Overview
The SN74CB3Q3345PW, produced by Texas Instruments, is a high-bandwidth FET bus switch designed for low-voltage applications. This 8-bit bus switch is optimized for high-bandwidth requirements, making it ideal for broadband communications, networking, and data-intensive computing systems. The device utilizes a charge pump to elevate the gate voltage of the pass transistor, resulting in low and flat ON-state resistance (ron) and minimal propagation delay. It also features low data I/O capacitance to minimize capacitive loading and signal distortion on the data bus.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| Supply Voltage (VCC) | 2.3 | 3.6 | V |
| High-Level Control Input Voltage (VIH) | 2 | 5.5 | V |
| Low-Level Control Input Voltage (VIL) | 0 | 0.8 | V |
| Data Input/Output Voltage (VI/O) | 0 | 5.5 | V |
| Operating Free-Air Temperature (TA) | -40 | 85 | °C |
| ON-State Resistance (ron) at VCC = 3.3 V, TA = 25°C, IO = -15 mA | - | - | Ω (Typical: ~2 Ω) |
| Switching Frequency | - | - | MHz (Dependent on OE/OE switching) |
Key Features
- High-bandwidth FET bus switch with low and flat ON-state resistance (ron) for minimal propagation delay.
- Rail-to-rail switching on the data input/output (I/O) ports.
- Low data I/O capacitance to minimize capacitive loading and signal distortion.
- Two output-enable (OE, OE) inputs for control.
- Supports 2.5-V and 3.3-V supply voltages.
- Available in various package types including TSSOP, TVSOP, and VQFN.
Applications
- Broadband communications systems.
- Networking equipment.
- Data-intensive computing systems.
- High-speed data switching applications.
Q & A
- What is the primary function of the SN74CB3Q3345PW? The SN74CB3Q3345PW is an 8-bit FET bus switch designed for high-bandwidth applications, providing low and flat ON-state resistance and minimal propagation delay.
- What are the supported supply voltage ranges for the SN74CB3Q3345PW? The device supports supply voltages from 2.3 V to 3.6 V.
- What is the typical ON-state resistance (ron) of the SN74CB3Q3345PW? The typical ON-state resistance is around 2 Ω at VCC = 3.3 V, TA = 25°C, and IO = -15 mA.
- How many output-enable inputs does the SN74CB3Q3345PW have? The device has two output-enable (OE, OE) inputs.
- What are the typical applications for the SN74CB3Q3345PW? It is typically used in broadband communications, networking, and data-intensive computing systems.
- What package types are available for the SN74CB3Q3345PW? The device is available in TSSOP, TVSOP, and VQFN package types.
- What is the operating temperature range for the SN74CB3Q3345PW? The operating free-air temperature range is from -40°C to 85°C.
- How does the SN74CB3Q3345PW minimize signal distortion? It features low data I/O capacitance to minimize capacitive loading and signal distortion on the data bus.
- What is the significance of the charge pump in the SN74CB3Q3345PW? The charge pump elevates the gate voltage of the pass transistor, resulting in low and flat ON-state resistance.
- Can the SN74CB3Q3345PW be used in high-speed data switching applications? Yes, it is designed to support high-speed data switching due to its high-bandwidth characteristics.
