Overview
The 74HC138D/AU118, produced by Nexperia USA Inc., is a 3-to-8 line inverting decoder/demultiplexer. This CMOS device decodes three binary weighted address inputs (A0, A1, and A2) to eight mutually exclusive outputs (Y0 to Y7). It features three enable inputs (E1, E2, and E3), allowing for flexible control and expansion capabilities. The device is suitable for a wide range of applications, including memory chip select decoding, demultiplexing, and single line peripheral control.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| VCC Supply Voltage Range | 2.0 - 6.0 | V |
| Logic Switching Levels | CMOS | |
| Output Drive Capability | ± 5.2 | mA |
| Propagation Delay (tpd) | 12 | ns |
| Operating Temperature Range | -40 to +125 | °C |
| Package Type | SO16 (SOT109-1) | |
| ESD Protection | HBM: 2000 V, CDM: 1000 V |
Key Features
- Wide supply voltage range from 2.0 V to 6.0 V
- CMOS low power dissipation and high noise immunity
- Schmitt Trigger Action at all inputs
- Inputs accept up to 6.0 V, with clamp diodes for current limiting resistors
- Multiple enable inputs for easy parallel expansion (e.g., 1-of-32 decoder with four '138 ICs and one inverter)
- Demultiplexing capability by using one of the active LOW enable inputs as the data input
- Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
- Totally lead-free and fully RoHS compliant, halogen and antimony free
Applications
- Memory chip select decoding
- Demultiplexing
- Single line peripheral control
- Automotive applications (qualified to AEC-Q100 Grade 1)
Q & A
- What is the primary function of the 74HC138D/AU118?
The primary function is to decode three binary weighted address inputs to eight mutually exclusive outputs, and it can also be used as a demultiplexer.
- What is the supply voltage range for the 74HC138D/AU118?
The supply voltage range is from 2.0 V to 6.0 V.
- What are the logic switching levels for the 74HC138D/AU118?
The logic switching levels are CMOS.
- How many enable inputs does the 74HC138D/AU118 have?
The device has three enable inputs (E1, E2, and E3).
- What is the propagation delay of the 74HC138D/AU118?
The propagation delay is typically 12 ns.
- What is the operating temperature range for the 74HC138D/AU118?
The operating temperature range is from -40°C to +125°C.
- What type of package does the 74HC138D/AU118 come in?
The device comes in an SO16 (SOT109-1) package.
- Does the 74HC138D/AU118 have ESD protection?
Yes, it has ESD protection exceeding 2000 V HBM and 1000 V CDM.
- Is the 74HC138D/AU118 suitable for automotive applications?
Yes, it is qualified to the AEC-Q100 Grade 1 standard for automotive applications.
- What are some common applications of the 74HC138D/AU118?
Common applications include memory chip select decoding, demultiplexing, and single line peripheral control.
