Texas Instruments

CD4055BNSR

CD4055BNSR Description

The CD4055BNSR is a 1-digit, 7-segment LCD driver IC designed for surface-mount applications. Manufactured by Texas Instruments, this component is part of the Power Management (PMIC) category. It features a BCD interface and operates within a supply voltage range of 3V to 18V, with a supply current of 40 nA. The CD4055BNSR is packaged in a tape and reel format (TR) and is designated as obsolete, though it remains a viable option for specific applications due to its unique features and performance benefits.

CD4055BNSR Features

• 1 Digit, 7 Segment Display: The CD4055BNSR is designed to drive a single 7-segment LCD display, making it ideal for applications requiring compact and efficient display solutions.
• BCD Interface: This IC utilizes a BCD (Binary-Coded Decimal) interface, simplifying the connection and control from microcontrollers or other digital systems.
• Wide Operating Voltage Range: With a supply voltage range of 3V to 18V, the CD4055BNSR offers flexibility in power supply options, accommodating various power sources and configurations.
• Low Supply Current: Consuming only 40 nA of supply current, this IC is highly energy-efficient, making it suitable for battery-powered and low-power applications.
• Surface Mount Technology (SMT): The surface-mount package type ensures ease of integration into modern PCB designs, enhancing reliability and reducing the overall footprint.
• Compliance and Safety: The CD4055BNSR is REACH unaffected and ROHS3 compliant, ensuring it meets environmental and safety standards for electronics manufacturing.
• Moisture Sensitivity Level (MSL) 1: With an MSL rating of 1, this IC is suitable for unlimited exposure to moisture, reducing the risk of damage during storage and handling.

CD4055BNSR Applications

The CD4055BNSR is well-suited for a variety of applications where a compact, low-power display solution is required. Some specific use cases include:

• Consumer Electronics: Ideal for small electronic devices such as calculators, digital clocks, and simple measurement instruments where a single-digit display is sufficient.
• Industrial Controls: Can be used in control panels and monitoring systems where a single-digit LCD display provides essential information.
• Medical Devices: Suitable for low-power medical devices that require a reliable and compact display, such as glucose meters or simple diagnostic tools.
• Automotive: Useful in automotive applications where space is limited and a single-digit display can provide critical information, such as fuel level indicators or temperature displays.

Conclusion of CD4055BNSR

The CD4055BNSR from Texas Instruments is a versatile and efficient 1-digit, 7-segment LCD driver IC. Its low supply current, wide operating voltage range, and surface-mount package make it an excellent choice for applications requiring a compact and energy-efficient display solution. Despite being marked as obsolete, the CD4055BNSR continues to offer unique advantages over similar models, including its BCD interface and compliance with environmental and safety standards. For applications where a single-digit display is sufficient, the CD4055BNSR remains a reliable and cost-effective option.