Overview
The 74CBTLV3125PWRG4, manufactured by Texas Instruments, is a low-voltage quadruple FET bus switch. This device is designed for use in 3.3-V systems and features four independent SPST (Single-Pole Single-Throw) switches. Each switch can be controlled independently, allowing for flexible bus switching configurations. The device is fully specified for partial-power-down applications, ensuring that it can handle scenarios where some parts of the system are powered down while others remain active.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage | 2.3 | - | 3.6 | V |
| VIH High-Level Control Input Voltage (VCC = 2.3 V to 2.7 V) | 1.7 | - | - | V |
| VIH High-Level Control Input Voltage (VCC = 2.7 V to 3.6 V) | 2 | - | - | V |
| VIL Low-Level Control Input Voltage (VCC = 2.3 V to 2.7 V) | 0.7 | - | - | V |
| VIL Low-Level Control Input Voltage (VCC = 2.7 V to 3.6 V) | 0.8 | - | - | V |
| TA Operating Free-Air Temperature | -40 | - | 85 | °C |
| Ioff (VCC = 0, VI or VO = 0 to 3.6 V) | - | - | 10 µA | µA |
| ICC (VCC = 3.6 V, IO = 0, VI = VCC or GND) | - | - | 10 µA | µA |
| Package Type | - | - | 14-TSSOP | - |
Key Features
- Four independent SPST (Single-Pole Single-Throw) FET bus switches.
- Powered-off protection with isolation during power-off.
- Low-voltage operation: 2.3 V to 3.6 V supply voltage range.
- High-impedance state during power-up or power-down when OE is tied to VCC through a pull-up resistor.
- Ioff feature to prevent backflow current when the device is powered down.
- Control inputs compatible with TTL and CMOS logic levels.
Applications
- Bus switching and multiplexing in digital systems.
- Data transmission and signal routing in communication systems.
- Partial-power-down applications where some parts of the system need to remain active while others are powered down.
- Low-voltage digital circuits requiring high-speed switching.
Q & A
- What is the primary function of the 74CBTLV3125PWRG4?
The primary function is to act as a quadruple FET bus switch, allowing for the switching of four independent signal paths.
- What is the supply voltage range for this device?
The supply voltage range is from 2.3 V to 3.6 V.
- How does the device handle power-off scenarios?
The device features powered-off protection with isolation during power-off, preventing backflow current.
- What is the purpose of the Ioff feature?
The Ioff feature ensures that damaging current will not backflow through the device when it is powered down.
- What type of package is the 74CBTLV3125PWRG4 available in?
The device is available in a 14-TSSOP package.
- How are the control inputs configured?
Control inputs are compatible with TTL and CMOS logic levels and must be held at VCC or GND to ensure proper device operation.
- What is the operating temperature range for this device?
The operating temperature range is from -40°C to 85°C.
- Can the device be used in partial-power-down applications?
Yes, the device is fully specified for partial-power-down applications.
- How do you ensure the high-impedance state during power-up or power-down?
By tying the OE input to VCC through a pull-up resistor.
- What are some common applications for this device?
Bus switching, multiplexing, data transmission, and signal routing in digital and communication systems.
