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MC74ACT125DR2
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Product Detailed Parameters
- Description：IC BUFF NON-INVERT 5.5V 14SOIC
- Series：74ACT
- Mfr：onsemi
- Package：Bulk
- Logic Type：Buffer, Non-Inverting
- Number of Elements：4
- Number of Bits per Element：1
- 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：14-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：14-SOIC
- Grade：-
- Qualification：-
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Overview
The MC74ACT125DR2 is a quad 3-state buffer manufactured by onsemi using high-performance silicon-gate CMOS technology. It operates within a supply voltage range of 4.5 V to 5.5 V and features TTL-compatible inputs. The device provides four non-inverting buffers with low-enable control, capable of sourcing and sinking up to 24 mA. Propagation delay is typically 9 ns at 5.0 V with a 50 pF load. It is available in SOIC-14 and TSSOP-14 packages.
Feature Summary
- Features TTL-compatible inputs for direct interfacing with TTL logic systems.
- Provides four independent non-inverting buffers with low-active enable controls.
- Capable of driving loads with output currents up to 24 mA.
Applications
- Buffering memory address and data lines
- Driving bus-oriented circuits
- Clock distribution networks
Procurement Notes
Verify the specific suffix 'R2' corresponds to tape and reel packaging as documented in the ordering information. Confirm that the 'ACT' designation ensures compatibility with TTL input thresholds required by the target circuit design. Ensure the package type matches the PCB footprint specifications.
Selection Notes
Select this component when TTL-compatible input levels are necessary alongside CMOS drive capabilities. The ACT series offers faster switching speeds compared to standard AC devices while maintaining lower power consumption than older ALS families. Verify that the 5V operating voltage aligns with the system power rails.
Part Context
This part belongs to the MC74AC/ACT125 family of quad buffers. It shares functional similarities with the MC74AC125 but differs in input threshold characteristics to support TTL interfaces. The DR2 suffix indicates surface-mount packaging in a tape and reel format for automated assembly processes.
Replacement Considerations
MC74ACT125DG
FAQ
What is the difference between MC74AC125 and MC74ACT125?
The MC74ACT125 has TTL-compatible input voltage thresholds, whereas the MC74AC125 uses standard CMOS thresholds. Both share similar output drive capabilities and propagation delays.
How does the enable pin function?
The device features a low-enable input. When the enable pin is low, the buffer is active and passes the input signal to the output. When high, the output enters a high-impedance state.
