SN74AHC125QPWRG4HT Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN74AHC125QPWRG4HT is an automotive-qualified quad bus buffer gate IC from Texas Instruments with 3-state outputs and active-low output enable controls. It operates from 2V to 5.5V supply voltage and is housed in a 14-pin TSSOP package with high-temperature HT rating. Available in stock worldwide with tape-and-reel packaging for automated assembly.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- SN74AHC125QPWRG4HT Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Automotive AEC-Q100 and high-temperature (HT) qualified quad bus buffer for reliable operation in harsh underhood environments
- 3-state outputs with individual active-low output enable controls allowing independent buffer gating for bus multiplexing
- Wide 2V to 5.5V supply voltage range with AHC-family high-speed CMOS technology for fast propagation delays
- 14-pin TSSOP package in tape-and-reel format with RoHS lead-free (G4) and halogen-free (HT) construction
Applications
The SN74AHC125QPWRG4HT is commonly used in automotive body control modules, CAN bus interfaces, and LIN bus buffer circuits where isolated signal gating is required with tri-state bus sharing. Its high-temperature rating makes it suitable for engine compartment electronics and transmission control units operating in extreme thermal environments. Industrial applications include data bus buffering in PLC systems, memory bus interfaces, and board-level signal isolation in high-reliability embedded systems.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74AHC125QPWRG4HT:
Bus Driver, AHC/VHC/H/U/V Series, 4-Func, 1-Bit, True Output, CMOS, PDSO14
Bus Driver, AHC/VHC/H/U/V Series, 4-Func, 1-Bit, True Output, CMOS, PDSO14
Bus Driver, AHC/VHC/H/U/V Series, 4-Func, 1-Bit, True Output, CMOS, PDSO14
Frequently Asked Questions
What does the HT suffix mean in SN74AHC125QPWRG4HT?
The HT suffix indicates a High-Temperature qualification, meaning the SN74AHC125QPWRG4HT is rated for operation beyond the standard automotive temperature range, typically up to 150°C, making it suitable for extreme underhood automotive applications such as engine control and exhaust management systems.
How many buffers are in the SN74AHC125QPWRG4HT and how are they controlled?
The SN74AHC125QPWRG4HT contains four independent non-inverting buffer gates, each with its own active-low output enable (OE) pin. When OE is high, the corresponding output enters a high-impedance (3-state) mode, allowing the buffer to be electrically disconnected from the bus without affecting the other three channels.
What is the supply voltage range for the SN74AHC125QPWRG4HT?
The SN74AHC125QPWRG4HT operates over a supply voltage range of 2V to 5.5V, which makes it compatible with 2.5V, 3.3V, and 5V digital logic systems. The AHC logic family provides fast propagation delay and low power consumption across this voltage range.
Is the SN74AHC125QPWRG4HT RoHS compliant and halogen-free?
Yes, the G4 suffix confirms RoHS-compliant lead-free (Pb-free) solder construction with e3 or e4 JEDEC moisture sensitivity level, and the HT designation also implies use of halogen-free materials, making this device suitable for environmentally-regulated automotive and industrial applications.
What are typical alternatives to the SN74AHC125QPWRG4HT?
Common alternatives include the SN74LVC125A (lower voltage LVC family), SN74AHCT125 (TTL-compatible inputs), and SN74HC125 (standard CMOS). For automotive HT-grade replacement, verify that alternatives carry equivalent AEC-Q100 and high-temperature certifications to maintain system qualification and reliability.
Related Guides
TPS61291DRVR Selection Guide: Low-Quiescent-Current Boost Converters for IoT and Wearables
How to select the TPS61291DRVR and low-Iq boost converters for IoT, wearables, and coin-cell designs. Compares specs, packages, and alternatives from TI, ADI, and Microchip.
May 13, 2026
TMS5704357BZWTQQ1 Selection Guide: Choosing the Right TMS570 Automotive MCU Variant
Compare TMS570 automotive MCU variants by ASIL level, flash, package, and peripherals. Find the right fit from entry-level LQFP to the ASIL-D TMS5704357BZWTQQ1.
May 13, 2026
TI Hercules TMS5704357BZWTQQ1 Design Guide for Automotive ASIL-D and Industrial Functional Safety
Complete integration guide for the TI Hercules TMS5704357BZWTQQ1 dual-core lockstep Cortex-R5F MCU: lockstep CPU, ECC RAM, FlexRay/CAN-FD, and ASIL-D pitfalls.
May 12, 2026
PTN78000WAH Selection Guide: Choosing the Right 1.5 A 36 V Step-Down Power Module
Compare PTN78000WAH against PTN78000WAS, PTN78060WAH, and other 1.5A 36V step-down modules. Covers package, current rating, efficiency, and drop-in replaceability.
May 12, 2026
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.
More from Texas Instruments
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”