Overview
The CD74AC138MS2074 is a 3-to-8 line decoder/demultiplexer integrated circuit produced by Harris Corporation. This component is part of the 74AC 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 that require short propagation-delay times. The device features balanced noise immunity and is suitable for use in a wide range of voltage conditions from 1.5V to 5.5V.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Part Number | CD74AC138MS2074 | |
| Manufacturer | Harris Corporation | |
| Description | 3-to-8 Line Decoder/Demultiplexer | |
| Series | 74AC | |
| Package | 16SOIC | |
| Operating Voltage | 1.5V to 5.5V | |
| Propagation Delay (tPLH/tPHL) | 2.8 ns to 11 ns (VCC = 5V) | |
| Output Drive Current | ±24mA | |
| ESD Protection | Exceeds 2kV per MIL-STD-883, method 3015 | |
| Temperature Range | -55°C to 125°C |
Key Features
- Operates over a wide voltage range of 1.5V to 5.5V with balanced noise immunity at 30% of the supply voltage.
- High-speed operation with propagation delays as low as 2.8 ns.
- Low power consumption, making it suitable for battery-powered devices.
- Incorporates three enable inputs to simplify cascading and/or data reception.
- Balanced propagation delays and ±24mA output drive current, allowing fanout to 15 F devices.
- SCR-latchup-resistant CMOS process and circuit design.
- Exceeds 2kV ESD protection per MIL-STD-883, method 3015).
Applications
The CD74AC138MS2074 is designed for high-performance memory-decoding and data-routing applications. It is particularly useful in:
- High-speed memory systems to minimize the effects of system decoding).
- Data-transmission systems requiring short propagation-delay times).
- Cascaded decoder applications where multiple decoders need to be connected).
- Systems requiring balanced noise immunity and low power consumption).
Q & A
- What is the primary function of the CD74AC138MS2074?
The CD74AC138MS2074 is a 3-to-8 line decoder/demultiplexer, designed to decode a 3-bit binary input into one of eight mutually exclusive outputs).
- What is the operating voltage range of the CD74AC138MS2074?
The device operates over a wide voltage range of 1.5V to 5.5V).
- What are the key features of the CD74AC138MS2074 in terms of speed and power consumption?
The device features high-speed operation with propagation delays as low as 2.8 ns and significantly reduced power consumption compared to bipolar F, AS, and S types).
- How does the CD74AC138MS2074 handle ESD protection?
The device exceeds 2kV ESD protection per MIL-STD-883, method 3015).
- What is the output drive current capability of the CD74AC138MS2074?
The device has an output drive current of ±24mA, allowing fanout to 15 F devices).
- What types of applications is the CD74AC138MS2074 suited for?
The device is suited for high-performance memory systems, data-transmission systems, and cascaded decoder applications).
- What is the temperature range for the CD74AC138MS2074?
The device operates over a temperature range of -55°C to 125°C).
- How many enable inputs does the CD74AC138MS2074 have?
The device incorporates three enable inputs to simplify cascading and/or data reception).
- What is the package type of the CD74AC138MS2074?
The device is available in a 16SOIC package).
- Is the CD74AC138MS2074 RoHS compliant?
Yes, the CD74AC138MS2074 is lead-free and RoHS compliant).
