ordering information The ’AHCT139 devices are dual 2-line to 4-line decoders/demultiplexers designed for 4.5-V to 5.5-V VCC operation. These devices are designed to be used in high-performance memory-decoding or data-routing applications requiring very short propagation delay times. In high-performance memory systems, these decoders can be used to minimize t.
y are less than the typical access time of the memory. This means that the effective system delay introduced by the decoders is negligible.
SCLS267M
– DECEMBER 1995
– REVISED MARCH 2003
SN54AHCT139 . . . J OR W PACKAGE SN74AHCT139 . . . D, DB, DGV, N, NS, OR PW PACKAGE
(TOP VIEW)
1G 1 1A 2 1B 3 1Y0 4 1Y1 5 1Y2 6 1Y3 7 GND 8
16 VCC 15 2G 14 2A 13 2B 12 2Y0 11 2Y1 10 2Y2 9 2Y3
SN54AHCT139 . . . FK PACKAGE (TOP VIEW)
2G
VCC
NC
1G
1A
1B
3 2 1 20 19
4
18
2A
1Y0 5
17 2B
NC 6
16 NC
1Y1 7
15 2Y0
1Y2 8
14 2Y1
9 10 11 12 13
2Y2
2Y3
NC
GND
1Y3
NC
– No internal connection
ORD.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | SN74AHCT132 |
Texas Instruments |
QUADRUPLE POSITIVE-NAND GATES | |
2 | SN74AHCT132D |
Texas Instruments |
QUADRUPLE POSITIVE-NAND GATES | |
3 | SN74AHCT132N |
Texas Instruments |
QUADRUPLE POSITIVE-NAND GATES | |
4 | SN74AHCT138 |
Texas Instruments |
3-Line to 8-Line Decoders/Demultiplexers | |
5 | SN74AHCT138-EP |
Texas Instruments |
3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS | |
6 | SN74AHCT138D |
Texas Instruments |
3-Line to 8-Line Decoders/Demultiplexers | |
7 | SN74AHCT138N |
Texas Instruments |
3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS | |
8 | SN74AHCT138Q-Q1 |
Texas Instruments |
3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS | |
9 | SN74AHCT139D |
Texas Instruments |
DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS | |
10 | SN74AHCT139N |
Texas Instruments |
DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS | |
11 | SN74AHCT139PW |
Texas Instruments |
DUAL 2-LINE TO 4-LINE DECODERS/DEMULTIPLEXERS | |
12 | SN74AHCT123A |
Texas Instruments |
DUAL RETRIGGERABLE MONOSTABLE MULTIVIBRATORS |