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MC74VHCT126AD
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Product Detailed Parameters
- Description：IC BUFFER NON-INVERT 5.5V 14SOIC
- Series：74VHCT
- 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：8mA, 8mA
- 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 MC74VHCT126AD is a quad bus buffer manufactured by onsemi, belonging to the 74VHCT logic series. It features four non-inverting buffers with 3-state outputs housed in a 14-SOIC package. The device operates within a supply voltage range of 4.5V to 5.5V and supports an operating temperature range from -40°C to 85°C. Each element provides one bit of buffering capability with high output drive currents of 8mA for both high and low states.
Feature Summary
- Provides four independent non-inverting buffer channels with 3-state output control
- Compatible with TTL input levels while utilizing CMOS technology
- Designed for high-speed bus-oriented applications requiring low power consumption
Applications
- Memory address drivers
- Clock drivers
- Bus-oriented systems
Procurement Notes
Verify the specific suffix requirements against the official datasheet, as packaging options such as tape and reel may differ from standard tube configurations. Confirm RoHS compliance status and moisture sensitivity level prior to procurement, as environmental certifications can vary by manufacturing batch and region.
Selection Notes
Select this component when interfacing between CMOS and TTL logic families requiring 5V operation. Ensure the design accommodates the 4.5V to 5.5V supply constraint. Consider the 14-SOIC package dimensions for PCB layout compatibility and verify thermal dissipation requirements for the intended operating environment.
Part Context
This part belongs to the 74VHCT family, which combines the speed of VHCT technology with TTL-compatible inputs. It serves as a direct replacement for older LS-series buffers in modern 5V digital systems, offering improved switching speeds and lower power consumption compared to legacy counterparts while maintaining pin-out compatibility.
Replacement Considerations
Check for active substitutes like the MC74VHCT126ADR2 or MC74VHCT126AMEL if the base AD suffix is obsolete. Verify that alternative packages maintain the same pin configuration and electrical characteristics to ensure seamless integration without redesigning the host circuit board.
