My Inquiry
My Account
Texas Instruments SN74LVC125APWRG3
- Part No.:
- SN74LVC125APWRG3
- Manufacturer:
- Texas Instruments
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74LVC125APWRG3.pdf
- Description:
- IC BUF NON-INVERT 3.6V 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,988
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74LVC125APWRG3 from Texas Instruments is a quadruple 3-state bus buffer gate designed for level translation and bus isolation in mixed-voltage systems. It operates from 1.65V to 3.6V, accepts 5.5V-tolerant inputs, delivers ≤4.8ns propagation delay at 3.3V, and supports industrial temperature range (–40°C to 125°C). It is used in telecom baseband units and optical networking interfaces where voltage-level bridging and low-power tri-state control are required.
For engineers reviewing the SN74LVC125APWRG3 datasheet, SN74LVC125APWRG3 pinout, SN74LVC125APWRG3 application, or SN74LVC125APWRG3 equivalent, key selection criteria include 5.5V input tolerance, 3.6V max VCC, 14-pin TSSOP package compatibility, and guaranteed 3-state behavior during power sequencing with OE pull-up design guidance.
Technical Context
The SN74LVC125APWRG3 implements four independent noninverting buffers, each with dedicated output-enable (OE) control. Each buffer passes A→Y when OE is low and enters high-impedance state when OE is high - enabling dynamic bus sharing without contention.
Its CMOS design supports bidirectional voltage translation: 3.3V logic can drive its inputs while interfacing with 5V systems via overvoltage-tolerant inputs, and its outputs swing rail-to-rail within VCC (1.65V–3.6V), making it suitable for mixed-supply backplane and interface applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 3.6V - enables operation across LVC-family supply rails including 1.8V, 2.5V, and 3.3V systems. |
| Input Voltage Tolerance | Up to 5.5V - allows direct connection to legacy 5V logic without level shifters. |
| Max Propagation Delay | 4.8ns at 3.3V - ensures timing compliance in high-speed digital interfaces up to ~100MHz data rates. |
| Operating Temperature | –40°C to 125°C - qualified for extended industrial and telecom infrastructure environments. |
| Output Drive Strength | ±24mA at 3.0V - sufficient to drive moderate capacitive loads (e.g., 10–15pF) with clean edges. |
| Power Dissipation | 500mW max (TA ≤ 125°C) - compatible with standard PCB thermal relief in TSSOP-14 packages. |
| ESD Rating | ±2000V HBM - meets JEDEC JS-001 requirements for robust handling in manufacturing and field deployment. |
Pinout & Package
TSSOP-14 (PW) package: 5.00mm × 6.4mm body, 0.65mm pitch, exposed pad not present. RoHS-compliant, SN lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Input (active-low) | Independent enable controls per buffer; tie to VCC via pull-up resistor to ensure high-Z at power-up/down. |
| 1A–4A | Input | Buffer data inputs; 5.5V-tolerant, compatible with 3.3V/5V sources. |
| 1Y–4Y | Output (3-state) | Noninverting buffered outputs; high-impedance when corresponding OE = high. |
| VCC | Power | Single supply pin (pins 14); requires local 0.1µF bypass capacitor. |
| GND | Ground | Reference return (pin 7); must be low-inductance connection to minimize ground bounce. |
Key Features
| Feature | Design Value |
|---|---|
| Independent 3-state control | Four separate OE inputs allow selective bus segment isolation without affecting other channels. |
| 5.5V-tolerant inputs | Enables seamless interfacing between 3.3V logic domains and legacy 5V peripherals or FPGAs. |
| Low propagation delay | 4.8ns max at 3.3V supports timing-critical paths in telecom PHY layers and FPGA I/O expansion. |
| Wide temperature support | –40°C to 125°C operation ensures reliability in outdoor telecom shelters and base station enclosures. |
| High noise immunity | Typical VOHV >2V and VOLP <0.8V at 3.3V reduce susceptibility to ground bounce and crosstalk. |
Applications
| Telecom Baseband Units | Optical Networking Interfaces |
|---|---|
Use Scenario: Signal routing between FPGA I/O banks and multi-rate SERDES transceivers in CPRI/eCPRI baseband processing modules. IC Role / Device Role / Timing Role: Bus buffer and voltage translator isolating 3.3V FPGA GPIO from 2.5V/1.8V transceiver control lines. Use Value: Prevents bus contention during hot-swap reconfiguration and enables safe 5V-tolerant control of reset/enable signals. |
Use Scenario: Interfacing between host processor and EPON OLT line cards requiring level-shifted management bus signals. IC Role / Device Role / Timing Role: Bidirectional signal conditioner on I²C/SPI control buses connecting 3.3V MCU to 5V analog front-end ICs. Use Value: Eliminates need for discrete level translators while maintaining sub-5ns timing margins for register access. |
| Wireless Remote Radio Units | Industrial Power Monitoring Units |
Use Scenario: Isolating FPGA configuration bus from RF front-end ASICs in RRU designs operating in harsh thermal environments. IC Role / Device Role / Timing Role: Tri-state buffer enabling shared JTAG or SPI programming bus among multiple RFICs. Use Value: Ensures deterministic high-Z state during power ramp-up, preventing latch-up in sensitive RF sections. |
