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NXP Semiconductors 74AHCT1G02GV,125
- Part No.:
- 74AHCT1G02GV,125
- Manufacturer:
- NXP Semiconductors
- Category:
- Gates and Inverters
- Package:
- -
- Datasheet:
-
74AHCT1G02GV,125.pdf
- Description:
- IC GATE NOR
- Quantity:
- Payment:
- Shipping:
Inventory:90,000
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Product details
Overview
74AHCT1G02GV,125 from Nexperia is a single 2-input NOR gate logic IC with TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V), operating from 4.5 V to 5.5 V, rated for -40 °C to +125 °C, and housed in the SC-74A (SOT753) 5-pin surface-mount package. It serves as a level-translating combinational logic element in mixed-voltage digital control paths.
For engineers reviewing the 74AHCT1G02GV,125 datasheet, 74AHCT1G02GV,125 pinout, 74AHCT1G02GV,125 application, or 74AHCT1G02GV,125 equivalent, this device is selected for low-power, high-noise-immunity NOR logic in industrial microcontroller I/O expansion, sensor interface conditioning, and power sequencing control where TTL-level compatibility and overvoltage-tolerant inputs are required.
Technical Context
This device implements a single 2-input NOR function with symmetrical output impedance and balanced propagation delays (tpd = 3.5–7.0 ns at VCC = 5.0 V, CL = 15–50 pF). Its TTL-compatible input thresholds enable direct interfacing with legacy 5 V logic families while maintaining CMOS power efficiency.
Inputs tolerate up to 5.5 V independent of VCC, supporting mixed-supply translation without external level shifters. The logic diagram confirms active-low NOR behavior: Y = NOT(A OR B), with static drive capability of ±8 mA at VCC = 4.5 V and guaranteed VOL ≤ 0.55 V under full load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Single 2-input NOR gate (Y = NOT(A OR B)) - provides basic negative-OR decision logic in control signal routing. |
| Supply Voltage Range | 4.5 V to 5.5 V - ensures compatibility with standard 5 V digital systems and stable operation across rail tolerance. |
| Input Thresholds | VIH ≥ 2.0 V, VIL ≤ 0.8 V (VCC = 4.5–5.5 V) - guarantees reliable recognition of TTL-level inputs without external biasing. |
| Propagation Delay | 3.5 ns (typ) to 7.0 ns (max) at VCC = 5.0 V, CL = 15–50 pF - enables use in sub-100 MHz synchronous control paths. |
| Output Drive | ±8.0 mA (VOH/VOL specified at IO = ±8 mA) - sufficient to drive multiple 74-series inputs or small capacitive loads directly. |
| Operating Temperature | -40 °C to +125 °C - supports deployment in extended-temperature industrial and automotive under-hood applications. |
| Input Overvoltage Tolerance | Inputs withstand up to 5.5 V regardless of VCC - eliminates need for external clamping diodes when interfacing higher-voltage signals. |
Pinout & Package
74AHCT1G02GV,125 is packaged in SC-74A (SOT753), a 5-pin plastic surface-mounted package with 1.1 mm × 1.3 mm body size, 0.65 mm lead pitch, and exposed pad-less construction optimized for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (B) | Data input B | One of two active-low logic inputs; accepts TTL/CMOS levels up to 5.5 V independent of VCC. |
| 2 (A) | Data input A | Second active-low logic input; electrically identical to Pin 1; enables dual-input NOR evaluation. |
| 3 (GND) | Ground reference | 0 V return path for all internal circuitry and output current; must be low-impedance for noise immunity. |
| 4 (Y) | Data output Y | Inverted OR result (Y = NOT(A OR B)); sinks or sources up to 8 mA with rail-to-rail swing. |
| 5 (VCC) | Positive supply | Main power rail (4.5–5.5 V); powers internal logic and output stage; bypass capacitor recommended. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible input thresholds | Enables plug-in replacement of legacy 74LS02 in 5 V systems without redesigning input bias networks. |
| Overvoltage-tolerant inputs (5.5 V) | Allows safe connection to 5 V signals even when VCC is powered down or at lower voltage, preventing latch-up. |
| Symmetrical output impedance | Ensures matched rise/fall times and reduces signal distortion in timing-critical control lines. |
| High noise immunity (Δt/ΔV = 20 ns/V at VCC = 5 V) | Rejects fast transients on input lines up to 20 ns/V slew rate, improving robustness in noisy industrial environments. |
| Low ICC (≤ 40 μA max at VCC = 5.5 V) | Minimizes quiescent power in always-on monitoring circuits, extending battery life in portable diagnostics. |
Applications
| Industrial PLC Input Conditioning | Microcontroller GPIO Expansion |
|---|---|
|
Use Scenario: Isolating and debouncing mechanical switch inputs in programmable logic controllers before feeding into MCU interrupt pins. IC Role / Device Role / Timing Role: NOR gate performs wired-OR aggregation and noise filtering; propagation delay < 7 ns ensures deterministic response within 100 kHz scan cycles. Use Value: Eliminates need for external Schmitt triggers or RC filters by leveraging inherent hysteresis and overvoltage tolerance on field-wire inputs. |
Use Scenario: Expanding limited GPIO count on an ARM Cortex-M0+ MCU to manage eight discrete status LEDs using three 74AHCT1G02GV,125 devices. IC Role / Device Role / Timing Role: Implements active-low LED enable logic via NOR-based decoding; symmetrical drive supports uniform LED brightness. Use Value: Reduces BOM cost versus dedicated I/O expanders while maintaining full-speed toggle capability (< 10 ns effective latency). |
| Power Sequencing Control | Sensor Interface Signal Gating |
|
