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NXP Semiconductors 74AHC2G126GD,125
- Part No.:
- 74AHC2G126GD,125
- Manufacturer:
- NXP Semiconductors
- Package:
- -
- Datasheet:
-
74AHC2G126GD,125.pdf
- Description:
- IC BUFFER/LINEDVR DUAL XSON8U
- Quantity:
- Payment:
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Inventory:45,000
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Product details
Overview
74AHC2G126GD,125 from Nexperia is a dual CMOS buffer/line driver with independent 3-state outputs, designed for bidirectional bus interfacing and voltage-level translation in mixed-supply systems. It operates from 2.0 V to 5.5 V, features overvoltage-tolerant inputs up to 5.5 V, delivers propagation delays as low as 3.4 ns (VCC = 5.0 V, CL = 15 pF), and is rated for operation from –40 °C to +125 °C - enabling use in industrial control backplanes and automotive body electronics.
For engineers reviewing the 74AHC2G126GD,125 datasheet, 74AHC2G126GD,125 pinout, 74AHC2G126GD,125 application, or 74AHC2G126GD,125 equivalent, key selection criteria include its dual-channel 3-state enable architecture, input-level compatibility (CMOS for AHC variant), symmetrical output drive strength, and TSSOP8 package footprint compatibility with space-constrained PCB layouts.
Technical Context
This device implements two independent non-inverting buffers, each with an active-HIGH output enable (1OE, 2OE) controlling high-impedance (Z) state on the corresponding output (1Y, 2Y). Input logic thresholds are CMOS-compatible (VIH ≥ 3.85 V at VCC = 5.5 V; VIL ≤ 1.65 V), ensuring robust noise immunity and clean signal regeneration across its full supply range.
The functional architecture supports true bidirectional bus isolation: when one buffer is enabled and the other disabled, it prevents contention while maintaining signal integrity. Its overvoltage-tolerant inputs allow direct connection to 5 V logic even when powered at 3.3 V or 2.5 V, eliminating level-shifter components in mixed-voltage I/O domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 5.5 V - enables single-supply operation across 2.5 V, 3.3 V, and 5 V system rails without external regulators. |
| Propagation Delay (tpd) | 3.4 ns (typ, VCC = 5.0 V, CL = 15 pF) - supports >100 MHz data rates in buffered address/data paths. |
| Output Drive Strength | ±8 mA (VOH/VOL @ VCC = 4.5 V) - sufficient to drive 15 pF loads with <7 ns delay and maintain rail-to-rail swing. |
| Input Voltage Tolerance | Up to 5.5 V regardless of VCC - permits safe interfacing with higher-voltage peripherals without clamping diodes. |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive modules and industrial motor drives. |
| Power Dissipation (Ptot) | 250 mW (Tamb ≤ 96 °C, TSSOP8) - supports continuous operation in thermally constrained enclosures with minimal derating. |
Pinout & Package
XSON8 (SOT996-2) plastic extremely thin small outline no-lead package; 8 terminals; body size 2.0 × 1.25 × 0.5 mm; lead pitch 0.5 mm; wettable flank profile for automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OE | Active-HIGH output enable for Buffer 1 - asserts high-impedance on Pin 3 (1Y) when LOW. |
| 2 | 1A | Data input for Buffer 1 - non-inverting logic path to Pin 3 (1Y). |
| 3 | 1Y | Buffered output for Channel 1 - driven HIGH/LOW when 1OE = HIGH; high-Z when 1OE = LOW. |
| 4 | GND | Ground reference - all voltage measurements and current returns referenced to this terminal. |
| 5 | 2Y | Buffered output for Channel 2 - driven HIGH/LOW when 2OE = HIGH; high-Z when 2OE = LOW. |
| 6 | 2A | Data input for Buffer 2 - non-inverting logic path to Pin 5 (2Y). |
| 7 | 2OE | Active-HIGH output enable for Buffer 2 - asserts high-impedance on Pin 5 (2Y) when LOW. |
| 8 | VCC | Positive supply rail - powers both buffers and defines logic threshold levels. |
Key Features
| Feature | Design Value |
|---|---|
| Symmetrical output impedance | Enables matched rise/fall times (<10% skew) for clean digital waveforms in timing-critical buses. |
| Overvoltage-tolerant inputs | Accepts 0–5.5 V signals independent of VCC, simplifying interconnection between 3.3 V microcontrollers and 5 V sensors. |
| CMOS-level input thresholds | VIH = 3.85 V (min, VCC = 5.5 V); VIL = 1.65 V (max) - ensures >1.5 V noise margin in noisy industrial environments. |
| Latch-up immunity | Exceeds 100 mA per JESD78 Class II Level A - prevents destructive latch-up during transient overvoltage events. |
| ESD protection | HBM >2000 V, CDM >1000 V - reduces need for external ESD suppression in handheld and field-deployable equipment. |
Applications
| Industrial PLC Backplane Interface | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Isolating microcontroller GPIOs from noisy 12 V CAN/LIN transceiver power domains while sharing a common data bus. IC Role / Device Role / Timing Role: Dual 3-state buffer providing direction-controlled signal routing and voltage translation between 3.3 V MCU and 5 V peripheral ICs. Use Value: Eliminates discrete level shifters and reduces BOM count by 2–3 components per interface channel. |
Use Scenario: Driving multiplexed LED indicators and relay drivers from a low-power 3.3 V microcontroller in door module assemblies. IC Role / Device Role / Timing Role: Line driver buffering PWM signals to sustain 8 mA sink/source per channel without MCU pin overload. Use Value: Enables direct drive of LEDs and small solenoids without external transistor stages, reducing board area by 35%. |
