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NXP Semiconductors 74HCT2G02GD,125
- Part No.:
- 74HCT2G02GD,125
- Manufacturer:
- NXP Semiconductors
- Category:
- Gates and Inverters
- Package:
- 8-XFDFN
- Datasheet:
-
74HCT2G02GD,125.pdf
- Description:
- IC GATE NOR 2CH 2-INP 8-XSON
- Quantity:
- Payment:
- Shipping:
Inventory:39,000
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Product details
Overview
74HCT2G02GD,125 from Nexperia is a dual 2-input NOR gate logic IC designed for level translation between TTL and CMOS systems, operating at 4.5 V to 5.5 V supply, with propagation delay of 12 ns (typ) at 5 V, output drive capability of ±4.0 mA, and specified over -40 °C to +125 °C for industrial control and sensor interface applications.
For engineers reviewing the 74HCT2G02GD,125 datasheet, 74HCT2G02GD,125 pinout, 74HCT2G02GD,125 application, or 74HCT2G02GD,125 equivalent, this device serves as a compact, low-power, TTL-compatible logic gate for signal inversion and combinatorial logic in space-constrained PCBs requiring robust noise immunity and rail-to-rail input clamping.
Technical Context
The 74HCT2G02GD,125 implements two independent NOR gates with TTL-level input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V), enabling direct interfacing with legacy 5 V TTL outputs without level shifters. Each gate exhibits symmetrical propagation delay (tpd = tPLH = tPHL) and transition time (tt = tTLH = tTHL).
Input clamp diodes allow safe operation with input voltages exceeding VCC when used with current-limiting resistors. The device supports dynamic power calculation via CPD = 10 pF and complies with JEDEC JESD78 Class II Level B latch-up immunity (>100 mA) and JS-001/JS-002 ESD ratings (HBM >2000 V, CDM >1000 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with standard 5 V TTL and mixed-voltage logic systems |
| Propagation Delay | 12 ns (typ) at VCC = 5 V, CL = 15 pF - enables reliable timing in sub-100 MHz digital control paths |
| Output Drive | ±4.0 mA at VOH/VOL - sufficient to drive multiple 74-series inputs or small capacitive loads (≤30 pF) |
| Input Thresholds | VIH ≥ 2.0 V, VIL ≤ 0.8 V - guarantees TTL logic level recognition without external biasing |
| Operating Temperature | -40 °C to +125 °C - qualified for under-hood automotive modules and industrial motor drives |
| Power Dissipation | CPD = 10 pF - allows accurate dynamic power estimation (PD = CPD × VCC² × fi × N) for thermal budgeting |
| ESD Protection | HBM >2000 V, CDM >1000 V - meets IEC 61000-4-2 system-level robustness requirements |
Pinout & Package
XSON8 (SOT996-2) plastic extremely thin small outline package; 8 leads; body size 1.35 × 1.35 mm; pitch 0.5 mm; no lead; exposed die pad for thermal enhancement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1A | First NOR gate input A - accepts TTL/CMOS logic levels with internal clamp diodes |
| 2 | 1B | First NOR gate input B - electrically identical to Pin 1; dual-input NOR requires both asserted LOW for HIGH output |
| 3 | 1Y | First NOR gate output Y - active-LOW logic function: Y = NOT(A OR B); drives downstream CMOS/TTL loads |
| 4 | GND | Ground reference - must be low-impedance connection to minimize switching noise coupling |
| 5 | 2Y | Second NOR gate output Y - independent of first gate; supports dual-channel logic isolation |
| 6 | 2B | Second NOR gate input B - shares same electrical specs as Pin 2; no crosstalk between gates |
| 7 | 2A | Second NOR gate input A - fully decoupled from Pin 1; enables two independent NOR functions in one footprint |
| 8 | VCC | Positive supply - must be bypassed with 100 nF ceramic capacitor near package for stable high-speed operation |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | VIH ≥ 2.0 V and VIL ≤ 0.8 V at 4.5–5.5 V - eliminates need for external level-shifting resistors in 5 V systems |
| Input clamp diodes | Enables safe interface to voltages up to VCC + 0.5 V using series current-limiting resistors - protects against overvoltage transients |
| High noise immunity | Typical noise margin >1.2 V at VCC = 5 V - prevents false triggering in electrically noisy industrial environments |
| Latch-up immunity | Exceeds 100 mA per JESD78 Class II Level B - ensures robust operation during power sequencing or ESD events |
| Ultra-compact XSON8 | 1.35 × 1.35 mm footprint - saves >60% board area vs. TSSOP8 while maintaining thermal performance via exposed pad |
Applications
| Industrial PLC Input Conditioning | Automotive Body Control Module Logic |
|---|---|
|
Use Scenario: Isolating and conditioning discrete switch inputs (e.g., door open/close, hood latch) before feeding into microcontroller GPIOs. IC Role / Device Role / Timing Role: Dual NOR gate performs active-LOW signal inversion and wired-OR combining of multiple sensor inputs. Use Value: Eliminates need for discrete pull-up resistors and Schmitt triggers; reduces BOM count by integrating two independent logic functions in 1.35 mm². |
Use Scenario: Implementing fail-safe interlock logic between seatbelt sensor, ignition status, and airbag deployment enable signals. IC Role / Device Role / Timing Role: Performs real-time combinatorial logic to assert safety-critical disable signals when any fault condition occurs. Use Value: Guaranteed 12 ns propagation delay ensures deterministic response within ASIL-B timing budgets; -40 °C to +125 °C rating matches under-dash temperature profile. |
| IoT Sensor Node Signal Gating | Medical Device Power Sequencing |
|
