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NXP Semiconductors 74HC2G126DC,125
- Part No.:
- 74HC2G126DC,125
- Manufacturer:
- NXP Semiconductors
- Package:
- 8-VFSOP (0.091", 2.30mm Width)
- Datasheet:
-
74HC2G126DC,125.pdf
- Description:
- IC BUF NON-INVERT 6V 8VSSOP/US8
- Quantity:
- Payment:
- Shipping:
Inventory:4,118
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Product details
Overview
74HC2G126DC,125 from NXP Semiconductors is a dual CMOS buffer/line driver with independent 3-state outputs, operating from 2.0 V to 6.0 V supply, delivering symmetrical output impedance, balanced propagation delays (8–23 ns at VCC = 4.5–6.0 V), and high noise immunity for bus interface and data routing in industrial control systems.
For engineers reviewing the 74HC2G126DC,125 datasheet, 74HC2G126DC,125 pinout, 74HC2G126DC,125 application, or 74HC2G126DC,125 equivalent, this device supports voltage-level translation between mixed-logic subsystems, enables bidirectional bus isolation via OE-controlled tri-state outputs, and meets JEDEC 7A standards for interoperability in space-constrained PCB layouts.
Technical Context
The 74HC2G126DC,125 implements two independent non-inverting buffers, each with dedicated output-enable (nOE) inputs that place the corresponding output (nY) into high-impedance state when logic LOW. Inputs include clamp diodes enabling safe interfacing to voltages exceeding VCC using current-limiting resistors.
Its CMOS input thresholds (VIH = 3.15 V, VIL = 1.35 V at VCC = 4.5 V) and rail-to-rail output swing (VOH ≥ 4.4 V, VOL ≤ 0.33 V at IO = ±6 mA) ensure robust signal integrity across temperature (−40 °C to +125 °C) and supply variation, while low dynamic power dissipation (CPD = 11 pF per buffer) supports energy-efficient digital interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 6.0 V - Enables direct compatibility with 3.3 V and 5 V logic domains without level shifters. |
| Propagation Delay (tpd) | 8 ns (typ) at VCC = 6.0 V - Supports high-speed data routing in timing-critical control paths. |
| Output Drive Strength | ±6.0 mA at VCC = 4.5 V - Sufficient to drive standard TTL loads and moderate capacitive buses (≤50 pF). |
| Input Clamping Current | ±20 mA - Allows safe overvoltage input protection when used with external current-limiting resistors. |
| Operating Temperature | −40 °C to +125 °C - Qualified for extended industrial and under-hood automotive auxiliary applications. |
| ESD Protection | HBM > 2000 V, MM > 200 V - Reduces susceptibility to handling damage during assembly and field operation. |
| Power Dissipation Capacitance | 11 pF per buffer (enabled), 1 pF (disabled) - Enables accurate dynamic power estimation in low-power system budgets. |
Pinout & Package
VSSOP8 package (SOT765-1): plastic very thin shrink small outline, 8-lead, body width 2.3 mm, lead pitch 0.5 mm, pin 1 indicator at lower-left corner below marking code "H26".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7 | 1OE, 2OE | Active-LOW enable inputs - Assert LOW to activate respective buffer output; HIGH places output in high-Z state. |
| 2, 5 | 1A, 2A | Non-inverting data inputs - Accept CMOS-level signals; clamp diodes permit safe overvoltage biasing. |
| 3, 6 | 1Y, 2Y | Buffered non-inverting outputs - Deliver rail-to-rail swing with symmetrical rise/fall times (5–15 ns). |
| 4 | GND | Ground reference (0 V) - Must be low-impedance connection to minimize switching noise coupling. |
| 8 | VCC | Positive supply - Decoupling capacitor (100 nF ceramic) required within 5 mm of pin for stable operation. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | 2.0–6.0 V operation eliminates need for separate voltage regulators in mixed-supply systems. |
| Independent 3-State Control | Dual OE inputs allow selective bus arbitration-only one buffer enabled at a time to prevent contention. |
| Symmetrical Output Impedance | Matched pull-up/pull-down strength ensures consistent rise/fall times and reduced signal distortion. |
| High Noise Immunity | Typical VIH/VIL margins > 1.8 V at VCC = 4.5 V suppress false triggering in electrically noisy environments. |
| Low Static Current | ICC ≤ 20 µA at VCC = 6.0 V - Enables use in always-on monitoring circuits without significant battery drain. |
Applications
| Industrial PLC I/O Expansion | Embedded Microcontroller Bus Isolation |
|---|---|
|
Use Scenario: Isolating microcontroller GPIOs from noisy 24 V industrial sensor/actuator buses. IC Role / Device Role / Timing Role: Dual buffer acts as directionally agnostic signal conditioner, with OE pins synchronized to MCU write strobes to gate data flow. Use Value: Prevents back-driving and ground bounce during hot-swap events while maintaining <23 ns propagation delay for real-time response. |
Use Scenario: Enabling shared SPI or parallel memory bus between multiple MCUs or peripherals. IC Role / Device Role / Timing Role: Provides tri-state isolation on data lines, allowing one master to drive the bus while others enter high-Z mode. Use Value: Eliminates need for discrete MOSFET switches; symmetrical output impedance ensures clean signal edges across all enabled channels. |
| Automotive Body Control Module (BCM) Signal Routing | Test Equipment Digital Pattern Generator Interface |
|
Use Scenario: Level-shifting and buffering LIN or CAN subsystem control signals in non-safety-critical BCM subassemblies. IC Role / Device Role / Timing Role: Interfaces 3.3 V MCU outputs to 5 V legacy dashboard displays or lamp drivers via buffered, clamped inputs. Use Value: Clamp diodes + current-limiting resistors protect against transients up to 7 V, meeting ISO 7637-2 Pulse 1/2a requirements. |
