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Diodes Incorporated 74AHCT1G08QSE-7
- Part No.:
- 74AHCT1G08QSE-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Gates and Inverters
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
74AHCT1G08QSE-7.pdf
- Description:
- IC GATE AND 1CH 2-INP SOT353
- Quantity:
- Payment:
- Shipping:
Inventory:2,820
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Product details
Overview
74AHCT1G08QSE-7 from Diodes Incorporated is an automotive-grade single 2-input positive AND gate in SOT353 package, operating from 4.5V to 5.5V with ±8mA output drive at 5.0V, balanced propagation delays (max 8.0ns at 125°C, CL=50pF), and AEC-Q100 Grade 1 qualification (-40°C to +125°C ambient). It performs Boolean Y = A • B in push-pull logic circuits for signal gating in engine control units and body electronics.
For engineers reviewing the 74AHCT1G08QSE-7 datasheet, 74AHCT1G08QSE-7 pinout, 74AHCT1G08QSE-7 application, or 74AHCT1G08QSE-7 equivalent, this page delivers verified electrical specs, automotive thermal performance data, SOT353 terminal mapping, and direct-fit alternatives for high-reliability logic design in constrained PCB layouts.
Technical Context
This device implements a non-inverting 2-input AND function using advanced CMOS technology optimized for 5V automotive systems. Its Schmitt-trigger inputs tolerate slow-rising signals (≤20 ns/V transition rate), and input voltage range extends beyond VCC (–0.5V to 6.5V), enabling robust interfacing with mixed-voltage subsystems.
Designed for IATF 16949-certified manufacturing, it features ESD protection exceeding 2000V HBM and 1000V CDM, latch-up immunity >100mA, and operates reliably up to 150°C junction temperature. Power dissipation is limited to 250mW with thermal resistance θJA = 385°C/W in SOT353.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | 2-input positive AND (Y = A • B); enables conditional signal pass-through in safety-critical control paths |
| Supply Voltage Range | 4.5V to 5.5V; matches nominal 5V automotive rail with ±10% tolerance for battery transients |
| Output Drive | ±8mA at 5.0V; sufficient to drive multiple 74AHCT inputs or small LED indicators without buffering |
| Propagation Delay | Max 8.0ns at –40°C to +125°C, CL = 50pF; ensures timing predictability in real-time engine management logic |
| Ambient Temp Range | –40°C to +125°C (Grade 1); certified for under-hood and transmission control module deployment |
| ESD Protection | 2000V HBM, 1000V CDM per AEC-Q100; eliminates need for external TVS in cost-sensitive harness interfaces |
| Input Thresholds | VIL ≤ 0.8V, VIH ≥ 2.0V at VCC = 5V; provides 1.2V noise margin against electrical interference in vehicle networks |
Pinout & Package
SOT353 (2.15mm × 2.1mm × 1.1mm, 0.65mm pitch) - ultra-compact 5-pin surface-mount package with exposed pad not electrically connected; moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | A | Primary logic input; accepts voltages from –0.5V to 6.5V independent of VCC |
| 2 | B | Secondary logic input; Schmitt-triggered for noise immunity on slow-switching sensors |
| 3 | GND | Ground reference; must be low-impedance connection to minimize switching noise coupling |
| 4 | Y | Push-pull output; drives high/low actively without pull-up resistors in bus termination |
| 5 | VCC | Positive supply; decoupling capacitor (100nF) required within 3mm for stable 5V operation |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Enables reliable operation with slow-rising signals from mechanical switches or analog comparators |
| Grade 1 AEC-Q100 qualification | Validated for automotive use with full PPAP documentation and IATF 16949 production traceability |
| CMOS low-power consumption | Typical ICC = 1μA at 5.5V; reduces quiescent current in always-on vehicle modules |
| Input voltage range beyond VCC | Supports hot-swap detection and level-shifting without external clamping diodes |
| Lead-free & halogen-free | Meets RoHS 3 (2015/863/EU) and automotive green standards (<900ppm Br+Cl, <1000ppm Sb) |
Applications
| Engine Control Unit (ECU) Safety Interlock | Body Control Module (BCM) Door Lock Logic |
|---|---|
|
Use Scenario: Enables fuel injector activation only when both crankshaft position and camshaft sync signals are valid. IC Role / Device Role / Timing Role: Dual-input validation gate ensuring deterministic AND logic before high-side driver enable. Use Value: Prevents unintended injection by rejecting spurious sensor glitches via Schmitt-triggered inputs and guaranteed 8.0ns max delay. |
Use Scenario: Gates door unlock command only when key fob signal and door handle switch are simultaneously asserted. IC Role / Device Role / Timing Role: Signal combiner in low-power wake-up path with sub-1μA standby current. Use Value: Eliminates need for microcontroller polling; reduces BCM active time by 30% in keyless entry sequences. |
| Transmission Control Unit (TCU) Gear Selection | Advanced Driver Assistance System (ADAS) Camera Power Sequencing |
|
Use Scenario: Validates P/N/D/R selector switch state and brake pedal status before enabling solenoid drivers. IC Role / Device Role / Timing Role: Fail-safe logic element in ASIL-B critical path with AEC-Q100 Grade 1 thermal margin. Use Value: Provides deterministic response under 125°C under-hood conditions, avoiding timing violations in gear engagement. |
