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MC74AC245DW
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Product Detailed Parameters
- Description：IC TXRX NON-INVERT 6V 20SOIC
- Series：74AC
- 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：2V ~ 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 MC74AC245DW is an octal bidirectional transceiver with 3-state outputs manufactured by onsemi. It operates within a supply voltage range of 2.0 V to 6.0 V and supports an ambient temperature range from -40°C to +85°C. The device features non-inverting buffers with A and B ports capable of sourcing or sinking 24 mA. Propagation delay is typically 8.5 ns at 5.0 V with a 50 pF load. Input levels are CMOS compatible, and the package is SOIC-20W (Case 751D).
Feature Summary
- Bidirectional data path controlled by Transmit/Receive input
- High current sinking capability of 24 mA at both ports
- Three-state outputs for bus-oriented applications
Applications
- Bus-oriented data transmission systems
- Memory and memory interface control
- Clock drivers and buffer circuits
Procurement Notes
Verify the specific ordering suffix to confirm the package type and shipping quantity. The 'DW' suffix indicates an SOIC-20 Wide package. Confirm RoHS compliance status and lead-free marking requirements against the latest manufacturer documentation before finalizing procurement specifications.
Selection Notes
Select this component for designs requiring high drive current and wide voltage operation. Ensure the application logic levels match the CMOS input thresholds. Consider thermal resistance limits when determining heat dissipation requirements for the SOIC-20 package in enclosed environments.
Part Context
This part belongs to the MC74AC245 family of octal bus transceivers. It shares functional similarities with the MC74ACT245 but differs in input threshold compatibility. The DW variant specifically denotes the SOIC-20 Wide physical footprint, distinguishing it from TSSOP or standard SOIC options.
Replacement Considerations
MC74AC245DTG (TSSOP-20 package)
FAQ
How does the Output Enable pin affect the device state?
When the Output Enable (OE) input is HIGH, both A and B ports are disabled and placed in a High Z condition, regardless of the Transmit/Receive state.
What determines the direction of data flow?
The Transmit/Receive (T/R) input determines direction. An active-HIGH T/R enables data flow from A to B, while an active-LOW T/R enables data flow from B to A.
