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參數(shù)資料
| 型號： | 74AC191 |
| 廠商： | Fairchild Semiconductor Corporation |
| 元件分類： | 通用總線功能 |
| 英文描述： | Up/Down Counter with Preset and Ripple Clock |
| 中文描述： | 加/減計數(shù)器的預(yù)置和波紋時鐘 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大?。?/td> | 115K |
| 代理商： | 74AC191 |
1999 Fairchild Semiconductor Corporation
DS009940
www.fairchildsemi.com
November 1988
Revised November 1999
7
74AC191
Up/Down Counter with Preset and Ripple Clock
General Description
The AC191 is a reversible modulo 16 binary counter. It fea-
tures synchronous counting and asynchronous presetting.
The preset feature allows the AC191 to be used in pro-
grammable dividers. The Count Enable input, the Terminal
Count output and the Ripple Clock output make possible a
variety of methods of implementing multistage counters. In
the counting modes, state changes are initiated by the ris-
ing edge of the clock.
Features
I
I
CC
reduced by 50%
I
High speed—133 MHz typical count frequency
I
Synchronous counting
I
Asynchronous parallel load
I
Cascadable
I
Outputs source/sink 24 mA
Ordering Code:
Device also available in Tape and Reel. Specify by appending suffix letter
“
X
”
to the ordering code.
Logic Symbols
IEEE/IEC
Connection Diagram
Pin Descriptions
FACT
is a trademark of Fairchild Semiconductor Corporation.
Order Number
74AC191SC
74AC191SJ
74AC191MTC
74AC191PC
Package Number
M16A
M16D
MTC16
N16E
Package Description
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150
”
Narrow Body
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300
”
Wide
Pin Names
Description
CE
CP
P
0
–
P
3
PL
Count Enable Input
Clock Pulse Input
Parallel Data Inputs
Asynchronous Parallel Load Input
U /D
Q
0
–
Q
3
RC
TC
Up/Down Count Control Input
Flip-Flop Outputs
Ripple Clock Output
Terminal Count Output
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 74AC191MTC | Up/Down Counter with Preset and Ripple Clock |
| 74AC191SC | RB Series - Econoline Unregulated DC-DC Converters; Input Voltage (Vdc): 12V; Output Voltage (Vdc): 24V; Power: 1W; Low Cost 1W Converter; Power Sharing on Dual Output Version; Industry Standard Pinout; 1kVDC & 2kVDC Isolation Options; Optional Continuous Short Circuit Protected; UL94V-0 Package Material; Efficiency to 85% |
| 74AC191SJ | Up/Down Counter with Preset and Ripple Clock |
| 74AC191MTCX | Microprocessor-Compatible, 14-Bit DACs |
| 74AC191SCX | Microprocessor-Compatible, 14-Bit DACs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 74AC191_ZBA3116B WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| 74AC191MTC | 功能描述:計數(shù)器移位寄存器 Up/Down Counter 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 |
| 74AC191MTCX | 功能描述:計數(shù)器移位寄存器 Up/Down Counter 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 |
| 74AC191PC | 功能描述:計數(shù)器移位寄存器 Up/Down Counter 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 |
| 74AC191PC | 制造商:Fairchild Semiconductor Corporation 功能描述:BINARY COUNTER LOGIC IC |
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