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Texas Instruments 74LVC1G125DRLRG4
- Part No.:
- 74LVC1G125DRLRG4
- Manufacturer:
- Texas Instruments
- Package:
- SOT-553
- Datasheet:
-
74LVC1G125DRLRG4.pdf
- Description:
- IC BUFF NON-INVERT 5.5V SOT553
- Quantity:
- Payment:
- Shipping:
Inventory:4,718
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Product details
Overview
74LVC1G125DRLRG4 from Texas Instruments is a single 3-state bus buffer gate used for signal isolation and controlled data routing on low-voltage digital buses. It features true noninverting logic, 3.3V/5V supply compatibility (1.65–5.5V), ±24mA output drive at 3.3V, 3.7ns max propagation delay, and Ioff support for live insertion in partial-power-down systems.
For engineers reviewing the 74LVC1G125DRLRG4 datasheet, 74LVC1G125DRLRG4 pinout, 74LVC1G125DRLRG4 application, or 74LVC1G125DRLRG4 equivalent, key selection criteria include its SOT-5X3 (DRL) 5-pin ultra-small package, over-voltage tolerant inputs (up to 5.5V), balanced CMOS 3-state outputs, and operation across –40°C to 125°C industrial temperature range.
Technical Context
The 74LVC1G125DRLRG4 implements a single noninverting buffer with active-low 3-state enable (OE). Its output enters high-impedance when OE is high, and passes A→Y when OE is low - enabling bidirectional bus control without inversion. The device uses standard CMOS inputs with input transition rate limits (5 ns/V at 5V) and includes clamp diodes only on negative side.
It supports mixed-voltage interfacing via over-voltage tolerant inputs (VI up to 5.5V independent of VCC) and down-translation to VCC. Ioff functionality ensures zero current flow during power-off, preventing back-drive and enabling hot-swap capability in powered-backplane applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 5.5V - enables direct interface with 1.8V, 2.5V, 3.3V, and 5V logic domains |
| Max Propagation Delay | 3.7ns at 3.3V, CL = 15pF - supports >200MHz data rates in short-bus configurations |
| Output Drive | ±24mA at 3.3V - sufficient to drive multiple LVC loads or moderate PCB trace capacitance |
| Input Voltage Tolerance | Up to 5.5V regardless of VCC - allows safe connection to 5V signals while operating at 3.3V or lower |
| Ioff Current | ±10μA max at 5.5V - prevents leakage-induced logic corruption during system power sequencing |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial motor control, and telecom infrastructure |
| ICC (Quiescent) | 10μA max - enables use in always-on monitoring circuits without significant standby power penalty |
Pinout & Package
SOT-5X3 (DRL) package: 0.8mm × 0.8mm body, 0.5mm pitch, 5-terminal surface-mount with exposed pad (no thermal pad connection required).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OE | Active-low output enable | Drives Y into high-impedance when high; must be pulled up to VCC during power-up to avoid bus contention |
| 2 - A | Data input | Noninverting input accepting 0–5.5V; compatible with TTL and CMOS logic families |
| 3 - GND | Ground reference | Primary return path for all I/O and supply currents; requires low-inductance connection to system ground plane |
| 4 - Y | 3-state buffered output | True replica of A when OE is low; high-Z when OE is high; capable of sourcing/sinking ±24mA |
| 5 - VCC | Power supply | Supplies internal logic and output drivers; requires local 0.1μF ceramic bypass capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Over-voltage tolerant inputs | Accepts up to 5.5V regardless of VCC setting - eliminates level-shifter need in mixed-supply systems |
| Ioff partial-power-down protection | Blocks current flow between powered and unpowered sections - enables hot-plug capability in modular systems |
| Balanced CMOS 3-state outputs | Sinks and sources equal current (±24mA at 3.3V) - ensures symmetrical rise/fall times and reduced EMI |
| Ultra-small DRL package | 0.64mm² footprint (0.8mm × 0.8mm) - saves board space in dense portable and IoT endpoint designs |
| Wide temperature operation | –40°C to +125°C ambient rating - supports deployment in engine control units, base station radios, and industrial drives |
Applications
| Motor Control Interface | Industrial Data Acquisition |
|---|---|
Use Scenario: Isolating microcontroller GPIO pins from high-noise motor driver feedback lines in BLDC inverters. IC Role / Device Role / Timing Role: 3-state buffer isolates MCU from voltage transients; enables safe readback of hall sensor or current sense signals during PWM switching. Use Value: Prevents MCU latch-up from 5V feedback spikes while operating at 3.3V core voltage - no external clamping or level shifters required. |
Use Scenario: Routing analog-to-digital converter (ADC) serial data to multiple processing paths in programmable logic controllers. IC Role / Device Role / Timing Role: Bus buffer enables time-multiplexed access to shared ADC output by FPGA and ARM subsystems. Use Value: Eliminates bus contention using OE-controlled tri-state; 3.7ns delay preserves timing margins in 50MHz SPI streams. |
| Video Infrastructure Backplane | SSD Power Management Interface |
Use Scenario: Managing hot-swappable video processing modules in broadcast-grade IP transcoding chassis. IC Role / Device Role / Timing Role: Signal isolator on module presence detection and configuration bus lines. Use Value: Ioff prevents back-driving of powered backplane when module is inserted/removed - meets IEC 61000-4-2 Level 4 ESD robustness. |
Use Scenario: Enabling/disabling NVMe SSD power rails and status reporting lines in enterprise storage enclosures. IC Role / Device Role / Timing Role: Logic-level translator and enable gate between BMC and SSD's 1.2V/3.3V I²C and GPIO interfaces. Use Value: Over-voltage tolerance allows 3.3V BMC to safely monitor 1.2V SSD signals; 10μA ICC minimizes standby current in sleep states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G125DBVR | SOT-23-5 (DBV) package: 2.9mm × 2.8mm body - 9× larger footprint than DRL | Preferred where manual assembly, test probing, or thermal dissipation >350°C/W is required | Select DBVR only if board layout cannot accommodate 0.8mm pitch or requires higher thermal mass |
| 74LVC1G125GW,125 | Nexperia SOT-353 (SC-88A) package: 2.1mm × 1.25mm body - 3.3× larger than DRL, same pinout | Used in legacy designs with established SC-88A land patterns and JEDEC-compliant reflow profiles | Choose GW version only for second-source continuity in existing SOT-353-based production lines |
Compared with SN74LVC1G125DBVR and 74LVC1G125GW,125, the 74LVC1G125DRLRG4 delivers identical logic function and electrical specs but achieves 85% smaller PCB area - critical for space-constrained edge AI accelerators and miniaturized test equipment where interconnect density dominates layout constraints.
