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Diodes Incorporated 74AHCT1G32QSE-7
- Part No.:
- 74AHCT1G32QSE-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Gates and Inverters
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
74AHCT1G32QSE-7.pdf
- Description:
- IC GATE OR 1CH 2-INP SOT353
- Quantity:
- Payment:
- Shipping:
Inventory:1,591
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Product details
Overview
74AHCT1G32QSE-7 from Diodes Incorporated is an automotive-grade single 2-input positive OR gate in SOT353 package, operating from 4.5V to 5.5V supply, delivering ±8mA output drive at 5.0V, with propagation delay as low as 3.3ns (typ) at CL=15pF, and qualified per AEC-Q100 Grade 1 (−40°C to +125°C) for under-hood automotive logic applications.
For engineers reviewing the 74AHCT1G32QSE-7 datasheet, 74AHCT1G32QSE-7 pinout, 74AHCT1G32QSE-7 application, or 74AHCT1G32QSE-7 equivalent, this part supports high-reliability logic interfacing where rail-to-rail CMOS-compatible inputs, Schmitt-trigger noise immunity, balanced drive capability, and IATF 16949-manufactured traceability are required.
Technical Context
The 74AHCT1G32QSE-7 implements a non-inverting Boolean OR function (Y = A + B) using advanced CMOS technology, with all inputs featuring Schmitt-trigger action to tolerate slow input edges up to 20 ns/V transition rate. It operates exclusively within 4.5V–5.5V VCC, ensuring compatibility with 5V automotive microcontroller I/O rails.
Its design includes input voltage tolerance beyond VCC (−0.5V to 6.5V), ±20mA clamp current protection, and ESD robustness exceeding 2kV HBM and 1kV CDM per AEC-Q100, enabling direct interface with noisy sensor signals or long-trace wiring without external conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 4.5V to 5.5V - Ensures stable operation across automotive battery transients (cold crank, load dump). |
| Propagation Delay | 3.3ns (typ) at CL=15pF - Enables timing-critical logic decisions in real-time control loops. |
| Output Drive | ±8mA at 5.0V - Directly drives multiple 74AHCT inputs or small LED indicators without buffering. |
| Input Thresholds | VIL ≤ 0.8V, VIH ≥ 2.0V at VCC=5V - Guarantees noise margin >1.2V for reliable TTL/CMOS-level signal detection. |
| Operating Temp | −40°C to +125°C (Grade 1) - Validated for engine control units, transmission modules, and ADAS sensor hubs. |
| ESD Protection | 2000V HBM, 1000V CDM - Meets AEC-Q100-002/-011 for assembly-line handling and field reliability. |
| Power Dissipation | 10μA ICC (typ) at 5.5V - Supports always-on low-power subsystems without thermal derating concerns. |
Pinout & Package
SOT353 (2.15mm × 2.1mm × 1.1mm, 0.65mm pitch) - ultra-compact 5-pin surface-mount package optimized for space-constrained automotive PCBs with JEDEC-standard footprint and lead-free matte tin terminations.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A) | Data Input | Non-inverting logic input with Schmitt-trigger hysteresis; accepts −0.5V to 6.5V, tolerant of slow edges. |
| 2 (B) | Data Input | Second non-inverting logic input; electrically identical to Pin 1; both inputs fully interchangeable. |
| 3 (GND) | Ground Reference | Primary return path for output current and internal bias; must be low-impedance for noise immunity. |
| 4 (Y) | Data Output | Push-pull CMOS output capable of sourcing/sinking ±8mA; rail-to-rail swing with <0.55V VOL at full load. |
| 5 (VCC) | Supply Voltage | Positive power rail connection; decoupling capacitor (0.1μF) required within 5mm for stable switching. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Enables reliable detection of slow-rising sensor signals (e.g., throttle position, coolant temp) without external hysteresis circuitry. |
| Grade 1 AEC-Q100 qualification | Validated for continuous operation at +125°C ambient, including thermal cycling and humidity exposure per automotive standards. |
| Input voltage range beyond VCC | Supports direct interface with 3.3V or 12V auxiliary signals without level-shifting components. |
| Balanced propagation delays | Ensures symmetrical timing between A→Y and B→Y paths, critical for deterministic logic arbitration in safety-critical systems. |
| Lead-free & halogen-free | Complies with RoHS 3 (2015/863/EU) and Diodes' "Green" definition (<900ppm Br/Cl, <1000ppm Sb), meeting Tier-1 automotive material declarations. |
Applications
| Engine Control Unit (ECU) Signal Conditioning | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Combining two independent fault flags (e.g., overtemperature and overcurrent) into a single OR'd warning signal for dashboard illumination. IC Role / Device Role / Timing Role: Single-gate logic combiner performing real-time Boolean OR with sub-10ns latency and no added jitter. Use Value: Eliminates need for larger multi-gate packages or microcontroller GPIO polling, reducing BOM count and firmware overhead. |
Use Scenario: Enabling door lock actuation only when both key fob authentication AND door handle proximity are asserted. IC Role / Device Role / Timing Role: Fast-response logic gate synchronizing dual-sensor inputs before driving a MOSFET-based lock solenoid driver. Use Value: Provides hardware-level security gating with guaranteed response time <9ns, independent of MCU interrupt latency. |
| ADAS Camera Power Sequencing | Automotive Infotainment System Reset Logic |
|
