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MC74ACT540DT
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Product Detailed Parameters
- Description：IC INVERTER 8-INPUT 20TSSOP
- Series：*
- Mfr：onsemi
- Package：Bulk
- Logic Type：-
- Number of Elements：-
- Number of Bits per Element：-
- Input Type：-
- Output Type：-
- Current - Output High, Low：-
- Voltage - Supply：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The MC74ACT540DT is an octal buffer and line driver from the ACT logic series, manufactured by onsemi. It features eight non-inverting inputs with three-state outputs housed in a 20-pin TSSOP package. The device operates within a supply voltage range of 4.5 V to 5.5 V. Key electrical parameters include a maximum propagation delay of 7.5 ns at 5 V, high-level output current of -24 mA, and low-level output current of 24 mA. Static current is limited to 8 µA, with a maximum power dissipation of 200 mW. It supports industrial operating temperatures from -40 °C to +85 °C.
Feature Summary
- Features three-state outputs that allow isolation from the bus when not enabled.
- Provides TTL-compatible input levels for direct interfacing with standard logic circuits.
- Utilizes a through-bone architecture with inputs and outputs on opposite sides for optimized PCB layout.
Applications
- Memory address drivers
- Clock signal distribution
- Bus-oriented transceivers
Procurement Notes
Verify the specific suffix 'DT' corresponds to the TSSOP-20 package and tube packaging configuration as listed in official datasheets. Confirm RoHS compliance status and lead-free material declarations match current manufacturing standards. Ensure the part number matches the exact ACT series specification rather than AC or HC variants.
Selection Notes
Select this component when a non-inverting octal buffer with three-state capability is required for 5 V systems. The ACT series offers faster switching speeds compared to standard AC logic while maintaining CMOS power efficiency. The TSSOP package is suitable for surface-mount applications requiring high pin density.
Part Context
This device belongs to the MC74ACT540/541 family of octal buffers. The 540 variant provides non-inverting outputs, whereas the 541 variant offers inverting outputs. Both share similar electrical characteristics and are designed for high-density digital systems requiring robust drive strength and fast propagation delays.
Replacement Considerations
MC74ACT541DT serves as the inverting equivalent. MC74AC540DT is the lower-speed AC series alternative. Cross-reference with other manufacturers' 74ACT540 equivalents ensuring identical voltage ranges and package types.
