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Diodes Incorporated 74AHCT1G02QSE-7
- Part No.:
- 74AHCT1G02QSE-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Gates and Inverters
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
74AHCT1G02QSE-7.pdf
- Description:
- IC GATE NOR 1CH 2-INP SOT353
- Quantity:
- Payment:
- Shipping:
Inventory:1,950
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Product details
Overview
74AHCT1G02QSE-7 from Diodes Incorporated is an automotive-grade single 2-input positive NOR gate in SOT353 package, operating from 4.5V to 5.5V with ±8mA output drive at 5.0V, Schmitt-trigger inputs for noise immunity, and AEC-Q100 Grade 1 qualification (–40°C to +125°C). It implements Boolean function Y = A + B and is used in engine control units, body electronics, and industrial logic interfaces requiring robust timing and latch-up immunity.
For engineers reviewing the 74AHCT1G02QSE-7 datasheet, 74AHCT1G02QSE-7 pinout, 74AHCT1G02QSE-7 application, or 74AHCT1G02QSE-7 equivalent, this page delivers verified electrical specs, automotive thermal performance data, SOT353 terminal mapping, and direct substitution guidance for logic-level translation and noise-tolerant gate design.
Technical Context
This device belongs to the AHCT logic family, delivering TTL-compatible input thresholds while maintaining CMOS low-power operation. Its Schmitt-trigger inputs provide hysteresis (typ. 0.5V) to tolerate slow-rising signals common in automotive sensor interfaces and industrial I/O lines.
The NOR gate exhibits balanced propagation delays (tPD = 3.5 ns typ. @ CL = 15 pF, VCC = 5V), matched high/low drive strength (±8 mA), and operates reliably across full Grade 1 temperature range without derating up to +125°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Positive NOR: Y = A + B - enables active-low enable/disable control in power sequencing and reset circuits. |
| Supply Voltage Range | 4.5V to 5.5V - compatible with standard 5V automotive and industrial rails, no external regulation required. |
| Output Drive | ±8 mA @ 5.0V - sufficient to directly drive multiple 74-series inputs or small LEDs without buffering. |
| Propagation Delay | 3.5 ns typical @ CL = 15 pF - supports >100 MHz toggle rates in combinatorial logic paths. |
| Input Hysteresis | ~0.5V (Schmitt-trigger) - rejects noise on slow-switching signals from switches, sensors, or long PCB traces. |
| Operating Temperature | –40°C to +125°C (Grade 1) - qualified for under-hood and transmission-control module environments. |
| ESD Protection | 2 kV HBM, 1 kV CDM - exceeds AEC-Q100-002/-011, enabling robust handling in automated assembly. |
Pinout & Package
SOT353 (2.15 mm × 2.10 mm × 1.10 mm, 0.65 mm pitch) - ultra-compact 5-pin surface-mount package optimized for space-constrained automotive modules and portable industrial controllers.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GND | Ground reference | Return path for all internal logic and output current; must be low-impedance to minimize ground bounce. |
| 2 - A | Input A | Active-high Schmitt-trigger input; accepts 0–5.5V swing independent of VCC. |
| 3 - B | Input B | Active-high Schmitt-trigger input; electrically identical to Pin 2, enabling dual-signal arbitration. |
| 4 - Y | Output Y | Push-pull CMOS output; drives high/low actively with matched rise/fall times and rail-to-rail swing. |
| 5 - VCC | Power supply | 4.5–5.5V nominal supply; decoupling capacitor (100 nF) required within 3 mm for stable switching. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C operation with PPAP documentation support and IATF 16949 manufacturing traceability. |
| Schmitt-trigger inputs | Input hysteresis ensures reliable logic transitions even with noisy or slow-rising signals from mechanical switches or analog sensors. |
| ±8 mA output drive | Eliminates need for external buffer stages when interfacing with legacy TTL loads or driving indicator LEDs directly. |
| CMOS low-power consumption | ICC ≤ 40 μA max over full temperature range - reduces system standby current in always-on automotive modules. |
| Input voltage tolerance beyond VCC | VI rated to 6.5V absolute max - allows safe interfacing with 5V logic driving into 3.3V domains via level-shifting resistors. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Combining crankshaft and camshaft position fault flags into a single diagnostic alert signal. IC Role / Device Role / Timing Role: NOR gate performing active-low OR logic to assert "engine fault" if either sensor fails. Use Value: Eliminates microcontroller GPIO overhead and provides deterministic, zero-latency fault aggregation before MCU wake-up. |
Use Scenario: Enabling door lock actuator drivers only when ignition is OFF and door switch is closed. IC Role / Device Role / Timing Role: Safety interlock gate ensuring power path activation requires two independent conditions. Use Value: Hardware-enforced fail-safe behavior independent of firmware state or watchdog resets. |
| Industrial PLC Input Conditioning | Automotive Infotainment Power Sequencing |
Use Scenario: Debouncing and noise filtering of 24V dry-contact inputs from limit switches or emergency stops. IC Role / Device Role / Timing Role: Input signal conditioner using Schmitt-trigger inputs to reject EMI and contact bounce. Use Value: Reduces false triggers in harsh factory environments without software debouncing latency. |
