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Product Detailed Parameters
- Description:SINGLE NON-INVERTING BUFFER, TTL
- Series:74VHC
- Mfr:onsemi
- Package:Tape & Reel (TR),Cut Tape (CT)
- Logic Type:Buffer, Non-Inverting
- Number of Elements:1
- Number of Bits per Element:1
- Input Type:-
- Output Type:3-State
- Current - Output High, Low:8mA, 8mA
- Voltage - Supply:2V ~ 5.5V
- Operating Temperature:-55°C ~ 125°C (TA)
- Mounting Type:Surface Mount
- Package / Case:SC-74A, SOT-753
- Supplier Device Package:SC-74A
- Grade:Automotive
- Qualification:AEC-Q100
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Overview
The MC74VHC1GT126DBVT1G-Q is a single-gate noninverting 3-state buffer from the VHC logic family, manufactured by onsemi. It operates within a supply voltage range of 2.0 V to 5.5 V and features TTL-level input thresholds. The device provides high noise immunity with a buffered output capable of sourcing or sinking 8 mA at 3.0 V. It includes over-voltage tolerant inputs and outputs up to 5.5 V, ensuring protection against voltage mismatches. The component is housed in an SC-74A (SOT-23-5) package and supports partial power-down via IOFF.
Feature Summary
- TTL-level input thresholds for direct interfacing with 5 V circuits
- Over-voltage tolerant inputs and outputs up to 5.5 V regardless of supply voltage
- IOFF feature supports partial power-down protection
- High noise immunity with buffered 3-state output
Applications
- Interfacing 5 V circuits to 3 V circuits
- Automotive applications requiring AEC-Q100 qualification
- Battery backup systems
- Hot insertion scenarios
Procurement Notes
Verify that the ordering suffix '-Q' corresponds to the specific automotive site and control change requirements mandated by the application. Confirm AEC-Q100 qualification status and PPAP capability directly with the manufacturer documentation. Ensure the SC-74A package variant matches the PCB footprint design specifications before finalizing procurement orders.
Selection Notes
Select this component when TTL-level input compatibility is required alongside 3-state bus driving capabilities. The device is suitable for designs needing over-voltage tolerance on I/O lines independent of the VCC level. Consider the SC-74A package size constraints and the -Q suffix requirements for automotive-grade supply chain controls and unique manufacturing site specifications.
Part Context
This part belongs to the MC74VHC1G126/MC74VHC1GT126 series of single noninverting buffers. The 'T' designation indicates TTL input thresholds, distinguishing it from the standard CMOS threshold version. The '-Q' suffix denotes a qualified automotive grade product with specific site and process controls, differentiating it from standard commercial variants like the MC74VHC1GT126DBVT1G.
Replacement Considerations
MC74VHC1GT126DBVT1G
FAQ
What is the difference between MC74VHC1G126 and MC74VHC1GT126?
The MC74VHC1G126 has CMOS-level input thresholds, while the MC74VHC1GT126 has TTL-level input thresholds.
Does the device support partial power-down?
Yes, the IOFF feature supports partial power-down protection, preventing excessive current draw when VCC is zero.
What does the '-Q' suffix indicate?
The '-Q' suffix indicates the device is AEC-Q100 qualified and PPAP capable, designed for automotive and other applications requiring unique site and control change requirements.
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