TI SN74LS139ADR

解码器/多路分解器1 x 2：44.75V ~ 5.25V

Overview

These Schottky-clamped TTL MSI 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 employed with high-speed memories utilizing a fast-enable circuit, the delay times of these decoders 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 Schottky-clamped system decoder is negligible.

All of these decoders/demultiplexers feature fully buffered inputs, each of which represents only one normalized load to its driving circuit. All inputs are clamped with high-performance Schottky diodes to suppress line-ringing and to simplify system design. The SN54LS139A and SN54S139 are characterized for operation range of –55°C to 125°C. The SN74LS139A and SN74S139A are characterized for operation from 0°C to 70°C.

Features

74LS Series
Supplied in the 16-SOIC (0.154, 3.90mm Width) package
Adopting a supply type of Single
Power supplies of 5V
Operating with the supply voltage of 5V
SCHOTTKY CLAMPED FOR HIGH PERFORMANCE

Surface Mount Mounting Type

Applications

There are a lot of Texas Instruments
SN74LS139ADR Signal Switches / Multiplexers / Decoders applications.

• Time division multiplexing system
• Frequency multiplexing system
• A/D converters
• D/A converters
• Implementing boolean functions with multiple variables
• Data collection system
• Audio transmission
• Video transmission
• Image transmission
• Recording transmission