Texas Instruments SN74AHCT139/SN74AHCT139-Q1 Decoders/Demultiplexers
Texas Instruments SN74AHCT139/SN74AHCT139-Q1 2-to-4-Line Decoders/Demultiplexers are designed for 4.5V to 5.5V VCC operation. These devices are intended for high-performance data routing or memory decoding applications requiring very short propagation delay times. These decoders can be used to minimize the effects of system decoding in high-performance memory systems. When used with high-speed memories utilizing a fast enable circuit, the enable time of the memory and the delay times of these decoders are usually less than the typical access time. This reduction means that the effective system delay introduced by the decoders is negligible.
The active-low enable (G)\ input can be used as a data line in demultiplexing applications. These decoders/demultiplexers feature fully buffered inputs, representing only one normalized load to its driving circuit. The Texas Instruments SN74AHCT139-Q1 devices are AEC-Q100 qualified for automotive applications.
Features
- Inputs are TTL-voltage compatible
- Designed specifically for high-speed memory decoders and data-transmission systems
- Incorporate two enable inputs to simplify cascading and/or data reception
- Latch-up performance exceeds 250mA per JESD 17
- ESD protection exceeds JESD 22
- 2000V human-body model (A114-A)
- 200V machine model (A115-A)
- 1000V charged-device model (C101)
Datasheets
Logic Diagram (Positive Logic)
Additional Resources
- Selection Guide: Little Logic Guide
- Selection Guide: Logic Guide
- Application Note: How to Select Little Logic
- Application Note: Understanding and Interpreting Standard-Logic Data Sheets
- User Guide: LOGIC Pocket Data Book
- Application Note: Selecting the Right Level Translation Solution
- Application Note: Advanced High-Speed CMOS (AHC) Logic Family
- ADAS: The technology driving automotive safety forward
Related Development Tool
Texas Instruments 14-24-LOGIC-EVM Logic Evaluation Module (EVM)
Generic evaluation module developed to support any TI logic leaded device in a 14 to 24 pin count.
Publicerad: 2024-06-07
| Uppdaterad: 2025-06-06