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Diodes Incorporated 74LVCE1G126FZ4-7
- Part No.:
- 74LVCE1G126FZ4-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-XFDFN
- Datasheet:
-
74LVCE1G126FZ4-7.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V 6DFN
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
74LVCE1G126FZ4-7 from Diodes Incorporated is a single non-inverting buffer gate with 3-state output, designed for voltage-level shifting and bus driving in mixed-voltage systems. It operates from 1.4 V to 5.5 V, tolerates 5.5 V inputs, delivers ±24 mA output drive at 3.3 V, and supports partial power-down via IOFF circuitry-enabling safe signal isolation in powered-down subsystems of portable computing and consumer electronics.
For engineers reviewing the 74LVCE1G126FZ4-7 datasheet, 74LVCE1G126FZ4-7 pinout, 74LVCE1G126FZ4-7 application, or 74LVCE1G126FZ4-7 equivalent, key selection criteria include its 1.4–5.5 V supply range, 5.5 V-tolerant inputs, IOFF-enabled partial power-down capability, and DFN1410 package thermal performance (θJA = 430°C/W).
Technical Context
This device implements a CMOS-based non-inverting buffer with active-high output enable (OE), enabling high-impedance (Z) state control for bidirectional bus management. Its IOFF circuitry actively disables outputs during power-down, preventing backflow current when VCC = 0 V-critical for hot-swap and multi-rail system integrity.
Switching performance is characterized across 1.5 V–5.0 V supplies: propagation delay tPD is 0.4–3.0 ns (CL = 15 pF), and enable/disable times (tEN/tDIS) range from 0.8–4.3 ns. Input transition rate tolerance (Δt/ΔV) is specified down to 5 ns/V at 5 V, supporting clean edge handling in noise-sensitive interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.4 V to 5.5 V - enables direct interface between 1.8 V, 2.5 V, 3.3 V, and 5 V logic domains without level shifters. |
| Input Voltage Tolerance | Up to 5.5 V - allows safe connection to higher-voltage buses while powered from lower VCC (e.g., 1.8 V supply with 3.3 V input). |
| Output Drive Strength | ±24 mA at 3.3 V - sufficient to drive 50 Ω transmission lines or multiple CMOS loads in compact portable designs. |
| IOFF Leakage Current | ±10 μA max - ensures negligible current flow during partial power-down, preserving battery life and preventing latch-up in unpowered sections. |
| Propagation Delay (tPD) | 0.4 ns min / 3.0 ns max at VCC = 3.3 V, CL = 15 pF - supports >300 MHz data rates in repeater or fanout applications. |
| ESD Protection | 2 kV HBM, 200 V MM - exceeds JEDEC standards for robustness in handheld and industrial assembly environments. |
| Operating Temperature | –40 °C to +85 °C - qualified for commercial and extended-temperature embedded applications including set-top boxes and navigation devices. |
Pinout & Package
74LVCE1G126FZ4-7 is housed in a 6-pin DFN1410 (1.4 mm × 1.0 mm, 0.5 mm pitch) package with wettable flanks. Pin 2 and Pin 5 are internally connected (GND). The package supports automated optical inspection (AOI) and offers low thermal resistance (θJA = 430°C/W, θJC = 190°C/W) on standard FR-4 PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | A | Data input - accepts 5.5 V-tolerant signals; compatible with TTL and CMOS logic families across supply voltages. |
| 2 | GND | Ground reference - internally tied to Pin 5; must be connected to system ground for stable operation and ESD path. |
| 3 | Y | Non-inverting buffered output - enters high-impedance state when OE = LOW; drives bidirectional data buses or isolated signal paths. |
| 4 | Vcc | Power supply - supplies core logic and output stage; decoupling capacitor (0.1 μF) required within 2 mm of this pin. |
| 5 | GND | Ground reference - internally tied to Pin 2; provides second ground path for improved noise immunity and thermal dissipation. |
| 6 | OE | Output enable (active HIGH) - controls 3-state output; LOW forces Y into high-Z; driven by microcontroller GPIO or system control logic. |
Key Features
| Feature | Design Value |
|---|---|
| Extended supply range | 1.4 V to 5.5 V - eliminates need for separate voltage regulators in multi-rail portable systems (e.g., notebook I/O hubs). |
| IOFF partial power-down | Active output disable at VCC = 0 V - prevents back-current damage when interfacing with live buses during sleep mode or hot-plug events. |
| 5.5 V input tolerance | VI up to 5.5 V regardless of VCC - enables direct connection to legacy 5 V peripherals without external clamping diodes or translators. |
| Low dynamic power | Cpd = 19 pF (enabled), 2–4 pF (disabled) - reduces switching power by >90% in standby, critical for battery-powered GPS and audio devices. |
| High-speed performance | tPD = 0.4 ns (min) at 3.3 V - supports clean signal re-timing in DDR clock trees and high-frequency sensor interface chains. |
Applications
| USB Peripheral Isolation | Mobile SoC I/O Expansion |
|---|---|
|
Use Scenario: Isolating USB 2.0 data lines during host controller power-down in tablets and e-readers. IC Role / Device Role / Timing Role: 3-state buffer controlled by PMIC's power-good signal to disconnect PHY from inactive controller. Use Value: Prevents back-current into unpowered USB transceiver, meeting USB-IF electrical compliance and extending battery runtime. |
Use Scenario: Expanding GPIO count from an application processor to peripheral sensors and displays in smartphones. IC Role / Device Role / Timing Role: Level-shifting buffer enabling 1.8 V SoC outputs to drive 3.3 V camera interface or display backlight control lines. Use Value: Eliminates discrete level translators, reducing BOM count and PCB area while maintaining <3 ns propagation skew across all channels. |
| Set-Top Box HDMI CEC Bus | Industrial PLC Digital Input Conditioning |
