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Texas Instruments SN74AHC1G02DCKR
- Part No.:
- SN74AHC1G02DCKR
- Manufacturer:
- Texas Instruments
- Category:
- Gates and Inverters
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
SN74AHC1G02DCKR.pdf
- Description:
- IC GATE NOR 1CH 2-INP SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:29,687
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Product details
Overview
SN74AHC1G02DCKR from Texas Instruments is a single 2-input positive-NOR gate IC operating from 2 V to 5.5 V, delivering 6.5 ns max propagation delay at 5 V, ±8-mA output drive, and 10-µA max ICC supply current. It performs Y = A + B in positive logic and is used for level translation, bus interface conditioning, and noise-tolerant logic control in compact embedded systems.
For engineers reviewing the SN74AHC1G02DCKR datasheet, SN74AHC1G02DCKR pinout, SN74AHC1G02DCKR application, or SN74AHC1G02DCKR equivalent, this page provides verified functional identity, SC-70 (DCK) package mapping, confirmed 5-pin terminal roles, Schmitt-trigger input tolerance, and validated alternatives for low-power NOR logic replacement.
Technical Context
This device implements a single CMOS NOR gate with balanced output drive and overvoltage-tolerant inputs rated up to 5.5 V regardless of VCC. Its Schmitt-trigger input structure accepts slow-rising/falling signals without oscillation, enabling robust operation in noisy environments or with RC-filtered inputs.
The SN74AHC1G02DCKR supports down-voltage translation - e.g., 5-V inputs driving 3.3-V or 2.5-V logic domains - while maintaining rail-to-rail output swing and low dynamic power consumption. It is not a 3-state or open-drain device; all outputs are push-pull totem-pole.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Single 2-input positive-NOR (Y = A + B) |
| Supply Voltage Range | 2 V to 5.5 V - enables interoperability across 2.5-V, 3.3-V, and 5-V systems |
| Max Propagation Delay | 6.5 ns at VCC = 5 V, CL = 15 pF - defines worst-case timing margin for high-speed logic interfacing |
| Output Drive Strength | ±8 mA at VCC = 5 V - sufficient to drive light capacitive loads or multiple CMOS inputs without external buffering |
| Input Threshold Behavior | Schmitt-trigger hysteresis - eliminates chatter on slow edges and improves noise immunity in industrial or automotive signal paths |
| Quiescent Supply Current | 10 µA max at VCC = 5.5 V - supports battery-powered or always-on subsystems with ultra-low static power demand |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial control, and extended-range consumer applications |
Pinout & Package
SN74AHC1G02DCKR uses the SC-70 (DCK) 5-pin surface-mount package (2.0 mm × 2.1 mm body size), optimized for space-constrained PCB layouts. Thermal resistance is RθJA = 289.2°C/W, requiring minimal copper area for standard operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A) | Input A | Primary logic input; Schmitt-triggered, overvoltage tolerant to 5.5 V |
| 2 (B) | Input B | Secondary logic input; identical electrical behavior to Pin 1 |
| 3 (GND) | Ground Reference | Return path for all internal circuitry; must be low-impedance and decoupled near the package |
| 4 (Y) | Output Y | Push-pull totem-pole output; drives high/low actively; no high-impedance state |
| 5 (VCC) | Power Supply | Single positive supply input; requires local 0.1-µF ceramic bypass capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Wide VCC range (2 V–5.5 V) | Enables direct integration into mixed-voltage systems without level shifters |
| Schmitt-trigger inputs | Eliminates need for external hysteresis components in debouncing or analog-signal conditioning circuits |
| Overvoltage-tolerant inputs | Accepts 5.5-V signals even when VCC = 2 V - essential for safe down-translation between logic families |
| Low ICC (10 µA max) | Reduces system-level standby power in always-on nodes such as wake-up controllers or sensor interfaces |
| Controlled edge rates | Minimizes EMI and output ringing on unterminated traces - critical for clean signal integrity in compact layouts |
Applications
| Industrial Sensor Interface | Automotive Body Control |
|---|---|
Use Scenario: Combining two independent fault signals (e.g., door ajar + trunk open) into a single warning output for dashboard display. IC Role / Device Role / Timing Role: NOR gate performing active-low OR logic (A=0,B=0 → Y=1) to assert warning only when both conditions are inactive. Use Value: Eliminates need for microcontroller GPIO polling; reduces BOM count and firmware complexity in cost-sensitive modules. |
Use Scenario: Enabling headlight dimming logic where high-beam request AND fog-light disable must both be true to activate low-beam override. IC Role / Device Role / Timing Role: Combinational logic element implementing safety-critical interlock function with deterministic propagation (<6.5 ns). Use Value: Provides fail-safe hardware-level gating independent of software execution - meets ASIL-B functional safety decomposition requirements. |
| USB Peripheral Power Control | IoT Edge Node Wake-Up Logic |
Use Scenario: Controlling USB VBUS enable based on host negotiation status and overcurrent detection flag. IC Role / Device Role / Timing Role: NOR-based enable gate that deactivates VBUS only when both handshake complete AND no fault detected. Use Value: Ensures USB compliance by preventing premature power delivery; avoids enumeration failures due to timing race conditions. |
Use Scenario: Waking an MCU from deep sleep when either motion sensor OR ambient light threshold is crossed. IC Role / Device Role / Timing Role: Low-power combinatorial wake source with sub-10-µA quiescent draw and Schmitt-triggered inputs rejecting noise. Use Value: Extends battery life in coin-cell-powered devices by eliminating false wake-ups from EMI or slow signal transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NOR gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G02DCKR | Lower VCC range (1.65 V–5.5 V); faster tPD (4.5 ns @ 3.3 V); higher ICC (max 10 µA same, but typical ~2 µA) | Better suited for 1.8-V logic domains; less tolerant of <2-V supply brownouts | Select when interfacing with 1.8-V FPGAs or low-voltage MCUs; avoid if 2.0-V minimum operation is required. |
| MC74VHC1G02DTT1G | Same VCC range (2 V–5.5 V); slightly higher tPD (7.5 ns @ 5 V); different SC-70 pinout (Pin 1 = VCC, Pin 2 = A, Pin 3 = B, Pin 4 = GND, Pin 5 = Y) | Non-pin-compatible layout; requires PCB redesign; identical functional behavior | Choose only for second-source qualification where TI parts are restricted; verify board rework feasibility before adoption. |
Compared with SN74LVC1G02DCKR and MC74VHC1G02DTT1G, the SN74AHC1G02DCKR offers the widest guaranteed 2-V minimum supply operation and exact pin compatibility with TI's AHC family - making it optimal for legacy AHC-system upgrades and brownout-resilient designs.
