Overview
The 74HC138PW,118 is a 3-to-8 line decoder/demultiplexer integrated circuit produced by Nexperia USA Inc. This device is part of the 74HC series and is designed to decode three binary weighted address inputs (A0, A1, and A2) into eight mutually exclusive outputs (Y0 to Y7). It features three enable inputs (E1, E2, and E3) that allow for multiple enable functions, facilitating easy parallel expansion to a 1-of-32 decoder with just four '138 ICs and one inverter.
The 74HC138PW,118 is housed in a 16-lead TSSOP (Thin Shrink Small Outline Package) and operates over a wide supply voltage range from 2.0 to 6.0 V. It is known for its CMOS low power dissipation, high noise immunity, and robust ESD protection.
Key Specifications
| Type number | VCC (V) | Logic switching levels | Output drive capability (mA) | tpd (ns) | Power dissipation considerations | Tamb (°C) | Rth(j-a) (K/W) | Ψth(j-top) (K/W) | Rth(j-c) (K/W) | Package name |
|---|---|---|---|---|---|---|---|---|---|---|
| 74HC138PW | 2.0 - 6.0 | CMOS | ± 5.2 | 12 | Low | -40 ~ 125 | 125 | 4.7 | 55.5 | TSSOP16 |
Key Features
- Decoder/Demultiplexer Functionality: Decodes three binary weighted address inputs to eight mutually exclusive outputs.
- Multiple Enable Inputs: Features three enable inputs (E1, E2, and E3) allowing for easy parallel expansion.
- Wide Supply Voltage Range: Operates from 2.0 to 6.0 V.
- Low Power Dissipation: CMOS technology ensures low power consumption.
- High Noise Immunity: Provides robust noise immunity.
- ESD Protection: Exceeds 2000 V HBM and 1000 V CDM.
- Operating Temperature Range: Specified from -40 °C to +125 °C.
- Package Options: Available in 16-lead TSSOP package.
Applications
- Memory Chip Select Decoding: Ideal for decoding memory chip select lines.
- Demultiplexing: Can be used as an eight-output demultiplexer.
- General Logic Circuits: Suitable for various logic circuit applications requiring decoding or demultiplexing functions.
- Automotive and Industrial Systems: Used in automotive and industrial systems due to its robust specifications and wide operating temperature range.
Q & A
- What is the primary function of the 74HC138PW,118 IC?
The primary function is to decode three binary weighted address inputs into eight mutually exclusive outputs, and it can also be used as an eight-output demultiplexer.
- What is the supply voltage range for the 74HC138PW,118?
The supply voltage range is from 2.0 to 6.0 V.
- What type of logic switching levels does the 74HC138PW,118 support?
The 74HC138PW,118 supports CMOS logic switching levels.
- What is the output drive capability of the 74HC138PW,118?
The output drive capability is ± 5.2 mA.
- What is the propagation delay of the 74HC138PW,118?
The propagation delay is approximately 12 ns.
- What is the operating temperature range for the 74HC138PW,118?
The operating temperature range is from -40 °C to +125 °C.
- What type of package is the 74HC138PW,118 available in?
The 74HC138PW,118 is available in a 16-lead TSSOP package.
- Does the 74HC138PW,118 have ESD protection?
Yes, it exceeds 2000 V HBM and 1000 V CDM for ESD protection.
- Can the 74HC138PW,118 be used in automotive applications?
Yes, it is suitable for automotive applications due to its robust specifications and wide operating temperature range.
- How can the 74HC138PW,118 be expanded for more outputs?
The device can be expanded to a 1-of-32 decoder using four '138 ICs and one inverter.
