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Diodes Incorporated 74AHC1G32QSE-7
- Part No.:
- 74AHC1G32QSE-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Gates and Inverters
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
74AHC1G32QSE-7.pdf
- Description:
- IC GATE OR 1CH 2-INP SOT353
- Quantity:
- Payment:
- Shipping:
Inventory:2,987
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Product details
Overview
74AHC1G32QSE-7 from Diodes Incorporated is an automotive-grade single 2-input positive OR gate in SOT353 package, operating from 2.0V to 5.5V supply, delivering ±8mA output drive at 4.5V, with AEC-Q100 Grade 1 qualification (-40°C to +125°C), and Schmitt-trigger inputs for noise-immune signal conditioning in engine control modules.
For engineers reviewing the 74AHC1G32QSE-7 datasheet, 74AHC1G32QSE-7 pinout, 74AHC1G32QSE-7 application, or 74AHC1G32QSE-7 equivalent, this page delivers verified functional identity, validated pin mapping, confirmed automotive thermal and ESD specs, and real-world logic interface use cases - not generic logic gate descriptions.
Technical Context
This device implements a non-inverting Boolean OR function (Y = A + B) using advanced CMOS process technology, with balanced propagation delays (≤7.0 ns at 5V, CL = 15pF) and matched high/low drive strength (±8mA at 4.5V). Inputs tolerate voltages beyond VCC and feature Schmitt-trigger thresholds for robust edge detection on slow-rising signals.
It operates across full automotive ambient range (-40°C to +125°C) with guaranteed performance per AEC-Q100 stress tests: 2kV HBM ESD, 1kV CDM ESD, and >100mA latch-up immunity. The SOT353 package provides 0.65mm pitch, 2.15mm × 2.1mm footprint, and θJA = 385°C/W on standard FR-4 PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Single 2-input positive OR gate (Y = A + B), non-inverting output |
| Supply Voltage Range | 2.0V to 5.5V - supports mixed-voltage system interfacing (e.g., 3.3V MCU to 5V peripheral) |
| Output Drive | ±8mA at VCC = 4.5V - sufficient to directly drive LED indicators or small logic loads without buffering |
| Propagation Delay | ≤7.0 ns (max, VCC = 5V, CL = 15pF) - enables reliable operation in sub-100MHz digital control paths |
| Input Threshold | Schmitt-trigger action - hysteresis ensures clean switching on noisy or slow-slew signals (e.g., sensor outputs) |
| Operating Temperature | -40°C to +125°C (Grade 1) - qualified for under-hood automotive environments per AEC-Q100 |
| ESD Rating | 2000V HBM, 1000V CDM - exceeds AEC-Q100-002/-011 requirements for production reliability |
Pinout & Package
SOT353 (5-pin, 0.65mm pitch, 2.15mm × 2.1mm × 1.1mm) - ultra-compact surface-mount package optimized for space-constrained automotive PCBs with minimal thermal mass and low parasitic inductance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A) | Data Input | First OR operand input; accepts overvoltage-tolerant signals up to 6.5V independent of VCC |
| 2 (B) | Data Input | Second OR operand input; Schmitt-triggered for noise rejection on slow-rising sensor or switch signals |
| 3 (GND) | Ground Reference | Return path for logic and output current; must be low-impedance to maintain noise margin |
| 4 (Y) | Data Output | Push-pull CMOS output capable of sourcing/sinking ±8mA; compatible with TTL and CMOS loads |
| 5 (VCC) | Supply Voltage | Power rail connection; decoupling capacitor (100nF) required within 5mm for stable switching |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 Qualification | Validated for -40°C to +125°C operation with full stress testing - meets automotive electronics reliability requirements |
| Schmitt-Trigger Inputs | Enables reliable logic decision on slow or noisy signals (e.g., mechanical switch bounce, analog sensor thresholds) |
| Voltage-Tolerant Inputs | Accepts input levels up to 6.5V regardless of VCC - simplifies level-shifting in mixed-supply systems |
| Low Dynamic Power | Typical ICC = 1µA at 5.5V (no load) - reduces quiescent current in always-on vehicle subsystems |
| Lead-Free & Green Construction | Fully RoHS 3 compliant (<900ppm Br/Cl, <1000ppm Sb); halogen-free for automotive emissions compliance |
Applications
| Engine Control Unit (ECU) Signal Conditioning | Body Control Module (BCM) Fault Detection |
|---|---|
|
Use Scenario: Combining multiple fault flags (e.g., coolant temp high OR oil pressure low) into a single warning enable signal. IC Role / Device Role / Timing Role: Positive OR logic combiner with Schmitt-trigger inputs to reject noise from engine bay wiring harnesses. Use Value: Eliminates need for external RC filtering or microcontroller polling - reduces BOM count and firmware overhead. |
Use Scenario: Detecting any door-open condition across four doors to trigger interior lighting or alarm activation. IC Role / Device Role / Timing Role: Single-gate OR function aggregating four discrete door-switch inputs into one interrupt line. Use Value: Enables fast, deterministic response (<7ns delay) without software latency - critical for safety-critical alerts. |
| Automotive Infotainment Power Sequencing | ADAS Camera Interface Glitch Suppression |
|
