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Texas Instruments SN74LVC1G125DRYR
- Part No.:
- SN74LVC1G125DRYR
- Manufacturer:
- Texas Instruments
- Package:
- 6-UFDFN
- Datasheet:
-
SN74LVC1G125DRYR.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 6SON
- Quantity:
- Payment:
- Shipping:
Inventory:12,719
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Product details
Overview
SN74LVC1G125 from Texas Instruments is a single 3-state bus buffer gate used for signal isolation and bus contention 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 control timing (ten/tdis), Ioff-enabled live insertion support, thermal performance in SON-6 package, and voltage translation capability across 1.65V–5.5V VCC.
Technical Context
The SN74LVC1G125 implements a non-inverting buffer with active-low 3-state enable (OE), where Y = A when OE = L and Y = high-impedance when OE = H. Its CMOS input structure accepts TTL-compatible thresholds and supports down-translation - inputs tolerate 5.5V regardless of VCC (1.65V–5.5V).
It integrates partial-power-down (Ioff) protection that disables all outputs at 0V VCC, preventing back-drive current and enabling hot-swap capability. The balanced CMOS output stage delivers symmetrical sourcing/sinking drive and operates with CL ≤ 50pF while meeting full switching specs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 5.5V - enables interoperability across 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 bus interfaces |
| Ioff Leakage | ±10μA max at 5.5V - guarantees safe live insertion and back-drive protection during partial power-down |
| Output Drive | ±24mA at 3.3V - supports driving moderate capacitive loads without external buffering |
| Input Voltage Tolerance | Up to 5.5V independent of VCC - allows direct interfacing with 5V signals into lower-VCC systems |
| ICC (max) | 10μA - enables ultra-low static power in battery-backed or always-on subsystems |
| Operating Temp | –40°C to +125°C - qualified for industrial and automotive under-hood environments |
Pinout & Package
SN74LVC1G125DRYR uses a 6-pin SON (Small Outline No-Lead) package measuring 1.45mm × 1.0mm with wettable flank terminations. The package is moisture-sensitive level 1 (MSL-1) and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A | Data Input | True logic input; drives Y when OE is asserted low |
| OE | Active-Low Enable | Controls 3-state output: low = enabled, high = high-Z |
| Y | Buffered Output | Non-inverted output; high-impedance when OE = high |
| VCC | Power Supply | Single supply rail (1.65–5.5V); powers internal logic and output stage |
| GND | Ground Reference | Return path for all currents; must be low-impedance for noise immunity |
| N.C. | No Internal Connection | Unbonded pad; no electrical function - may be left floating or grounded per layout needs |
Key Features
| Feature | Design Value |
|---|---|
| Over-voltage tolerant inputs | Accepts 0–5.5V on A/OE regardless of VCC - eliminates level-shifter need for 5V-to-3.3V signal routing |
| Ioff partial power-down | Blocks current flow between powered/unpowered sections - enables hot-plug operation in modular systems |
| Ultra-small DRY (SON-6) footprint | 1.45mm × 1.0mm body - saves >60% board area vs. SOT-23-5, ideal for space-constrained SSD and portable video modules |
| Low-impedance 3-state outputs | ±24mA drive at 3.3V with matched rise/fall - reduces signal distortion on shared buses with multiple drivers |
| ESD robustness | 2000V HBM, 1000V CDM - meets industrial handling requirements without additional protection circuitry |
Applications
| SSD Internal Bus Isolation | Video Broadcasting Transcoder |
|---|---|
Use Scenario: Isolating NAND flash interface lines from host controller during firmware updates to prevent bus contention. IC Role / Device Role / Timing Role: Single-directional 3-state buffer controlling data path between controller and memory die. Use Value: Prevents signal corruption during reconfiguration using fast 3.7ns tpd and Ioff-enabled safe power sequencing. | Use Scenario: Level-shifting and isolating parallel video data lanes (e.g., BT.656) between 3.3V FPGA logic and 5V analog encoder ICs. IC Role / Device Role / Timing Role: Voltage-translating bus buffer enabling bidirectional signal integrity across mixed-supply subsystems. Use Value: Eliminates external level shifters via 5.5V-tolerant inputs and 3.3V/5V VCC flexibility - reduces BOM count and layout complexity. |
| Military Radar Signal Conditioning | Motor Control Interface |
Use Scenario: Buffering serial command lines (e.g., SPI clock/data) between radiation-hardened MCU and RF front-end modules operating at extended temperature. IC Role / Device Role / Timing Role: Low-power, high-reliability signal repeater ensuring clean edge delivery in EMI-prone radar cabinets. Use Value: Delivers 125°C-rated operation with <10μA ICC and 2000V HBM - sustains functionality in harsh deployed environments. | Use Scenario: Enabling/disabling PWM feedback signals from isolated current sensors to main controller during fault conditions. IC Role / Device Role / Timing Role: Fast-enable 3-state gate synchronizing sensor readout with motor phase switching events. Use Value: Achieves sub-5ns enable/disable timing (ten/tdis) to align with microsecond-scale motor commutation cycles. |
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 package (2.9mm × 2.8mm); higher RθJA (357°C/W) than DRYR (439°C/W) | Less suitable for thermally dense layouts; requires larger PCB real estate | Choose for legacy board compatibility or manual assembly preference |
| 74LVC1G125GW,125 | NXP SC-70-5 package; identical logic but different thermal metrics and qualification scope | Not qualified to same automotive temp grade; lacks TI's 125°C characterization | Use only in commercial-temp consumer designs where cost is primary driver |
Compared with SN74LVC1G125DBVR and 74LVC1G125GW,125, the SN74LVC1G125DRYR offers the smallest footprint and highest thermal resistance - advantageous for miniaturized industrial modules requiring MSL-1 reliability and space-constrained thermal management.
