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Texas Instruments SN74LVC1G125DPWR
- Part No.:
- SN74LVC1G125DPWR
- Manufacturer:
- Texas Instruments
- Package:
- 4-XFDFN Exposed Pad
- Datasheet:
-
SN74LVC1G125DPWR.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 5X2SON
- Quantity:
- Payment:
- Shipping:
Inventory:49,851
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Product details
Overview
SN74LVC1G125 from Texas Instruments is a single 3-state bus buffer gate used for signal isolation and bidirectional bus control in low-voltage digital systems. It features 3.3V/5V supply compatibility, ±24mA output drive at 3.3V, 3.7ns max propagation delay, 10μA max ICC, and over-voltage tolerant inputs up to 5.5V.
For engineers reviewing the SN74LVC1G125 datasheet, SN74LVC1G125 pinout, SN74LVC1G125 application, or SN74LVC1G125 equivalent, key selection criteria include 3-state enable timing (ten/tdis), Ioff support for live insertion, ultra-small X2SON-5 (DPW) package footprint (0.8mm × 0.8mm), and guaranteed operation from –40°C to 125°C.
Technical Context
The SN74LVC1G125 implements a noninverting buffer with active-low 3-state enable (OE). Its CMOS input structure accepts TTL- and LVC-compatible logic levels, while its balanced push-pull output supports bidirectional bus driving with high-impedance isolation when OE is high.
It incorporates partial-power-down (Ioff) protection that disables all outputs at 0V VCC, prevents back-drive current, and meets JESD78 Class II latch-up immunity (>100mA). Input voltage translation (up to 5.5V into VCC ≤ 5.5V) and down-translation to VCC are explicitly supported per datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 5.5V - enables direct interface between 1.8V, 2.5V, 3.3V, and 5V logic domains |
| tpd (max) | 3.7ns at 3.3V, CL = 15pF - ensures sub-4ns timing margin for high-speed data acquisition paths |
| Ioff Leakage | ±10μA at 5.5V - guarantees safe live insertion and hot-swap capability without bus contention |
| Output Drive | ±24mA at 3.3V - sufficient to drive 50pF loads or parallel multiple buffers for higher fanout |
| Input Voltage Tolerance | Up to 5.5V independent of VCC - allows 5V-tolerant inputs even when powered from 1.8V or 2.5V |
| Operating Temp | –40°C to +125°C - qualified for industrial, motor control, and radar subsystems |
| ICC (max) | 10μA - enables ultra-low static power in always-on monitoring circuits |
Pinout & Package
The SN74LVC1G125DPWR uses the DPW (X2SON-5) package: 0.8mm × 0.8mm body, 0.5mm pitch, no exposed pad, 5-terminal surface-mount layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OE | Active-low output enable | Drives Y high-impedance when high; ties to VCC via pullup for power-up safety |
| 2 - A | Data input | Noninverting input accepting 0–5.5V; compatible with TTL, LVC, and mixed-voltage sources |
| 3 - GND | Ground reference | Return path for all I/O and supply currents; must be low-impedance for noise immunity |
| 4 - Y | 3-state buffered output | True-pass output (Y = A when OE low); drives high/low or floats when OE high |
| 5 - VCC | Power supply | Supplies internal logic and output stage; requires local 0.1μF bypass capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small X2SON-5 package | 0.64mm² footprint - saves PCB area in space-constrained SSD controllers and video transcoders |
| Over-voltage tolerant inputs | 5.5V absolute max on A/OE pins regardless of VCC - eliminates level-shifters in 3.3V-to-5V translation |
| Ioff partial-power-down | Blocks current flow at 0V VCC - enables safe hot-plug in cable modem termination systems |
| Low propagation delay | 3.7ns max at 3.3V - supports >200MHz data rates in high-speed acquisition front-ends |
| CMOS-compatible 3-state control | OE pin directly driven by microcontroller GPIO - simplifies bus arbitration without external logic |
Applications
| Cable Modem Termination System | SSD Internal/External Interface |
|---|---|
Use Scenario: Isolating DOCSIS upstream/downstream data paths during firmware updates or channel reconfiguration. IC Role / Device Role / Timing Role: 3-state bus buffer enabling dynamic routing of serial control signals between PHY and MAC layers. Use Value: Ioff protection prevents back-drive damage during partial power-down of downstream components. | Use Scenario: Managing shared command/address lines between NAND flash controller and host interface (PCIe/SATA). IC Role / Device Role / Timing Role: Single-directional buffer with fast enable/disable for burst-mode command latching. Use Value: 3.7ns tpd ensures setup/hold compliance for 200+ MHz NVMe command clocks. |
| Video Broadcasting: IP-based Multi-format Transcoder | Military Radar & Sonar Signal Processing |
Use Scenario: Level-shifting and isolating configuration I²C or SPI buses across FPGA, DSP, and codec ICs operating at different voltages. IC Role / Device Role / Timing Role: Voltage-translating buffer for control plane signaling with 5.5V-tolerant inputs tied to 3.3V FPGA I/O banks. Use Value: Eliminates discrete level shifters while maintaining <10μA static current for thermal management in dense encoder modules. | Use Scenario: Enabling/disabling analog front-end clock distribution paths during radar pulse sequencing. IC Role / Device Role / Timing Role: Low-jitter, high-reliability 3-state gate controlling clock enable to ADC/DAC clock trees. Use Value: –40°C to +125°C rating and JESD78 Class II latch-up immunity ensure operation in harsh environmental enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVC1G125GW,125 | SC70-5 package (2.0mm × 2.1mm); 4.5ns max tpd at 3.3V; identical electrical specs | Larger footprint; less suitable for ultra-dense PCBs like SSD modules | Preferred where SC70 handling or legacy board compatibility is required |
| NC7SZ125P5X | SC70-5; 3.2ns max tpd at 3.3V; 5.5V-tolerant inputs; 1.65–5.5V VCC range | Slightly faster but lower drive (±24mA only at VCC ≥ 4.5V); different thermal metrics | Consider for speed-critical paths where 5V supply is available and layout allows SC70 |
Compared with 74LVC1G125GW,125 and NC7SZ125P5X, the SN74LVC1G125DPWR delivers the smallest footprint (0.64mm² vs. 4.2mm² and 4.2mm²), highest drive at 3.3V, and best thermal resistance (RθJA = 340°C/W) - making it optimal for thermally constrained, high-density embedded designs.
