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Diodes Incorporated 74LVC1G125SE-7
- Part No.:
- 74LVC1G125SE-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
74LVC1G125SE-7.pdf
- Description:
- IC BUFF NON-INVERT 5.5V SOT353
- Quantity:
- Payment:
- Shipping:
Inventory:2,242
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Product details
Overview
74LVC1G125SE-7 from Diodes Incorporated is a single non-inverting 3-state buffer IC designed for voltage-level shifting and bus isolation in mixed-voltage digital systems. It operates from 1.65V to 5.5V, tolerates 5.5V inputs, delivers ±24mA output drive at 3.3V, and features IOFF circuitry for partial power-down protection-used in notebook I/O expansion, peripheral interface isolation, and embedded control signal routing.
For engineers reviewing the 74LVC1G125SE-7 datasheet, 74LVC1G125SE-7 pinout, 74LVC1G125SE-7 application, or 74LVC1G125SE-7 equivalent, key selection criteria include 3-state enable timing (tpd ≤ 4.5ns @ 3.3V), input voltage tolerance (up to 5.5V), IOFF leakage (<200μA), thermal resistance (θJA = 371°C/W), and SOT353 package compatibility with space-constrained PCB layouts.
Technical Context
This device implements a CMOS-based single-gate buffer with active-low 3-state output enable (OE). Its IOFF architecture disables both output FETs during power-down, preventing back-current flow when VCC = 0V while inputs/outputs remain biased up to 5.5V.
The logic function follows a simple truth table: OE = LOW enables non-inverting pass-through (Y = A); OE = HIGH forces high-impedance (Y = Z). Propagation delay (tpd) ranges from 0.5ns (5V) to 3.3ns (1.8V); enable/disable times (ten/tdis) are matched within 0.5–7.0ns across supply voltages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65V to 5.5V - supports direct interfacing between 1.8V, 2.5V, 3.3V, and 5V logic domains without level shifters. |
| Input Voltage Tolerance | Up to 5.5V - allows connection to higher-voltage buses while powered from lower VCC (e.g., 1.8V core). |
| Output Drive Strength | ±24mA at 3.3V - sufficient to drive multiple LVC loads or short PCB traces without external buffering. |
| IOFF Leakage Current | ±200μA max at -40°C to +125°C - ensures safe hot-insertion and partial power-down in multi-rail systems. |
| Propagation Delay | 0.5ns to 4.5ns (VCC = 1.8V to 5.0V) - enables use in high-speed control paths up to ~200MHz toggle rate. |
| ESD Protection | 2kV HBM, 1kV CDM, 200V MM - exceeds JEDEC standards for robustness in handling and board assembly. |
| Operating Temperature | -40°C to +125°C - qualified for industrial and extended-temperature embedded applications. |
Pinout & Package
SOT353 (2.0mm × 2.0mm × 1.1mm, 0.65mm pitch) - ultra-compact 5-pin surface-mount package with exposed pad option; optimized for high-density routing and thermal performance in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A) | Data Input | Non-inverting logic input; accepts 0–5.5V regardless of VCC; internally clamped. |
| 2 (OE) | Output Enable (Active-Low) | Low = output enabled (Y = A); High = output disabled (high-Z); IOFF active when VCC = 0V. |
| 3 (GND) | Ground Reference | Primary return path for all internal currents; must be low-impedance for noise immunity. |
| 4 (Y) | 3-State Output | Buffered non-inverting output; drives high/low or floats; supports bus sharing. |
| 5 (VCC) | Power Supply | Core supply rail (1.65–5.5V); powers internal logic and output stage; bypass capacitor required. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | 1.65V–5.5V operation enables drop-in replacement across legacy and modern low-voltage systems. |
| 5.5V-Tolerant Inputs | Eliminates need for external level translators when interfacing with 5V peripherals on sub-3.3V boards. |
| IOFF Partial Power-Down | Prevents destructive current flow during VCC ramp-up/down or hot-swap events in multi-supply designs. |
| Low Dynamic Power | ICC < 10μA typical at 3.3V - reduces quiescent load on battery-backed or energy-sensitive subsystems. |
| Small Footprint | SOT353 package saves >40% board area vs. SOIC-5; compatible with standard pick-and-place equipment. |
Applications
| USB Peripheral Isolation | Embedded Microcontroller GPIO Expansion |
|---|---|
Use Scenario: Isolating USB data lines (D+/D−) from host MCU during suspend mode to prevent back-powering. IC Role / Device Role / Timing Role: 3-state buffer controlled by MCU's suspend signal; enables/disables physical layer connectivity. Use Value: Prevents current leakage into powered-down USB PHY; meets USB 2.0 suspend current limits (<500μA). |
Use Scenario: Expanding limited GPIO count on an ARM Cortex-M0+ MCU for sensor polling and LED control. IC Role / Device Role / Timing Role: Non-inverting buffer with OE tied to system enable rail; adds isolated, drive-capable I/O pins. Use Value: Delivers ±24mA per channel-enough to directly drive LEDs or small relays without discrete transistors. |
| Laptop Docking Station Signal Routing | Industrial PLC Digital Input Conditioning |