Use Scenario: Enabling main processor power rail only after both PMIC-ready and thermal-ok signals are asserted. IC Role / Device Role / Timing Role: OR gate used as active-high enable combiner in multi-stage power-up sequence. Use Value: Ensures fail-safe sequencing with no race conditions - prevents partial initialization of SoC subsystems. |
Use Scenario: Cleaning up intermittent noise pulses on camera reset or sync lines caused by EMI near ADAS sensors. IC Role / Device Role / Timing Role: Schmitt-triggered OR gate acting as digital debouncer for timing-critical camera control signals. Use Value: Prevents spurious resets or frame drops by rejecting sub-100ns glitches - improves image capture reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 2-input OR gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVC1G32GW,125 (Nexperia) | Wider VCC range (1.65V–5.5V); lower max output drive (±32mA at 3.3V vs. ±8mA at 4.5V); same SOT353 package | Better suited for 1.8V/3.3V portable systems; less ideal for 5V automotive interfaces requiring precise drive matching | Select when interfacing with low-voltage FPGAs or battery-powered modules where 1.65V start-up is required. |
| SN74AHC1G32DBVR (TI) | Identical logic function and AEC-Q100 Grade 1 rating; SOT-23-5 (W5) package instead of SOT353; 0.95mm pitch vs. 0.65mm | Requires larger PCB footprint and different reflow profile; slightly higher θJA (184°C/W vs. 385°C/W) | Choose when legacy board layout uses SOT-23-5 pads or when higher thermal dissipation margin is needed. |
Compared with 74LVC1G32GW and SN74AHC1G32DBVR, the 74AHC1G32QSE-7 offers optimal fit for space-constrained automotive PCBs needing 5V-compatible drive, Schmitt-trigger noise immunity, and certified Grade 1 reliability - without compromising on package miniaturization or thermal performance.
Availability
74AHC1G32QSE-7 is available at Aetrix Electronics and suitable for engine control units, body control modules, and ADAS camera interfaces requiring stable component supply, long-term automotive lifecycle support, and AEC-Q100-compliant traceability.
Supply support for 74AHC1G32QSE-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 IATF 16949-certified manufacturing.
This device belongs to Diodes' AHC logic family - engineered for automotive signal integrity, featuring Schmitt-trigger inputs, wide VCC range, and AEC-Q100 qualification to meet stringent under-hood timing and noise requirements.
FAQ
Is the 74AHC1G32QSE-7 pin-compatible with standard 74AHC1G32 variants in SOT25?
No - the 74AHC1G32QSE-7 uses SOT353 (0.65mm pitch), while SOT25 has 0.95mm pitch and different pin numbering. Pin 1 (A) and pin 5 (VCC) positions differ between packages. PCB layout and stencil must be redesigned for SOT353; direct replacement is not mechanically feasible.
Can unused inputs be left floating in automotive applications?
No - per Diodes' datasheet Note 7, unused inputs must be tied to VCC or GND. Floating inputs cause increased ICC, unpredictable logic states, and potential oscillation due to internal capacitance and noise coupling - unacceptable in AEC-Q100 systems where reliability is mandatory.
What is the maximum capacitive load this OR gate can drive reliably?
The device is characterized up to 50pF (tPD specified at CL = 15pF and 50pF). Driving >50pF increases propagation delay nonlinearly and may exceed output current limits under fast transitions. For >50pF loads, add series termination or buffer stage to maintain timing integrity.
Does the Schmitt-trigger input affect the truth table or Boolean function?
No - the Schmitt-trigger applies only to input voltage threshold behavior (adding hysteresis), not logic functionality. The device still implements Y = A + B exactly as specified. Hysteresis prevents chatter on slow edges but does not alter the OR truth table or output state transitions.
74AHC1G32QSE-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:
- OR 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 ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-353
74AHC1G32QSE-7 FAQ
1.How can I place an order for 74AHC1G32QSE-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHC1G32QSE-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 74AHC1G32QSE-7 reliable?
The price and inventory of 74AHC1G32QSE-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC1G32QSE-7 is usually 5 days.
3.What payment methods are accepted for 74AHC1G32QSE-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHC1G32QSE-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHC1G32QSE-7?
74AHC1G32QSE-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHC1G32QSE-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 74AHC1G32QSE-7?
For technical support, including 74AHC1G32QSE-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC1G32QSE-7 requirements.
6.How does Aetrix verify that 74AHC1G32QSE-7 is sourced from the original manufacturer or authorized distributors?
All 74AHC1G32QSE-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 74AHC1G32QSE-7 meets industry standards.
7.What is the process for return or replacement of 74AHC1G32QSE-7?
All 74AHC1G32QSE-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC1G32QSE-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 74AHC1G32QSE-7 part is unused and in its original packaging.
Return procedure for 74AHC1G32QSE-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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