SN74CB3Q3245PWG Texas Instruments In Stock
SN74CB3Q3245PWG is a 8-bit bidirectional bus switch with 3-state outputs by Texas Instruments. Key specs: 3.3V supply, 8 channels, low ON-resistance bus switch in TSSOP-24 package. From competitive pricing, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74CB3Q3245PWG?
- 8-bit bidirectional bus switch with 3-state outputs enabling full-duplex data bus routing in 3.3V logic systems
- Low ON-resistance channel design minimizing signal attenuation and supporting high-speed bus switching applications
- TSSOP-24 package with 24 pins providing 8 switch channels in a compact SMD footprint for dense PCB layouts
- 3.3V supply voltage compatibility making it a direct fit for PCI, memory bus, and processor interface applications
What is SN74CB3Q3245PWG used for?
The SN74CB3Q3245PWG is used in memory bus expansion, PCI bus buffering, and processor-to-peripheral switching in desktop computers, workstations, and embedded systems that operate at 3.3V logic levels. Its 8-bit width and bidirectional switching capability make it ideal for multiplexing two data buses onto a single processor port, reducing PCB complexity in FPGA and DSP designs. The device also serves well in test equipment and data acquisition systems where multiple signal paths must be selectively connected.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
What are equivalent replacements for SN74CB3Q3245PWG?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many bidirectional switching channels does the SN74CB3Q3245PWG provide, and what supply voltage does it require?
The SN74CB3Q3245PWG provides 8 bidirectional channels in a single package, allowing full-byte-wide bus switching in one IC. It operates from a 3.3V supply, making it compatible with standard LVTTL and LVCMOS logic systems. The 3-state output control allows the device to be disabled and removed from the bus when not needed.
In a PCIe or parallel memory bus design, how does the SN74CB3Q3245PWG help manage signal integrity across 8 data lines?
The SN74CB3Q3245PWG's low ON-resistance design ensures minimal voltage drop and signal distortion when switching 8 data lines simultaneously. Its 3-state outputs prevent bus contention by high-impedancing all channels when the output enable is deasserted. This makes it ideal for point-to-point parallel bus connections where clean signal transitions on all 8 channels at once are critical.
What package is the SN74CB3Q3245PWG available in, and how does it compare in size to a DIP-24 alternative?
The SN74CB3Q3245PWG is available in a TSSOP-24 package with 24 pins at 0.635 mm pitch. Compared to a through-hole DIP-24 package which is roughly 31 mm long, the TSSOP-24 body is approximately 7.8 mm long — about 4x smaller in board footprint. This size reduction is significant in high-density PCB designs where space is a primary constraint.
When is the SN74CB3Q3245PWG preferred over a 74CBT3245 for a new board design?
The SN74CB3Q3245PWG belongs to the CB3Q sub-family which targets quieter switching with reduced ground bounce on 8 simultaneous channels compared to the older CBT3245. For designs with strict EMI budgets or tightly coupled bus routing, the CB3Q variant's controlled switching transitions provide better signal quality. Both parts share the same 8-bit bidirectional architecture, making replacement straightforward without layout changes.
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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.
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