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MC14458

更新时间： 2024-02-05 08:59:09
品牌 Logo 应用领域
摩托罗拉 - MOTOROLA 编码器
页数 文件大小 规格书
20页 237K
描述
Encoder and Decoder Pairs

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中文翻译

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MC14458 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
包装说明：DIP, DIP24,.6Reach Compliance Code：unknown
风险等级：5.92JESD-30 代码：R-PDIP-T24
JESD-609代码：e0端子数量：24
最高工作温度：125 °C最低工作温度：-55 °C
封装主体材料：PLASTIC/EPOXY封装代码：DIP
封装等效代码：DIP24,.6封装形状：RECTANGULAR
封装形式：IN-LINE认证状态：Not Qualified
子类别：Other Telecom ICs表面贴装：NO
技术：CMOS电信集成电路类型：TELECOMM CIRCUIT
温度等级：MILITARY端子面层：Tin/Lead (Sn/Pb)
端子形式：THROUGH-HOLE端子节距：2.54 mm
端子位置：DUALBase Number Matches：1

MC14458 数据手册

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Order this document  
by MC145026/D  
SEMICONDUCTOR TECHNICAL DATA  
CMOS  
These devices are designed to be used as encoder/decoder pairs in remote  
control applications.  
The MC145026 encodes nine lines of information and serially sends this  
information upon receipt of a transmit enable (TE) signal. The nine lines may be  
encoded with trinary data (low, high, or open) or binary data (low or high). The  
words are transmitted twice per encoding sequence to increase security.  
The MC145027 decoder receives the serial stream and interprets five of the  
trinary digits as an address code. Thus, 243 addresses are possible. If binary  
data is used at the encoder, 32 addresses are possible. The remaining serial  
information is interpreted as four bits of binary data. The valid transmission (VT)  
output goes high on the MC145027 when two conditions are met. First, two  
addresses must be consecutively received (in one encoding sequence) which  
both match the local address. Second, the 4 bits of data must match the last  
valid data received. The active VT indicates that the information at the Data  
output pins has been updated.  
P SUFFIX  
PLASTIC DIP  
CASE 648  
16  
1
D SUFFIX  
SOG PACKAGE  
CASE 751B  
16  
The MC145028 decoder treats all nine trinary digits as an address which  
allows 19,683 codes. If binary data is encoded, 512 codes are possible. The VT  
output goes high on the MC145028 when two addresses are consecutively  
received (in one encoding sequence) which both match the local address.  
1
DW SUFFIX  
SOG PACKAGE  
CASE 751G  
16  
•
•
•
•
•
•
Operating Temperature Range: – 40 to + 85°C  
Very–Low Standby Current for the Encoder: 300 nA Maximum @ 25°C  
Interfaces with RF, Ultrasonic, or Infrared Modulators and Demodulators  
RC Oscillator, No Crystal Required  
High External Component Tolerance; Can Use ± 5% Components  
Internal Power–On Reset Forces All Decoder Outputs Low  
1
ORDERING INFORMATION  
MC145026P  
MC145026D  
Plastic DIP  
SOG Package  
•
Operating Voltage Range: MC145026 = 2.5 to 18 V*  
MC145027, MC145028 = 4.5 to 18 V  
MC145027P, SC41343P  
MC145027DW, SC41343DW  
Plastic DIP  
SOG Package  
•
Low–Voltage Versions Available:  
MC145028P, SC41344P  
Plastic DIP  
MC145028DW, SC41344DW  
SOG Package  
SC41343 = 2.8 to 10 V Version of the MC145027  
SC41344 = 2.8 to 10 V Version of the MC145028  
For Infrared Applications, See Application Note AN1016/D  
•
PIN ASSIGNMENTS  
MC145026  
ENCODER  
MC145027/SC41343  
DECODERS  
MC145028/SC41344  
DECODERS  
A1  
A2  
1
2
16  
15  
V
A1  
A2  
1
2
16  
15  
V
A1  
A2  
1
2
16  
15  
V
DD  
DD  
DD  
D
D6  
A6  
out  
A3  
A4  
3
4
14  
13  
TE  
A3  
A4  
3
4
14  
13  
D7  
D8  
A3  
A4  
3
4
14  
13  
A7  
A8  
R
TC  
A5  
5
6
12  
11  
C
A5  
5
6
12  
11  
D9  
VT  
A5  
5
6
12  
11  
A9  
VT  
TC  
S
A6/D6  
R
R
R
C
1
1
1
A7/D7  
7
8
10  
9
A9/D9  
A8/D8  
C
7
8
10  
9
R /C  
2
7
8
10  
9
R /C  
2
2
1
2
V
V
V
SS  
D
in  
D
in  
SS  
SS  
* All MC145026 devices manufactured after date code 9314 or 314 are guaranteed over this wider voltage range. All previous designs using the  
low–voltage SC41342 should convert to the MC145026, which is a drop–in replacement. The SC41342 part number has been discontinued.  
REV 2  
1/98  
Motorola, Inc. 1998  
1234567...20

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MC1445J TI

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MC1445J/P4 TI

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MC1445J4 TI

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 		IC,VIDEO AMPLIFIER,BIPOLAR,DIP,14PIN,CERAMIC
MC1445L HARRIS

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 		channel-select time of 20 ns typical

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