Overview
The SN74HC139DRG4 is a dual 2-line to 4-line decoder/demultiplexer integrated circuit produced by Texas Instruments. This device is part of the 74HC series and is designed for high-performance memory-decoding and data-routing applications. It 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 and data-transmission applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | Texas Instruments | |
| Manufacturer's Part Number | SN74HC139DRG4 | |
| Description | OTHER DECODER/DRIVER | |
| Temperature Grade | INDUSTRIAL | |
| Terminal Form | GULL WING | |
| No. of Terminals | 16 | |
| Package Code | SOP | |
| Package Shape | RECTANGULAR | |
| Minimum Supply Voltage (Vsup) | 2 V | V |
| Maximum Supply Voltage (Vsup) | 6 V | V |
| Maximum Operating Temperature | 85°C | °C |
| Minimum Operating Temperature | -40°C | °C |
| Propagation Delay At Nominal Supply | 44 ns | ns |
| Output Polarity | INVERTED | |
| Logic IC Type | OTHER DECODER/DRIVER | |
| Technology | CMOS | |
| Surface Mount | YES | |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) | |
| Maximum I (ol) | 5.2 mA | mA |
| Load Capacitance (CL) | 50 pF | pF |
| Package Body Material | PLASTIC/EPOXY | |
| Width | 3.9 mm | mm |
| Length | 9.9 mm | mm |
| Maximum Seated Height | 1.75 mm | mm |
| Terminal Pitch | 1.27 mm | mm |
Key Features
- Wide Operating Voltage Range: The SN74HC139DRG4 operates over a voltage range of 2 V to 6 V, making it versatile for various applications.
- High-Speed Performance: Designed for high-speed memory-decoding and data-routing applications, these decoders feature very short propagation delay times, typically around 44 ns.
- Low Power Consumption: The device has low power consumption, with a maximum ICC of 80 μA.
- Output Drive Capability: Outputs can drive up to 10 LSTTL loads and provide ±4-mA output drive at 5 V.
- Enable Inputs: Incorporates two enable inputs to simplify cascading and/or data reception.
- Buffered Inputs: Fully buffered inputs, each representing only one normalized load to its driving circuit.
Applications
- High-Speed Memory Systems: Ideal for minimizing system decoding delays in high-speed memory systems.
- Data-Transmission Systems: Suitable for data-routing applications requiring fast enable circuits.
- 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 SN74HC139DRG4 used for?
The SN74HC139DRG4 is used for high-speed memory-decoding and data-routing applications, particularly in systems requiring short propagation delay times.
- What is the operating voltage range of the SN74HC139DRG4?
The operating voltage range is from 2 V to 6 V.
- What is the maximum operating temperature of the SN74HC139DRG4?
The maximum operating temperature is 85°C, and the minimum is -40°C.
- How many decoders are included in the SN74HC139DRG4?
The device includes two individual 2-line to 4-line decoders in a single package.
- What is the typical propagation delay of the SN74HC139DRG4?
The typical propagation delay is around 44 ns.
- Can the SN74HC139DRG4 drive LSTTL loads?
Yes, the outputs can drive up to 10 LSTTL loads.
- What is the maximum output current of the SN74HC139DRG4?
The maximum output current (Iol) is 5.2 mA.
- What type of technology is used in the SN74HC139DRG4?
The device uses CMOS technology.
- Is the SN74HC139DRG4 suitable for surface mounting?
Yes, it is designed for surface mount applications.
- What is the package type of the SN74HC139DRG4?
The package type is 16-SOIC (Small Outline Integrated Circuit).
