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SN54HC148 Datasheet(PDF) 1 Page - Texas Instruments

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Part No. SN54HC148
Description  8-LINE TO 3-LINE PRIORITY ENCODERS
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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SN54HC148 Datasheet(HTML) 1 Page - Texas Instruments

 
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SN54HC148, SN74HC148
8LINE TO 3LINE PRIORITY ENCODERS
SCLS109G − MARCH 1984 − REVISED APRIL 2004
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D Wide Operating Voltage Range of 2 V to 6 V
D Outputs Can Drive Up To 10 LSTTL Loads
D Low Power Consumption, 80-µA Max ICC
D Typical tpd = 16 ns
D ±4-mA Output Drive at 5 V
D Low Input Current of 1 µA Max
D Encode Eight Data Lines to 3-Line Binary
(Octal)
D Applications Include:
− n-Bit Encoding
− Code Converters and Generators
description/ordering information
The ’HC148 devices feature priority decoding of
the inputs to ensure that only the highest-order
data line is encoded. These devices encode eight
data lines to 3-line (4-2-1) binary (octal).
Cascading circuitry (enable input EI and enable
output EO) has been provided to allow octal
expansion without the need for external circuitry.
Data inputs and outputs are active at the low logic
level.
ORDERING INFORMATION
TA
PACKAGE†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP − N
Tube of 25
SN74HC148N
SN74HC148N
Tube of 40
SN74HC148D
−40
°C to 85°C
SOIC − D
Reel of 2500
SN74HC148DR
HC148
−40
°C to 85°C
SOIC − D
Reel of 250
SN74HC148DT
HC148
SOIC − DW
Reel of 2000
SN74HC148DWR
HC148
SOP − NS
Reel of 2000
SN74HC148NSR
HC148
CDIP − J
Tube of 25
SNJ54HC148J
SNJ54HC148J
−55
°C to 125°C
CFP − W
Tube of 150
SNJ54HC148W
SNJ54HC148W
−55 C to 125 C
LCCC − FK
Tube of 55
SNJ54HC148FK
SNJ54HC148FK
† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
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.
32 1 20 19
910 11 1213
4
5
6
7
8
18
17
16
15
14
GS
3
NC
2
1
6
7
NC
EI
A2
SN54HC148 . . . FK PACKAGE
(TOP VIEW)
NC − No internal connection
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
4
5
6
7
EI
A2
A1
GND
VCC
EO
GS
3
2
1
0
A0
SN54HC148 ...J OR W PACKAGE
SN74HC148 . . . D, DW, N, OR NS PACKAGE
(TOP VIEW)
Copyright
 2004, Texas Instruments Incorporated
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.
On products compliant to MILPRF38535, 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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