous Clear) 视图 Hitachi -> Renesas Electronics
7490 DECADE COUNTER; DIVIDE-BY-TWELVE COUNTER; 4-BIT BINARY COUNTER 视图 ON Semiconductor
M54HC1520B1R HC4520 DUAL 4 BIT BINARY COUNTER HC4518 DUAL DECADE COUNTER 视图 STMicroelectronics
SN54LSXXXJ DUAL DECADE COUNTER; DUAL 4-STAGE BINARY COUNTER 视图 Motorola => Freescale
SN74LS393ML1 DUAL DECADE COUNTER; DUAL 4-STAGE BINARY COUNTER 视图 ON Semiconductor
74LS90 DECADE COUNTER / DIVIDE-BY-TWELVE COUNTER / 4-BIT BINARY COUNTER 视图 Motorola => Freescale
SN54-74LS90 DECADE COUNTER; DIVIDE-BY-TWELVE COUNTER; 4-BIT BINARY COUNTER 视图 ON Semiconductor
SN54LS290 DECADE COUNTER; 4-BIT BINARY COUNTER 视图 ON Semiconductor

Share Link : 
All Rights Reserved© datasheetq.com 2015 - 2020  ] [ Privacy Policy ] [ Request Datasheet  ] [ Contact Us ]