Texas Instruments

CD4555BF3A

CD4555BF3A Description

The CD4555BF3A from Texas Instruments is a CMOS Dual Binary to 1-of-4 Decoder/Demultiplexer belonging to the 4000B series, designed for high-reliability digital logic applications. This active, RoHS3-compliant device operates over a wide dual-supply voltage range (3V to 18V), making it versatile for both low-power and industrial-level systems. It features two independent 1 x 2:4 decoder circuits, each capable of driving 6.8mA output current (high or low), ensuring robust signal integrity. Packaged in a through-hole tube, it is ideal for prototyping or legacy designs requiring durable through-hole mounting. With EAR99 ECCN and non-MSLA (Moisture Sensitivity Level) compliance, it suits global export and harsh environments.

CD4555BF3A Features

• Dual Decoder/Demultiplexer: Two independent 2:4 decoders in one package, reducing board space and BOM complexity.
• Wide Voltage Range (3V–18V): Compatible with TTL, CMOS, and mixed-voltage systems.
• High Output Drive (6.8mA): Strong sink/source capability for driving LEDs, relays, or logic gates.
• Low Power Consumption: CMOS technology ensures minimal static power dissipation.
• Through-Hole Packaging (Tube): Facilitates easy manual assembly and rework.
• Robust Compliance: ROHS3, EAR99, and non-MSLA for industrial and export-friendly deployment.

CD4555BF3A Applications

• Address Decoding: Efficiently selects memory blocks or peripherals in microprocessor systems.
• Data Routing: Acts as a demultiplexer in communication interfaces or bus-sharing architectures.
• Display Driving: Controls 7-segment LEDs or multiplexed displays in instrumentation panels.
• Industrial Control: Interfaces with sensors/actuators in PLCs due to wide voltage tolerance.
• Legacy System Upgrades: Replaces older 4000-series decoders without redesigns, thanks to pin compatibility.

Conclusion of CD4555BF3A

The CD4555BF3A stands out for its dual-decoder integration, wide voltage flexibility, and high noise immunity, making it a cost-effective solution for both modern and legacy digital systems. Its through-hole package and robust drive strength cater to prototyping, industrial controls, and display applications. Engineers benefit from Texas Instruments’ reliability and the device’s compliance with global standards, ensuring longevity in diverse electronic designs.