74F148 ,8-Line to 3-Line Priority Encoder74F1488-Lineto3-LinePriorityEncoderAugust199574F1488-Lineto3-LinePriorityEncoderGeneralDescription
74F148PC ,8-Line to 3-Line Priority EncoderFeaturesThe F148 provides three bits of binary coded output repre-
74F148
8-Line to 3-Line Priority Encoder
TL/F/9480
74F148
8-Line
3-Line
Priority
Encoder
August 1995
74F148
8-Line to 3-Line Priority Encoder
General Description
The ’F148 provides threebitsof binary coded output repre-
sentingthe positionofthe highest order active input, along
withan output indicatingthe presenceofany active input.It easily expandedvia inputand output enablesto provide
priority encoding over many bits.
Features Encodes eight data linesin priority Provides 3-bit binary priority code Input enable capability Signals when datais presentonany input Cascadablefor priority encodingofnbits
Commercial Package PackageDescriptionNumber
74F148PC N16E 16-Lead (0.300× Wide) Molded Dual-In-Line
74F148SC (Note1) M16A 16-Lead (0.150× Wide) Molded Small Outline, JEDEC
74F148SJ(Note1) M16D 16-Lead (0.300× Wide) Molded Small Outline, EIAJ
Note1: Devicesalso availablein13×reel.Use SuffixeSCXandSJX.
Logic Symbols Connection Diagram
TL/F/9480–3
IEEE/IEC
TL/F/9480–6
PinAssignment
for SOIC andDIP
TL/F/9480–1
TRI-STATEÉ isaregistered trademarkof National SemiconductorCorporation.
C1995National SemiconductorCorporation RRD-B30M105/PrintedinU.S.A.