|
Use Scenario: Driving HDMI Consumer Electronics Control (CEC) bus shared among STB, TV, and AV receiver. IC Role / Device Role / Timing Role: Bidirectional bus driver with OE-controlled directionality and 5.5 V-tolerant inputs for legacy IR/CEC signal mixing. Use Value: Ensures interoperability across brands using different CEC voltage levels (3.3 V vs. 5 V), avoiding signal corruption during arbitration. |
Use Scenario: Conditioning 24 V digital input signals to 3.3 V microcontroller GPIO in programmable logic controllers. IC Role / Device Role / Timing Role: Input buffer with IOFF protection, allowing safe hot-swap of I/O modules while main CPU remains operational. Use Value: Enables maintenance without full system shutdown; ±10 μA IOFF leakage ensures no false triggering during module insertion/removal. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar non-inverting 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G126DBVR | TI part; identical function but rated only to 1.65–5.5 V supply; no 1.4 V operation; IOFF not specified. | Lacks sub-1.65 V support and guaranteed IOFF - unsuitable for ultra-low-power sleep modes below 1.65 V. | Select when operating strictly ≥1.65 V and IOFF is not required; verify layout compatibility with SOT-23-5 footprint. |
| 74LVC1G125FZ4-7 | Same Diodes package (DFN1410), but inverting buffer; otherwise matches supply range, drive, and IOFF specs. | Provides inverted logic polarity - requires board-level logic inversion or firmware compensation. | Choose only if system design requires active-low enable or signal inversion; pin-compatible drop-in replacement with functional change. |
Compared with SN74LVC1G126DBVR and 74LVC1G125FZ4-7, the 74LVCE1G126FZ4-7 uniquely supports 1.4 V operation and guaranteed IOFF, making it optimal for battery-critical, multi-voltage, and hot-swap-capable embedded systems where supply headroom and power sequencing integrity are essential.
Availability
74LVCE1G126FZ4-7 is available at Aetrix Electronics and suitable for USB peripheral isolation, mobile SoC I/O expansion, HDMI CEC bus driving, and industrial PLC digital input conditioning requiring stable component supply across automotive-grade temperature ranges and long-lifecycle production programs.
Supply support for 74LVCE1G126FZ4-7 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, low-power, and small-footprint solutions for consumer, computing, and industrial markets.
The 74LVCE1G126 belongs to Diodes' LVCE logic family, engineered for ultra-low-voltage operation (down to 1.4 V) and robust mixed-signal interfacing in space-constrained portable electronics and energy-efficient embedded systems.
FAQ
What is the minimum supply voltage at which 74LVCE1G126FZ4-7 guarantees full functionality?
The device is fully specified from 1.4 V to 5.5 V. At 1.4 V, it meets all recommended operating conditions-including VIH/VIL thresholds, output drive (±3 mA), and tPD ≤6.9 ns (CL = 15 pF). Below 1.4 V, only data retention is supported per datasheet Section 4.
Can 74LVCE1G126FZ4-7 safely interface a 3.3 V microcontroller with a 5 V sensor without external components?
Yes. Its 5.5 V-tolerant inputs allow direct connection of 5 V sensor outputs to the A pin while powered from 3.3 V. No series resistor or clamping diode is needed, provided VO remains within 0–VCC and IO limits (±24 mA) are not exceeded on Y.
How does the IOFF feature behave when VCC is disconnected?
When VCC = 0 V, the IOFF circuit disables both input and output structures, limiting leakage to ±10 μA even with 5.5 V applied to A, OE, or Y. This prevents current backflow into unpowered rails-a requirement for PCIe hot-plug and USB On-The-Go compliance.
Is the DFN1410 package of 74LVCE1G126FZ4-7 compatible with standard reflow profiles?
Yes. The "Green" molding compound and lead-free finish comply with IPC/JEDEC J-STD-020D moisture sensitivity level 1 (MSL1). Standard Pb-free reflow profiles (peak 260 °C, 10 s dwell) are supported; recommended pad layout is documented in Diodes AP02001.
74LVCE1G126FZ4-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74LVCE
- Package/Case:
- 6-XFDFN
- 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:
- 32mA, 32mA
- Voltage - Supply:
- 1.4V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X2-DFN1410-6
74LVCE1G126FZ4-7 FAQ
1.How can I place an order for 74LVCE1G126FZ4-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVCE1G126FZ4-7 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 74LVCE1G126FZ4-7 reliable?
The price and inventory of 74LVCE1G126FZ4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVCE1G126FZ4-7 is usually 5 days.
3.What payment methods are accepted for 74LVCE1G126FZ4-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVCE1G126FZ4-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVCE1G126FZ4-7?
74LVCE1G126FZ4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVCE1G126FZ4-7 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 74LVCE1G126FZ4-7?
For technical support, including 74LVCE1G126FZ4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVCE1G126FZ4-7 requirements.
6.How does Aetrix verify that 74LVCE1G126FZ4-7 is sourced from the original manufacturer or authorized distributors?
All 74LVCE1G126FZ4-7 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 74LVCE1G126FZ4-7 meets industry standards.
7.What is the process for return or replacement of 74LVCE1G126FZ4-7?
All 74LVCE1G126FZ4-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVCE1G126FZ4-7, 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 74LVCE1G126FZ4-7 part is unused and in its original packaging.
Return procedure for 74LVCE1G126FZ4-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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