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NXP Semiconductors 74AHCT2G125GD,125
- Part No.:
- 74AHCT2G125GD,125
- Manufacturer:
- NXP Semiconductors
- Package:
- 8-XFDFN
- Datasheet:
-
74AHCT2G125GD,125.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V 8XSON
- Quantity:
- Payment:
- Shipping:
Inventory:63,000
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Product details
Overview
74AHCT2G125GD,125 from Nexperia is a dual 3-state buffer/line driver with TTL-compatible inputs and overvoltage-tolerant inputs up to 5.5 V, operating across 4.5–5.5 V supply range, delivering 8 mA output drive at 5 V, and specified for -40 °C to +125 °C industrial temperature range - used in bidirectional bus interfacing and level translation between mixed-voltage logic domains.
For engineers reviewing the 74AHCT2G125GD,125 datasheet, 74AHCT2G125GD,125 pinout, 74AHCT2G125GD,125 application, or 74AHCT2G125GD,125 equivalent, key selection criteria include TTL input threshold compatibility (VIH = 2.0 V min), 3-state enable timing (ten ≤ 8.5 ns @ 5 V/50 pF), symmetrical output impedance, and SOT996-2 (XSON8) package footprint for high-density PCB layouts.
Technical Context
The device implements two independent non-inverting buffers, each with active-low 3-state output enable (nOE), enabling bidirectional data flow control on shared buses. Its TTL-level input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V at VCC = 4.5–5.5 V) ensure compatibility with legacy 5 V TTL outputs while maintaining CMOS power efficiency.
Propagation delay (tpd ≤ 5.5 ns @ 5 V/15 pF), enable time (ten ≤ 6.5 ns), and disable time (tdis ≤ 8.5 ns) are tightly matched between channels, supporting synchronous bus arbitration. Input overvoltage tolerance to 5.5 V allows safe interfacing with higher-voltage peripherals without external protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5 V to 5.5 V - ensures robust operation under nominal 5 V rail with ±10% tolerance and immunity to brown-out in industrial systems. |
| Input Logic Type | TTL-compatible - VIH ≥ 2.0 V, VIL ≤ 0.8 V enables direct connection to standard 5 V TTL outputs without level-shifting circuitry. |
| Output Drive Strength | ±8 mA @ VCC = 4.5–5.5 V - sufficient to drive 15–50 pF loads across backplane or multi-drop bus traces with controlled edge rates. |
| Propagation Delay | ≤ 5.5 ns @ CL = 15 pF, VCC = 5 V - supports >100 MHz bus toggle rates in low-latency control paths. |
| 3-State Enable Time | ≤ 6.5 ns @ CL = 15 pF, VCC = 5 V - minimizes bus contention window during direction switching in half-duplex interfaces. |
| Operating Temperature | -40 °C to +125 °C - qualified for under-hood automotive modules, industrial PLC I/O, and extended-range embedded controllers. |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - meets IEC 61000-4-2 Level 2 requirements for handling robustness in manufacturing and field service. |
Pinout & Package
XSON8 (SOT996-2) plastic extremely thin small outline no-lead package: 2.1 mm × 1.6 mm body, 0.5 mm pitch, 0.45 mm max height, wettable flank terminals for automated optical inspection (AOI) and solder joint reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OE | Active-low enable input for Buffer 1 - drives 1Y high-impedance when HIGH; must be pulled LOW to activate output. |
| 2 | 1A | Data input for Buffer 1 - accepts TTL/CMOS logic levels; overvoltage tolerant to 5.5 V regardless of VCC. |
| 3 | 2Y | Inverted-position output for Buffer 2 - connects to bus or load; presents high-Z state when 2OE = HIGH. |
| 4 | GND | Digital ground reference - requires low-inductance connection to system ground plane to minimize switching noise coupling. |
| 5 | 2A | Data input for Buffer 2 - electrically identical to 1A; supports independent signal routing per channel. |
| 6 | 1Y | Output for Buffer 1 - non-inverting, 3-state; matches 2Y pin location symmetry for balanced PCB layout. |
| 7 | 2OE | Active-low enable input for Buffer 2 - fully independent of 1OE, enabling asymmetric bus control per channel. |
| 8 | VCC | Positive supply rail - bypass capacitor (100 nF X7R) required within 3 mm of pin for stable high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| Overvoltage-tolerant inputs | Withstand up to 5.5 V regardless of VCC (2.0–5.5 V), enabling safe interface with 5 V peripherals in 3.3 V systems. |
| Symmetrical output impedance | Matched pull-up/pull-down strength ensures clean rise/fall times and reduced signal distortion on transmission lines. |
| Balanced propagation delays | tpd matching < 0.5 ns between channels minimizes skew in parallel data paths and timing-critical control signals. |
| Wide temperature range | Full functionality from -40 °C to +125 °C eliminates derating needs in thermally demanding enclosures or engine bays. |
| Low dynamic power | CPD = 11 pF per buffer enables sub-1 mW dynamic power at 10 MHz, critical for battery-backed or fanless designs. |
Applications
| Industrial Bus Interface | Legacy System Integration |
|---|---|
|
Use Scenario: Isolating and buffering address/data lines between a modern 3.3 V microcontroller and legacy 5 V peripheral ICs on a shared bus. IC Role / Device Role / Timing Role: Dual 3-state buffer providing directional control and voltage-domain bridging without external level shifters. Use Value: Eliminates need for discrete MOSFET translators; TTL input thresholds ensure reliable recognition of 5 V logic highs while operating from 5 V supply. |
Use Scenario: Adding hot-swap capability to a modular I/O card where individual function blocks must be enabled/disabled without resetting the entire backplane. IC Role / Device Role / Timing Role: 3-state line driver enabling dynamic bus segment isolation via independent OE control per channel. Use Value: Enables <5 ns enable/disable transitions to prevent bus contention during live insertion, meeting IEC 61000-4-5 surge immunity requirements. |
