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74F138 Series

3-line to 8-line decoder / demultiplexer

Manufacturer: Texas Instruments

Catalog(5 parts)

PartCircuitTypeMounting TypeCurrent - Output High, Low▲▼Current - Output High, Low▲▼Package / CasePackage / Case▲▼Voltage Supply SourceSupplier Device PackageOperating Temperature▲▼Operating Temperature▲▼Voltage - Supply▲▼Voltage - Supply▲▼Independent Circuits▲▼
Texas Instruments
SN74F138DR
Decoder/Demultiplexer 1 x 3:8 16-SOIC
1 x 3:8
Decoder/Demultiplexer
Surface Mount
0.019999999552965164 A
0.0010000000474974513 A
16-SOIC
0.003911599982529879 m, 3.900000095367432 ul
Single Supply
16-SOIC
70 °C
0 °C
5.5 V
4.5 V
1 ul
Texas Instruments
SN74F138DB
Decoder/Demultiplexer 1 x 3:8 16-SOIC
1 x 3:8
Decoder/Demultiplexer
Surface Mount
0.019999999552965164 A
0.0010000000474974513 A
16-SOIC
0.003911599982529879 m, 3.900000095367432 ul
Single Supply
16-SOIC
70 °C
0 °C
5.5 V
4.5 V
1 ul
Texas Instruments
SN74F138N
Decoder/Demultiplexer 1 x 3:8 16-PDIP
1 x 3:8
Decoder/Demultiplexer
Through Hole
0.019999999552965164 A
0.0010000000474974513 A
16-DIP
0.007619999814778566 m, 0.007619999814778566 m
Single Supply
16-PDIP
70 °C
0 °C
5.5 V
4.5 V
1 ul
Texas Instruments
SN74F138NSR
Decoder/Demultiplexer 1 x 3:8 16-SO
1 x 3:8
Decoder/Demultiplexer
Surface Mount
0.019999999552965164 A
0.0010000000474974513 A
16-SOIC (0.209", 5.30mm Width)
Single Supply
16-SO
70 °C
0 °C
5.5 V
4.5 V
1 ul
Texas Instruments
SN74F138NS
Decoder/Demultiplexer 1 x 3:8 16-SO
1 x 3:8
Decoder/Demultiplexer
Surface Mount
0.019999999552965164 A
0.0010000000474974513 A
16-SOIC (0.209", 5.30mm Width)
Single Supply
16-SO
70 °C
0 °C
5.5 V
4.5 V
1 ul

Key Features

• Designed Specifically for High-Speed Memory Decoders and Data Transmission SystemsIncorporates Three Enable Inputs to Simplify Cascading and/or Data ReceptionPackage Options Include Plastic Small-Outline Packages, Ceramic Chip Carriers, and Standard Plastic and Ceramic 300-mil DIPsDesigned Specifically for High-Speed Memory Decoders and Data Transmission SystemsIncorporates Three Enable Inputs to Simplify Cascading and/or Data ReceptionPackage Options Include Plastic Small-Outline Packages, Ceramic Chip Carriers, and Standard Plastic and Ceramic 300-mil DIPs

Description

AI
The ´F138 is 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 employed with high-speed memories utilizing a fast enable circuit, the delay times of this decoder and the enable time of the memory 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 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. The SN54F138 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74F138 is characterized for operation from 0°C to 70°C. The ´F138 is 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 employed with high-speed memories utilizing a fast enable circuit, the delay times of this decoder and the enable time of the memory 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 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. The SN54F138 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74F138 is characterized for operation from 0°C to 70°C.