74AHCT1G125DCKT Texas Instruments Integrated Circuit (SOT23 (5-Pin)) In Stock
74AHCT1G125DCKT is a single 3-state buffer and line driver from Texas Instruments operating on a 5 V supply with AHCT logic levels in a 5-pin SC-70 package. It offers 8 mA output drive strength and propagation delay under 10 ns. In stock and available with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- SOT23 (5-Pin)
- Pin Count
- 5
- Lifecycle
- ACTIVE
- Datasheet
- 74AHCT1G125DCKT Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of 74AHCT1G125DCKT?
- Single 3-state buffer with active-low output enable allowing bus sharing across multiple devices on a common data line
- AHCT logic family accepts TTL-compatible inputs at 5 V supply, bridging 3.3 V logic outputs to 5 V bus systems
- Ultra-compact 5-pin SC-70 package (2.0 mm x 2.1 mm) enabling high-density PCB integration in space-constrained designs
What is 74AHCT1G125DCKT used for?
74AHCT1G125DCKT is widely used as a single-gate bus buffer in microcontroller GPIO expansion circuits, allowing 3.3 V MCU outputs to drive 5 V logic or long PCB traces with 8 mA sink/source current. It also suits level translation and signal isolation in SPI or I2C peripheral connections where bus contention must be avoided. The 3-state output makes it practical for bidirectional bus architectures in industrial and consumer electronics.
What are the specifications of 74AHCT1G125DCKT?
| YTEOL | EYTEOL |
| Package | SOT23 (5-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Country of Origin | Country of Origin |
Where can I find the 74AHCT1G125DCKT datasheet?
74AHCT1G125DCKT Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for 74AHCT1G125DCKT?
Compatible alternatives and drop-in replacements for 74AHCT1G125DCKT:
Bus Driver, AHCT/VHCT/VT Series, 1-Func, 1-Bit, True Output, CMOS, PDSO5
Bus Driver, AHCT/VHCT/VT Series, 1-Func, 1-Bit, True Output, CMOS, PDSO5
Bus Driver, AHCT/VHCT/VT Series, 1-Func, 1-Bit, True Output, CMOS, PDSO5
Bus Driver, AHCT/VHCT/VT Series, 1-Func, 1-Bit, True Output, CMOS, PDSO5
Bus Driver, AHCT/VHCT/VT Series, 1-Func, 1-Bit, True Output, CMOS, PDSO5
Bus Driver, AHCT/VHCT/VT Series, 1-Func, 1-Bit, True Output, CMOS, PDSO5
Bus Driver, AHCT/VHCT/VT Series, 1-Func, 1-Bit, True Output, CMOS, PDSO5
Bus Driver, AHCT/VHCT/VT Series, 1-Func, 1-Bit, True Output, CMOS, PDSO
Frequently Asked Questions
How does the 3-state output of 74AHCT1G125DCKT support multi-device bus architectures?
The active-low output enable pin places the output in a high-impedance state, allowing multiple 74AHCT1G125DCKT devices to share a single bus line without conflict. This is critical in SPI MISO lines or shared data buses where only one driver should be active at a time, supporting up to 8 mA output drive at 5 V.
Can 74AHCT1G125DCKT accept 3.3 V logic inputs when powered from a 5 V supply?
Yes. The AHCT logic family has TTL-compatible input thresholds, accepting inputs as low as 2 V as logic high when VCC is 5 V. This makes 74AHCT1G125DCKT a reliable 3.3 V to 5 V interface buffer with propagation delay typically under 10 ns across -40°C to +125°C.
For a high-density PCB design, what footprint area does the SC-70 package of 74AHCT1G125DCKT require?
The 5-pin SC-70 package measures approximately 2.0 mm x 2.1 mm with a 0.65 mm pitch, occupying minimal PCB area compared to SOT-23 or SO-8 alternatives. This makes 74AHCT1G125DCKT ideal for wearable electronics, compact industrial sensors, and mobile device PCBs where space per gate is at a premium.
When should 74AHCT1G125DCKT be chosen over a quad buffer such as 74AHCT125?
74AHCT1G125DCKT is the preferred choice when only 1 buffer channel is needed and PCB space is limited, avoiding the unused 3 channels of a 74AHCT125 in a 14-pin SOIC package. The SC-70-5 package at 5 V with 8 mA drive is sufficient for single-line bus isolation or GPIO signal buffering in cost-sensitive designs.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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