SN74CB3Q3253DBQR Texas Instruments In Stock
SN74CB3Q3253DBQR is a dual 4-to-1 FET bus switch multiplexer/demultiplexer by Texas Instruments. Key specs: 2 independent 4:1 channels, low ON-state resistance (~5Ω), 3.3V operation, QSOP-16 package. From $0.39, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- Price
- From $0.3940(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74CB3Q3253DBQR?
- Dual 4-to-1 FET bus switch with two independent channels for flexible signal routing
- Ultra-low ON-state resistance (~5Ω) minimizes signal attenuation and voltage drop
- Supports 3.3V bus switching with VCC range of 2.3V to 3.6V
- Bidirectional data flow with no direction control pin required
- QSOP-16 package enables compact PCB layout for space-constrained designs
- Bus-hold circuitry on data inputs prevents floating inputs
What is SN74CB3Q3253DBQR used for?
The SN74CB3Q3253DBQR is widely used in portable electronics, laptops, and servers for bus expansion and signal multiplexing between processors, memory modules, and peripherals. Its low ON-state resistance and bidirectional capability make it ideal for high-speed data buses, I2C/SPI routing, and multi-channel test equipment. It is also commonly deployed in automotive infotainment and industrial control systems requiring reliable 3.3V signal switching.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
What are equivalent replacements for SN74CB3Q3253DBQR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the ON-state resistance of the SN74CB3Q3253DBQR?
The SN74CB3Q3253DBQR has a typical ON-state resistance of approximately 5Ω at VCC = 3.3V and VIN = 1.5V. This low resistance minimizes signal attenuation and power dissipation, making it suitable for high-speed digital bus applications.
What voltage range does the SN74CB3Q3253DBQR support?
The SN74CB3Q3253DBQR operates with a VCC supply voltage range of 2.3V to 3.6V, with typical operation at 3.3V. The input/output voltage range spans 0V to VCC, making it compatible with standard 3.3V logic systems used in modern processors and FPGAs.
Can the SN74CB3Q3253DBQR be used for bidirectional signal switching?
Yes, the SN74CB3Q3253DBQR supports fully bidirectional data flow through its FET switch architecture. No direction control pin is required, which simplifies board design. This makes it ideal for I2C buses, memory interfaces, and other bidirectional communication lines.
What package does the SN74CB3Q3253DBQR come in?
The SN74CB3Q3253DBQR is housed in a 16-pin QSOP (Quarter-Size Outline Package) with a body width of 3.9mm. The compact QSOP package is well-suited for space-constrained applications such as laptops, mobile devices, and dense PCB designs.
What are common applications for the SN74CB3Q3253DBQR?
Common applications include bus multiplexing in servers and workstations, signal routing in portable electronics, I2C and SPI channel expansion, memory bus switching in DDR systems, and multi-channel test and measurement equipment. Its dual 4-to-1 architecture allows two independent signals to be routed from one of four sources simultaneously.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.2500 | $1.25 |
| 10+ | $0.5600 | $5.60 |
| 25+ | $0.5040 | $12.60 |
| 100+ | $0.4420 | $44.20 |
| 250+ | $0.4118 | $102.95 |
| 500+ | $0.3940 | $196.99 |
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