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High-speed CD54HC4514 4-to-16 line decoder/demultiplexer IC. 2V-6V operation, low power, and 4-bit input latches. Ideal for address decoding.
24dip
74hct4514 pinout
74hct4514 block diagram
Description
The CD54HC4514 is a versatile high-speed silicon-gate CMOS device. It features a 4-bit strobed latch and a decoder that selects one of sixteen active-high outputs based on the binary code provided at the inputs. When the Latch Enable (LE) pin is high, the outputs follow the input signals; when LE goes low, the current state is stored, allowing the processor to perform other tasks without losing the output state. It can also act as a demultiplexer by using the Enable (E) pin as a data input. Built for reliability, it operates across a wide voltage range and offers high noise immunity, making it suitable for both industrial and military-grade applications.
Features
Multifunction Logic: Operates as either a Binary-to-1-of-16 Decoder or a 1-to-16 Line Demultiplexer.
Integrated Latches: Includes 4-bit input latches to store data and reduce CPU overhead.
High-Speed Performance: Fast signal propagation with balanced delay times.
Low Power Consumption: Significant power reduction compared to older LSTTL logic chips.
Wide Voltage Range: Operates reliably from 2V to 6V.
High Noise Immunity: Designed to minimize interference in noisy digital environments.
High Drive Capability: Can drive up to 10 LSTTL loads.
Applications
Digital Multiplexing: Directing data streams to different destinations.
Address Decoding: Selecting specific memory chips or peripherals in a microcomputer system.
I/O Expansion: Increasing the number of output pins available on a microcontroller like Arduino or STM32.
Hexadecimal/BCD Decoding: Converting binary codes for display or control systems.
Control Systems: Managing multiple switches or relays from a small number of control lines.
Parameters
Technology Family: High-Speed CMOS (HC)
Supply Voltage (VCC): 2.0V to 6.0V
Number of Inputs: 4 Binary Address Inputs
Number of Outputs: 16 Active-High Outputs
Operating Temperature Range: -55°C to +125°C
Package Type: 24-Pin CDIP (Ceramic Dual In-line Package)
Supply Current (Max): 160 µA
External Links
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