Use Scenario: Buffering sensor interface signals (e.g., ADC control, temperature monitor alerts) in telecom PDUs with mixed 3.3V/5V subsystems. IC Role / Device Role / Timing Role: Voltage-translating repeater for interrupt and status lines between isolated monitoring MCU and legacy power controllers. Use Value: Maintains signal integrity across noisy 48V DC distribution zones while supporting fail-safe shutdown signaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC125APWR | Same silicon, NIPDAU lead finish instead of SN; identical electrical specs and timing. | No functional difference; differs only in RoHS-compliant surface finish and MSL handling profile. | Select SN74LVC125APWRG3 when SN finish is specified for solderability or legacy process compatibility. |
| 74LVC125AD,118 (Nexperia) | Pin-compatible SOIC-14 variant; same VCC range and 5.5V input tolerance, but 6.5ns tpd at 3.3V (vs. 4.8ns). | Suitable for less timing-critical board-level interconnects where TSSOP footprint is not required. | Choose 74LVC125AD,118 for cost-sensitive, space-tolerant designs where 1.7ns timing margin is acceptable. |
Compared with SN74LVC125APWR and 74LVC125AD,118, the SN74LVC125APWRG3 offers optimized solder joint reliability via SN finish and the fastest propagation delay in the family - critical for high-density telecom PCBs where trace length and timing closure constrain layout.
Availability
SN74LVC125APWRG3 is available at Aetrix Electronics and suitable for telecom baseband units, optical networking interfaces, and wireless remote radio units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74LVC125APWRG3 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 connectivity solutions, with decades of experience in high-reliability industrial and communications ICs.
The SN74LVC125A belongs to TI's LVC logic family, engineered for low-voltage operation, mixed-signal interoperability, and robust performance in telecom infrastructure, networking equipment, and industrial control systems.
FAQ
What is the maximum input voltage rating for SN74LVC125APWRG3?
The SN74LVC125APWRG3 supports input voltages up to 5.5V regardless of VCC level - a key feature enabling direct interfacing with 5V logic families without external level shifters. This overvoltage tolerance is explicitly specified in Section 5.1 Absolute Maximum Ratings and confirmed across all operating conditions in the Recommended Operating Conditions table.
Does SN74LVC125APWRG3 require external pull-up resistors on OE pins?
Yes - to guarantee high-impedance output state during power-up or power-down, each OE pin of the SN74LVC125APWRG3 must be tied to VCC through an external pull-up resistor. The minimum resistance value depends on the current-sourcing capability of the driving source, as detailed in Section 3 Description and Figure 8-4 layout example.
What is the typical power dissipation of SN74LVC125APWRG3 at 3.3V?
At 3.3V and 25°C, the SN74LVC125APWRG3 exhibits typical quiescent current (ICC) of 1μA and dynamic power dissipation capacitance (Cpd) of 15pF per gate. With 10MHz toggle frequency, total active power remains well below 1mW - consistent with low-power design goals for telecom edge equipment.
Can SN74LVC125APWRG3 be used in a 1.8V system?
Yes - the SN74LVC125APWRG3 is fully specified down to 1.65V VCC, making it compatible with 1.8V systems. Its VIH/VIL thresholds scale with VCC, and switching characteristics (e.g., 11.8ns tpd at 1.8V) are guaranteed across the full operating range, including –40°C to 125°C.
Is SN74LVC125APWRG3 pin-compatible with other LVC125 variants?
Yes - SN74LVC125APWRG3 uses the standard TSSOP-14 (PW) footprint defined in TI's mechanical drawings, matching pinout and spacing of all SN74LVC125A variants in PW packaging (e.g., SN74LVC125APWR, SN74LVC125APWRE4). Mechanical compatibility is verified in Package Option Addendum and Section 11 documentation.
SN74LVC125APWRG3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 4
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 24mA, 24mA
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
SN74LVC125APWRG3 FAQ
1.How can I place an order for SN74LVC125APWRG3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC125APWRG3 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 SN74LVC125APWRG3 reliable?
The price and inventory of SN74LVC125APWRG3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC125APWRG3 is usually 5 days.
3.What payment methods are accepted for SN74LVC125APWRG3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC125APWRG3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC125APWRG3?
SN74LVC125APWRG3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC125APWRG3 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 SN74LVC125APWRG3?
For technical support, including SN74LVC125APWRG3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC125APWRG3 requirements.
6.How does Aetrix verify that SN74LVC125APWRG3 is sourced from the original manufacturer or authorized distributors?
All SN74LVC125APWRG3 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 SN74LVC125APWRG3 meets industry standards.
7.What is the process for return or replacement of SN74LVC125APWRG3?
All SN74LVC125APWRG3 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC125APWRG3, 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 SN74LVC125APWRG3 part is unused and in its original packaging.
Return procedure for SN74LVC125APWRG3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74LVC125APWRG3 Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
