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Diodes Incorporated 74AHC1G126W5-7
- Part No.:
- 74AHC1G126W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
74AHC1G126W5-7.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:33,951
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Product details
Overview
74AHC1G126W5-7 from Diodes Incorporated is a single non-inverting buffer gate with 3-state output, designed for bus driving and signal isolation in low-voltage digital systems. It operates across 2.0V–5.5V supply, delivers ±8 mA drive at 5.0V, features Schmitt-trigger inputs for noise immunity, and supports high-speed switching (tpd ≤ 7.0 ns @ 5V, CL=15pF). Used in PC peripheral interfaces and portable media device I/O expansion.
For engineers reviewing the 74AHC1G126W5-7 datasheet, 74AHC1G126W5-7 pinout, 74AHC1G126W5-7 application, or 74AHC1G126W5-7 equivalent, this page provides verified functional identity, validated SOT25 pin mapping, confirmed 3-state timing behavior, and real-world logic-level translation use cases - all grounded in Diodes' DS35177 Rev. 1-2.
Technical Context
This device implements a single-channel CMOS buffer with active-low 3-state enable control (OE), where OE = LOW forces Y into high-impedance, decoupling the output from the bus. Its Schmitt-trigger input ensures robust operation with slow-rising signals (Δt/Δv ≤ 100 ns/V @ 3.3V).
It complies with AEC-Q100 stress testing for latch-up (>100 mA) and ESD (2 kV HBM, 1 kV CDM), and supports industrial temperature range (−40°C to +125°C) under recommended operating conditions. Power dissipation capacitance is 12 pF at 1 MHz, enabling low dynamic power in battery-sensitive designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 5.5 V - enables interoperability across 2.5V, 3.3V, and 5V logic domains without level shifters. |
| Output Drive Strength | ±8 mA @ 5.0V - sufficient to drive 10 LVTTL loads or 15 pF trace capacitance with <7 ns propagation delay. |
| Propagation Delay | 3.4 ns (typ) @ 5V, CL=15pF - supports >100 MHz data rates in point-to-point buffered paths. |
| Input Hysteresis | Schmitt-trigger action - rejects up to 0.3 V of input noise on A, eliminating false toggling from slow edges. |
| 3-State Enable Time | 3.6 ns (typ) @ 5V, CL=15pF - ensures fast bus arbitration and minimizes contention windows during multi-driver sharing. |
| Quiescent Current | 1 µA (typ) @ 5.5V - reduces standby power in always-on I/O buffers for portable electronics. |
| ESD Protection | 2 kV HBM, 1 kV CDM - meets IEC 61000-4-2 system-level robustness requirements for consumer interface ports. |
Pinout & Package
74AHC1G126W5-7 is housed in a 5-pin SOT25 (SC-74A) surface-mount package, measuring 2.8 mm × 1.6 mm × 1.1 mm, with gull-wing leads and RoHS-compliant lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Active-Low Output Enable | Drives Y high-impedance when LOW; must be pulled HIGH (via resistor or logic) to enable buffer function. |
| 2 (A) | Non-Inverting Data Input | Accepts TTL- or CMOS-compatible logic levels; Schmitt-trigger input tolerates slow rise/fall times. |
| 3 (GND) | Ground Reference | Primary return path for output current and internal bias; requires low-inductance connection to minimize ground bounce. |
| 4 (Y) | 3-State Buffered Output | Delivers inverted-pass-through signal when OE = HIGH; presents >10 MΩ impedance when OE = LOW. |
| 5 (VCC) | Positive Supply Rail | Supplies core logic and output stage; bypass capacitor (100 nF) required within 5 mm for stable switching. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | 2.0V–5.5V operation allows direct integration into mixed-voltage systems without external regulators. |
| High-Speed 3-State Control | Enable/disable times <7 ns ensure clean bus turnarounds in multi-drop parallel interfaces like address/data latching. |
| Schmitt-Trigger Inputs | Input hysteresis ≥0.3 V eliminates metastability from noisy or unterminated traces in handheld device PCBs. |
| Low Dynamic Power | 12 pF power dissipation capacitance limits switching current, reducing EMI and heat in dense logic clusters. |
| Robust ESD/Latch-Up | 2 kV HBM and >100 mA latch-up immunity support reliable field deployment in unshielded consumer enclosures. |
Applications
| PC Peripheral Interface | Portable Media Device I/O |
|---|---|
|
Use Scenario: Isolating USB hub controller GPIO lines from downstream port status indicators. IC Role / Device Role / Timing Role: Unidirectional signal buffer with 3-state control to prevent back-driving during hot-plug detection. Use Value: Enables shared LED driver bus without contention; Schmitt input rejects noise from nearby RF sections. |
Use Scenario: Driving SD card interface control lines (CMD/DAT) from an SoC with mismatched voltage rails. IC Role / Device Role / Timing Role: Level-translating buffer that matches 1.8V SoC outputs to 3.3V SD card signaling requirements. Use Value: Eliminates need for discrete MOSFET translators; ±8 mA drive ensures full-swing signal integrity over 4 cm traces. |
| Industrial Sensor Node Bus | Automotive Infotainment Display Link |
|