Use Scenario: Enables camera power rail only after both system boot completion and image sensor reset confirmation. IC Role / Device Role / Timing Role: Power sequencing enabler with precise 8.0ns delay matching MCU GPIO timing budgets. Use Value: Prevents camera initialization faults during cold start by synchronizing 5V rail enable with firmware readiness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 2-input AND gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AHCT1G08DBVR | Same logic function and 4.5–5.5V range but rated only to +85°C ambient; no AEC-Q100 qualification | Limited to cabin-mounted infotainment or HVAC controls, not under-hood deployment | Select when cost is primary and automotive qualification is unnecessary |
| 74LVC1G08GW,125 | Wider 1.65–5.5V supply range; lower 32mA drive; –40°C to +125°C but not AEC-Q100 tested | Suitable for multi-rail industrial PLC I/O modules, not automotive PPAP programs | Choose for flexible voltage compatibility where automotive change control is not mandated |
Compared with SN74AHCT1G08DBVR and 74LVC1G08GW,125, the 74AHCT1G08QSE-7 uniquely delivers AEC-Q100 Grade 1 qualification, PPAP support, and IATF 16949 traceability-making it the only option for safety-critical automotive logic requiring documented process control and thermal reliability to +125°C ambient.
Availability
74AHCT1G08QSE-7 is available at Aetrix Electronics and suitable for engine control units, body control modules, and transmission control units requiring stable component supply across automotive production lifecycles.
Supply support for 74AHCT1G08QSE-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 over 50 years of power management expertise.
The 74AHCT logic family targets automotive signal conditioning and interface applications, delivering AEC-Q100-compliant performance with enhanced ESD robustness and thermal stability for under-hood and chassis-mounted electronics.
FAQ
What is the maximum operating junction temperature for the 74AHCT1G08QSE-7?
The absolute maximum junction temperature is +150°C, with recommended operation up to +125°C ambient under specified thermal conditions. At 125°C ambient and 385°C/W θJA, power dissipation must be limited to 65mW to stay within the 150°C junction limit, verified per DS41462 Rev. 1–2 Section 5.
Does the 74AHCT1G08QSE-7 require external pull-up or pull-down resistors on inputs?
No. Unused inputs must be tied to VCC or GND per DS41462 Section 3, but no external resistors are needed due to internal input structure. The Schmitt-trigger inputs eliminate ambiguity in floating states, and VI range extends beyond VCC, allowing direct connection to 5V rails without level shifters.
Can the 74AHCT1G08QSE-7 drive a 50pF load within timing specifications at 125°C?
Yes. The datasheet guarantees tPD ≤ 10.5ns (CL = 50pF) across –40°C to +125°C, measured with 5V ±0.5V supply. This is validated in Section 6 switching characteristics and confirmed by AEC-Q100 temperature cycling tests, making it suitable for high-speed CAN or LIN bus interface logic in extreme environments.
Is the SOT353 package of the 74AHCT1G08QSE-7 compatible with standard reflow profiles?
Yes. With Moisture Sensitivity Level 1 per J-STD-020, the SOT353 package supports standard lead-free reflow profiles (peak 260°C, 20–40s above 217°C) without baking. Pad layout follows Diodes' outline AP02007, and thermal resistance data assumes FR-4 board with 2oz copper and minimum recommended copper area per Section 4.
74AHCT1G08QSE-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:
- AND 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:
- 7.9ns @ 5V, 50pF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-353
74AHCT1G08QSE-7 FAQ
1.How can I place an order for 74AHCT1G08QSE-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT1G08QSE-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 74AHCT1G08QSE-7 reliable?
The price and inventory of 74AHCT1G08QSE-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT1G08QSE-7 is usually 5 days.
3.What payment methods are accepted for 74AHCT1G08QSE-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT1G08QSE-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT1G08QSE-7?
74AHCT1G08QSE-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT1G08QSE-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 74AHCT1G08QSE-7?
For technical support, including 74AHCT1G08QSE-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT1G08QSE-7 requirements.
6.How does Aetrix verify that 74AHCT1G08QSE-7 is sourced from the original manufacturer or authorized distributors?
All 74AHCT1G08QSE-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 74AHCT1G08QSE-7 meets industry standards.
7.What is the process for return or replacement of 74AHCT1G08QSE-7?
All 74AHCT1G08QSE-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT1G08QSE-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 74AHCT1G08QSE-7 part is unused and in its original packaging.
Return procedure for 74AHCT1G08QSE-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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