Overview
The MC74LVXC3245DTG is a 24-pin dual-supply, octal configurable voltage interface transceiver produced by onsemi. It is particularly suited for PCMCIA and other real-time configurable I/O applications. The device features two separate power supply pins, VCCA and VCCB, which allow it to interface between 3V and 3V/5V buses. The VCCA pin is dedicated to a 3V supply level, while the VCCB pin can accept a supply level ranging from 3V to 5V. This flexibility enables the B port to track the VCCB supply level, making it versatile for various voltage requirements.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | TSSOP-24 | |
| Supply Voltage (VCCA) | 2.3 to 3.6 | V |
| Supply Voltage (VCCB) | 2.3 to 5.5 | V |
| Propagation Delay (A to B) | 1.0 to 8.5 | ns |
| Output Source/Sink Current | ±24 | mA |
| Operating Temperature Range | -40 to +85 | °C |
| Storage Temperature Range | -65 to +150 | °C |
Key Features
- Bidirectional interface between 3V and 3V/5V buses
- Control inputs compatible with TTL level
- Outputs source/sink up to 24mA
- Guaranteed simultaneous switching noise level and dynamic threshold performance
- Available in SOIC and TSSOP packages
- Flexible VCCB operating range
- Allows B port and VCCB to float simultaneously when OE is High
- Functionally compatible with the 74 Series 245
- Pb-Free packages are available and RoHS compliant
Applications
The MC74LVXC3245DTG is especially well-suited for PCMCIA and other real-time configurable I/O applications. It is ideal for systems that require data transfer between different voltage levels, such as between a 3V host system and 3V or 5V card slots. This device is also useful in applications where the ability to insert and remove cards during normal operation is necessary, such as in PCMCIA sockets.
Q & A
- What is the primary function of the MC74LVXC3245DTG?
The MC74LVXC3245DTG is a dual-supply, octal configurable voltage interface transceiver that enables bidirectional data transfer between 3V and 3V/5V buses.
- What are the supply voltage ranges for VCCA and VCCB?
VCCA operates from 2.3V to 3.6V, and VCCB operates from 2.3V to 5.5V.
- What is the maximum output source/sink current of the MC74LVXC3245DTG?
The device can source or sink up to 24mA.
- What are the available package types for the MC74LVXC3245DTG?
The device is available in SOIC and TSSOP packages.
- Can the B port and VCCB float simultaneously when OE is High?
- Is the MC74LVXC3245DTG compatible with the 74 Series 245?
- What is the operating temperature range of the MC74LVXC3245DTG?
- Is the MC74LVXC3245DTG Pb-Free and RoHS compliant?
- How does the Transmit/Receive (T/R) input determine data flow?
The T/R input determines the direction of data flow; Transmit (active-High) enables data from the A port to the B port, and Receive (active-Low) enables data from the B port to the A port.
- What is the significance of the VCCA and VCCB pins in the MC74LVXC3245DTG?
The VCCA pin is dedicated to a 3V supply level, while the VCCB pin can accept a supply level ranging from 3V to 5V, allowing the B port to track the VCCB supply level.
