Overview
The SN74CB3T3245PW is a high-speed TTL-compatible 8-bit FET bus switch produced by Texas Instruments. This device is designed to support mixed-mode signal operation on all data I/O ports, providing voltage translation that tracks the supply voltage (VCC). It features low ON-state resistance (ron) and minimal propagation delay, making it ideal for applications requiring fast and reliable data transfer.
The SN74CB3T3245PW is part of the '245-type pinout family and is suitable for use in low-power portable equipment. Although this product is currently obsolete and no longer in production, it remains relevant for existing designs and legacy systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | TSSOP (PW) | - |
| Pins | 20 | - |
| Operating Temperature Range | -40 to 85 | °C |
| VCC Operating Range | 2.3 to 3.6 | V |
| ON-State Resistance (ron) | 5 Ω (Typical) | Ω |
| Input/Output Capacitance (Cio(OFF)) | 5 pF (Typical) | pF |
| Power Consumption (ICC) | 40 μA (Maximum) | μA |
| ESD Performance | 2000-V Human-Body Model, 1000-V Charged-Device Model | - |
Key Features
- Standard '245-Type Pinout
- Output Voltage Translation Tracks VCC
- Supports Mixed-Mode Signal Operation on All Data I/O Ports
- 5-V Input Down to 3.3-V Output Level Shift With 3.3-V VCC
- 5-V/3.3-V Input Down to 2.5-V Output Level Shift With 2.5-V VCC
- 5-V-Tolerant I/Os With Device Powered Up or Powered Down
- Bidirectional Data Flow With Near-Zero Propagation Delay
- Low Input/Output Capacitance Minimizes Loading
- Data and Control Inputs Provide Undershoot Clamp Diodes
- Low Power Consumption
- Ioff Supports Partial-Power-Down Mode Operation
- Latch-Up Performance Exceeds 250 mA Per JESD 17
- ESD Performance Tested Per JESD 22
Applications
- Digital Applications: Level Translation, PCI Interface, USB Interface, Memory Interleaving, Bus Isolation
- Low-Power Portable Equipment
- Mixed-Signal and Mixed-Voltage Systems
- Systems Using 5-V TTL, 3.3-V LVTTL, and 2.5-V CMOS Switching Standards
Q & A
- What is the SN74CB3T3245PW used for?
The SN74CB3T3245PW is used as a high-speed TTL-compatible 8-bit FET bus switch, supporting mixed-mode signal operation and voltage translation.
- What are the key features of the SN74CB3T3245PW?
Key features include low ON-state resistance, bidirectional data flow, 5-V tolerant I/Os, and support for partial-power-down mode operation.
- What is the operating temperature range of the SN74CB3T3245PW?
The operating temperature range is -40°C to 85°C.
- What is the VCC operating range of the SN74CB3T3245PW?
The VCC operating range is from 2.3 V to 3.6 V.
- Is the SN74CB3T3245PW still in production?
No, the SN74CB3T3245PW is currently obsolete and no longer in production.
- What types of applications is the SN74CB3T3245PW suitable for?
It is suitable for digital applications such as level translation, PCI interface, USB interface, memory interleaving, and bus isolation, as well as low-power portable equipment.
- What is the typical ON-state resistance (ron) of the SN74CB3T3245PW?
The typical ON-state resistance (ron) is 5 Ω.
- Does the SN74CB3T3245PW support partial-power-down mode operation?
- What is the ESD performance of the SN74CB3T3245PW?
The ESD performance is tested per JESD 22, with a 2000-V Human-Body Model and a 1000-V Charged-Device Model.
- Can the control inputs of the SN74CB3T3245PW be driven by TTL or CMOS outputs?
