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參數(shù)資料
| 型號： | SN54HC191FK |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 計數(shù)器 |
| 英文描述： | HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, CQCC20 |
| 封裝： | CERAMIC, CC-20 |
| 文件頁數(shù)： | 4/13頁 |
| 文件大?。?/td> | 203K |
| 代理商： | SN54HC191FK |
D/U\) inputs that modifies the operating mode have no effect on the contents of the counter
until clocking occurs. The function of the counter is dictated solely by the condition meeting
the stable setup and hold times.
These counters are fully programmable; that is, each of the outputs can be preset to either
level by placing a low on the load (LOAD\) input and entering the desired data at the data
inputs. The output changes to agree with the data inputs independently of the level of CLK.
This feature allows the counters to be used as modulo-N dividers by simply modifying the
count length with the preset inputs.
Two outputs are available to perform the cascading function: ripple clock (RCO\) and
maximum/minimum (MAX/MIN) count. MAX/MIN produces a high-level output pulse with a
duration approximately equal to one complete cycle of the clock while the count is zero (all
outputs low) counting down, or maximum (9 or 15) counting up. RCO\ produces a low-level
output pulse under those same conditions, but only while CLK is low. The counters can be
easily cascaded by feeding RCO\ to CTEN\ of the succeeding counter if parallel clocking is
used, or to CLK if parallel enabling is used. MAX/MIN can be used to accomplish look ahead for
high-speed operation.
The SN54HC191 is characterized for operation over the full military temperature range of -55°
C to 125°C. The SN74HC191 is characterized for operation from -40°C to 85°C.
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Full datasheet in Acrobat PDF: scls121b.pdf (156 KB) (Updated: 05/01/1997)
Full datasheet in Zipped PostScript: scls121b.psz (146 KB)
View Application Reports for Digital Logic
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CMOS Power Consumption and CPD Calculation (SCAA035B - Updated: 06/01/1997)
l Designing With Logic (SDYA009C -
Updated: 06/01/1997)
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HCMOS Design Considerations (SCLA007 - Updated: 04/01/1996)
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Implications of Slow or Floating CMOS Inputs (SCBA004C - Updated: 02/01/1998)
l Input and Output Characteristics of Digital Integrated Circuits (SDYA010 -
Updated:
10/01/1996
)
l Live Insertion (SDYA012 -
Updated: 10/01/1996)
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SN54/74HCT CMOS Logic Family Applications And Restrictions (SCLA011 - Updated:
05/01/1996)
l Using High Speed CMOS and Advanced CMOS In Systems With Multiple Vcc (SCLA008 -
Updated: 04/01/1996)
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Documentation Rules (SAP) And Ordering Information (SZZU001B, 4 KB - Updated:
05/06/1999
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Logic Selection Guide Second Half 2000 (SDYU001N, 5035 KB - Updated: 04/17/2000)
TECHNICAL DOCUMENTS
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相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SN54HC191W | HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, CDFP16 |
| SN54HC191J | HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, CDIP16 |
| SN54HC193FK | HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, CQCC20 |
| SN54HC193J | HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, CDIP16 |
| SN74HC193NSR | HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT BIDIRECTIONAL BINARY COUNTER, PDSO16 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SN54HC191J | 制造商:Texas Instruments 功能描述:Counter Single 4-Bit Async Binary UP/Down 16-Pin CDIP Tube 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述:COUNTER SGL 4BIT ASYNC BINARY UP/DOWN 16CDIP - Rail/Tube |
| SN54HC193J | 制造商:Texas Instruments 功能描述:Counter Single 4-Bit Binary UP/Down 16-Pin CDIP Tube 制造商:Texas Instruments 功能描述:COUNTER SGL 4BIT BINARY UP/DOWN 16CDIP - Rail/Tube |
| SN54HC193W | 制造商:Texas Instruments 功能描述: |
| SN54HC194J | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| SN54HC195J | 制造商:Texas Instruments 功能描述:Shift Register Single 4-Bit Serial/Parallel to Parallel 16-Pin CDIP Tube 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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