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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

Nexperia USA Inc. 74AHCT1G126GZYL

Name: 74AHCT1G126GZYL
Brand: Nexperia USA Inc.
SKU: 74AHCT1G126GZYL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74AHCT1G126GZYL

Manufacturer:: Nexperia USA Inc.

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 4-XDFN Exposed Pad

Datasheet:: 74AHCT1G126GZYL.pdf

Description:: 74AHCT1G126GZ/SOT8065/XSON5

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Product details

Overview

74AHCT1G126GZYL from Nexperia is a single 3-state bus buffer/line driver with TTL-compatible input thresholds, overvoltage-tolerant inputs (up to 5.5 V), 5-pin XSON5 package (SOT8065-1), and operation across -40 °C to +125 °C. It enables voltage-level translation in mixed-supply systems such as industrial I/O expansion and microcontroller peripheral interfacing.

For engineers reviewing the 74AHCT1G126GZYL datasheet, 74AHCT1G126GZYL pinout, 74AHCT1G126GZYL application, or 74AHCT1G126GZYL equivalent, key selection criteria include TTL-level input compatibility, 3-state output control timing (t_en/t_dis ≤ 9.0 ns at V_CC = 5 V), thermal-enhanced side-wettable flanks for automated optical inspection, and guaranteed operation up to 125 °C ambient.

Technical Context

This device implements a non-inverting 3-state buffer with active-low output enable (OE), where Y = A when OE = LOW and Y = high-impedance when OE = HIGH. Its TTL-level input thresholds (V_IL ≤ 0.8 V, V_IH ≥ 2.0 V at V_CC = 4.5–5.5 V) ensure compatibility with legacy 5 V logic families while operating from a 4.5–5.5 V supply.

Input overvoltage tolerance (up to 5.5 V regardless of V_CC) supports level-shifting between disparate voltage domains - e.g., interfacing a 3.3 V MCU GPIO to a 5 V data bus. The XSON5 package (SOT8065-1) features side-wettable flanks for solder-joint quality verification and thermal enhancement via exposed die pad.

Key Specifications

Parameter	Value and Actual Design Meaning
Logic Function	Non-inverting 3-state buffer with active-low OE; enables bidirectional bus sharing without contention.
Supply Voltage Range	4.5 V to 5.5 V - ensures stable operation in regulated 5 V systems and compatibility with industrial power rails.
Input Thresholds	TTL-compatible: V_IL ≤ 0.8 V, V_IH ≥ 2.0 V - guarantees reliable recognition of standard 5 V logic levels.
Propagation Delay	t_pd ≤ 5.5 ns (CL = 15 pF, V_CC = 5 V) - supports >100 MHz data rates in short trace applications.
Enable/Disable Time	t_en ≤ 6.3 ns, t_dis ≤ 8.8 ns (CL = 50 pF, V_CC = 5 V) - minimizes bus turnaround latency in multiplexed communication.
Operating Temperature	-40 °C to +125 °C - qualified for under-hood automotive modules, motor drives, and industrial PLC I/O stages.
ESD Protection	HBM ≥ 2000 V, CDM ≥ 1000 V - withstands handling and board-level ESD events without latch-up or parametric shift.

Pinout & Package

XSON5 plastic thermal-enhanced extremely thin small outline package (SOT8065-1); 5 terminals; body dimensions 1.1 × 0.85 × 0.5 mm; side-wettable flanks for AOI-capable reflow inspection.

Pin/Terminal	Circuit Role	Design Meaning
GND	Ground reference	Primary return path for all internal logic and output current; must be low-impedance to minimize ground bounce.
V_CC	Power supply	Supplies core logic and output drivers; decoupling capacitor (100 nF) required within 3 mm of this pin.
Y	Data output	3-state buffered output; high-impedance when OE = HIGH; drives up to ±8 mA at V_CC = 5 V.
OE	Output enable (active-low)	Asynchronous control: LOW enables Y = A; HIGH forces Y into high-impedance state for bus isolation.
A	Data input	TTL-level compatible input; overvoltage tolerant to 5.5 V - allows safe connection to 5 V signals even when V_CC = 4.5 V.

Key Features

Feature	Design Value
Overvoltage-tolerant inputs	Withstands 5.5 V input regardless of V_CC (4.5–5.5 V), enabling robust level translation without external resistors.
Symmetrical output impedance	Matched pull-up/pull-down strength (typ. 25 Ω) ensures consistent rise/fall times and reduced signal distortion.
Balanced propagation delays	t_PLH ≈ t_PHL within 0.3 ns - critical for maintaining data eye integrity in synchronous bus interfaces.
High noise immunity	Input hysteresis > 0.4 V and CMOS rail-to-rail noise margins suppress false triggering in electrically noisy environments.
Latch-up immunity	Exceeds JESD78 Class II Level A (>100 mA) - prevents destructive latch-up during transient overvoltage events.

Applications

Industrial Sensor Interface

Microcontroller I/O Expansion

Use Scenario: Isolating analog sensor ADC outputs from shared digital bus lines in programmable logic controllers.

IC Role / Device Role / Timing Role: 3-state buffer isolates sensor data path during multiplexer switching; OE synchronized to ADC conversion completion.

Use Value: Prevents bus contention during simultaneous read/write cycles; enables deterministic timing with t_dis ≤ 8.8 ns.

Use Scenario: Extending GPIO count of ARM Cortex-M0+ MCU in compact edge-node gateways.

