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MC74ACT540ML1
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Product Detailed Parameters
- Description：BUS DRIVER, ACT SERIES, 8-BIT
- 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 MC74ACT540ML1 is an octal buffer and line driver from the ACT logic series, manufactured by onsemi. It features eight inverted outputs with three-state capability, housed in a 20-pin SOIC package. The device operates within a supply voltage range of 4.5 V to 5.5 V. Key electrical parameters include a 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 specified at 8 uA, with a maximum power dissipation of 500 mW. It supports surface mount installation and functions reliably across an operating temperature range of -40°C to +85°C.
Feature Summary
- Octal three-state outputs allow for bus isolation when enabled
- Inverted logic configuration suitable for address and data buffering
- TTL-compatible inputs ensure direct interface with TTL logic circuits
- Through-bol architecture facilitates PCB layout density
Applications
- Memory address drivers
- Clock signal distribution
- Microprocessor output port interfacing
- Bus transceiver applications
Procurement Notes
Verify the specific suffix ML1 corresponds to the required tape-and-reel packaging quantity and moisture sensitivity level. Confirm RoHS compliance status and lead-free certification details directly with the manufacturer or authorized distributor documentation before finalizing procurement orders.
Selection Notes
Select this component when an octal inverting buffer with three-state control is required for 5V logic systems. Ensure the application demands TTL-compatible input thresholds and can accommodate the specified 7.5 ns propagation delay. Verify that the SOIC-20 package dimensions fit the target PCB footprint constraints.
Part Context
This part belongs to the MC74ACT540/541 family of octal buffers and line drivers. The MC74ACT540 variant provides inverted outputs, whereas the MC74ACT541 offers non-inverting outputs. Both share similar functional characteristics but differ in pinout orientation relative to input/output placement, optimizing them for different microprocessor interface layouts.
Replacement Considerations
The MC74AC540ML1 serves as a compatible alternative within the same family, offering AC speed characteristics instead of ACT specifications. Verify voltage compatibility and propagation delay requirements before substituting, as AC devices may operate over a wider voltage range.
