參數(shù)資料
型號(hào): SN74AHCT138DR
廠商: TEXAS INSTRUMENTS INC
元件分類: 編、解碼器及復(fù)用、解復(fù)用
英文描述: AHCT/VHCT/VT SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDSO16
封裝: GREEN, PLASTIC, MS-012AC, SOIC-16
文件頁(yè)數(shù): 12/26頁(yè)
文件大?。?/td> 1057K
代理商: SN74AHCT138DR
SN54AHCT138, SN74AHCT138
3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS
SCLS266M DECEMBER 1995 REVISED JULY 2003
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description/ordering information (continued)
The conditions at the binary-select inputs and the three enable inputs select one of eight output lines. Two
active-low and one active-high enable inputs reduce the need for external gates or inverters when expanding.
A 24-line decoder can be implemented without external inverters, and a 32-line decoder requires only one
inverter. An enable input can be used as a data input for demultiplexing applications.
FUNCTION TABLE
ENABLE INPUTS
SELECT INPUTS
OUTPUTS
G1
G2A
G2B
C
B
A
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
X
H
X
H
X
XH
X
XX
H
HH
H
L
XX
X
XX
H
HH
H
LL
L
LL
L
HH
H
LL
L
LH
H
L
H
HH
H
LL
L
HLH
H
L
HH
H
LL
L
HH
H
HH
L
H
HH
H
LL
H
LL
H
HH
H
L
HH
H
LL
H
LH
H
HH
L
H
LL
H
HLH
HH
H
L
H
L
H
L
logic diagram (positive logic)
G1
G2B
G2A
C
B
A
Y7
Y6
Y5
Y4
Y3
Y2
Y1
Y0
Data
Outputs
Select
Inputs
Enable
Inputs
1
2
3
4
5
6
15
14
13
12
11
10
9
7
Pin numbers shown are for the D, DB, DGV, J, N, NS, PW, RGY, and W packages.
相關(guān)PDF資料
PDF描述
SNJ54AHCT138J AHCT/VHCT/VT SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, CDIP16
SN74AHCT138MDREP AHCT/VHCT SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDSO16
SN74AHCT14DR AHCT/VHCT/VT SERIES, HEX 1-INPUT INVERT GATE, PDSO14
SNJ54AHCT14FKR AHCT/VHCT/VT SERIES, HEX 1-INPUT INVERT GATE, CQCC20
SN74AHCT14RGYRG4 AHCT/VHCT/VT SERIES, HEX 1-INPUT INVERT GATE, PQCC14
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