The 74HC158D is a high-speed Si-gate CMOS device and is pin compatible with Low-power Schottky TTL (LSTTL). Manufactured by NXP Semiconductors, it is part of the 74HC family, known for its versatility and reliability in a wide range of digital applications. This quad 2-input multiplexer is designed to select four bits of data from two sources under the control of a common data select input. The device features four identical 2-input multiplexers with 3-state outputs that can interface directly with standard 15V digital circuits.
Key Features
- Wide operating voltage range from 2V to 6V
- High noise immunity
- Low power consumption: 20 µA maximum ICC
- Output drive capability: 10 LSTTL loads
- Symmetrical output impedance
- High noise immunity
- Non-inverting 3-state outputs
- Inputs and outputs on opposite sides of package allowing easy interface with microprocessors
- Complies with JEDEC standard no. 7A
- ESD protection:
- HBM JESD22-A114E exceeds 2000 V
- MM JESD22-A115-A exceeds 200 V
- Multiple package options
Applications
The 74HC158D is suitable for a variety of applications that require data selection or multiplexing. It is commonly used in digital systems such as:
- Function generators
- Computer systems
- Data routing
- Signal gating
- Control systems
Product Details
The device is provided in a slim SO16 package. Its logic diagram consists of four multiplexers, each with two data inputs (1A0, 1A1, 2A0, etc.), a common data select input (1S, 2S, etc.), and an enable input (1G, 2G, etc.). When the enable input is high, the respective multiplexer's output is in the high-impedance state. The 74HC158D is designed for asynchronous operation, allowing for independent control of data select and enable inputs.