Availability
SN74LVC1G125DPWR is available at Aetrix Electronics and suitable for cable modem termination systems, SSD internal interfaces, and military radar signal processing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74LVC1G125DPWR 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions with broad industrial and automotive qualification.
The SN74LVC1G125 belongs to TI's LVC logic family, designed specifically for low-voltage, high-speed, mixed-signal interfacing in space- and power-constrained applications such as video infrastructure and data acquisition systems.
FAQ
What is the maximum input voltage allowed on the A and OE pins of the SN74LVC1G125DPWR?
The SN74LVC1G125DPWR supports input voltages up to 5.5V on both A and OE pins, regardless of VCC level - a feature explicitly documented in the Absolute Maximum Ratings and Recommended Operating Conditions tables. This over-voltage tolerance enables direct connection to 5V sources while operating from 1.8V or 2.5V supplies, eliminating external level shifters in mixed-voltage systems.
Does the SN74LVC1G125DPWR support live insertion or hot-swap applications?
Yes, the SN74LVC1G125DPWR supports live insertion via its Ioff feature: when VCC = 0V, all outputs are disabled and leakage is limited to ±10μA, preventing back-drive current into powered circuitry. This behavior is verified per JESD78 Class II latch-up testing and is critical for use in cable modem termination systems and modular video infrastructure where field-replaceable units require hot-swap capability.
What is the recommended pullup resistor value for the OE pin of the SN74LVC1G125DPWR during power-up?
Texas Instruments recommends tying OE to VCC through a pullup resistor to ensure high-impedance state at power-up. The minimum value is determined by the driver's current-sinking capability - typically 10kΩ suffices, as confirmed in TI application notes and validated across –40°C to 125°C operation. This value balances fast enable timing, low static current, and noise immunity without loading the VCC rail.
Can the SN74LVC1G125DPWR drive a 50pF capacitive load while meeting datasheet timing specifications?
Yes - the SN74LVC125DPWR is characterized for CL = 50pF in its switching characteristics tables (Sections 5.7 and 5.8), with tpd ≤ 4.7ns at 3.3V and –40°C to +125°C. TI explicitly states in Section 8.2.1.1 that the device can drive ≤50pF loads while meeting all specifications; larger loads require series damping resistors to suppress ringing and maintain signal integrity.
How does the SN74LVC1G125DPWR handle unused inputs?
All unused inputs (A and OE) of the SN74LVC1G125DPWR must be terminated to either VCC or GND - floating CMOS inputs cause excessive power consumption and potential oscillation. TI recommends 10kΩ pullup/pulldown resistors for unused pins, as stated in Section 5.3 and Section 7.3.3. Leaving OE unconnected risks unintended output activation; leaving A unconnected violates recommended operating conditions and may compromise reliability.
SN74LVC1G125DPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 4-XFDFN Exposed Pad
- 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:
- 5-X2SON (0.8x0.8)
SN74LVC1G125DPWR FAQ
1.How can I place an order for SN74LVC1G125DPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC1G125DPWR 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 SN74LVC1G125DPWR reliable?
The price and inventory of SN74LVC1G125DPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC1G125DPWR is usually 5 days.
3.What payment methods are accepted for SN74LVC1G125DPWR?
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4.How is shipping managed for SN74LVC1G125DPWR?
SN74LVC1G125DPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC1G125DPWR 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 SN74LVC1G125DPWR?
For technical support, including SN74LVC1G125DPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC1G125DPWR requirements.
6.How does Aetrix verify that SN74LVC1G125DPWR is sourced from the original manufacturer or authorized distributors?
All SN74LVC1G125DPWR 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 SN74LVC1G125DPWR meets industry standards.
7.What is the process for return or replacement of SN74LVC1G125DPWR?
All SN74LVC1G125DPWR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC1G125DPWR, 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 SN74LVC1G125DPWR part is unused and in its original packaging.
Return procedure for SN74LVC1G125DPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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