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MC74FXXXD Datasheet(PDF) 1 Page - Motorola, Inc |
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MC74FXXXD Datasheet(HTML) 1 Page - Motorola, Inc |
1 / 3 page 4-59 FAST AND LS TTL DATA 8-LINE 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. It is easily expanded via input and output en- ables to provide priority encoding over many bits. • 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 CONNECTION DIAGRAM DIP (TOP VIEW) 15 16 14 13 12 11 10 2 1 3 4 5 6 7 VCC 9 8 EO GS I3 I2 I1 I0 A0 I4 I5 I6 I7 E1 A2 A1 GND NOTE: This diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. LOGIC DIAGRAM I0 I1 I2 I3 I4 I5 I6 I7 E1 EO GS A0 A1 A2 (10) (11) (12) (13) (1) (2) (3) (4) (5) (15) (14) (9) (7) (6) MC54FXXXJ Ceramic MC74FXXXN Plastic MC74FXXXD SOIC MC54/74F148 8-LINE TO 3-LINE PRIORITY ENCODER FAST ™ SHOTTKY TTL J SUFFIX CERAMIC CASE 620-09 N SUFFIX PLASTIC CASE 648-08 16 1 16 1 ORDERING INFORMATION 16 1 D SUFFIX SOIC CASE 751B-03 LOGIC SYMBOL I0 I1 I2 I3 I4 I5 I6 I7 E1 EO A0 A1 A2 GS 5 4 3 2 1 13 12 11 10 14 6 7 9 15 VCC = PIN 16 GND = PIN 8 |
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