Use Scenario: Enabling/disabling analog sensor excitation current based on motion detection and battery voltage thresholds. IC Role / Device Role / Timing Role: NOR gate combines motion interrupt (LOW-active) and low-battery flag (LOW-active) to gate enable line to sensor driver. Use Value: Ultra-low ICC (≤10 μA) extends battery life; XSON8 package enables integration into wearable-size PCBs with minimal layout impact. |
Use Scenario: Controlling sequential power-up of FPGA, ADC, and RF transceiver rails in portable diagnostic equipment. IC Role / Device Role / Timing Role: Implements priority-based enable logic where multiple "ready" signals must be LOW before next rail activates. Use Value: Input clamp diodes tolerate voltage overshoot during hot-swap events; 100 mA latch-up immunity prevents latch-up during rail collapse. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 2-input NOR gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC2G02DPWR | Wider supply range (1.65–5.5 V), lower VIH (1.7 V min), higher speed (7.5 ns typ at 3.3 V) | Better suited for mixed 3.3 V/5 V systems; not TTL-input compatible | Select when interfacing with 3.3 V FPGAs or when lower VCC operation is required |
| 74AHC2G02GW,125 | CMOS input thresholds (VIH = 0.7×VCC), faster propagation (6.5 ns typ at 5 V), higher drive (±8 mA) | Requires level-shifting for TTL sources; unsuitable for direct TTL interface | Select when maximum speed and drive strength are critical and all upstream logic is CMOS |
Compared with SN74LVC2G02DPWR and 74AHC2G02GW,125, the 74HCT2G02GD,125 uniquely provides TTL-level input compatibility at 5 V without external components, making it the only drop-in solution for legacy 5 V controller designs requiring dual NOR functionality in ultra-compact XSON8 packaging.
Availability
74HCT2G02GD,125 is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and medical diagnostics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HCT2G02GD,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 delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial and automotive applications.
The 74HCT2G02GD,125 belongs to Nexperia's HCT logic family, engineered specifically for seamless interoperability between TTL and CMOS systems in space- and power-constrained embedded designs.
FAQ
What is the maximum allowable input voltage for 74HCT2G02GD,125 when VCC = 5.0 V?
The absolute maximum input voltage is VCC + 0.5 V = 5.5 V, enabled by integrated input clamp diodes. Exceeding this requires external current-limiting resistors to restrict IIK to ±20 mA per pin, as defined in Table 5 of the datasheet. Operation above 5.5 V risks permanent damage even with current limiting.
Can 74HCT2G02GD,125 operate reliably at 3.3 V supply?
No - the 74HCT variant is specified only for 4.5 V to 5.5 V operation. At 3.3 V, input thresholds (VIH ≥ 2.0 V) become marginal relative to VCC, risking incorrect logic interpretation. For 3.3 V systems, use the pin-compatible 74LVC2G02 or 74AHC2G02 variants instead.
Does the XSON8 package require solder paste stencil adjustments versus standard SOIC?
Yes - the XSON8 (SOT996-2) has a 0.5 mm pitch and no leads, requiring a 0.12 mm thick stencil with 1:1 aperture ratio and nickel-plated walls for consistent paste release. The exposed thermal pad must be printed with 5–7 solder paste dots (0.25 mm diameter) to ensure mechanical stability and thermal conduction.
How does the 74HCT2G02GD,125 handle floating inputs?
Inputs must never be left floating: unconnected 1A/1B/2A/2B pins cause undefined output states and increased ICC due to internal MOSFET threshold uncertainty. Always tie unused inputs to VCC or GND via ≤10 kΩ resistors; the internal clamp diodes do not provide pull-up/pull-down functionality.
74HCT2G02GD,125 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74HCT
- Package/Case:
- 8-XFDFN
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- NOR Gate
- Number of Circuits:
- 2
- Number of Inputs:
- 2
- Features:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Max):
- 20 µA
- Current - Output High, Low:
- 4mA, 4mA
- Input Logic Level - Low:
- 0.8V
- Input Logic Level - High:
- 2V
- Max Propagation Delay @ V, Max CL:
- 12ns @ 4.5V, 50pF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-XSON (2x3)
74HCT2G02GD,125 FAQ
1.How can I place an order for 74HCT2G02GD,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT2G02GD,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 74HCT2G02GD,125 reliable?
The price and inventory of 74HCT2G02GD,125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT2G02GD,125 is usually 5 days.
3.What payment methods are accepted for 74HCT2G02GD,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT2G02GD,125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT2G02GD,125?
74HCT2G02GD,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT2G02GD,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 74HCT2G02GD,125?
For technical support, including 74HCT2G02GD,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT2G02GD,125 requirements.
6.How does Aetrix verify that 74HCT2G02GD,125 is sourced from the original manufacturer or authorized distributors?
All 74HCT2G02GD,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 74HCT2G02GD,125 meets industry standards.
7.What is the process for return or replacement of 74HCT2G02GD,125?
All 74HCT2G02GD,125 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT2G02GD,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 74HCT2G02GD,125 part is unused and in its original packaging.
Return procedure for 74HCT2G02GD,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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