DM74ALS138, DM-74ALS138M, DM74ALS138M_ Selling Leads, Datasheet
MFG:FSC Package Cooled:n/a D/C:2010+
DM74ALS138, DM-74ALS138M, DM74ALS138M_ Datasheet download
Part Number: DM74ALS138
MFG: FSC
Package Cooled: n/a
D/C: 2010+
MFG:FSC Package Cooled:n/a D/C:2010+
DM74ALS138, DM-74ALS138M, DM74ALS138M_ Datasheet download
MFG: FSC
Package Cooled: n/a
D/C: 2010+
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Datasheet: DM74ALS138
File Size: 67898 KB
Manufacturer: FAIRCHILD [Fairchild Semiconductor]
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PDF/DataSheet Download
Datasheet: DM-106B
File Size: 103609 KB
Manufacturer: SONY [Sony Corporation]
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PDF/DataSheet Download
Datasheet: DM7093
File Size: 72291 KB
Manufacturer: ETC [ETC]
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These Schottky-clamped circuits 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 the effects of system decoding. When used with high-speed memories, the delay times of these decoders are usually less than the typical access time of the memory. This means that the effective system delay introduced by the decoder is negligible.
The DM74ALS138 decodes one-of-eight lines, based upon the conditions at the three binary select inputs and the three enable inputs. Two active-LOW and one active-HIGH enable inputs reduce the need for external gates or invert-ers when expanding. A 24-line decoder can be imple-mented with no external inverters, and 32-line decoder requires only one inverter. An enable input can be used as a data input for demultiplexing applications.
This decoder/demultiplexer features fully buffered inputs,presenting only one normalized load to its driving circuit. All inputs are clamped with high-performance Schottky diodes to suppress line-ringing and simplify system design.
Supply Voltage 7V
Input Voltage 7V
Operating Free Air Temperature Range 0 to , 70
Storage Temperature Range -65 to , 150
Typical JA
N Package 75.5/W
M Package 104.0/W
Note 2: The "Absolute Maximum Ratings" are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings.The "Recommended Operating Conditions" table will define the conditions for actual device operation.