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Diodes Incorporated 74AHC1G125QSE-7
- Part No.:
- 74AHC1G125QSE-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
74AHC1G125QSE-7.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V SOT353
- Quantity:
- Payment:
- Shipping:
Inventory:2,955
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Product details
Overview
74AHC1G125QSE-7 from Diodes Incorporated is an automotive-grade single non-inverting buffer with 3-state output, designed for bus driving and signal isolation in high-reliability systems. It operates from 2.0V to 5.5V, delivers ±8mA drive at 4.5V, features Schmitt-trigger inputs for noise immunity, and supports Grade 1 temperature range (–40°C to +125°C) - used in automotive body control modules requiring robust level translation and output disable control.
For engineers reviewing the 74AHC1G125QSE-7 datasheet, 74AHC1G125QSE-7 pinout, 74AHC1G125QSE-7 application, or 74AHC1G125QSE-7 equivalent, this device is selected for its AEC-Q100 qualification, low propagation delay (≤7.0 ns at 5V), precise 3-state timing (tEN/tDIS ≤9.5 ns), and compatibility with mixed-voltage logic interfacing in constrained PCB layouts.
Technical Context
This logic buffer implements a single-channel non-inverting amplification path with active-low 3-state enable control. Its Schmitt-trigger input ensures reliable switching under slow-rising signals, while balanced drive capability (±8mA) and matched propagation delays support bidirectional bus integrity in automotive serial communication nodes.
The device uses advanced AHC CMOS technology to achieve rail-to-rail output swing, low static current (≤40 µA), and ESD robustness (2 kV HBM, 1 kV CDM). It is fully specified across –40°C to +125°C ambient, with thermal resistance θJA = 385°C/W in SOT353 package - critical for under-hood applications without forced airflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0V to 5.5V - enables direct interface with 3.3V and 5V logic families without level shifters. |
| Output Drive Strength | ±8mA at VCC = 4.5V - sufficient to drive 15pF loads with <9.5ns tPD and <11.5ns tDIS across full temp range. |
| Propagation Delay | 3.4ns (typ) at 5V, CL = 15pF - ensures timing-critical signal buffering in CAN/LIN subsystems and sensor interfaces. |
| Input Hysteresis | Typical 0.3V (Schmitt-trigger) - rejects noise on long traces or unshielded wiring in vehicle harnesses. |
| 3-State Enable Timing | tEN = 3.6ns (typ), tDIS = 4.1ns (typ) at 5V - guarantees clean bus release before next master transmission cycle. |
| Ambient Temp Range | –40°C to +125°C (Grade 1) - qualified per AEC-Q100 Rev G for engine bay and powertrain control units. |
| ESD Protection | 2000V HBM, 1000V CDM - exceeds AEC-Q100-002/-011 requirements for assembly-line handling and field operation. |
Pinout & Package
SOT353 (SC-70-5) package: 2.15mm × 2.1mm × 1.1mm, 0.65mm pitch, matte tin-plated leads, moisture sensitivity Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Output Enable (active-low) | Drives Y to high-impedance when HIGH; enables bus sharing by disabling driver during arbitration or standby. |
| 2 (A) | Data Input | Non-inverting logic input with Schmitt-trigger threshold - accepts slow edges from microcontroller GPIO or analog comparators. |
| 3 (GND) | Ground Reference | Return path for all internal logic and output current; requires low-inductance connection to minimize ground bounce. |
| 4 (Y) | 3-State Output | Buffered, rail-to-rail output; sinks or sources up to ±8mA only when OE is LOW; floats when OE is HIGH. |
| 5 (VCC) | Power Supply | Core supply for logic and output stage; decoupling capacitor (100nF) required within 3mm of pin for stable switching. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Qualification | AEC-Q100 Grade 1 qualified, PPAP-capable, manufactured in IATF 16949-certified facilities - meets OEM sourcing requirements. |
| Input Voltage Tolerance | Inputs operate independently of VCC (VI = –0.5V to 6.5V) - allows hot-swap and mixed-supply system integration. |
| Low-Power Operation | ICC ≤ 40µA max at 125°C - reduces thermal load in densely packed ECUs and extends battery life in always-on modules. |
| Thermal Performance | θJA = 385°C/W in SOT353 - enables operation at full rating without heatsink in ambient ≤85°C environments. |
| Green Compliance | Totally lead-free, halogen- and antimony-free (<900ppm Br/Cl, <1000ppm Sb) - satisfies EU RoHS 3 and automotive ELV directives. |
Applications
| Automotive Body Control Module | Industrial Sensor Interface Hub |
|---|---|
|
Use Scenario: Signal conditioning and bus isolation between microcontroller GPIO and LIN transceiver or door lock actuator driver. IC Role / Device Role / Timing Role: Non-inverting buffer with 3-state output enables shared LIN bus arbitration and prevents back-driving during sleep mode. Use Value: Schmitt-trigger input rejects EMI from motor commutation; ±8mA drive ensures fast edge rates into 15pF LIN bus capacitance. |
Use Scenario: Level-shifting and enable-controlled routing of analog sensor outputs (e.g., pressure, temperature) to ADC inputs in programmable logic controllers. IC Role / Device Role / Timing Role: Logic buffer isolates ADC reference domain from noisy digital domains; OE pin synchronizes sampling windows. Use Value: 2.0–5.5V supply range matches both 3.3V ADC references and 5V sensor excitation rails; low ICC minimizes self-heating error. |
