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Diodes Incorporated 74AHCT1G125QW5-7
- Part No.:
- 74AHCT1G125QW5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
74AHCT1G125QW5-7.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,454
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Product details
Overview
74AHCT1G125QW5-7 from Diodes Incorporated is an automotive-grade single non-inverting buffer with 3-state output, designed for bus driving and signal isolation in 5V logic systems. It operates from 4.5V to 5.5V, delivers ±8mA drive strength at 4.5V, features Schmitt-trigger inputs for noise immunity, and supports Grade 1 temperature range (–40°C to +125°C) for under-hood automotive control modules.
For engineers reviewing the 74AHCT1G125QW5-7 datasheet, 74AHCT1G125QW5-7 pinout, 74AHCT1G125QW5-7 application, or 74AHCT1G125QW5-7 equivalent, key selection criteria include 3-state enable timing (tEN ≤ 6.5ns), high-impedance leakage (<10μA), AEC-Q100 qualification, SOT25 package thermal resistance (θJA = 184°C/W), and input voltage tolerance beyond VCC.
Technical Context
This device implements a single-channel CMOS buffer with active-low output enable (OE), where OE = LOW enables the non-inverting path (A → Y) and OE = HIGH forces Y into high-impedance. Its Schmitt-trigger inputs accept slow-rising signals (Δt/Δv ≤ 20 ns/V) without oscillation, making it suitable for noisy industrial sensor interfaces.
The logic is built on AHCT technology-ensuring TTL-compatible input thresholds (VIH ≥ 2.0V, VIL ≤ 0.8V at VCC = 5V) while maintaining CMOS power efficiency (ICC ≤ 40μA max). Propagation delay (tPD ≤ 7.0ns at CL = 50pF, –40°C to +125°C) and balanced rise/fall times support reliable timing in synchronous bus architectures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5V to 5.5V - ensures compatibility with standard 5V automotive and industrial rails, including worst-case battery droop scenarios. |
| Output Drive | ±8mA at 4.5V - sufficient to drive 10 LSTTL loads or terminate short PCB traces without external buffering. |
| Propagation Delay | tPD ≤ 7.0ns (CL = 50pF, –40°C to +125°C) - enables use in sub-100MHz clock distribution or data strobe paths. |
| 3-State Enable Time | tEN ≤ 6.5ns (CL = 50pF, –40°C to +125°C) - supports fast bus turnaround in multiplexed memory or peripheral interfaces. |
| Input Thresholds | VIH ≥ 2.0V, VIL ≤ 0.8V (VCC = 5V) - guarantees robust recognition of legacy TTL-level signals without level shifters. |
| High-Z Leakage | IOZ ≤ 10μA (–40°C to +125°C) - prevents unintended current paths when multiple buffers share a common bus line. |
| ESD Rating | HBM ≥ 2kV, CDM ≥ 1kV - exceeds AEC-Q100-002/-011 requirements for assembly-line handling and in-system reliability. |
Pinout & Package
SOT25 (3.0mm × 2.8mm × 1.2mm, 0.95mm pitch) surface-mount package with moisture sensitivity level 1 (J-STD-020) and matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A) | Data Input | Non-inverting logic input; accepts voltages up to 6.5V independent of VCC, enabling mixed-voltage interfacing. |
| 2 (OE) | Output Enable (Active-Low) | Asserting LOW enables buffer output; HIGH places Y in high-impedance state - critical for bus arbitration. |
| 3 (GND) | Ground Reference | Return path for all internal logic and output current; must be low-inductance connection to minimize ground bounce. |
| 4 (Y) | 3-State Output | Buffered, non-inverted copy of A when OE = LOW; presents <10μA leakage when OE = HIGH. |
| 5 (VCC) | Power Supply | Primary 4.5–5.5V supply; decoupling capacitor (≥100nF) required within 5mm for stable switching performance. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Enables reliable operation with slow or noisy signals (e.g., mechanical switch debouncing or long cable runs) without external hysteresis components. |
| AEC-Q100 Grade 1 qualification | Validated for continuous operation from –40°C to +125°C ambient, meeting automotive engine control unit (ECU) and body electronics requirements. |
| Input voltage tolerance beyond VCC | Accepts VI up to 6.5V regardless of VCC level - simplifies interface to higher-voltage sensors or legacy systems without clamping diodes. |
| Balanced propagation delays | tPLH ≈ tPHL - minimizes duty cycle distortion in clock forwarding or pulse-width preservation applications. |
| Low dynamic power consumption | CPD = 11pF - reduces switching current and heat generation in high-frequency bus environments (e.g., CAN/LIN transceiver control lines). |
Applications
| Automotive Body Control Module | Industrial PLC I/O Expansion |
|---|---|
Use Scenario: Isolating microcontroller GPIOs from high-noise solenoid driver circuits in door lock or lighting control units. IC Role / Device Role / Timing Role: 3-state buffer providing bidirectional bus isolation and noise-immune signal conditioning between MCU and power stage. Use Value: Schmitt-trigger inputs reject EMI from relay coil flyback; ±8mA drive directly interfaces with optocoupler inputs; AEC-Q100 qualification ensures field reliability. | Use Scenario: Expanding digital input capacity on modular PLC backplanes using shared data buses with multiple slave nodes. IC Role / Device Role / Timing Role: Bus driver enabling time-multiplexed sampling of discrete sensor inputs across a daisy-chained I/O rack. Use Value: Fast tEN/tDIS (≤6.5ns) allows sub-100ns bus turnaround; high-Z leakage <10μA prevents signal contention during node arbitration. |
