Manufacturer Part Number
DM74LS138N
Manufacturer
onsemi
Introduction
The DM74LS138N is a high-speed 1-of-8 Decoder/Demultiplexer from onsemi designed to be used in high-performance memory-decoding or data-routing applications requiring very short propagation delay times.
Product Features and Performance
1-of-8 decoding with inverting outputs
High-speed with typical propagation delay of 15 ns
Low power consumption
Two or three binary select inputs
Three enable inputs to simplify cascading
Outputs can drive up to 10 LS-TTL loads
Product Advantages
Ease of use in memory chip select decoding
Efficient data-routing with high speed
Low power consumption ensures energy saving
High fan-out capacity
Key Technical Parameters
Type: Decoder/Demultiplexer
Circuit: 1 x 3:8
Independent Circuits: 1
Current - Output High, Low: 400µA, 8mA
Voltage Supply Source: Single Supply
Voltage - Supply: 4.75V ~ 5.25V
Operating Temperature: 0°C ~ 70°C
Quality and Safety Features
Compliance with the 74LS standard for logic devices
Compatibility
Through Hole mounting compatible with standard 16-DIP (0.300", 7.62mm) sockets
Supports TTL level outputs
Application Areas
Memory systems
Data routing
Control applications
Multiplexing
Product Lifecycle
Product Status: Obsolete
Availability of replacements or upgrades might be limited
Several Key Reasons to Choose This Product
High-speed operation ideal for advanced systems
Versatility with multiple enable inputs
Compatible with various TTL loads
Low power consumption suitable for energy-sensitive projects
Proven reliability following the 74LS logic family standards