MC74F148 Motorola, MC74F148 Datasheet
MC74F148
Manufacturer Part Number
MC74F148
Description
8-Line to 3-line Priority Encoder
Manufacturer
Motorola
Datasheet
1.MC74F148.pdf
(3 pages)
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8-LINE TO 3-LINE
PRIORITY ENCODER
the position of the highest order active input, along with an output indicating
the presence of any active input. It is easily expanded via input and output en-
ables to provide priority encoding over many bits.
The MC54/74F148 provides three bits of binary coded output representing
Encodes Eight Data Lines in Priority
Provides 3-Bit Binary Priority Code
Input Enable Capability
Signals When Data Present on Any Input
Cascadable for Priority Encoding of n Bits
NOTE:
This diagram is provided only for the understanding of logic operations and should not
be used to estimate propagation delays.
E1
CONNECTION DIAGRAM DIP (TOP VIEW)
I 0
I 1
I 2
I 3
I 4
I 5
I 6
I 7
V CC
16
I 4
1
(10)
(11)
(12)
(13)
(1)
(2)
(3)
(4)
(5)
EO
15
I 5
2
GS
14
LOGIC DIAGRAM
I 6
3
13
I 3
I 7
4
12
E1
I 2
5
A 2
11
I 1
6
FAST AND LS TTL DATA
10
A 1
I 0
7
GND
A 0
9
8
(15)
(14)
(9)
(7)
(6)
4-59
EO
GS
A 0
A 1
A 2
16
16
MC54/74F148
ORDERING INFORMATION
16
1
1
10
MC54FXXXJ
MC74FXXXN
MC74FXXXD
PRIORITY ENCODER
I 0 I 1 I 2 I 3 I 4 I 5 I 6 I 7 E1
15
EO
FAST
8-LINE TO 3-LINE
11
1
LOGIC SYMBOL
12
A 0
9
V CC = PIN 16
GND = PIN 8
SHOTTKY TTL
13
A 1
7
1
Ceramic
Plastic
SOIC
2
CASE 751B-03
CASE 620-09
CASE 648-08
A 2
6
CERAMIC
N SUFFIX
D SUFFIX
J SUFFIX
3
PLASTIC
SOIC
4
GS
14
5
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MC74F148 Summary of contents
Page 1
TO 3-LINE PRIORITY ENCODER The MC54/74F148 provides three bits of binary coded output representing the position of the highest order active input, along with an output indicating the presence of any active input easily expanded via input ...
Page 2
GUARANTEED OPERATING RANGES Symbol V CC Supply Voltage T A Operating Ambient Temperature Range I OH Output Current — High I OL Output Current — Low The F148 8-input priority encoder accepts data from eight www.DataSheet4U.com active LOW inputs (I ...
Page 3
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified) Symbol V IH Input HIGH Voltage V IL Input LOW Voltage V IK Input Clamp Diode Voltage V OH Output HIGH Voltage V OL Output LOW Voltage I IH Input HIGH ...