| Automotive Infotainment Display Interface | Medical Diagnostic Equipment Control Logic |
Use Scenario: Level-shifting and buffering parallel address/data lines between 3.3V SoC and 5V display controller ICs in head-unit designs. IC Role / Device Role / Timing Role: Non-inverting buffer with VCC-independent inputs enabling safe 3.3V-to-5V translation without external resistors or translators. Use Value: VI tolerance to 6.5V eliminates need for series resistors on 3.3V logic driving 5V bus; Grade 1 temp range covers dashboard thermal cycling. | Use Scenario: Controlling LED status indicators and relay drivers in portable diagnostic devices requiring long-term stability and low failure rate. IC Role / Device Role / Timing Role: General-purpose logic buffer isolating MCU outputs from indicator loads while maintaining precise timing for status sequencing. Use Value: ICC ≤ 40μA max reduces standby power; latch-up immunity >100mA ensures resilience against transient overvoltage events in clinical environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AHCT1G125DBVR | SOT-23-5 package (same pinout), θJA = 218°C/W, rated for commercial temp only (–40°C to +85°C) | Lacks AEC-Q100 qualification and Grade 1 extended temperature support | Select only for non-automotive industrial or consumer applications where cost is prioritized over automotive compliance. |
| 74LVC1G125GW,125 | 1.65–5.5V supply range, lower drive (±24mA at 3.3V), no Schmitt-trigger inputs | Supports dual-supply systems but lacks noise immunity for slow-edge signals | Prefer when interfacing with 1.8V/2.5V logic families; avoid in high-EMI automotive harness environments. |
Compared with SN74AHCT1G125DBVR and 74LVC1G125GW,125, the 74AHCT1G125QW5-7 uniquely combines AEC-Q100 Grade 1 qualification, Schmitt-trigger inputs, and 5V-tolerant I/O in a thermally optimized SOT25 package-making it the only choice for safety-critical automotive bus isolation where signal integrity and temperature resilience are mandatory.
Availability
74AHCT1G125QW5-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC I/O expansion, and medical diagnostic equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74AHCT1G125QW5-7 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.
The 74AHCT logic family targets robust 5V digital interfacing in harsh environments, with design emphasis on noise immunity, wide operating temperature, and AEC-Q100 compliance for automotive subsystems.
FAQ
Can the 74AHCT1G125QW5-7 operate with a 3.3V supply?
No. The device requires a minimum supply voltage of 4.5V per its Recommended Operating Conditions. At 3.3V, input thresholds (VIH ≥ 2.0V) would not be met reliably, and output drive capability collapses. For 3.3V systems, consider the 74LVC1G125 instead, which supports 1.65–5.5V operation.
What is the maximum capacitive load this buffer can drive while maintaining specified timing?
The datasheet specifies switching characteristics up to CL = 50pF. Driving loads >50pF increases propagation delay nonlinearly and may exceed tPD ≤ 7.0ns guarantee. For 100pF loads, expect ~10–12ns delay and verify timing margins in final layout with IBIS simulation.
Is the SOT25 package lead-free and RoHS compliant?
Yes. The 74AHCT1G125QW5-7 uses matte tin-plated leads, is totally lead-free, and fully complies with EU RoHS directives 2002/95/EC, 2011/65/EU, and 2015/863/EU. It is also halogen- and antimony-free per Diodes' "Green" definition (<900ppm Br, <900ppm Cl, <1000ppm Sb).
Does the device require external pull-up or pull-down resistors on unused pins?
Yes. Per Recommended Operating Conditions Note 7, unused inputs must be tied to VCC or GND to prevent floating states that increase ICC and risk oscillation. OE should be pulled LOW if always enabled, or HIGH via 10kΩ resistor if permanently disabled; A must never float due to Schmitt-trigger hysteresis behavior.
74AHCT1G125QW5-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74AHCT
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 8mA, 8mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
74AHCT1G125QW5-7 FAQ
1.How can I place an order for 74AHCT1G125QW5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT1G125QW5-7 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 74AHCT1G125QW5-7 reliable?
The price and inventory of 74AHCT1G125QW5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT1G125QW5-7 is usually 5 days.
3.What payment methods are accepted for 74AHCT1G125QW5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT1G125QW5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT1G125QW5-7?
74AHCT1G125QW5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT1G125QW5-7 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 74AHCT1G125QW5-7?
For technical support, including 74AHCT1G125QW5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT1G125QW5-7 requirements.
6.How does Aetrix verify that 74AHCT1G125QW5-7 is sourced from the original manufacturer or authorized distributors?
All 74AHCT1G125QW5-7 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 74AHCT1G125QW5-7 meets industry standards.
7.What is the process for return or replacement of 74AHCT1G125QW5-7?
All 74AHCT1G125QW5-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT1G125QW5-7, 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 74AHCT1G125QW5-7 part is unused and in its original packaging.
Return procedure for 74AHCT1G125QW5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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