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| Product attributes | Property Value |
| Manufacturer | onsemi |
| Product Series | 74LCX |
| Packaging | Bulk | |
| Part Status | Active |
| Logic Type | Transceiver, Non-Inverting |
| Number of Elements | 1 |
| Number of Bits per Element | 8 |
| Input Type | - |
| Output Type | 3-State |
| Current - Output High, Low | 24mA, 24mA |
| Voltage - Supply | 2V ~ 5.5V |
| Operating Temperature | -55°C ~ 125°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 20-SOIC (0.209", 5.30mm Width) |
| Supplier Device Package | SOEIAJ-20 |
| ROHS |  |
The MC74LCX245MEL from onsemi is an octal (8-bit) non-inverting transceiver, part of the 74LCX logic family. It is designed for bidirectional data communication between two buses, with a direction control pin and 3-State outputs for bus isolation. The device operates from 2V to 5.5V, making it compatible with both 3.3V and 5V logic systems. Each output can drive up to 24mA, ensuring strong signal integrity. Housed in a 20-pin SOIC package, this transceiver is ideal for memory interfacing, data acquisition, and industrial control applications where bidirectional data flow is required.
- Bidirectional Data Flow: Supports both read and write operations with a single direction control pin, simplifying bus design.
- Wide 2V to 5.5V Supply Range: Compatible with both 3.3V and 5V systems, enabling mixed-voltage interfacing.
- 5V Tolerant Inputs: Allows safe interfacing with 5V logic even when powered at 3.3V, protecting the device.
- Wide Temperature Range (-55°C to 125°C): Suitable for harsh automotive and industrial environments.
Bidirectional Bus Transceiver
The MC74LCX245MEL is ideal for connecting two bidirectional data buses, such as between a microcontroller and a memory device. The direction control pin (DIR) determines the data flow, while the output enable (OE) pin can place the outputs in a high-impedance state for bus isolation.
Level Shifting Between 3.3V and 5V Systems
With a supply range of 2V to 5.5V, this transceiver can be powered from 3.3V while interfacing with 5V logic. The inputs are 5V tolerant, allowing safe communication between different voltage domains.
Data Acquisition Systems
In data acquisition systems, this transceiver can buffer data from multiple sensors or ADCs to a central processor. The 3-State outputs allow multiple devices to share the same data bus without conflict.
Industrial Control Backplanes
In industrial control systems, the MC74LCX245MEL can be used in backplane communication, where multiple cards need to exchange data. The transceiver provides the necessary drive strength and isolation for reliable operation.
Memory Interfacing
This transceiver is well-suited for interfacing a processor with SRAM or other memory devices. The bidirectional capability allows for both read and write operations, while the 3-State outputs prevent bus contention.
Automotive Infotainment Systems
With a wide temperature range of -55°C to 125°C, this device can be used in automotive infotainment systems to buffer data between the main processor and display or audio modules, ensuring reliable communication in harsh conditions.
- Q: What is the logic family of the MC74LCX245MEL?
- A: It belongs to the 74LCX (Low-Voltage CMOS) family, designed for high-speed, low-power operation.
- Q: What is the function of this IC?
- A: It is a non-inverting transceiver, allowing bidirectional data flow between two buses.
- Q: How many channels does it have?
- A: It has 8 channels (1 byte), with a single direction control pin.
- Q: What is the output type?
- A: The outputs are 3-State, enabling connection to shared buses.
- Q: What is the operating voltage range?
- A: It operates from 2V to 5.5V, making it compatible with both 3.3V and 5V systems.
- Q: What package is available?
- A: It is available in a 20-pin SOIC package (5.30mm width).
MC74LCX245MEL.pdf
- Q: What is the logic family of the MC74LCX245MEL?
- A: It belongs to the 74LCX (Low-Voltage CMOS) family, designed for high-speed, low-power operation.
- Q: What is the function of this IC?
- A: It is a non-inverting transceiver, allowing bidirectional data flow between two buses.
- Q: How many channels does it have?
- A: It has 8 channels (1 byte), with a single direction control pin.
- Q: What is the output type?
- A: The outputs are 3-State, enabling connection to shared buses.
- Q: What is the operating voltage range?
- A: It operates from 2V to 5.5V, making it compatible with both 3.3V and 5V systems.
- Q: What package is available?
- A: It is available in a 20-pin SOIC package (5.30mm width).