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MC74ACT245DW
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Product Detailed Parameters
- Description：IC TXRX NON-INVERT 5.5V 20SOIC
- Series：74ACT
- Mfr：onsemi
- Package：Tube
- 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：4.5V ~ 5.5V
- 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 MC74ACT245DW is an octal bidirectional transceiver with 3-state outputs manufactured by onsemi. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a maximum quiescent supply current of 80 µA at 5.5 V. The device provides a low-level output current of 24 mA and a high-level output current of -24 mA. Propagation delay ranges from 1.5 ns to 9.0 ns depending on load conditions and temperature. It features TTL-compatible inputs and functions as non-inverting buffers for bus-oriented applications.
Feature Summary
- Bidirectional data path controlled by Transmit/Receive input
- TTL compatible inputs for ACT logic series
- High current sinking capability at both A and B ports
Applications
- Bus-oriented applications requiring bidirectional data transfer
- Memory and memory interface systems
- Digital signal routing in industrial control environments
Procurement Notes
Verify the specific suffix 'DW' corresponds to the SOIC-20W package when ordering. Confirm RoHS compliance status via the manufacturer's official documentation, as packaging variations may exist. Ensure the procurement channel sources directly from authorized distributors to guarantee component authenticity and traceability.
Selection Notes
Select this component for designs requiring robust 24 mA drive capability on an octal bus. The ACT logic family ensures compatibility with TTL input levels while maintaining CMOS output characteristics. Verify that the operating temperature range of -40°C to +85°C meets the environmental requirements of the target application.
Part Context
This part belongs to the MC74AC245/74ACT245 family of octal bidirectional transceivers. It shares functional similarities with other members of the series but is distinguished by its ACT logic specifications, specifically the TTL-compatible input thresholds. The device is designed for high-speed digital communication buses.
Replacement Considerations
MC74ACT245DTG (TSSOP-20 package variant)
FAQ
What determines the direction of data flow?
The Transmit/Receive (T/R) input determines the direction. Active-HIGH enables data from A to B, while active-LOW enables data from B to A.
How does the Output Enable input function?
When the Output Enable (OE) input is HIGH, both A and B ports are disabled and placed in a High Z state.
