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SN74CBT3245A from TI,Texas Instruments

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SN74CBT3245A

Manufacturer: TI

Octal FET Bus Switch

Partnumber Manufacturer Quantity Availability
SN74CBT3245A TI 581 In Stock

Description and Introduction

Octal FET Bus Switch The SN74CBT3245A is an 8-bit bus switch manufactured by Texas Instruments (TI). Here are its specifications, descriptions, and features:

### **Specifications:**
- **Technology Family:** CBT (Crossbar Technology)  
- **Number of Channels:** 8  
- **Supply Voltage Range:** 4V to 5.5V  
- **On-State Resistance (Ron):** 5Ω (typical)  
- **Bandwidth:** 200 MHz  
- **Propagation Delay:** 0.25 ns (typical)  
- **Input/Output Capacitance (CI/O):** 10 pF (typical)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Options:** TSSOP (20-pin), TVSOP (20-pin)  

### **Descriptions:**
- The SN74CBT3245A is a high-speed, low-power, 8-bit bus switch designed for multiplexing/demultiplexing signals in digital systems.  
- It provides bidirectional switching with minimal propagation delay and low on-state resistance.  
- The device supports both 3.3V and 5V logic levels, making it suitable for mixed-voltage applications.  
- It features an output enable (OE) input for disabling the switch when not in use.  

### **Features:**
- **Low On-State Resistance (5Ω typ.)** for minimal signal distortion.  
- **Bidirectional Voltage Translation** (4V to 5.5V).  
- **Fast Switching Speed** (200 MHz bandwidth).  
- **Low Power Consumption** (no DC current path when disabled).  
- **5V Tolerant I/Os** for interfacing with higher-voltage systems.  
- **Output Enable (OE) Control** for disabling outputs when needed.  
- **ESD Protection:** Exceeds 2000V (HBM) per JESD22-A114.  

This device is commonly used in data communication, signal routing, and level-shifting applications.

Application Scenarios & Design Considerations

Octal FET Bus Switch

Alternative Part Number

  • PI3B3245Q --: Pin-compatible 8-bit bus switch with similar 5V-tolerant bidirectional switching, direct functional replacement for the SN74CBT3245A.
  • QS3245SO --: Equivalent 8-bit bus switch with low on-resistance and similar control logic, widely used as a drop-in substitute in bus-switch applications.
  • CBT3245APW --: Same CBT3245A bus-switch function from an alternate vendor, matching pinout and electrical characteristics for cross-reference replacement.

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