Availability
74LVC1G125DRLRG4 is available at Aetrix Electronics and suitable for industrial motor control, video infrastructure backplanes, SSD power management, and high-reliability data acquisition requiring stable component supply across extended temperature and long product lifecycles.
Supply support for 74LVC1G125DRLRG4 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 delivering analog and embedded processing solutions, with over 90 years of innovation in precision logic, power management, and signal chain technologies.
The SN74LVC1G125 series belongs to TI's LVC (Low-Voltage CMOS) logic family, designed specifically for low-power, high-speed, mixed-voltage interfacing in space- and energy-constrained industrial, automotive, and communications systems.
FAQ
What is the recommended pull-up resistor value for OE on the 74LVC1G125DRLRG4?
A 10kΩ pull-up resistor from OE to VCC is recommended to ensure reliable high-impedance state during power-up and power-down sequences. This value balances current consumption (<0.33mA at 3.3V), noise immunity, and response time while remaining compatible with the device's maximum sink current specification of 24mA. The 74LVC1G125DRLRG4 datasheet confirms this value supports proper initialization across –40°C to 125°C.
Can the 74LVC1G125DRLRG4 interface a 5V microcontroller with a 1.8V FPGA?
Yes - the 74LVC1G125DRLRG4 accepts 5V inputs while operating at 1.8V VCC due to its over-voltage tolerant inputs (rated to 5.5V), and its output swings from 0V to 1.8V, matching the FPGA's input thresholds. No level shifter is needed. The 74LVC1G125DRLRG4 maintains full 3.7ns propagation delay performance under these conditions per TI's switching characteristics tables.
Does the 74LVC1G125DRLRG4 support hot-swap applications?
Yes - the 74LVC1G125DRLRG4 includes Ioff circuitry that disables all outputs when VCC = 0V, preventing current backflow from live system buses into unpowered modules. This feature is explicitly validated per JESD78 Class II latch-up testing and enables safe insertion/removal in powered backplanes. The 74LVC1G125DRLRG4 datasheet specifies ±10μA max Ioff leakage at 5.5V.
What is the maximum capacitive load the 74LVC1G125DRLRG4 can drive while maintaining timing specs?
The 74LVC1G125DRLRG4 is characterized for CL ≤ 15pF in propagation delay tests and CL ≤ 50pF in functional operation per TI's application guidance. Driving >50pF may increase tpd beyond 3.7ns and cause overshoot; TI recommends adding a 10–33Ω series resistor near the output for loads exceeding 50pF. The 74LVC1G125DRLRG4's 24mA drive strength supports such termination without violating absolute maximum ratings.
Is the 74LVC1G125DRLRG4 pin-compatible with other SN74LVC1G125 variants?
Yes - all SN74LVC1G125 variants (including DBV, DCK, DRY, DPW, YZP, and DRL packages) share identical pin numbering and function mapping: Pin 1 = OE, Pin 2 = A, Pin 3 = GND, Pin 4 = Y, Pin 5 = VCC. The 74LVC1G125DRLRG4 is a direct drop-in replacement in terms of logic function and pinout; only PCB footprint and thermal metrics differ between packages.
74LVC1G125DRLRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- SOT-553
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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-5
74LVC1G125DRLRG4 FAQ
1.How can I place an order for 74LVC1G125DRLRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC1G125DRLRG4 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 74LVC1G125DRLRG4 reliable?
The price and inventory of 74LVC1G125DRLRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC1G125DRLRG4 is usually 5 days.
3.What payment methods are accepted for 74LVC1G125DRLRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC1G125DRLRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC1G125DRLRG4?
74LVC1G125DRLRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC1G125DRLRG4 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 74LVC1G125DRLRG4?
For technical support, including 74LVC1G125DRLRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC1G125DRLRG4 requirements.
6.How does Aetrix verify that 74LVC1G125DRLRG4 is sourced from the original manufacturer or authorized distributors?
All 74LVC1G125DRLRG4 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 74LVC1G125DRLRG4 meets industry standards.
7.What is the process for return or replacement of 74LVC1G125DRLRG4?
All 74LVC1G125DRLRG4 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC1G125DRLRG4, 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 74LVC1G125DRLRG4 part is unused and in its original packaging.
Return procedure for 74LVC1G125DRLRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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