Overview
The SN74HC139DRE4 is a dual 2-line to 4-line decoder/demultiplexer integrated circuit produced by Texas Instruments. This device is part of the 74HC series, known for its high-speed and low-power consumption characteristics. It is designed for high-performance memory-decoding and data-routing applications, particularly in systems requiring short propagation delay times. The SN74HC139DRE4 features two individual 2-line to 4-line decoders in a single package, making it ideal for minimizing system decoding delays in high-speed memory systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | Texas Instruments | |
| Part Number | SN74HC139DRE4 | |
| Package Type | 16-SOIC (0.154", 3.90mm Width) | |
| Supply Voltage Range | 2 V to 6 V | V |
| Operating Temperature Range | -40°C to 85°C | °C |
| Mounting Type | Surface Mount | |
| Number of Terminals | 16 | |
| Terminal Form | Gull Wing | |
| Output Drive Capability | ±4 mA at 5 V | mA |
| Propagation Delay (tpd) | 44 ns (typical at 5 V) | ns |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | |
| Power Consumption (ICC) | 80 μA (maximum at 6 V) | μA |
Key Features
- High-Speed Operation: Designed for high-performance memory-decoding and data-routing applications with short propagation delay times (typical tpd = 44 ns at 5 V).
- Wide Operating Voltage Range: Operates from 2 V to 6 V, making it versatile for various system designs.
- Low Power Consumption: Maximum ICC of 80 μA at 6 V, contributing to energy-efficient operation.
- Buffered Inputs: Each input represents only one normalized load to its driving circuit, simplifying system design.
- Dual Decoders/Demultiplexers: Contains two individual 2-line to 4-line decoders in a single package, enhancing functionality.
- Enable Inputs: Incorporates two enable inputs to simplify cascading and/or data reception).
- Output Drive Capability: Outputs can drive up to 10 LSTTL loads and provide ±4 mA output drive at 5 V).
Applications
- High-Speed Memory Systems: Ideal for minimizing system decoding delays in high-speed memory systems).
- Data-Transmission Systems: Suitable for applications requiring fast data transmission and decoding).
- Demultiplexing Applications: The active-low enable (G) input can be used as a data line in demultiplexing applications).
- General Logic Circuits: Can be used in various logic circuits where decoding or demultiplexing functions are required.
Q & A
- What is the SN74HC139DRE4 used for?
The SN74HC139DRE4 is used for high-performance memory-decoding and data-routing applications, particularly in systems requiring short propagation delay times.
- What is the operating voltage range of the SN74HC139DRE4?
The operating voltage range is from 2 V to 6 V.
- What is the typical propagation delay of the SN74HC139DRE4?
The typical propagation delay (tpd) is 44 ns at 5 V.
- How many decoders are included in the SN74HC139DRE4?
The device includes two individual 2-line to 4-line decoders in a single package.
- What is the maximum output current of the SN74HC139DRE4?
The maximum output current is ±5.2 mA.
- What is the moisture sensitivity level (MSL) of the SN74HC139DRE4?
The MSL is 1 (Unlimited).
- What is the package type of the SN74HC139DRE4?
The package type is 16-SOIC (0.154", 3.90mm Width).
- What is the operating temperature range of the SN74HC139DRE4?
The operating temperature range is from -40°C to 85°C.
- Can the SN74HC139DRE4 drive LSTTL loads?
Yes, the outputs can drive up to 10 LSTTL loads.
- What is the maximum power consumption of the SN74HC139DRE4?
The maximum ICC is 80 μA at 6 V.
