Overview
The SN74HC138DRG4 is a 3-line to 8-line decoder/demultiplexer produced by Texas Instruments. This device is designed for high-performance memory-decoding and data-routing applications, particularly where short propagation delay times are crucial. It is part of the 74HC series, known for its high-speed and low power consumption characteristics. The SN74HC138DRG4 is available in a 16-pin SOIC (Small Outline Integrated Circuit) package, making it suitable for a variety of applications requiring compact and efficient logic circuitry.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SOIC (16 pins) |
| Operating Voltage Range | 2 V to 6 V |
| Operating Temperature Range | -40°C to 85°C |
| Propagation Delay Time (tpd) | Typical 15 ns |
| Output Drive | ±4 mA at 5 V |
| Input Current | Maximum 1 µA |
| Power Consumption | Maximum 80 µA ICC |
| Output Load Capability | Up to 10 LSTTL loads |
| Enable Inputs | Three enable inputs (two active-low, one active-high) |
Key Features
- Targeted specifically for high-speed memory decoders and data-transmission systems.
- Wide operating voltage range (2 V to 6 V).
- Outputs can drive up to 10 LSTTL loads.
- Low power consumption, with a maximum ICC of 80 µA.
- Typical propagation delay time of 15 ns.
- ±4 mA output drive at 5 V.
- Low input current of 1 µA maximum.
- Active low outputs (selected output is low).
- Incorporates three enable inputs to simplify cascading or data reception.
Applications
- LED Displays
- Servers
- White Goods
- Power Infrastructure
- Building Automation
- Factory Automation
Q & A
- What is the primary function of the SN74HC138DRG4?
The SN74HC138DRG4 is a 3-line to 8-line decoder/demultiplexer, designed for high-performance memory-decoding and data-routing applications.
- What is the operating voltage range of the SN74HC138DRG4?
The operating voltage range is from 2 V to 6 V.
- What is the typical propagation delay time of the SN74HC138DRG4?
The typical propagation delay time is 15 ns.
- How many enable inputs does the SN74HC138DRG4 have?
The device has three enable inputs: two active-low and one active-high.
- What is the maximum output drive of the SN74HC138DRG4 at 5 V?
The maximum output drive is ±4 mA at 5 V.
- Is the SN74HC138DRG4 RoHS compliant?
- What are the common applications of the SN74HC138DRG4?
- What package types are available for the SN74HC138?
The SN74HC138 is available in various packages including SOIC, SSOP, PDIP, SO, TSSOP, CDIP, CFP, and LCCC.
- How many LSTTL loads can the outputs of the SN74HC138DRG4 drive?
The outputs can drive up to 10 LSTTL loads.
- What is the maximum input current of the SN74HC138DRG4?
The maximum input current is 1 µA.