Use Scenario: Routing HDMI CEC or SMBus signals between dock and laptop chassis with voltage domain separation. IC Role / Device Role / Timing Role: Level-shifting buffer bridging 3.3V laptop logic and 5V dock peripherals via 5.5V-tolerant inputs. Use Value: Eliminates need for dual-supply translators; maintains signal integrity with <4.5ns propagation delay. |
Use Scenario: Conditioning 24V industrial sensor outputs to 3.3V microcontroller inputs using resistive divider + buffer. IC Role / Device Role / Timing Role: Input buffer isolating MCU from noisy field wiring; OE used for diagnostic disable. Use Value: IOFF protection prevents damage during field-wiring faults; ESD rating withstands factory handling. |
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 | TI part in SOT-23-5 (same pinout); slightly higher ICC (20μA max) and lower ESD (1.5kV HBM). | Valid for cost-sensitive consumer designs but less robust in industrial environments. | Choose if TI supply chain alignment or existing SOT-23 footprint reuse is prioritized over ESD margin. |
| 74AUP1G125GW,125 | Nexperia part in SC-70-5; lower static current (0.9μA typ), wider temp range (−40°C to +125°C), but only 3.6V max VCC. | Suitable for ultra-low-power battery devices but incompatible with 5V interfaces. | Prefer for energy-harvesting or wearable applications where 5V tolerance is unnecessary. |
Compared with SN74LVC1G125DBVR and 74AUP1G125GW,125, the 74LVC1G125SE-7 uniquely balances 5.5V input tolerance, industrial-grade ESD, and SOT353 compactness-making it optimal for portable electronics requiring mixed-voltage interoperability and board-area efficiency.
Availability
74LVC1G125SE-7 is available at Aetrix Electronics and suitable for notebook I/O expansion, industrial PLC digital input conditioning, and embedded microcontroller GPIO expansion requiring stable component supply and long-term manufacturability.
Supply support for 74LVC1G125SE-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 semiconductor company specializing in discrete, analog, and logic solutions for industrial, computing, and consumer markets-with emphasis on reliability, efficiency, and miniaturization.
The 74LVC logic family targets high-speed, low-voltage digital interfacing applications, delivering pin-compatible replacements for legacy TTL and CMOS with enhanced power efficiency and voltage flexibility.
FAQ
Can the 74LVC1G125SE-7 operate with VCC = 1.5V?
No. The recommended minimum operating voltage is 1.65V per the datasheet's Recommended Operating Conditions. At 1.5V, parameters like VOL, VOH, and tpd are not guaranteed, and functionality may fail-especially under temperature extremes or capacitive loads.
Is the NC pin on the SOT353 package electrically connected?
No. Pin 3 in the SOT353 top-view diagram is labeled "NC" (No Connection) and is not bonded internally. It must remain unconnected on the PCB; soldering or routing to this pad provides no electrical benefit and risks mechanical stress or shorts.
What is the maximum capacitive load the 74LVC1G125SE-7 can drive reliably?
The device is characterized up to 50pF load capacitance (per switching characteristics test conditions). Driving >50pF increases propagation delay and may cause ringing or timing violations-external series termination or buffer staging is recommended beyond this limit.
Does the IOFF feature require external pull-up/pull-down resistors on A or Y when VCC = 0V?
No. IOFF actively disables the output FETs regardless of OE state when VCC = 0V, limiting leakage to ±200μA. External resistors are unnecessary for back-current prevention-but may still be needed for defined logic states during system reset sequences.
74LVC1G125SE-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74LVC
- 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:
- 32mA, 32mA
- Voltage - Supply:
- 1.65V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-353
74LVC1G125SE-7 FAQ
1.How can I place an order for 74LVC1G125SE-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC1G125SE-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 74LVC1G125SE-7 reliable?
The price and inventory of 74LVC1G125SE-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC1G125SE-7 is usually 5 days.
3.What payment methods are accepted for 74LVC1G125SE-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC1G125SE-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC1G125SE-7?
74LVC1G125SE-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC1G125SE-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 74LVC1G125SE-7?
For technical support, including 74LVC1G125SE-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC1G125SE-7 requirements.
6.How does Aetrix verify that 74LVC1G125SE-7 is sourced from the original manufacturer or authorized distributors?
All 74LVC1G125SE-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 74LVC1G125SE-7 meets industry standards.
7.What is the process for return or replacement of 74LVC1G125SE-7?
All 74LVC1G125SE-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC1G125SE-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 74LVC1G125SE-7 part is unused and in its original packaging.
Return procedure for 74LVC1G125SE-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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