Use Scenario: Generating a master enable signal when either image sensor or ISP core voltage rails are stable. IC Role / Device Role / Timing Role: OR gate acting as rail-status combiner feeding reset controller input with precise 3.3ns typical propagation delay. Use Value: Ensures camera subsystem powers up only after all required supplies meet regulation, preventing initialization faults. |
Use Scenario: Merging watchdog timeout and manual reset button signals to trigger system-wide cold reset in head unit. IC Role / Device Role / Timing Role: Fault-tolerant reset combiner with Schmitt-trigger inputs rejecting EMI-induced glitches on long button traces. Use Value: Prevents spurious resets from noisy cabin environments while maintaining deterministic reset assertion timing. |
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 |
|---|---|---|---|
| SN74LVC1G32DBVR | Wider VCC range (1.65V–5.5V); lower drive (±24mA at 3.3V); not AEC-Q100 qualified. | Targeted at consumer/portable electronics; lacks automotive temperature validation and PPAP documentation. | Select when cost-sensitive industrial designs require 3.3V compatibility but do not demand automotive qualification. |
| 74AHC1G32SE-7 | Same SOT353 package and pinout; wider VCC (2V–5.5V); higher max propagation delay (7.5ns typ); no Schmitt inputs. | Acceptable for benign-temperature environments (−40°C to +85°C); unsuitable for noisy under-hood locations. | Choose for legacy 5V systems needing broader supply flexibility but without Grade 1 thermal or ESD requirements. |
Compared with SN74LVC1G32DBVR and 74AHC1G32SE-7, the 74AHCT1G32QSE-7 uniquely delivers AEC-Q100 Grade 1 operation, Schmitt-trigger noise immunity, and guaranteed 5V performance-making it the only choice for safety-critical automotive logic where input edge integrity and thermal reliability are non-negotiable.
Availability
74AHCT1G32QSE-7 is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, and ADAS camera subsystems requiring stable component supply with full AEC-Q100 traceability and IATF 16949 manufacturing assurance.
Supply support for 74AHCT1G32QSE-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 solutions for automotive, industrial, and computing markets with ISO/TS 16949 and IATF 16949 certified facilities.
The 74AHCT logic family targets automotive and industrial applications demanding 5V-compatible, AEC-Q100-qualified logic gates with robust ESD protection, wide temperature operation, and minimal power consumption.
FAQ
Is the 74AHCT1G32QSE-7 compatible with 3.3V logic inputs?
Yes-the device accepts input voltages from −0.5V to 6.5V, independent of VCC. A 3.3V logic high (≥2.0V) meets the VIH specification at 5.0V supply, and Schmitt-trigger inputs ensure clean switching even with marginal 3.3V signals. No level shifter is needed for interfacing with 3.3V microcontrollers.
What is the maximum capacitive load the output can drive reliably?
The output is characterized up to 50pF load capacitance, with tPD increasing from 3.3ns (15pF) to 4.8ns (50pF) at +25°C. For loads >50pF, propagation delay increases linearly and output rise/fall times degrade; use a buffer stage if driving >100pF or long PCB traces (>5cm) to maintain signal integrity.
Can unused inputs be left floating?
No-unused inputs must be tied to VCC or GND per the datasheet's recommended operating conditions. Floating inputs cause increased ICC, unpredictable logic states, and potential oscillation due to CMOS input structure; this violates AEC-Q100 reliability requirements and may induce latch-up in worst-case scenarios.
Does the SOT353 package support automated optical inspection (AOI)?
Yes-the SOT353 package has coplanar leads, defined solder pad geometry (0.65mm pitch, 0.25–0.40mm lead length), and matte tin plating compatible with standard AOI algorithms. Diodes' package outline document AP02007 confirms alignment with IPC-7351B Class B density guidelines for reliable solder-joint defect detection.
74AHCT1G32QSE-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:
- OR 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
74AHCT1G32QSE-7 FAQ
1.How can I place an order for 74AHCT1G32QSE-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT1G32QSE-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 74AHCT1G32QSE-7 reliable?
The price and inventory of 74AHCT1G32QSE-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT1G32QSE-7 is usually 5 days.
3.What payment methods are accepted for 74AHCT1G32QSE-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT1G32QSE-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT1G32QSE-7?
74AHCT1G32QSE-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT1G32QSE-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 74AHCT1G32QSE-7?
For technical support, including 74AHCT1G32QSE-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT1G32QSE-7 requirements.
6.How does Aetrix verify that 74AHCT1G32QSE-7 is sourced from the original manufacturer or authorized distributors?
All 74AHCT1G32QSE-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 74AHCT1G32QSE-7 meets industry standards.
7.What is the process for return or replacement of 74AHCT1G32QSE-7?
All 74AHCT1G32QSE-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT1G32QSE-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 74AHCT1G32QSE-7 part is unused and in its original packaging.
Return procedure for 74AHCT1G32QSE-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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