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參數(shù)資料
| 型號： | 74F191PMQB |
| 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/向下二進制計數(shù)器的預置和波紋時鐘 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大?。?/td> | 187K |
| 代理商： | 74F191PMQB |
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.
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PDF描述 |
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| 74F191PMX | Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191SCQB | Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191SJCQB | Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191SJCX | Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191SJMQB | Up/Down Binary Counter with Preset and Ripple Clock |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 74F191PMX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191SC | 功能描述:計數(shù)器移位寄存器 Up/Down Binary Ctr RoHS:否 制造商:Texas Instruments 計數(shù)器類型: 計數(shù)順序:Serial to Serial/Parallel 電路數(shù)量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數(shù)量:1 輸出類型:Open Drain 傳播延遲時間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
| 74F191SCQB | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Up/Down Binary Counter with Preset and Ripple Clock |
| 74F191SCX | 功能描述:計數(shù)器移位寄存器 Up/Down Binary Ctr RoHS:否 制造商:Texas Instruments 計數(shù)器類型: 計數(shù)順序:Serial to Serial/Parallel 電路數(shù)量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數(shù)量:1 輸出類型:Open Drain 傳播延遲時間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
| 74F191SJ | 功能描述:計數(shù)器移位寄存器 Up/Down Binary Ctr RoHS:否 制造商:Texas Instruments 計數(shù)器類型: 計數(shù)順序:Serial to Serial/Parallel 電路數(shù)量:1 封裝 / 箱體:SOIC-20 Wide 邏輯系列: 邏輯類型: 輸入線路數(shù)量:1 輸出類型:Open Drain 傳播延遲時間:650 ns 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝:Reel |
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