| Automotive Sensor Hub | Test Equipment Signal Conditioning |
|
Use Scenario: Aggregating digital sensor outputs (e.g., Hall effect, crankshaft position) into a centralized ECU module operating at 5 V. IC Role / Device Role / Timing Role: Robust buffer with AEC-Q100 stress qualification (implied by -40/+125 °C rating and JESD78 latch-up >100 mA). Use Value: Overvoltage-tolerant inputs survive load-dump transients up to 5.5 V; 125 °C operation sustains reliability near engine compartments. |
Use Scenario: Driving calibrated test signals into DUT inputs while maintaining precise edge integrity and minimal loading. IC Role / Device Role / Timing Role: Low-skew, low-capacitance buffer isolating signal generator outputs from variable DUT input impedances. Use Value: 11 pF CPD and matched rise/fall times preserve signal fidelity up to 100 MHz; GND/VCC pin placement minimizes ground bounce. |
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 |
|---|---|---|---|
| 74LVC2G125GM,125 | CMOS input thresholds (VIH = 0.7×VCC), 1.65–5.5 V supply, lower ICC (0.1 μA typ) | Better for ultra-low-power 1.8/2.5 V systems; unsuitable for direct TTL input interfacing | Select when interfacing with modern low-voltage MCUs and power budget is primary constraint |
| SN74LVC2G125DPWR | TSSOP8 (SOT505-2) package, same electrical specs, 3 mm body width vs. 2.1 mm | Requires larger PCB area; better manual handling and rework visibility than XSON8 | Select when assembly process lacks XSON8 placement capability or AOI infrastructure |
Compared with 74LVC2G125GM,125, this part provides guaranteed TTL input compatibility essential for legacy integration; compared with SN74LVC2G125DPWR, it offers 35 % smaller footprint and improved thermal resistance (θJA ≈ 180 K/W vs. 145 K/W), favoring compact, thermally constrained designs.
Availability
74AHCT2G125GD,125 is available at Aetrix Electronics and suitable for industrial bus interface, automotive sensor hub, legacy system integration, and test equipment signal conditioning requiring stable component supply across extended temperature and mixed-voltage environments.
Supply support for 74AHCT2G125GD,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 focused on high-volume, high-reliability logic, analog, and MOSFET solutions, serving automotive, industrial, and consumer markets with ISO/TS 16949-certified manufacturing.
This device belongs to Nexperia's 74AHCT advanced high-speed CMOS logic family, engineered specifically for robust 5 V TTL-to-CMOS interfacing in harsh environments with extended temperature and ESD resilience.
FAQ
Is 74AHCT2G125GD,125 pin-compatible with 74AHC2G125GD,125?
Yes - both share identical XSON8 (SOT996-2) pinout and mechanical footprint. The key difference is input threshold: 74AHCT2G125GD,125 uses TTL-compatible inputs (VIH ≥ 2.0 V), while 74AHC2G125GD,125 requires CMOS thresholds (VIH ≥ 3.85 V at VCC = 5.5 V). Electrical substitution is only valid if driving source meets the respective input voltage requirements.
What is the maximum capacitive load this device can drive reliably?
The datasheet specifies timing performance up to 50 pF load capacitance at VCC = 5 V. For reliable signal integrity beyond 50 pF, add series termination (22–33 Ω) near the driver output and verify eye diagram compliance per JEDEC JESD68. Output current remains within ±8 mA limit up to 100 pF, but propagation delay increases linearly beyond 50 pF.
Does this part support partial power-down operation?
No - the device lacks Ioff (power-off protection) specification. When VCC = 0 V, inputs and outputs must be held at GND or ≤ 0.5 V to avoid parasitic powering or latch-up. For true partial power-down, consider 74LVC2G125 variants which specify Ioff ≤ 10 μA at VCC = 0 V.
Can 1OE and 2OE be tied together for single-enable operation?
Yes - connecting 1OE and 2OE simplifies control logic and maintains functional equivalence to a single dual-channel enable. No additional components are needed; however, ensure the combined enable net has adequate drive strength (e.g., from a 74LVC1G125) to meet tPLH/tPHL timing when switching both buffers simultaneously.
74AHCT2G125GD,125 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74AHCT
- Package/Case:
- 8-XFDFN
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 2
- 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
- Supplier Device Package:
- 8-XSON (2x3)
74AHCT2G125GD,125 FAQ
1.How can I place an order for 74AHCT2G125GD,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT2G125GD,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 74AHCT2G125GD,125 reliable?
The price and inventory of 74AHCT2G125GD,125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT2G125GD,125 is usually 5 days.
3.What payment methods are accepted for 74AHCT2G125GD,125?
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4.How is shipping managed for 74AHCT2G125GD,125?
74AHCT2G125GD,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT2G125GD,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 74AHCT2G125GD,125?
For technical support, including 74AHCT2G125GD,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT2G125GD,125 requirements.
6.How does Aetrix verify that 74AHCT2G125GD,125 is sourced from the original manufacturer or authorized distributors?
All 74AHCT2G125GD,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 74AHCT2G125GD,125 meets industry standards.
7.What is the process for return or replacement of 74AHCT2G125GD,125?
All 74AHCT2G125GD,125 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT2G125GD,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 74AHCT2G125GD,125 part is unused and in its original packaging.
Return procedure for 74AHCT2G125GD,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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