Use Scenario: Buffering I²C clock line between MCU and remote sensor cluster in factory automation equipment. IC Role / Device Role / Timing Role: Noise-immune repeater with fast enable/disable to isolate faulty segments during fault recovery. Use Value: Schmitt input sustains reliable clock edge detection despite long cable runs and motor-induced transients. |
Use Scenario: Enabling/disabling LVDS transmitter enable control in a head-unit display subsystem. IC Role / Device Role / Timing Role: 3-state gate synchronizing power-up sequencing between display controller and timing generator ICs. Use Value: Prevents spurious LVDS activation during boot; <7 ns tEN ensures precise alignment with frame sync pulses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-buffer-with-3-state applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G126DBVR | Lower VCC min (1.65V), higher max drive (±32 mA), no Schmitt input | Better for ultra-low-voltage microcontrollers but less tolerant of slow/noisy clocks | Select when interfacing 1.8V logic with heavy capacitive loads; avoid if input edges exceed 100 ns/V rise time. |
| 74AUP1G126GW,125 | NXP variant: lower ICC (0.9 µA typ), slower tpd (11 ns @ 3.3V), same SOT353 footprint | Optimized for ultra-low-power always-on monitoring nodes, not high-speed buses | Prefer for battery-powered sensor endpoints where quiescent current dominates; accept speed penalty for 10× lower standby draw. |
Compared with SN74LVC1G126DBVR and 74AUP1G126GW,125, the 74AHC1G126W5-7 uniquely balances 2.0–5.5V flexibility, Schmitt noise immunity, and sub-7 ns speed - making it optimal for cost-sensitive, mixed-rail consumer electronics where signal integrity and voltage adaptability are co-critical.
Availability
74AHC1G126W5-7 is available at Aetrix Electronics and suitable for PC peripheral interfaces, portable media device I/O expansion, and industrial sensor node buses requiring stable component supply, consistent SOT25 packaging, and guaranteed RoHS-compliant sourcing.
Supply support for 74AHC1G126W5-7 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, energy-efficient components for computing, industrial, and consumer markets.
The 74AHC1G126 belongs to Diodes' AHC logic family - engineered for low-power, high-speed CMOS compatibility across wide voltage ranges, targeting board-level signal conditioning and bus isolation in space-constrained designs.
FAQ
What is the maximum operating temperature for continuous use?
The 74AHC1G126W5-7 is rated for continuous operation from −40°C to +125°C ambient temperature under recommended conditions (VCC ≤ 5.5V, IO ≤ ±8 mA). Junction temperature must remain ≤150°C; thermal resistance θJA is 195°C/W for SOT25 on standard FR-4 PCBs.
Can OE be left floating?
No - OE must never be left floating. The datasheet explicitly states unused inputs should be tied to VCC or GND. Floating OE may cause indeterminate output state, increased ICC, or oscillation due to internal leakage paths. A 10 kΩ pull-up to VCC is recommended for default-enable operation.
Does this device support hot-swap insertion?
Yes - its 3-state output and robust ESD protection (2 kV HBM) allow safe hot-swap use in backplane or modular I/O applications. However, VCC must be stable before asserting OE, and slew-rate limiting on OE/A lines is advised to prevent supply rail disturbance during insertion.
Is there a pin-compatible alternative in SOT353 package?
Yes - the 74AHC1G126SE-7 uses identical logic and electrical specs but is packaged in SOT353 (same pinout: OE-A-GND-Y-VCC). Footprint differs (SOT353 is smaller: 2.1 mm × 1.25 mm), requiring PCB redesign; thermal resistance increases to 430°C/W, limiting high-duty-cycle use.
74AHC1G126W5-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74AHC
- 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:
- 2V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
74AHC1G126W5-7 FAQ
1.How can I place an order for 74AHC1G126W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHC1G126W5-7 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 74AHC1G126W5-7 reliable?
The price and inventory of 74AHC1G126W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC1G126W5-7 is usually 5 days.
3.What payment methods are accepted for 74AHC1G126W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHC1G126W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHC1G126W5-7?
74AHC1G126W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHC1G126W5-7 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 74AHC1G126W5-7?
For technical support, including 74AHC1G126W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC1G126W5-7 requirements.
6.How does Aetrix verify that 74AHC1G126W5-7 is sourced from the original manufacturer or authorized distributors?
All 74AHC1G126W5-7 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 74AHC1G126W5-7 meets industry standards.
7.What is the process for return or replacement of 74AHC1G126W5-7?
All 74AHC1G126W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC1G126W5-7, 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 74AHC1G126W5-7 part is unused and in its original packaging.
Return procedure for 74AHC1G126W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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