| Automotive Infotainment Display Backlight Control | High-Reliability Network PHY Interface |
|
Use Scenario: Enabling/disabling PWM dimming signals to LED driver ICs based on display power state in head unit assemblies. IC Role / Device Role / Timing Role: 3-state buffer gates PWM path to prevent unintended backlight activation during boot or firmware update. Use Value: tDIS ≤8.5ns at 125°C ensures rapid shutdown before power sequencing completes; Grade 1 rating sustains reliability near display heat sources. |
Use Scenario: Isolating MDIO/MDC management signals between Ethernet MAC and PHY in automotive gateway modules. IC Role / Device Role / Timing Role: Bidirectional bus buffer with controlled enable timing prevents signal contention during PHY reset sequences. Use Value: Matched tEN/tDIS (≤9.5ns) and tPD (≤7.0ns) maintain IEEE 802.3 compliance for MDIO setup/hold timing margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G125DBVR | Wider VCC range (1.65–5.5V); lower drive (±24mA at 3.3V); no AEC-Q100 qualification. | Not suitable for automotive Grade 1 environments; acceptable for industrial controls with tighter voltage margins. | Select only if AEC-Q100 is not required and 1.65V operation is needed for ultra-low-power MCU interfaces. |
| 74AUP1G125GW,125 | Lower ICC (≤1µA), slower speed (tPD ≤12.4ns at 3.3V), same AEC-Q100 Grade 1 qualification. | Better for always-on battery-powered nodes where leakage dominates; less suitable for high-speed bus arbitration. | Prefer when static power budget is <1µA and timing slack >12ns exists in the signal path. |
Compared with SN74LVC1G125DBVR and 74AUP1G125GW,125, the 74AHC1G125QSE-7 uniquely balances AEC-Q100 Grade 1 compliance, 7ns propagation delay at 5V, and ±8mA drive - making it optimal for time-critical automotive bus drivers where qualification and speed are jointly mandatory.
Availability
74AHC1G125QSE-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interface hubs, infotainment display backlight control, and high-reliability network PHY interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74AHC1G125QSE-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.
The 74AHC logic family targets automotive and industrial applications requiring wide supply range, AEC-Q100 qualification, and robust noise immunity - specifically engineered for signal integrity in electrically harsh environments.
FAQ
What is the maximum operating junction temperature for the 74AHC1G125QSE-7?
The absolute maximum junction temperature is +150°C, and the recommended operating junction temperature range is –40°C to +150°C. At ambient +125°C and full load, thermal derating must be applied using θJA = 385°C/W to ensure TJ remains within limit - typical power dissipation is ≤250mW at DC conditions.
Can the 74AHC1G125QSE-7 be used with 1.8V logic inputs?
No - the minimum recommended VCC is 2.0V, and VIH/VIL thresholds scale with VCC (e.g., VIH ≥ 3.85V at VCC = 5.5V). A 1.8V input may not meet VIH specification even at lowest VCC; use 74AUP or LVC series for true 1.8V compatibility.
Is the SOT353 package lead-free and RoHS compliant?
Yes - the 74AHC1G125QSE-7 uses matte tin-plated leads, contains no intentionally added lead, and complies fully with EU RoHS 2015/863/EU (RoHS 3), including halogen- and antimony-free construction (<900ppm Br/Cl, <1000ppm Sb).
Does the device require external pull-up or pull-down resistors on unused pins?
Yes - per datasheet Note 7, unused inputs (A and OE) must be tied to VCC or GND to prevent floating states that cause increased ICC and potential oscillation. OE should be pulled LOW for active operation or HIGH for 3-state; A must be fixed to avoid undefined output behavior.
74AHC1G125QSE-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:
- 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:
- 2V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-353
74AHC1G125QSE-7 FAQ
1.How can I place an order for 74AHC1G125QSE-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHC1G125QSE-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 74AHC1G125QSE-7 reliable?
The price and inventory of 74AHC1G125QSE-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC1G125QSE-7 is usually 5 days.
3.What payment methods are accepted for 74AHC1G125QSE-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHC1G125QSE-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHC1G125QSE-7?
74AHC1G125QSE-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHC1G125QSE-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 74AHC1G125QSE-7?
For technical support, including 74AHC1G125QSE-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC1G125QSE-7 requirements.
6.How does Aetrix verify that 74AHC1G125QSE-7 is sourced from the original manufacturer or authorized distributors?
All 74AHC1G125QSE-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 74AHC1G125QSE-7 meets industry standards.
7.What is the process for return or replacement of 74AHC1G125QSE-7?
All 74AHC1G125QSE-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC1G125QSE-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 74AHC1G125QSE-7 part is unused and in its original packaging.
Return procedure for 74AHC1G125QSE-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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