SN54147 Datasheet, PDF (1/22 Pages) Texas Instruments – 10-LINE TO 4-LINE AND 8-LINE TO 3-LINE PRIORITY ENCODERS

SN54147, SN54148, SN54LS147, SN54LS148
SN74147, SN74148 (TIM9907), SN74LS147, SN74LS148
10ĆLINE TO 4ĆLINE AND 8ĆLINE TO 3ĆLINE PRIORITY ENCODERS
SDLS053B − OCTOBER 1976 − REVISED MAY 2004
’147, ’LS147
D Encode 10-Line Decimal to 4-Line BCD
D Applications Include:
− Keyboard Encoding
− Range Selection
SN54147, SN54LS147 . . . J OR W PACKAGE
SN74147, SN74LS147 . . . D OR N PACKAGE
(TOP VIEW)
’148, ’LS148
D Encode 8 Data Lines to 3-Line Binary
(Octal)
D Applications Include:
− n-Bit Encoding
− Code Converters and Generators
SN54148, SN54LS148 . . . J OR W PACKAGE
SN74148, SN74LS148 . . . D, N, OR NS PACKAGE
(TOP VIEW)
41
5²
6³
7⁴
8⁵
C⁶
B⁷
GND ⁸
16 V_CC
15 NC
14 D
13 3
12 2
11 1
10 ₉
9_A
41
52
63
74
EI 5
A2 6
A1 7
GND 8
16 V_CC
15 E0
14 GS
13 3
12 2
11 1
10 0
9 A0
SN54LS147 . . . FK PACKAGE
(TOP VIEW)
SN54LS148 . . . FK PACKAGE
(TOP VIEW)
3 2 1 20 19
64
18 D
75
17 3
NC 6
16 NC
87
15 2
C⁸
14 1
9 10 11 12 13
6
3 2 1 20 19
4
18
GS
75
17 3
NC ⁶
16 NC
EI ⁷
15 2
A2 ⁸
14 1
9 10 11 12 13
NC − No internal connection
TYPE
’147
’148
’LS147
’LS148
TYPICAL
DATA
DELAY
10 ns
10 ns
15 ns
15 ns
TYPICAL
POWER
DISSIPATION
225 mW
190 mW
60 mW
60 mW
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 DALLAS, TEXAS 75265
Copyright  2004, Texas Instruments Incorporated
On products compliant to MILĆPRFĆ38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
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