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MC74LVX245DWR2
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Product Detailed Parameters
- Description：IC TXRX NON-INVERT 3.6V 20SOIC
- Series：74LVX
- Mfr：onsemi
- Package：Tape & Reel (TR)
- 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：4mA, 4mA
- Voltage - Supply：2V ~ 3.6V
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：20-SOIC (0.295", 7.50mm Width)
- Supplier Device Package：20-SOIC
- Grade：-
- Qualification：-
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Overview
The MC74LVX245DWR2G is an octal bus transceiver manufactured by onsemi, designed for two-way asynchronous communication between data buses. It operates within a supply voltage range of 2.0 V to 3.6 V and features 5 V-tolerant inputs. The device utilizes advanced high-speed CMOS technology, providing balanced propagation delays with typical values of 4.7 ns at 3.3 V. It includes power-down protection on inputs and offers low noise performance with a maximum dynamic VOL of 0.8 V. The component is housed in a 20-lead SOIC package.
Feature Summary
- Provides bidirectional data transmission controlled by the T/R input signal level.
- Features 5 V-tolerant inputs allowing direct interfacing with 5 V systems.
- Includes output enable (OE) functionality to isolate buses effectively.
Applications
- Two-way asynchronous communication between data buses
- Memory and memory mapping applications
- Clock drivers and buffered oscillators
Procurement Notes
Verify the specific ordering suffix 'R2G' corresponds to the SOIC-20 tape and reel packaging configuration. Confirm RoHS compliance status and moisture sensitivity level requirements prior to assembly. Ensure static discharge precautions are observed during handling due to the CMOS construction.
Selection Notes
Select this component when designing systems requiring octal wide-bus interfaces with mixed voltage domains. The 5 V tolerance on inputs simplifies integration with legacy 5 V logic without additional level shifting circuitry. Consider the 2.0 V minimum supply voltage for low-power portable applications.
Part Context
This part belongs to the MC74LVX series of advanced high-speed CMOS logic devices. The LVX family is characterized by operation from 2.0 V to 3.6 V supplies, offering performance comparable to standard 5 V logic while consuming significantly less power. It serves as a bridge between lower voltage modern systems and older 5 V peripherals.
Replacement Considerations
MC74LVX245DTR2G
FAQ
Can the MC74LVX245 interface 5.0 V systems directly to 3.0 V systems?
No. A parasitic diode exists between the bus and VCC terminals, preventing direct 5.0 V to 3.0 V system interfacing despite the 5 V tolerant inputs.
What determines the direction of data transmission?
The direction is determined by the logic level applied to the Transmit/Receive (T/R) input pin.