Use Scenario: Driving high-capacitance test fixture loads (≥50 pF) from FPGA-based pattern generators. IC Role / Device Role / Timing Role: Acts as low-skew repeater stage, with matched tPLH/tPHL ensuring deterministic setup/hold timing at DUT inputs. Use Value: 11 pF CPD enables precise dynamic power modeling; 8 ns tpd at 6 V supports >25 MHz pattern rates with margin. |
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 |
|---|---|---|---|
| SN74LVC2G126DBVR | TTL-compatible inputs (VIL = 0.7 V, VIH = 1.7 V at 3.3 V); lower max VCC (5.5 V); higher drive (±24 mA). | Better suited for 3.3 V-only systems with aggressive fanout; not rated for 6 V operation or −40 °C to +125 °C extended range. | Select when interfacing to older LVTTL logic or requiring higher sink/source current at 3.3 V. |
| 74AHC2G126DC,125 | Faster propagation (4.5 ns typ at VCC = 5 V); higher ICC (max 40 µA); identical pinout and VSSOP8 package. | Preferred for ultra-low-latency paths where <10 ns tpd is mandatory; consumes more quiescent power. | Choose when minimizing propagation delay is critical and supply headroom allows higher static current. |
Compared with SN74LVC2G126DBVR and 74AHC2G126DC,125, the 74HC2G126DC,125 offers broader supply flexibility (2–6 V), extended temperature qualification (−40 °C to +125 °C), and lower static power-making it optimal for industrial and multi-voltage embedded designs where timing margin exceeds 8 ns.
Availability
74HC2G126DC,125 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, embedded microcontroller bus isolation, and automotive body control module signal routing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HC2G126DC,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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The 74HC2G126DC,125 belongs to NXP's HC logic family-designed for low-power, high-noise-immunity digital interfacing in space-constrained industrial and automotive-adjacent systems.
FAQ
What is the maximum supply voltage rating for the 74HC2G126DC,125?
The 74HC2G126DC,125 has an absolute maximum supply voltage (VCC) of +7.0 V, but its recommended operating range is 2.0 V to 6.0 V. Operation above 6.0 V risks violating recommended conditions and may accelerate parametric drift or reduce long-term reliability, even if within absolute limits.
Does the 74HC2G126DC,125 support mixed-voltage interfacing?
Yes-the 74HC2G126DC,125 supports mixed-voltage interfacing via input clamp diodes. When driven by signals exceeding VCC (e.g., 5 V inputs into a 3.3 V system), external current-limiting resistors must be used to keep IIK within ±20 mA, enabling safe level translation without additional ICs.
What is the function of the OE pins on the 74HC2G126DC,125?
The 1OE and 2OE pins on the 74HC2G126DC,125 are active-LOW enable inputs. When pulled LOW, the corresponding buffer (1A→1Y or 2A→2Y) passes the input signal; when HIGH, the output enters high-impedance (tri-state) mode, electrically disconnecting the output from the bus.
Is the 74HC2G126DC,125 qualified for automotive applications?
The 74HC2G126DC,125 is specified for −40 °C to +125 °C operation and meets JEDEC 7A standards, but NXP does not classify it as automotive-qualified. It may be used in non-safety-critical automotive subsystems (e.g., body control modules) provided full system-level validation is performed by the customer.
How does the 74HC2G126DC,125 differ from the 74HCT2G126DC,125?
The 74HC2G126DC,125 uses CMOS input thresholds (VIH ≈ 70% VCC), while the 74HCT2G126DC,125 uses TTL-compatible inputs (VIH = 2.0 V min at VCC = 4.5–5.5 V). Both share identical pinout, package, and output characteristics-but only the HCT variant reliably accepts 5 V TTL signals at 3.3 V supply.
74HC2G126DC,125 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74HC
- Package/Case:
- 8-VFSOP (0.091", 2.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 7.8mA, 7.8mA
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
74HC2G126DC,125 FAQ
1.How can I place an order for 74HC2G126DC,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC2G126DC,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 74HC2G126DC,125 reliable?
The price and inventory of 74HC2G126DC,125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC2G126DC,125 is usually 5 days.
3.What payment methods are accepted for 74HC2G126DC,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC2G126DC,125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC2G126DC,125?
74HC2G126DC,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC2G126DC,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 74HC2G126DC,125?
For technical support, including 74HC2G126DC,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC2G126DC,125 requirements.
6.How does Aetrix verify that 74HC2G126DC,125 is sourced from the original manufacturer or authorized distributors?
All 74HC2G126DC,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 74HC2G126DC,125 meets industry standards.
7.What is the process for return or replacement of 74HC2G126DC,125?
All 74HC2G126DC,125 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC2G126DC,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 74HC2G126DC,125 part is unused and in its original packaging.
Return procedure for 74HC2G126DC,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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