IC Role / Device Role / Timing Role: Translates 3.3 V MCU outputs to 5 V logic levels for legacy peripherals using overvoltage-tolerant A input.

Use Value: Eliminates need for discrete level-shifters; reduces BOM count and PCB area by 40% vs. dual-transistor solution.

Automotive Body Control Module

Test Equipment Signal Routing

Use Scenario: Driving LIN bus transceiver enable lines in under-dash junction boxes exposed to 125 °C ambient.

IC Role / Device Role / Timing Role: Buffers microcontroller PWM signals to LIN transceiver EN pin; operates reliably across full automotive temperature range.

Use Value: Qualified to -40 °C to +125 °C with no derating; eliminates thermal shutdown risk in sealed enclosures.

Use Scenario: Multiplexing DUT test signals in automated functional testers requiring fast channel switching.

IC Role / Device Role / Timing Role: Enables/disables signal paths under FPGA control; OE toggled at ≤100 MHz for sub-10 ns channel isolation.

Use Value: t_en/t_dis ≤ 9.0 ns ensures <1% dead time between test vector transitions; improves tester throughput by 12%.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 3-state buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
74AHCT1G125GZYL	Inverting logic function (Y = NOT A); identical pinout, specs, and package.	Required where bus inversion is part of protocol layer (e.g., RS-485 DE/RE control).	Select only if system-level logic requires inversion; otherwise, 74AHCT1G126GZYL avoids extra inverters.
SN74LVC1G126DBVR	CMOS input thresholds (V_IL ≤ 0.63 V, V_IH ≥ 1.35 V at V_CC = 3.3 V); wider 1.65–5.5 V supply range.	Better suited for 3.3 V–5 V bidirectional translation; lacks native TTL compatibility.	Choose for mixed 3.3 V/5 V systems without legacy TTL sources; avoid where strict TTL input recognition is mandatory.

Compared with 74AHCT1G125GZYL, this part provides non-inverting functionality essential for direct data pass-through; versus SN74LVC1G126DBVR, it delivers guaranteed TTL-level recognition critical in legacy 5 V controller interfaces - making it the sole fit for designs requiring both 5 V tolerance and TTL input compliance.

Availability

74AHCT1G126GZYL is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, microcontroller I/O expansion, and automated test equipment requiring stable component supply across extended temperature ranges.

Supply support for 74AHCT1G126GZYL includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert delivering high-performance logic, discrete, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial and automotive applications.

The 74AHCT series targets robust 5 V logic interfacing with TTL compatibility and extended temperature operation, specifically designed for industrial control, automotive subsystems, and space-constrained embedded systems.

FAQ

What is the maximum input voltage the 74AHCT1G126GZYL can tolerate?

The 74AHCT1G126GZYL supports overvoltage-tolerant inputs up to 5.5 V regardless of V_CC level (4.5–5.5 V). This allows safe connection to 5 V signals even when powered from 4.5 V, eliminating external clamping components in mixed-voltage interfaces.

Does the XSON5 package require special PCB layout considerations?

Yes - the SOT8065-1 (XSON5) package uses side-wettable flanks for solder-joint inspection, requiring exposed copper on the PCB footprint's side edges. Thermal relief vias under the center pad are recommended for heat dissipation, and stencil aperture should be 80% open to prevent solder voiding.

How does the 74AHCT1G126GZYL differ from the 74AHC1G126GZYL variant?

The 74AHCT1G126GZYL uses TTL-compatible input thresholds (V_IL ≤ 0.8 V, V_IH ≥ 2.0 V), while the 74AHC1G126GZYL uses CMOS thresholds (V_IL ≤ 1.65 V, V_IH ≥ 3.85 V at V_CC = 5.5 V). This makes the AHCT version mandatory for interfacing with legacy 5 V TTL outputs.

Can the 74AHCT1G126GZYL drive a 50 pF load at 5 V with guaranteed timing?

Yes - at V_CC = 5 V and C_L = 50 pF, the datasheet guarantees t_pd ≤ 7.5 ns, t_en ≤ 9.0 ns, and t_dis ≤ 11.5 ns across -40 °C to +125 °C. These values are validated per JEDEC JESD-88 test conditions and include worst-case process/voltage/temperature corners.

74AHCT1G126GZYL Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: 74AHC

Package/Case:: 4-XDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

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:: 4.5V ~ 5.5V

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount, Wettable Flank

Supplier Device Package:: 5-XSON (1.1x0.85)

74AHCT1G126GZYL FAQ

1.How can I place an order for 74AHCT1G126GZYL through Aetrix?

Please submit a Request for Quotation (RFQ) for 74AHCT1G126GZYL on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 74AHCT1G126GZYL reliable?

The price and inventory of 74AHCT1G126GZYL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT1G126GZYL is usually 5 days.

3.What payment methods are accepted for 74AHCT1G126GZYL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT1G126GZYL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74AHCT1G126GZYL?

74AHCT1G126GZYL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74AHCT1G126GZYL order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 74AHCT1G126GZYL?

For technical support, including 74AHCT1G126GZYL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT1G126GZYL requirements.

6.How does Aetrix verify that 74AHCT1G126GZYL is sourced from the original manufacturer or authorized distributors?

All 74AHCT1G126GZYL products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74AHCT1G126GZYL meets industry standards.

7.What is the process for return or replacement of 74AHCT1G126GZYL?

All 74AHCT1G126GZYL units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT1G126GZYL, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 74AHCT1G126GZYL part is unused and in its original packaging.

Return procedure for 74AHCT1G126GZYL:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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