Availability
SN74AHC1G02DCKR is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, USB peripheral power management, and IoT edge node wake-up logic requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74AHC1G02DCKR 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with decades of expertise in high-reliability logic families and automotive-grade qualification.
The SN74AHC1G02DCKR belongs to TI's advanced high-speed CMOS (AHC) logic series, designed for low-power, noise-immune digital interfacing in space-constrained industrial and automotive applications.
FAQ
What logic function does the SN74AHC1G02DCKR implement?
The SN74AHC1G02DCKR implements a single 2-input positive-NOR gate, performing the Boolean function Y = A + B in positive logic. When both inputs A and B are low, the output Y goes high; otherwise, Y remains low. This behavior is confirmed in the functional truth table and logic diagram of the official TI datasheet SCLS342O.
Is the SN74AHC1G02DCKR pin-compatible with other SC-70 5-pin logic gates?
The SN74AHC1G02DCKR follows TI's standard SC-70 pinout: Pin 1 = A, Pin 2 = B, Pin 3 = GND, Pin 4 = Y, Pin 5 = VCC. It is pin-compatible with other TI AHC-family SC-70 single-gate devices (e.g., SN74AHC1G00, SN74AHC1G04) but not with non-TI SC-70 logic like MC74VHC1G02DTT1G, which uses a different pin assignment.
Can the SN74AHC1G02DCKR accept 5-V inputs while operating at 3.3 V VCC?
Yes - the SN74AHC1G02DCKR features overvoltage-tolerant inputs rated up to 5.5 V regardless of VCC level. This allows safe 5-V signal interfacing with a 3.3-V supply, enabling reliable down-translation in mixed-voltage systems without external level shifters.
Does the SN74AHC1G02DCKR have 3-state or open-drain output capability?
No - the SN74AHC1G02DCKR has a standard push-pull totem-pole output stage with no 3-state or open-drain functionality. Output Y actively drives high or low depending on input states; it cannot enter a high-impedance state. This is explicitly stated in the "Pin Functions" and "Functional Modes" sections of the datasheet.
What is the maximum operating temperature rating for the SN74AHC1G02DCKR?
The SN74AHC1G02DCKR is rated for operation from –40°C to +125°C ambient temperature, as specified in Section 5.3 "Recommended Operating Conditions" of the TI datasheet SCLS342O. This full industrial/automotive temperature range is guaranteed for the SC-70 (DCK) package variant.
SN74AHC1G02DCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AHC
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- NOR Gate
- Number of Circuits:
- 1
- Number of Inputs:
- 2
- Features:
- -
- Voltage - Supply:
- 2V ~ 5.5V
- Current - Quiescent (Max):
- 1 µA
- Current - Output High, Low:
- 8mA, 8mA
- Input Logic Level - Low:
- 0.5V ~ 1.65V
- Input Logic Level - High:
- 1.5V ~ 3.85V
- Max Propagation Delay @ V, Max CL:
- 7.5ns @ 5V, 50pF
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
SN74AHC1G02DCKR FAQ
1.How can I place an order for SN74AHC1G02DCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AHC1G02DCKR 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 SN74AHC1G02DCKR reliable?
The price and inventory of SN74AHC1G02DCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AHC1G02DCKR is usually 5 days.
3.What payment methods are accepted for SN74AHC1G02DCKR?
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4.How is shipping managed for SN74AHC1G02DCKR?
SN74AHC1G02DCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AHC1G02DCKR 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 SN74AHC1G02DCKR?
For technical support, including SN74AHC1G02DCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AHC1G02DCKR requirements.
6.How does Aetrix verify that SN74AHC1G02DCKR is sourced from the original manufacturer or authorized distributors?
All SN74AHC1G02DCKR 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 SN74AHC1G02DCKR meets industry standards.
7.What is the process for return or replacement of SN74AHC1G02DCKR?
All SN74AHC1G02DCKR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AHC1G02DCKR, 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 SN74AHC1G02DCKR part is unused and in its original packaging.
Return procedure for SN74AHC1G02DCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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