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Diodes Incorporated 74AHC1G08QSE-7
- Part No.:
- 74AHC1G08QSE-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Gates and Inverters
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
74AHC1G08QSE-7.pdf
- Description:
- IC GATE AND 1CH 2-INP SOT353
- Quantity:
- Payment:
- Shipping:
Inventory:42,085
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Product details
Overview
74AHC1G08QSE-7 from Diodes Incorporated is an automotive-grade single 2-input positive AND gate in SOT353 package, operating from 2.0V to 5.5V supply, delivering ±8mA output drive at 4.5V, with propagation delay as low as 3.2ns (typ) at 5V and CL=15pF, used for level-sensitive logic gating in engine control units and body electronics.
For engineers reviewing the 74AHC1G08QSE-7 datasheet, 74AHC1G08QSE-7 pinout, 74AHC1G08QSE-7 application, or 74AHC1G08QSE-7 equivalent, this page delivers verified AEC-Q100 Grade 1 specifications, validated SOT353 pin mapping, automotive-qualified timing behavior, and direct functional alternatives with documented electrical and thermal differences.
Technical Context
The 74AHC1G08QSE-7 implements a non-inverting Boolean AND function (Y = A · B) using advanced CMOS process technology, with Schmitt-trigger inputs enabling robust operation under slow-rising/falling signals. Its push-pull output stage supports rail-to-rail switching across the full 2.0–5.5V VCC range.
Designed for automotive Grade 1 (-40°C to +125°C), it meets AEC-Q100 stress test requirements including >2000V HBM ESD, >1000V CDM, and >100mA latch-up immunity. Propagation delays are balanced between rising and falling edges (tPLH ≈ tPHL), and input voltage tolerance extends beyond VCC (VI = -0.5V to 6.5V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Single 2-input positive AND gate (Y = A · B); enables conditional signal enablement in safety-critical control paths. |
| Supply Voltage Range | 2.0V to 5.5V; supports dual-rail systems and legacy 5V microcontrollers alongside modern 3.3V/2.5V domains. |
| Output Drive | ±8mA at VCC = 4.5V; sufficient to directly drive multiple 74AHC inputs or small LED indicators without buffering. |
| Propagation Delay | 3.2ns (typ) at VCC = 5V, CL = 15pF; ensures sub-10ns timing margin in 50MHz+ combinatorial logic chains. |
| Operating Temperature | -40°C to +125°C ambient (Grade 1); qualified for under-hood automotive ECUs and industrial motor drives. |
| ESD Protection | 2000V HBM, 1000V CDM per AEC-Q100; eliminates need for external TVS in most board-level ESD environments. |
| Input Thresholds | VIL ≤ 0.9V / VIH ≥ 2.1V at VCC = 3V; provides >1.2V noise margin for noisy automotive harness interfaces. |
Pinout & Package
SOT353 (5-pin, 2.15mm × 2.1mm × 1.1mm, 0.65mm pitch) surface-mount package with moisture sensitivity level 1 per J-STD-020 and matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A) | Data Input | Primary logic input; accepts voltages from -0.5V to 6.5V independent of VCC, enabling mixed-voltage interfacing. |
| 2 (B) | Data Input | Secondary logic input; Schmitt-triggered to tolerate slow edges (Δt/Δv ≤ 100 ns/V at 3.3V). |
| 3 (GND) | Ground Reference | Return path for all internal logic and output current; must be low-impedance to maintain noise immunity. |
| 4 (Y) | Data Output | Push-pull CMOS output; sinks or sources up to ±8mA while maintaining VOH ≥ 3.94V and VOL ≤ 0.36V at 4.5V. |
| 5 (VCC) | Power Supply | Core supply rail; decoupling capacitor (≥100nF) required within 5mm to suppress switching noise and ensure stable timing. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Enables reliable operation with slow-rising signals (e.g., from mechanical switches or long PCB traces) without external hysteresis circuitry. |
| AEC-Q100 Grade 1 qualification | Validated for continuous operation at -40°C to +125°C ambient, meeting automotive ECU thermal and reliability requirements. |
| Wide VCC range (2.0–5.5V) | Eliminates level-shifters when interfacing between 2.5V sensors, 3.3V MCUs, and 5V legacy peripherals in same subsystem. |
| Balanced propagation delays | tPLH and tPHL match within 0.3ns (typ), preventing duty-cycle distortion in clock-gating or pulse-width modulation circuits. |
| CMOS low-power consumption | ICC ≤ 40μA max over full temperature range; reduces quiescent current in always-on vehicle modules like door controllers. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
|
Use Scenario: Enabling fuel injector driver only when both crankshaft position and camshaft sync signals are valid. IC Role / Device Role / Timing Role: Combinatorial logic gate performing real-time validation of dual sensor inputs before actuator activation. Use Value: Prevents unintended injection by requiring simultaneous high logic on two independent timing channels, improving functional safety integrity. |
Use Scenario: Gating window lift motor power based on door lock status AND key fob proximity detection. IC Role / Device Role / Timing Role: Safety interlock gate ensuring motor activation only when both conditions are met simultaneously. Use Value: Eliminates risk of pinch injury by enforcing hardware-level AND condition before motor enable, independent of firmware state. |
| Industrial Motor Drive | Automotive Infotainment Power Sequencing |
|
Use Scenario: Enabling gate driver IC only when both overtemperature flag and fault latch are cleared. IC Role / Device Role / Timing Role: Fault-clearing logic gate that resets power stage enable after safe thermal recovery. Use Value: Provides deterministic hardware reset path for IGBT/MOSFET drivers, avoiding software lockup-induced thermal runaway. |
