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參數(shù)資料
| 型號(hào)： | DM5490AJ |
| 元件分類： | 通用總線功能 |
| 英文描述： | Asynchronous Up Counter |
| 中文描述： | 異步設(shè)立攤位 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大小： | 133K |
| 代理商： | DM5490AJ |
TL/F/6533
D
D
July 1992
DM5490/DM7490A, DM7493A
Decade and Binary Counters
General Description
Each of these monolithic counters contains four master-
slave flip-flops and additional gating to provide a divide-by-
two counter and a three-stage binary counter for which the
count cycle length is divide-by-five for the 90A and divide-
by-eight for the 93A.
All of these counters have a gated zero reset and the 90A
also has gated set-to-nine inputs for use in BCD nine’s com-
plement applications.
To use their maximum count length (decade or four-bit bina-
ry), the B input is connected to the Q
A
output. The input
count pulses are applied to input A and the outputs are as
described in the appropriate truth table. A symmetrical di-
vide-by-ten count can be obtained from the 90A counters by
connecting the Q
D
output to the A input and applying the
input count to the B input which gives a divide-by-ten square
wave at output Q
A
.
Features
Y
Typical power dissipation
D 90A
145 mW
D 93A
130 mW
Y
Count frequency 42 MHz
Connection Diagrams
Dual-In-Line Package
TL/F/6533–1
Order Number DM5490J, DM5490W or DM7490AN
See NS Package Number J14A, N14A or W14B
Dual-In-Line Package
TL/F/6533–2
Order Number DM7493AN
See NS Package Number N14A
C
1995 National Semiconductor Corporation
RRD-B30M105/Printed in U. S. A.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DM5490AW | Asynchronous Up Counter |
| DM5493AJ | Asynchronous Up Counter |
| DM5495 | |
| DM5492AJ | Asynchronous Up Counter |
| DM7492AN | Asynchronous Up Counter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DM5490AJ/883 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Asynchronous Up Counter |
| DM5490AN | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Decade, and Binary Counters |
| DM5490AW | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Asynchronous Up Counter |
| DM5490AW/883 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| DM5490J | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Decade and Binary Counters |
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