Availability
SN74LVC1G125DRYR is available at Aetrix Electronics and suitable for SSD internal bus isolation, video broadcasting transcoders, military radar signal conditioning, and motor control interface applications requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance.
Supply support for SN74LVC1G125DRYR 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 over 50 years of innovation in high-reliability digital interface components.
The SN74LVC1G125 belongs to TI's LVC (Low-Voltage CMOS) logic family, designed specifically for low-power, mixed-voltage system interfacing in space-constrained industrial, communications, and computing applications.
FAQ
What is the maximum input voltage the SN74LVC1G125DRYR can tolerate?
The SN74LVC1G125DRYR accepts input voltages up to 5.5V on both A and OE pins - independent of VCC level - enabling direct connection to 5V signals even when powered from 1.8V or 2.5V. This over-voltage tolerance eliminates external level-shifting circuitry in mixed-supply systems and is confirmed in Section 5.1 Absolute Maximum Ratings and Section 7.3.5 of the datasheet.
Does the SN74LVC1G125DRYR support hot-swap or live insertion?
Yes, the SN74LVC1G125DRYR supports live insertion via its Ioff feature: when VCC = 0V, all outputs enter high-impedance state with leakage limited to ±10μA (Section 5.5 Electrical Characteristics). This prevents back-driving powered circuitry during board replacement - a requirement verified in JESD78 Class II latch-up testing and explicitly cited in Feature List item #8.
What is the recommended pull-up resistor value for OE on the SN74LVC1G125DRYR?
TI recommends tying OE to VCC through a pull-up resistor to ensure high-impedance state at power-up. The minimum value depends on the driver's sink capability; for typical use, a 10kΩ resistor is sufficient (Section 7.1 Overview and Section 7.3.3). This value balances fast enable timing, low quiescent current, and noise immunity - validated in Application Note "Implications of Slow or Floating CMOS Inputs".
Can the SN74LVC1G125DRYR drive a 50pF load while maintaining full timing specs?
Yes - the SN74LVC1G125DRYR is fully characterized for CL = 30pF and CL = 50pF loads across –40°C to 125°C (Sections 5.7 and 5.8). At 3.3V VCC, tpd remains ≤4.7ns and ten/tdis ≤5.6ns/5.2ns respectively. Driving >50pF is possible but may require series damping resistors to maintain signal integrity, as noted in Section 8.2.1.1.
Is the SN74LVC1G125DRYR pin-compatible with other packages in the same family?
No - the SN74LVC1G125DRYR (SON-6) has a different pin count and layout than DBV (SOT-23-5), DCK (SC-70-5), or DPW (X2SON-5) variants. While logic function and electrical specs are identical, the 6-pin DRYR requires unique PCB footprint and routing. Pin mapping differences (e.g., N.C. on pin 2) preclude direct substitution without layout revision - confirmed in Section 4 Pin Configuration and Functions.
SN74LVC1G125DRYR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 6-UFDFN
- 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:
- 6-SON (1.45x1)
SN74LVC1G125DRYR FAQ
1.How can I place an order for SN74LVC1G125DRYR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC1G125DRYR 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 SN74LVC1G125DRYR reliable?
The price and inventory of SN74LVC1G125DRYR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC1G125DRYR is usually 5 days.
3.What payment methods are accepted for SN74LVC1G125DRYR?
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4.How is shipping managed for SN74LVC1G125DRYR?
SN74LVC1G125DRYR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC1G125DRYR 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 SN74LVC1G125DRYR?
For technical support, including SN74LVC1G125DRYR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC1G125DRYR requirements.
6.How does Aetrix verify that SN74LVC1G125DRYR is sourced from the original manufacturer or authorized distributors?
All SN74LVC1G125DRYR 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 SN74LVC1G125DRYR meets industry standards.
7.What is the process for return or replacement of SN74LVC1G125DRYR?
All SN74LVC1G125DRYR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC1G125DRYR, 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 SN74LVC1G125DRYR part is unused and in its original packaging.
Return procedure for SN74LVC1G125DRYR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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