Use Scenario: Generating delayed enable signals for display backlight and audio amplifier ICs after main SoC power-up. IC Role / Device Role / Timing Role: Combinatorial logic element in discrete power sequencing tree with RC-controlled inputs. Use Value: Enables precise, component-level timing control without adding FPGA or dedicated PMIC complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NOR gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AHCT1G02DBVR | Same AHCT logic family, SOT-23-5 package (3.0 × 2.8 mm), higher θJA (184°C/W vs. 385°C/W), lower thermal mass. | Better suited for board-level thermal management with larger copper pour; less compact than SOT353. | Select when PCB layout allows larger footprint and thermal relief is prioritized over miniaturization. |
| 74LVC1G02GW,125 | Lower VCC range (1.65–5.5V), ±32 mA drive, but not AEC-Q100 qualified; LVC family, not AHCT. | Acceptable for non-automotive industrial use; lacks Grade 1 temp rating and automotive qualification documentation. | Select only for cost-sensitive consumer or commercial designs where automotive compliance is unnecessary. |
Compared with SN74AHCT1G02DBVR and 74LVC1G02GW,125, the 74AHCT1G02QSE-7 uniquely combines AEC-Q100 Grade 1 qualification, SOT353 miniaturization, and Schmitt-trigger inputs - making it the only choice for space-constrained, high-reliability automotive logic nodes requiring noise immunity and full-temperature validation.
Availability
74AHCT1G02QSE-7 is available at Aetrix Electronics and suitable for engine control units, body electronics modules, and industrial programmable logic controllers requiring stable component supply with guaranteed automotive-grade traceability and lifecycle continuity.
Supply support for 74AHCT1G02QSE-7 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and computing markets with ISO/TS 16949 and IATF 16949 certified facilities.
The 74AHCT1G02QSE-7 belongs to Diodes' automotive-qualified AHCT logic family, designed specifically for noise-immune, rail-to-rail 5V logic interfacing in under-hood and chassis-mounted electronic control units.
FAQ
Is the 74AHCT1G02QSE-7 pin-compatible with other SOT353 logic gates?
Yes - it uses standard SOT353 pinout (GND-A-B-Y-VCC) consistent with Diodes' 74AHCT1Gxx series and compatible with industry-standard 5-pin logic footprints. No adapter or redesign is needed when substituting within the same function group, provided voltage and drive requirements match.
Can unused inputs be left floating?
No - per datasheet Note 7, unused inputs must be tied to VCC or GND to prevent undefined logic states, increased ICC, and potential oscillation. Floating inputs may cause excessive current draw or erratic output behavior due to internal node instability.
What is the maximum capacitive load this gate can drive reliably?
The device is characterized up to 50 pF (tPD = 4.9 ns typ.), and maintains stable operation with loads ≤ 50 pF. Driving >50 pF increases propagation delay nonlinearly and may exceed recommended output current limits; external buffering is advised for heavier loads.
Does this part support mixed-voltage interfacing (e.g., 3.3V inputs)?
Yes - inputs tolerate VI up to 6.5V regardless of VCC, allowing safe connection to 3.3V or 2.5V logic outputs. However, output swing remains rail-to-rail (0–5V), so level-shifting is required for bidirectional communication with lower-voltage systems.
74AHCT1G02QSE-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74AHCT
- 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:
- 4.5V ~ 5.5V
- Current - Quiescent (Max):
- 1 µA
- Current - Output High, Low:
- 8mA, 8mA
- Input Logic Level - Low:
- 0.8V
- Input Logic Level - High:
- 2V
- Max Propagation Delay @ V, Max CL:
- 7.5ns @ 5V, 50pF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-353
74AHCT1G02QSE-7 FAQ
1.How can I place an order for 74AHCT1G02QSE-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT1G02QSE-7 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 74AHCT1G02QSE-7 reliable?
The price and inventory of 74AHCT1G02QSE-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT1G02QSE-7 is usually 5 days.
3.What payment methods are accepted for 74AHCT1G02QSE-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT1G02QSE-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT1G02QSE-7?
74AHCT1G02QSE-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT1G02QSE-7 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 74AHCT1G02QSE-7?
For technical support, including 74AHCT1G02QSE-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT1G02QSE-7 requirements.
6.How does Aetrix verify that 74AHCT1G02QSE-7 is sourced from the original manufacturer or authorized distributors?
All 74AHCT1G02QSE-7 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 74AHCT1G02QSE-7 meets industry standards.
7.What is the process for return or replacement of 74AHCT1G02QSE-7?
All 74AHCT1G02QSE-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT1G02QSE-7, 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 74AHCT1G02QSE-7 part is unused and in its original packaging.
Return procedure for 74AHCT1G02QSE-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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