Use Scenario: Generating "ALL_RAILS_READY" assertion only after three independent DC-DC converter OK signals are simultaneously asserted. IC Role / Device Role / Timing Role: NOR gate acts as inverted AND: Y = NOT(NOT(A) OR NOT(B) OR NOT(C)) → A AND B AND C; operates across full -40 °C to +125 °C range. Use Value: Guarantees fail-safe power-up coordination without software dependency; overvoltage tolerance accommodates varying OK-signal voltage domains. |
Use Scenario: Enabling analog sensor data acquisition only during valid measurement windows, gated by MCU timer and ADC busy flag. IC Role / Device Role / Timing Role: NOR combines timer-active and ADC-idle signals to generate clean, glitch-free sample-enable pulse with sub-10 ns jitter. Use Value: Prevents corrupted conversions by eliminating race conditions between control logic and analog subsystem timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 2-input NOR gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74AHCT1G02GW,125 | TSSOP5 (SOT353-1) package: 2.2 mm × 1.3 mm body, 0.65 mm pitch, thermal pad not present. | Higher thermal resistance (Ptot derates at 3.3 mW/K above 74 °C vs. 3.8 mW/K above 85 °C for GV), less board-area efficient. | Select GW if existing layout uses TSSOP5 footprints or requires slightly better moisture sensitivity rating (MSL 1 vs. MSL 3 for GV). |
| SN74LVC1G02DBVR | CMOS input thresholds (VIH = 0.7×VCC), 1.65–5.5 V supply, lower ICC (10 μA typ), but no overvoltage tolerance. | Cannot interface safely with 5 V signals when VCC < 5 V; unsuitable for mixed-voltage translation without external components. | Select LVC1G02 only in single-supply 3.3 V systems where input overvoltage risk is absent and ultra-low static power is critical. |
Compared with 74AHCT1G02GV,125, the GW variant offers identical logic and electrical specs but differs in thermal profile and footprint; the SN74LVC1G02DBVR trades overvoltage safety for wider VCC range and lower ICC, making it viable only in homogeneous 3.3 V designs.
Availability
74AHCT1G02GV,125 is available at Aetrix Electronics and suitable for industrial PLC input conditioning, microcontroller GPIO expansion, power sequencing control, and sensor interface signal gating requiring stable component supply across extended temperature ranges.
Supply support for 74AHCT1G02GV,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, discrete, and MOSFET solutions with emphasis on reliability, efficiency, and manufacturability for industrial and automotive markets.
The 74AHCT series targets robust, pin-compatible replacements for legacy TTL logic in modern 5 V systems, combining CMOS power efficiency with TTL input compatibility and extended temperature operation.
FAQ
Is 74AHCT1G02GV,125 compatible with 3.3 V microcontrollers?
No - the 74AHCT1G02GV,125 requires VCC between 4.5 V and 5.5 V and features TTL input thresholds (VIH ≥ 2.0 V), making it incompatible with 3.3 V-only systems. For 3.3 V interfaces, consider the 74AHC1G02GV,125 (CMOS thresholds) or SN74LVC1G02DBVR (1.65–5.5 V supply, VIH = 0.7×VCC).
What is the maximum capacitive load this device can drive reliably?
The device is characterized up to 50 pF (tpd tested at CL = 15 pF and 50 pF), with CPD = 19 pF. Driving > 50 pF may increase propagation delay nonlinearly and degrade edge integrity; for loads > 75 pF, add a series resistor (22–47 Ω) near the output to dampen ringing and maintain signal integrity.
Does this part support hot insertion or live swapping?
No - while inputs tolerate 5.5 V regardless of VCC, the device lacks explicit hot-swap protection circuitry. Powering VCC after applying input signals risks undefined states and potential current backflow through input clamps; always sequence VCC before enabling inputs in system-level designs.
How does the overvoltage tolerance work on the inputs?
Input pins include integrated clamping diodes to VCC and GND, allowing safe operation with input voltages up to 5.5 V even when VCC is 0 V or at reduced voltage. This is validated per JESD78 Class II Level A latch-up testing (>100 mA) and enables direct connection to 5 V buses in partial-power-down scenarios.
74AHCT1G02GV,125 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Circuits:
- -
- Number of Inputs:
- -
- Features:
- -
- Voltage - Supply:
- -
- Current - Quiescent (Max):
- -
- Current - Output High, Low:
- -
- Input Logic Level - Low:
- -
- Input Logic Level - High:
- -
- Max Propagation Delay @ V, Max CL:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
74AHCT1G02GV,125 FAQ
1.How can I place an order for 74AHCT1G02GV,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT1G02GV,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 74AHCT1G02GV,125 reliable?
The price and inventory of 74AHCT1G02GV,125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT1G02GV,125 is usually 5 days.
3.What payment methods are accepted for 74AHCT1G02GV,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT1G02GV,125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT1G02GV,125?
74AHCT1G02GV,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT1G02GV,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 74AHCT1G02GV,125?
For technical support, including 74AHCT1G02GV,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT1G02GV,125 requirements.
6.How does Aetrix verify that 74AHCT1G02GV,125 is sourced from the original manufacturer or authorized distributors?
All 74AHCT1G02GV,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 74AHCT1G02GV,125 meets industry standards.
7.What is the process for return or replacement of 74AHCT1G02GV,125?
All 74AHCT1G02GV,125 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT1G02GV,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 74AHCT1G02GV,125 part is unused and in its original packaging.
Return procedure for 74AHCT1G02GV,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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