Use Scenario: Activating display backlight only when main SoC power rail is stable AND touch controller initialization completes. IC Role / Device Role / Timing Role: Power sequencing coordinator ensuring backlight enable occurs only after full system readiness. Use Value: Prevents visual artifacts and EEPROM corruption by enforcing strict hardware dependency between subsystems. |
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 |
|---|---|---|---|
| 74LVC1G08GW,125 (Nexperia) | Wider VCC range (1.65–5.5V); lower ICC (max 10μA); no AEC-Q100 qualification; SOT353 package. | Not suitable for automotive Grade 1 environments; acceptable for industrial controls with tighter supply constraints. | Select when ultra-low static power (<10μA) is critical and AEC-Q100 is not required. |
| SN74AHC1G08DBVR (TI) | Identical logic function and AEC-Q100 Grade 1 rating; SOT-23-5 package (larger footprint, 0.95mm pitch); higher thermal resistance (θJA = 216°C/W). | Compatible in non-space-constrained automotive designs; requires larger PCB area and has higher junction temperature rise at same power. | Select when existing layout uses SOT-23-5 footprints or when higher thermal mass is preferred for transient thermal stability. |
Compared with 74LVC1G08GW and SN74AHC1G08DBVR, the 74AHC1G08QSE-7 uniquely combines AEC-Q100 Grade 1 compliance, minimal SOT353 footprint (2.15×2.1mm), and optimized thermal performance (θJA = 385°C/W) - making it the only choice for space-limited, thermally demanding automotive modules requiring certified reliability.
Availability
74AHC1G08QSE-7 is available at Aetrix Electronics and suitable for engine control units, body control modules, and industrial motor drives requiring stable component supply across extended temperature ranges and automotive lifecycle commitments.
Supply support for 74AHC1G08QSE-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 certification.
The 74AHC logic family targets automotive and industrial applications requiring wide supply voltage operation, robust ESD immunity, and AEC-Q100 qualification - specifically engineered for signal integrity in electrically noisy, thermally aggressive environments.
FAQ
Is the 74AHC1G08QSE-7 pin-compatible with standard 74AHC1G08 variants in SOT25 or SC-70 packages?
Yes - the 74AHC1G08QSE-7 uses the SOT353 package with identical pinout (A-B-GND-Y-VCC) to industry-standard SC-70-5 and SOT353 logic gates. Pin 1 is A, Pin 2 is B, Pin 3 is GND, Pin 4 is Y, and Pin 5 is VCC, matching JEDEC MO-203AB and Diodes' own SOT353 outline.
What is the maximum capacitive load the 74AHC1G08QSE-7 can drive while maintaining specified propagation delay?
The device is characterized up to 50pF load capacitance, with tPD = 7.9ns (max) at VCC = 5V and CL = 50pF over -40°C to +125°C. Driving >50pF increases delay nonlinearly and may exceed 10ns - use series termination or buffer stages for loads exceeding this limit.
Does the 74AHC1G08QSE-7 require external pull-up or pull-down resistors on unused inputs?
No - unused inputs must be tied to either VCC or GND per datasheet Note 7, but external resistors are unnecessary. The inputs have no internal weak pull-ups; floating inputs cause undefined logic states and increased ICC, so direct connection is mandatory.
How does the Schmitt-trigger input affect timing analysis in synchronous designs?
Schmitt-trigger inputs add hysteresis (typically 0.3–0.5V) to input thresholds, eliminating chatter on slow edges but introducing minor delay variation (≤0.5ns) depending on slew rate. For synchronous timing closure, use worst-case tPD values from the datasheet's -40°C to +125°C column, not typical values.
74AHC1G08QSE-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74AHC
- 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:
- 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:
- 7.9ns @ 5V, 50pF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-353
74AHC1G08QSE-7 FAQ
1.How can I place an order for 74AHC1G08QSE-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHC1G08QSE-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 74AHC1G08QSE-7 reliable?
The price and inventory of 74AHC1G08QSE-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC1G08QSE-7 is usually 5 days.
3.What payment methods are accepted for 74AHC1G08QSE-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHC1G08QSE-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHC1G08QSE-7?
74AHC1G08QSE-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHC1G08QSE-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 74AHC1G08QSE-7?
For technical support, including 74AHC1G08QSE-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC1G08QSE-7 requirements.
6.How does Aetrix verify that 74AHC1G08QSE-7 is sourced from the original manufacturer or authorized distributors?
All 74AHC1G08QSE-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 74AHC1G08QSE-7 meets industry standards.
7.What is the process for return or replacement of 74AHC1G08QSE-7?
All 74AHC1G08QSE-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC1G08QSE-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 74AHC1G08QSE-7 part is unused and in its original packaging.
Return procedure for 74AHC1G08QSE-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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