Overview
The SN74CB3Q3251PW, produced by Texas Instruments, is a high-bandwidth FET bus switch designed to optimize interface solutions for high-bandwidth applications. This device is a 1-of-8 multiplexer/demultiplexer with a single output-enable (OE) input and select inputs (S0, S1, S2) that control the data path. It supports bidirectional data flow between ports when OE is low and enters a high-impedance state when OE is high. The SN74CB3Q3251PW is particularly suited for broadband communications, networking, and data-intensive computing systems due to its low and flat ON-state resistance and minimal propagation delay.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage Range (VCC) | -0.5 | 4.6 | V | |
| Control Input Voltage Range (VIN) | -0.5 | 7 | V | |
| Switch I/O Voltage Range (VI/O) | -0.5 | 7 | V | |
| Operating Temperature Range | -40 | 85 | °C | |
| ON-State Switch Current (II/O) | ±64 | mA | ||
| Package Type | 16-TSSOP | |||
| Package Thermal Impedance (θJA) | 90 (DBQ), 120 (DGV) | °C/W |
Key Features
- High-bandwidth data path (up to 500 MHz)
- Low and flat ON-state resistance (ron) characteristics over the operating range
- Low input/output capacitance to minimize capacitive loading and signal distortion
- Bidirectional data flow with near-zero propagation delay
- Supports both digital and analog applications
- 5-V tolerant I/Os with the device powered up or powered down
- ESD performance tested per JESD 22 (2000-V Human-Body Model, 1000-V Charged-Device Model)
- Full specification for partial-power-down applications using Ioff circuitry
Applications
- Broadband communications
- Networking
- Data-intensive computing systems
- PCI interface
- Differential signal interface
- Memory interleaving
- Bus isolation
- Low-distortion signal gating
Q & A
- What is the primary function of the SN74CB3Q3251PW?
The SN74CB3Q3251PW is a 1-of-8 FET multiplexer/demultiplexer with a single output-enable input, designed for high-bandwidth applications.
- What is the operating temperature range of the SN74CB3Q3251PW?
The operating temperature range is -40°C to 85°C.
- What is the maximum ON-state switch current?
The maximum ON-state switch current is ±64 mA.
- What type of package does the SN74CB3Q3251PW come in?
The device comes in a 16-TSSOP package.
- Is the SN74CB3Q3251PW ESD protected?
Yes, it is ESD protected, tested per JESD 22 (2000-V Human-Body Model, 1000-V Charged-Device Model).
- What are the key applications of the SN74CB3Q3251PW?
Key applications include broadband communications, networking, data-intensive computing systems, PCI interface, differential signal interface, memory interleaving, and bus isolation.
- How does the SN74CB3Q3251PW handle partial-power-down applications?
The device is fully specified for partial-power-down applications using Ioff circuitry, which prevents damaging current backflow when the device is powered down.
- What is the significance of low and flat ON-state resistance in the SN74CB3Q3251PW?
The low and flat ON-state resistance minimizes propagation delay and supports rail-to-rail switching on the data input/output ports.
- Is the SN74CB3Q3251PW lead-free and RoHS compliant?
Yes, the device is lead-free and RoHS compliant.
- How does the SN74CB3Q3251PW minimize capacitive loading and signal distortion?
The device features low data I/O capacitance to minimize capacitive loading and signal distortion on the data bus.
