Overview
The 74HCT138PW,112 from Nexperia USA Inc. is a 3-to-8 line decoder/demultiplexer with inverting outputs. This integrated circuit 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 easy parallel expansion and demultiplexing capabilities. The device is part of the 74HCT series, which operates at TTL logic levels, making it compatible with a wide range of applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| VCC (Supply Voltage) | 4.5 to 5.5 | V |
| Logic Switching Levels | TTL | - |
| Output Drive Capability | ± 5.2 | mA |
| tpd (Propagation Delay) | 12 to 60 | ns |
| Power Dissipation | Low | - |
| Operating Temperature Range | -40 to +125 | °C |
| Package Type | 16-TSSOP (SOT403-1) | - |
| ESD Protection | HBM: >2000 V, CDM: >1000 V | - |
Key Features
- Wide Supply Voltage Range: Operates from 4.5 to 5.5 V.
- Low Power Dissipation: CMOS technology ensures low power consumption.
- High Noise Immunity: Enhanced noise immunity for reliable operation.
- Latch-up Performance: Exceeds 100 mA per JESD 78 Class II Level B.
- Demultiplexing Capability: Can be used as an eight-output demultiplexer.
- Multiple Input Enable: Allows easy parallel expansion to a 1-of-32 decoder.
- Input Clamp Diodes: Enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.
- Compliance with JEDEC Standards: Meets JESD8C and JESD7A standards.
Applications
The 74HCT138PW,112 is versatile and can be used in various applications, including:
- Memory Chip Select Decoding: Ideal for decoding memory addresses in digital systems.
- Demultiplexing: Can be used to demultiplex data signals in communication systems.
- Industrial and Automotive Systems: Suitable for use in industrial and automotive environments due to its robust specifications.
- Consumer Electronics: Used in consumer electronics for decoding and demultiplexing functions.
Q & A
- What is the primary function of the 74HCT138PW,112?
The primary function is to decode three binary weighted address inputs to eight mutually exclusive outputs.
- What is the supply voltage range for the 74HCT138PW,112?
The supply voltage range is from 4.5 to 5.5 V.
- What type of logic levels does the 74HCT138PW,112 operate with?
The device operates with TTL logic levels.
- What is the propagation delay of the 74HCT138PW,112?
The propagation delay ranges from 12 to 60 ns depending on the supply voltage.
- Does the 74HCT138PW,112 have ESD protection?
- What is the operating temperature range of the 74HCT138PW,112?
The operating temperature range is from -40 to +125 °C.
- Can the 74HCT138PW,112 be used as a demultiplexer?
- What package type is the 74HCT138PW,112 available in?
- Is the 74HCT138PW,112 compliant with JEDEC standards?
- What are some common applications of the 74HCT138PW,112?
