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78027012A Datasheet

  • 78027012A

  • 10-LINE TO 4-LINE AND 8-LINE TO 3-LINE PRIORITY ENCODERS

  • 621.18KB

  • 22頁

  • TI

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SN54147, SN54148, SN54LS147, SN54LS148
SN74147, SN74148 (TIM9907), SN74LS147, SN74LS148
10 LINE TO 4 LINE AND 8 LINE TO 3 LINE PRIORITY ENCODERS
SDLS053B 鈭?OCTOBER 1976 鈭?REVISED MAY 2004
D
D
鈥?47, 鈥橪S147
Encode 10-Line Decimal to 4-Line BCD
Applications Include:
鈭?Keyboard Encoding
鈭?Range Selection
D
D
鈥?48, 鈥橪S148
Encode 8 Data Lines to 3-Line Binary
(Octal)
Applications Include:
鈭?n-Bit Encoding
鈭?Code Converters and Generators
SN54147, SN54LS147 . . . J OR W PACKAGE
SN74147, SN74LS147 . . . D OR N PACKAGE
(TOP VIEW)
SN54148, SN54LS148 . . . J OR W PACKAGE
SN74148, SN74LS148 . . . D, N, OR NS PACKAGE
(TOP VIEW)
4
5
6
7
8
C
B
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC
NC
D
3
2
1
9
A
4
5
6
7
EI
A2
A1
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
V
CC
E0
GS
3
2
1
0
A0
SN54LS147 . . . FK PACKAGE
(TOP VIEW)
SN54LS148 . . . FK PACKAGE
(TOP VIEW)
5
4
NC
V
CC
NC
6
7
NC
8
C
4
5
6
7
8
3 2 1 20 19
18
17
16
15
14
9 10 11 12 13
5
4
NC
V
CC
E0
D
3
NC
2
1
6
7
NC
EI
A2
4
5
6
7
8
3 2 1 20 19
18
17
16
15
14
9 10 11 12 13
GS
3
NC
2
1
B
GND
NC
A
9
NC 鈭?No internal connection
TYPICAL
DATA
DELAY
10 ns
10 ns
15 ns
15 ns
TYPICAL
POWER
DISSIPATION
225 mW
190 mW
60 mW
60 mW
TYPE
鈥?47
鈥?48
鈥橪S147
鈥橪S148
NOTE: The SN54147, SN54LS147, SN54148, SN74147, SN74LS147, and SN74148 are obsolete and are no longer supplied.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
A1
GND
NC
A0
0
On products compliant to MIL PRF 38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
Copyright
錚?/div>
2004, Texas Instruments Incorporated
1

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