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參數(shù)資料
| 型號(hào)： | 74F191FCQB |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 通用總線功能 |
| 英文描述： | Up/Down Binary Counter with Preset and Ripple Clock |
| 中文描述： | 向上/向下二進(jìn)制計(jì)數(shù)器的預(yù)置和波紋時(shí)鐘 |
| 文件頁(yè)數(shù)： | 1/10頁(yè) |
| 文件大小： | 187K |
| 代理商： | 74F191FCQB |
TL/F/9495
5
November 1994
54F/74F191
Up/Down Binary Counter with Preset and Ripple Clock
General Description
The ’F191 is a reversible modulo-16 binary counter featur-
ing synchronous counting and asynchronous presetting.
The preset feature allows the ’F191 to be used in program-
mable dividers. The Count Enable input, the Terminal Count
output and Ripple Clock output make possible a variety of
methods of implementing multistage counters. In the count-
ing modes, state changes are initiated by the rising edge of
the clock.
Features
Y
High-SpeedD125 MHz typical count frequency
Y
Synchronous counting
Y
Asynchronous parallel load
Y
Cascadable
Commercial
Military
Package
Number
Package Description
74F191PC
N16E
16-Lead (0.300
×
Wide) Molded Dual-In-Line
54F191DM (Note 2)
J16A
16-Lead Ceramic Dual-In-Line
74F191SC (Note 1)
M16A
16-Lead (0.150
×
Wide) Molded Small Outline, JEDEC
16-Lead (0.300
×
Wide) Molded Small Outline, EIAJ
74F191SJ (Note 1)
M16D
54F191FM (Note 2)
W16A
16-Lead Cerpack
54F191LM (Note 2)
E20A
20-Lead Ceramic Leadless Chip Carrier, Type C
Note 1:
Devices also available in 13
×
reel. Use suffix
e
SCX and SJX.
Note 2:
Military grade device with environmental and burn-in processing. Use suffix
e
DMQB, FMQB and LMQB.
Logic Symbols
TL/F/9495–1
IEEE/IEC
TL/F/9495–4
Connection Diagrams
Pin Assignment for
DIP, SOIC and Flatpak
TL/F/9495–2
Pin Assignment
for LCC
TL/F/9495–3
TRI-STATE
é
is a registered trademark of National Semiconductor Corporation.
C
1995 National Semiconductor Corporation
RRD-B30M75/Printed in U. S. A.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74F191FCX | Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191FMQB | Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191FMX | Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191LCQB | Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191LCX | Up/Down Binary Counter with Preset and Ripple Clock |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74F191FCX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191FMQB | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191FMX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191LCQB | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191LCX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Up/Down Binary Counter with Preset and Ripple Clock |
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