SN74CB3Q3253PW: Texas Instruments' Advanced 2x4:1 Multiplexer/Demultiplexer Solution

Product Overview

The SN74CB3Q3253PW from Texas Instruments represents cutting-edge signal switching technology, offering engineers a reliable solution for complex data routing challenges. This high-performance IC combines dual 4:1 multiplexing/demultiplexing functionality in a compact TSSOP-16 package, making it indispensable for modern digital systems requiring efficient signal management.

Technical Specifications

Key Electrical Characteristics

• Supply Voltage Range: 2.3V to 3.6V operation (ideal for low-power designs)
• Switching Performance: <5ns typical propagation delay at 3.3V
• On-State Resistance: 5 typical (minimizes signal attenuation)
• Bandwidth: Supports data rates up to 500MHz
• Power Consumption: Ultra-low 0.1 A standby current

Physical Attributes

• Package: 16-pin TSSOP (4.4mm width)
• Mounting: Surface-mount technology (SMT) compatible
• Operating Temp: Industrial-grade -40 C to +85 C range

Advanced Features

Dual Independent Channels

The IC incorporates two completely independent 4:1 multiplexer/demultiplexer circuits, allowing simultaneous processing of multiple signal paths without crosstalk. Each channel features:

• 4 input/output ports
• Dedicated select lines (S0, S1)
• Individual enable controls

Signal Integrity Enhancements

Texas Instruments' proprietary CB3Q technology provides:

• Near-zero signal distortion
• Excellent noise immunity
• Minimal propagation delay variation
• Break-before-make switching

Applications

Data Communication Systems

Ideal for:

• High-speed data routing in network switches
• Signal selection in telecom equipment
• Bus multiplexing in embedded systems

Consumer Electronics

Common implementations include:

• Display signal routing in smart TVs
• Audio channel selection in home theater systems
• Sensor data multiplexing in IoT devices

Automotive Electronics

Robust enough for:

• Infotainment system signal management
• ADAS sensor data routing
• Vehicle bus communication systems

Design Advantages

Power Efficiency

The 2.3V-3.6V operation makes it perfect for battery-powered applications, with:

• 0.1 A maximum ICC in standby
• 3.6V maximum supply voltage
• TTL-compatible input thresholds

Board Layout Benefits

The TSSOP-16 package offers:

• 50% space savings versus SOIC packages
• Improved thermal performance
• Compatibility with automated assembly

Comparative Analysis

When benchmarked against similar devices, the SN74CB3Q3253PW demonstrates:

Parameter	SN74CB3Q3253PW	Competitor A	Competitor B
On-Resistance	5	8	10
Prop Delay	5ns	7ns	9ns
Voltage Range	2.3-3.6V	3-5V	4.5-5.5V

Implementation Guidelines

PCB Layout Recommendations

• Use 0.1 F decoupling capacitors within 5mm of VCC
• Maintain matched trace lengths for differential signals
• Implement proper ground planes for noise reduction

Thermal Considerations

While the device has excellent thermal characteristics:

• Maximum junction temperature: 150 C
• JA (TSSOP-16): 83.3 C/W
• For continuous high-current operation, consider thermal vias

Conclusion

The SN74CB3Q3253PW sets a new standard for signal switching ICs, combining Texas Instruments' quality with innovative features that address modern design challenges. Its dual 4:1 multiplexing capability, wide voltage range, and compact footprint make it the ideal choice for engineers developing next-generation electronic systems across multiple industries.

For technical documentation, design resources, and purchasing options, visit our product page or contact our technical support team. This active product is available for immediate shipment with full manufacturer warranty support.