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參數(shù)資料
| 型號： | 74F525SCX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | Programmable Counter |
| 中文描述： | F/FAST SERIES, ASYN POSITIVE EDGE TRIGGERED DOWN DIVIDE BY N COUNTER, PDSO28 |
| 封裝： | 0.300 INCH, PLASTIC, SOIC-28 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大小： | 184K |
| 代理商： | 74F525SCX |
TL/F/9547
7
August 1995
74F525
Programmable Counter
General Description
The ’F525 is a multi-function 28-pin device. It consists of a
16-bit count-down counter, logic to control the counter, logic
to control the state of the outputs and a PLA to decode the
particular function selected by the user. The list of high-
speed timing applications include:
Features
Y
Baud rate generator
Y
Digitally programmed monostable
Y
Variable system frequency generator
Y
Digital filter variable sampling rate
Y
16-bit data path
Y
External trigger
Y
Extremely accurate one shot w/pulse widths from
50 ns to 3.27 ms
@
CP
e
40 MHz
Commercial
Package
Number
Package Description
74F525QC (Note 1)
V28A
28-Lead Molded Plastic Leaded Chip Carrier
74F525SC (Note 1)
M28B
28-Lead (0.300
×
Wide) Molded Small Outline, JEDEC
28-Lead (0.600
×
Wide) Molded Dual-In-Line Package
74F525PC
N28B
Note 1:
Devices also available in 13
×
reel. Use suffix
e
SCX and QCX.
Connection Diagrams
Pin Assignment
DIP and SOIC
TL/F/9547–2
Pin Assignment
for PCC
TL/F/9547–3
TRI-STATE
é
is a registered trademark of National Semiconductor Corporation.
C
1995 National Semiconductor Corporation
RRD-B30M105/Printed in U. S. A.
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