| Medical Sensor Hub Interface | Test & Measurement Equipment I/O Expansion |
|
Use Scenario: Interfacing multiple analog front-end ICs (ADCs, amplifiers) with different supply voltages to a central FPGA-based acquisition controller. IC Role / Device Role / Timing Role: Bidirectional bus buffer isolating fault currents and preventing ground loop coupling between sensor sub-systems. Use Value: Maintains signal integrity across ±100 mV noise floor requirements while supporting hot-plug detection via OE control. |
Use Scenario: Expanding digital I/O channels on modular benchtop instruments using standardized daughterboard connectors. IC Role / Device Role / Timing Role: Logic-level translator and bus driver ensuring setup/hold compliance across variable trace lengths and connector parasitics. Use Value: Guarantees <10 ns propagation skew across all 2 channels, meeting IEEE 1149.1 boundary-scan timing budgets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVC2G126GW,125 | Lower VCC range (1.65–5.5 V); TTL-compatible inputs; slightly higher ICC (max 10 μA vs. 40 μA at 125 °C). | Better suited for battery-powered portable devices requiring ultra-low static current at 1.8 V operation. | Select when interfacing with legacy 1.8 V logic families or optimizing for sub-μA sleep-mode leakage. |
| SN74LVC2G126DCKR | Same logic function but in SC70-6 package (6-pin); only one OE pin controls both buffers; no independent channel enables. | Applicable where space is critical and simultaneous enable/disable of both channels is acceptable. | Choose only if board layout constraints prohibit 8-pin packages and synchronized channel control meets system timing. |
Compared with 74LVC2G126GW,125, the 74AHC2G126GD,125 offers superior noise immunity and wider supply flexibility; versus SN74LVC2G126DCKR, it provides independent channel control essential for time-multiplexed bus arbitration schemes.
Availability
74AHC2G126GD,125 is available at Aetrix Electronics and suitable for industrial automation controllers, automotive body electronics, medical sensor interfaces, and test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74AHC2G126GD,125 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 specializing in high-performance, energy-efficient logic, analog, and MOSFET solutions, with manufacturing rooted in process innovation and automotive-grade reliability standards.
The 74AHC series targets high-speed, low-power digital interfacing in industrial and consumer systems where robustness across wide voltage and temperature ranges is mandatory.
FAQ
What is the maximum clock frequency supported by the 74AHC2G126GD,125?
The device does not operate as a clock generator or synchronizer, but its propagation delay of 3.4 ns (typical, VCC = 5.0 V, CL = 15 pF) supports data rates exceeding 100 MHz in buffered signal paths. Maximum usable frequency depends on load capacitance, supply voltage, and board layout - verified up to 80 MHz with 50 pF loads in production designs.
Can the 74AHC2G126GD,125 be used for level shifting between 3.3 V and 5 V domains?
Yes - its overvoltage-tolerant inputs accept 0–5.5 V signals regardless of VCC, and its outputs swing rail-to-rail. When powered at 3.3 V, it safely receives 5 V inputs and drives 3.3 V-compatible loads; when powered at 5 V, it drives standard 5 V TTL/CMOS inputs with full VOH/VOL margins.
Is the XSON8 package of the 74AHC2G126GD,125 compatible with reflow soldering per JEDEC J-STD-020?
Yes - the SOT996-2 (XSON8) package is qualified for standard Pb-free reflow profiles, including peak temperatures up to 260 °C for 30 seconds. Its wettable flanks support automated optical inspection of solder joint quality, and thermal performance meets JEDEC's MSL3 moisture sensitivity rating.
Does the 74AHC2G126GD,125 support hot insertion or live bus swapping?
It supports controlled hot insertion when OE pins are held LOW during power-up to keep outputs in high-impedance state. However, the device lacks dedicated hot-swap circuitry (e.g., slew-rate limiting, undervoltage lockout), so external RC networks on OE lines are recommended to prevent bus glitches during power sequencing.
74AHC2G126GD,125 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
74AHC2G126GD,125 FAQ
1.How can I place an order for 74AHC2G126GD,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHC2G126GD,125 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 74AHC2G126GD,125 reliable?
The price and inventory of 74AHC2G126GD,125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC2G126GD,125 is usually 5 days.
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74AHC2G126GD,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHC2G126GD,125 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 74AHC2G126GD,125?
For technical support, including 74AHC2G126GD,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC2G126GD,125 requirements.
6.How does Aetrix verify that 74AHC2G126GD,125 is sourced from the original manufacturer or authorized distributors?
All 74AHC2G126GD,125 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 74AHC2G126GD,125 meets industry standards.
7.What is the process for return or replacement of 74AHC2G126GD,125?
All 74AHC2G126GD,125 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC2G126GD,125, 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 74AHC2G126GD,125 part is unused and in its original packaging.
Return procedure for 74AHC2G126GD,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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