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參數(shù)資料
| 型號： | MC14534BCP |
| 廠商： | MOTOROLA INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | 5 Cascaded BCD Counters |
| 中文描述： | 4000/14000/40000 SERIES, ASYN POSITIVE EDGE TRIGGERED 20-BIT UP DECADE COUNTER, PDIP24 |
| 封裝： | PLASTIC, DIP-24 |
| 文件頁數(shù)： | 1/9頁 |
| 文件大?。?/td> | 225K |
| 代理商： | MC14534BCP |
MOTOROLA CMOS LOGIC DATA
Motorola, Inc. 1995
1
MC14534B
The MC14534B is composed of five BCD ripple counters that have their
respective outputs multiplexed using an internal scanner. Outputs of each
counter are selected by the scanner and appear on four (BCD) pins.
Selection is indicated by a logic high on the appropriate digit select pin. Both
BCD and digit select outputs have three–state controls providing an
“open–circuit” when these controls are high and allowing multiplexing.
Cascading may be accomplished by using the carry–out pin. The counters
and scanner can be independently reset by applying a high to the counter
master reset (MR) and the scanner reset (SR). The MC14534B was
specifically designed for application in real time or event counters where
continual updating and multiplexed displays are used.
Four Operating Modes (See truth table)
Input Error Detection Circuit
Clock Conditioning Circuits for Slow Transition Inputs
Counter Sequences on Positive Transition of Clock A
Supply Voltage Range = 3.0 Vdc to 18 Vdc
Capable of Driving Two Low–power TTL Loads or One Low–power
Schottky TTL Load Over the Rated Temperature Range
BLOCK DIAGRAM
PULSE ERROR
DETECTOR
PULSE
SHAPER
TEST
CONTROL
OUTPUT
CONTROL
MUX
MUX
MUX
MUX
MUX
UNITS
CARRY
CONTROL
TENS
HUNDREDS
THOUSANDS
TEN
THOUSANDS
C
÷
10
C
÷
10
C
÷
10
C
÷
10
C
÷
10
Q0
Q3
Q0
Q3
Q0
Q3
Q0
Q3
Q0
Q3
Cn+4
Cn+4
Cn+4
Cn+4
Cn+4
22
7
8
14
16
11
1
23
4
2
5
6
9
10
CLOCK B
CLOCK A
MASTER
RESET
MODE A
MODE B
SCANNER
RESET
SCANNER
CLOCK
ERROR OUT
3
R
SCANNER
13
17
18
19
20
Q3
Q2
Q1
Q0
21
3–STATE BCD
CONTROL
CARRY OUT
3–STATE DIGIT
CONTROL
15
DS1
DS2
DS3
DS4
DS5
DIGIT SELECT
3–STATE
OUTPUT BUFFER
NOTE:
BCD
OUT
VDD = PIN 24
VSS = PIN 12
TO CAPACITORS
3–State Control
Out
Q or DS
High Impedance
0
1
=
SEMICONDUCTOR TECHNICAL DATA
REV 3
1/94
L SUFFIX
CERAMIC
CASE 623
ORDERING INFORMATION
MC14XXXBCP
MC14XXXBCL
MC14XXXBDW
TA = – 55
°
to 125
°
C for all packages.
Plastic
Ceramic
SOIC
P SUFFIX
PLASTIC
CASE 709
DW SUFFIX
SOIC
CASE 751E
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| MC14534BDW | 5 Cascaded BCD Counters |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC14536BBEBS | 制造商:Motorola Inc 功能描述: |
| MC14536BCP | 功能描述:計時器和支持產(chǎn)品 LOG CMOS OSILATR TIMER RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| MC14536BCPG | 功能描述:計時器和支持產(chǎn)品 3-18V 24 Flip-Flop RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| MC14536BDW | 功能描述:計時器和支持產(chǎn)品 LOG CMOS OSILATR TIMER RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| MC14536BDWG | 功能描述:計時器和支持產(chǎn)品 LOG CMOS OSILATR TIMER RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
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