Overview
The MC74LVXC3245DTRG, produced by onsemi, is a configurable dual-supply, octal transceiver designed for applications requiring voltage interface between 3.0 V and 3.0 V/5.0 V buses. This device is particularly well-suited for PCMCIA and other real-time configurable I/O applications. It features a 24-pin package and supports both SOIC and TSSOP packaging options. The device is designed to operate with a VCCA pin at 3.0 V and a VCCB pin that can range from 3.0 V to 5.0 V, allowing the B port to track the VCCB supply level. This flexibility makes it ideal for low-power notebook designs and other applications where voltage compatibility is crucial.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| DC Supply Voltage (VCCA, VCCB) | -0.5 | 7.0 | V | |
| DC Input Voltage (OE, T/R) | -0.5 | VCCA + 0.5 | V | |
| DC Input/Output Voltage (An, Bn) | -0.5 | VCCA + 0.5 / VCCB + 0.5 | V | |
| Operating Free-Air Temperature | -40 | 85 | °C | |
| Propagation Delay A to B | 1.0 | 4.8 | 9.0 | ns |
| Output Enable Time OE to B | 1.0 | 4.7 | 9.0 | ns |
| Input Capacitance | 4.5 | pF | ||
| Input/Output Capacitance | 10 | pF |
Key Features
- Bidirectional interface between 3.0 V and 3.0 V/5.0 V buses
- Control inputs compatible with TTL level
- Outputs source/sink up to 24 mA
- 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 and RoHS compliant
Applications
The MC74LVXC3245DTRG is particularly suited for PCMCIA and other real-time configurable I/O applications. It is ideal for use in low-power notebook designs, where it can meet all PCMCIA I/O voltage requirements at both 5.0 V and 3.3 V operation. Additionally, it can be used in any system requiring voltage translation between different voltage levels, such as in embedded systems, mobile devices, and other applications where voltage compatibility is essential.
Q & A
- What is the primary function of the MC74LVXC3245DTRG?
The MC74LVXC3245DTRG is a configurable dual-supply, octal transceiver designed for bidirectional voltage interface between 3.0 V and 3.0 V/5.0 V buses.
- What are the supported package types for the MC74LVXC3245DTRG?
The device is available in both SOIC and TSSOP packages.
- What is the operating voltage range for VCCA and VCCB?
VCCA operates at 3.0 V, while VCCB can range from 3.0 V to 5.0 V.
- How does the device handle output enable and disable times?
The device has specified output enable and disable times, with tPZL and tPZH ranging from 1.0 ns to 10.0 ns depending on the configuration.
- Is the MC74LVXC3245DTRG compatible with PCMCIA standards?
Yes, the device meets all PCMCIA I/O voltage requirements at both 5.0 V and 3.3 V operation.
- What is the maximum output current of the MC74LVXC3245DTRG?
The outputs can source/sink up to 24 mA.
- Is the MC74LVXC3245DTRG Pb-free and RoHS compliant?
Yes, the device is Pb-free and RoHS compliant.
- What is the operating temperature range for the MC74LVXC3245DTRG?
The device operates within a temperature range of -40°C to 85°C.
- How does the device handle input and output capacitance?
The input capacitance is typically 4.5 pF, and the input/output capacitance is typically 10 pF.
- Can the B port and VCCB float simultaneously when OE is High?
Yes, the device allows the B port and VCCB to float simultaneously when OE is High.
