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| Product attributes | Property Value |
| Manufacturer | Fairchild Semiconductor |
| Product Series | 74LCXR |
| 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 | 12mA, 12mA |
| Voltage - Supply | 2V ~ 3.6V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 20-TSSOP |
| ROHS |  |
The 74LCXR2245MTC is a high-performance non-inverting transceiver from Fairchild Semiconductor's 74LCXR logic family. Operating from a 2V to 3.6V supply, this single-channel device features 3-State outputs and 12mA sink/source current capability. Housed in a compact 20-TSSOP package, it is ideal for bidirectional bus interfacing, level shifting, and signal buffering in low-voltage 3.3V systems. Its wide operating temperature range of -40°C to 85°C makes it suitable for industrial and automotive applications.
- Wide 2V to 3.6V Supply Range: Compatible with both 2.5V and 3.3V logic systems, simplifying mixed-voltage design.
- 3-State Outputs: Enables bus multiplexing and bidirectional data flow, reducing the need for external isolation components.
- 12mA Output Drive: Provides sufficient current for driving multiple loads or long PCB traces, improving signal integrity.
- Compact 20-TSSOP Package: Saves board space in space-constrained designs, ideal for portable and high-density applications.
- Extended Temperature Range (-40°C to 85°C): Ensures reliable operation in demanding industrial environments.
Bidirectional Bus Interfacing
Use the 74LCXR2245MTC to interface between two 3.3V data buses in networking equipment. Its 3-State outputs and non-inverting transceiver function allow seamless bidirectional data flow without signal inversion, simplifying firmware and hardware design.
Level Shifting in Mixed-Voltage Systems
In systems with both 2.5V and 3.3V logic, this transceiver can act as a level shifter. The 2V to 3.6V supply range ensures compatibility with both voltage domains, enabling reliable communication between different logic levels.
Signal Buffering for Long PCB Traces
When driving long traces or multiple loads on a PCB, the 12mA output current helps maintain signal integrity. The buffer/transceiver function isolates the source from the capacitive load, reducing signal degradation and crosstalk.
Memory and Peripheral Expansion
In microcontroller systems, this IC can buffer address or data lines when expanding memory or adding peripherals. The 3-State outputs allow multiple devices to share the same bus, with the transceiver enabling read/write operations.
Industrial Control I/O Modules
For industrial PLCs and control modules, the 74LCXR2245MTC provides robust signal conditioning between the controller and field I/O. Its wide temperature range (-40°C to 85°C) ensures reliable operation in harsh environments.
Portable Battery-Powered Devices
In battery-operated equipment, the low-voltage 2V to 3.6V operation minimizes power consumption. The transceiver's high-impedance 3-State mode further reduces power when the bus is idle, extending battery life.
- Q: What is the logic family of the 74LCXR2245MTC?
- A: It belongs to the 74LCXR low-voltage CMOS logic family, designed for 2V to 3.6V operation.
- Q: What is the function of this IC?
- A: It is a non-inverting transceiver with 1 channel, enabling bidirectional data flow between two buses.
- Q: What type of output does it have?
- A: It features 3-State outputs, allowing the device to be disconnected from the bus for multiplexing or bidirectional operation.
- Q: What is the operating voltage range?
- A: The supply voltage range is 2V to 3.6V, making it suitable for low-voltage 2.5V and 3.3V systems.
- Q: What is the package type?
- A: It is available in a 20-TSSOP (Thin Shrink Small Outline Package) with a 4.40mm width.
- Q: What is the output current capability?
- A: It can source and sink 12mA of current per channel.
74LCXR2245MTC.pdf
- Q: What is the logic family of the 74LCXR2245MTC?
- A: It belongs to the 74LCXR low-voltage CMOS logic family, designed for 2V to 3.6V operation.
- Q: What is the function of this IC?
- A: It is a non-inverting transceiver with 1 channel, enabling bidirectional data flow between two buses.
- Q: What type of output does it have?
- A: It features 3-State outputs, allowing the device to be disconnected from the bus for multiplexing or bidirectional operation.
- Q: What is the operating voltage range?
- A: The supply voltage range is 2V to 3.6V, making it suitable for low-voltage 2.5V and 3.3V systems.
- Q: What is the package type?
- A: It is available in a 20-TSSOP (Thin Shrink Small Outline Package) with a 4.40mm width.
- Q: What is the output current capability?
- A: It can source and sink 12mA of current per channel.