參數(shù)資料
型號(hào)： SN54HC148WR
廠商： TEXAS INSTRUMENTS INC
元件分類： 算術(shù)邏輯單元
英文描述： HC/UH SERIES, 8-BIT ENCODER, CDFP16
封裝： CERAMIC, DFP-16
文件頁數(shù)： 9/11頁
文件大?。?/td> 215K
代理商： SN54HC148WR
SN54HC148, SN74HC148
8-LINE TO 3-LINE PRIORITY ENCODERS
SCLS109D – MARCH 1984 – REVISED MAY 1997
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
0 1
23
4
5
67 EI
EO A0
A1
A2 GS
’HC148
0 1
23
4
5
67 EI
EO
A0
A1
A2
GS
’HC148
’HC08
0 1
23
4
5
67
8
8 9 10 11 12 13 14 15
Enable
(active low)
01
2
3
Encoded Data (active low)
Priority Flag
(active low)
16-Line Data (active low)
0 1
23
4
5
67 EI
EO A0
A1
A2 GS
’HC148
0 1
23
4
5
67 EI
EO
A0
A1
A2
GS
’HC148
’HC00
0 1
23
4
5
67
8
8 9 10 11 12 13 14 15
Enable
(active low)
01
2
3
Encoded Data (active high)
Priority Flag
(active high)
16-Line Data (active low)
Figure 2. Priority Encoder for 16 Bits
Since the ’HC148 is a combinational logic circuit, wrong addresses can appear during input transients. Moreover, a
change from high to low at EI can cause a transient low on GS when all inputs are high. This must be considered when
strobing the outputs.
相關(guān)PDF資料
PDF描述
SN54HC160J-00 HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP DECADE COUNTER, CDIP16
SNJ54HC162FK-00 HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP DECADE COUNTER, CQCC20
SN74HC163N-10 HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP BINARY COUNTER, PDIP16
SN54HC161J-00 HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP BINARY COUNTER, CDIP16
SNJ54HC160FK-00 HC/UH SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP DECADE COUNTER, CQCC20
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