Overview
The SN74AHCT139D is a dual 2-line to 4-line decoder/demultiplexer manufactured by Texas Instruments. This IC is designed for high-performance memory-decoding and data-routing applications, offering very short propagation delay times. It operates within a voltage range of 4.5V to 5.5V and is suitable for use in various digital systems. The device is particularly advantageous in applications requiring efficient signal routing and decoding, such as in memory systems and data transmission setups.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Technology Family | AHCT | - | - |
| Number of Channels | 2 | - | - |
| Operating Temperature Range | -40 to 85 | °C | - |
| ICC (Max) | 20 | µA | - |
| Inputs | TTL-Voltage Compatible | - | - |
| ESD Protection | Exceeds JESD 22 | - | 2000-V Human-Body Model, 200-V Machine Model, 1000-V Charged-Device Model |
| Supply Voltage | 4.5 to 5.5 | V | - |
| Package | SOIC-16 | - | - |
Key Features
- Designed specifically for high-speed memory decoders and data-transmission systems.
- Incorporates two enable inputs to simplify cascading and/or data reception.
- Latch-up performance exceeds 250 mA per JESD 17.
- ESD protection exceeds JESD 22 standards.
Applications
The SN74AHCT139D is widely used in high-performance memory systems to minimize the effects of system decoding. It is also employed in data-routing applications that require very short propagation delay times. Typical applications include memory address decoding, data multiplexing, and signal routing in digital systems. Its compatibility with TTL voltage levels makes it suitable for interfacing with both CMOS and TTL logic families.
Q & A
What is the operating voltage range of SN74AHCT139D?
The operating voltage range is from 4.5V to 5.5V.
What is the maximum operating temperature of SN74AHCT139D?
The maximum operating temperature is 85°C.
How many channels does SN74AHCT139D have?
It has 2 channels.
What is the typical application of SN74AHCT139D?
It is typically used in high-speed memory decoding and data-routing applications.
Is SN74AHCT139D compatible with TTL voltage levels?
Yes, it is compatible with TTL voltage levels.
What is the package type of SN74AHCT139D?
It comes in an SOIC-16 package.
What is the maximum ICC of SN74AHCT139D?
The maximum ICC is 20 µA.
Does SN74AHCT139D have ESD protection?
Yes, it has ESD protection exceeding JESD 22 standards.
What is the latch-up performance of SN74AHCT139D?
It exceeds 250 mA per JESD 17.
Can SN74AHCT139D be used in cascading applications?
Yes, it incorporates two enable inputs to simplify cascading and data reception.
