CBT5350BL: Specifications, Datasheet Review, and Practical South African Applications

Overview: What is the CBT5350BL?

The CBT5350BL is a high-speed analog multiplexer/demultiplexer IC, widely used in signal routing, digital switching, and logic-level translation for electronic equipment and embedded designs. Produced by several reputable semiconductor manufacturers, it is valued for its low ON resistance, fast switching, and compatibility with industry-standard logic levels.

Commonly deployed in maker projects, university labs, and industrial control panels around South Africa, the CBT5350BL helps engineers and students design systems with flexible channel selection, data path expansion, and efficient use of microcontroller I/O resources.

Key Features

• Single 8:1 or dual 4:1 multiplexer/demultiplexer operation
• Low ON resistance for minimal signal loss (typ. 5Ohm)
• Broad supply voltage range (4V to 5.5V typical)
• TTL and CMOS logic-level compatible inputs
• High-speed switching for data and analog signals
• Low quiescent current

CBT5350BL Electrical Specifications

Pinout & Example Wiring

A standard CBT5350BL is delivered in a 24-pin SOIC or TSSOP package. Below is an ASCII diagram demonstrating core wiring for 8:1 multiplexing:

MUL_SEL  EN  Vcc  GND  I/O
 |        |    |    |   |
 |        |    |    |   |
 [C]--S1/S2--CBT5350BL--[Signal]

• Supply Vcc and GND as per project voltage
• Apply logic high/low to selection pins S1, S2, S3
• Route input/output signals to I/O pins

Making the Right Selection in South Africa

When selecting a CBT5350BL multiplexer/demultiplexer for your project, keep these points in mind:

• Confirm supply voltage matches your microcontroller or FPGA logic (typically 3.3V or 5V)
• Check ON resistance if you are switching analog sources or signals below a few hundred mV
• Choose a reputable brand for consistent electrical performance
• For educational labs, opt for DIP or SOIC packages for ease of breadboarding
• At Communica, verify local stock by brand and branch if collection is required (Samrand, Pretoria, Cape Town)
• Factor in lead times for tertiary bulk orders; contact the branch for stock status and VAT invoicing options

Practical Applications: Local Project Scenarios

• Embedded Design: Expanding microcontroller input lines by multiplexing sensors (temperature, IR, LDR, etc.) in robotics and IoT solutions
• Education Labs: Demonstration of digital switching, logic training, or analog/digital signal routing for practical electronics courses
• Industry: PLC I/O extension or remote control signal management
• Makerspaces: Modular test setups for evaluating multiple circuits without rewiring

Troubleshooting Tips

• If channels do not switch, verify selection pins voltage compatibility and reference connections
• For unexpected signal loss, measure ON resistance and check for excessive load current
• Suspected overheating? Confirm package derating (ambient temperature in some SA labs can exceed 30 degreesC in summer)
• For analog noise, keep signal traces short and avoid crosstalk with careful PCB layout

Summary Table: Typical Use Cases vs. Alternatives

Explore Further at Communica

For the CBT5350BL and related multiplexer families, browse Communica's Semiconductors category or use the Shop by Brand listings to find local stock and data sheets from global leaders. Technical advice and VAT-invoiced orders are available for South African education and industry orders.

Sources

• Texas Instruments CBT5350 Datasheet
• NXP CBT5350 Product Data Sheet
• Communica Semiconductors Category
• ON Semiconductor CBT5350 Documentation
• About Communica (Pty) Ltd