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Texas Instruments SN74AUP1G125DCKR
- Part No.:
- SN74AUP1G125DCKR
- Manufacturer:
- Texas Instruments
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
SN74AUP1G125DCKR.pdf
- Description:
- IC BUF NON-INVERT 3.6V SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,280
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Product details
Overview
SN74AUP1G125 from Texas Instruments is a single low-power bus buffer gate with 3-state output, designed for signal isolation and level translation in portable electronics. It operates across 0.8 V to 3.6 V, delivers ≤4.6 ns propagation delay at 3.3 V, supports Ioff partial-power-down mode, and features 3.6-V I/O tolerance - enabling use in mixed-voltage SSD, tablet, and wireless peripheral interfaces.
For engineers reviewing the SN74AUP1G125 datasheet, SN74AUP1G125 pinout, SN74AUP1G125 application, or SN74AUP1G125 equivalent, key selection criteria include its ultra-low ICC (0.9 µA max), 1.5 pF input capacitance, 3-state enable timing (tdis/ten ≤5.9 ns at 3.3 V), and SC70-5 package compatibility with space-constrained PCB layouts.
Technical Context
The SN74AUP1G125 implements a noninverting buffer (Y = A) with active-low output-enable (OE) control. Its balanced CMOS push-pull output drives ±4 mA at 3 V while maintaining rail-to-rail VOH/VOL compliance across the full 0.8–3.6 V supply range.
It integrates Ioff circuitry that disables all I/Os during power-down, limiting leakage to ≤0.6 µA at 0 V supply, and includes input hysteresis for noise immunity on slow transitions - critical for reliable operation in battery-powered audio docks and wireless headsets.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 0.8 V to 3.6 V - enables direct interface with 1.2 V, 1.8 V, 2.5 V, and 3.3 V logic domains without level shifters |
| tpd Max | 4.6 ns at 3.3 V - supports signal integrity in high-speed data paths up to ~100 MHz |
| ICC Max | 0.9 µA at TA = –40°C to +85°C - extends battery life in always-on portable PDA and tablet subsystems |
| CI Typ | 1.5 pF - minimizes capacitive loading on driving source, preserving edge rate in dense routing |
| Ioff Max | 0.6 µA at 0 V - prevents back-current damage when interfacing with powered-down system blocks |
| IOH/IOL | ±4 mA at 3 V - sufficient to drive LEDs directly or fan out to multiple CMOS inputs |
| VIO Tolerance | 3.6 V - allows safe 5-V-tolerant input signaling even when VCC = 1.8 V |
Pinout & Package
SN74AUP1G125DCKR uses the SC70-5 (DCK) package: 2.00 mm × 1.25 mm, 0.65 mm pitch, 5-pin surface-mount package optimized for compact portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Active-low output enable | Drives Y to high-impedance when high; must be pulled up to VCC during power sequencing to avoid bus contention |
| 2 (A) | Noninverting data input | Accepts 0.8–3.6 V logic; hysteresis improves noise margin on slow or floating signals |
| 3 (GND) | Ground reference | Return path for all internal currents; requires low-inductance connection to minimize switching noise |
| 4 (Y) | 3-state buffered output | Delivers rail-to-rail swing; capable of sourcing/sinking ±4 mA at 3 V |
| 5 (VCC) | Positive supply | Power domain for logic and output stages; decoupling capacitor required within 2 mm |
Key Features
| Feature | Design Value |
|---|---|
| Low dynamic power | Cpd = 4 pF typical at 3.3 V - reduces switching current and EMI in high-frequency clock/data lines |
| Input-disable capability | Allows A to float without undefined state - eliminates need for external pull resistors in standby modes |
| Over-voltage tolerant inputs | Withstands 3.6 V input when VCC = 1.2 V - enables seamless voltage translation in multi-rail systems |
| Low noise overshoot/undershoot | <10% of VCC - ensures clean signal edges without external termination in short traces |
| Partial-power-down support | Ioff limits leakage to ≤0.6 µA - protects powered-down sections from backfeeding in modular SSD or dock architectures |
Applications
| SSD Data Path Isolation | Wireless Peripheral Interface |
|---|---|
Use Scenario: Isolating NAND flash command/address lines from host controller during sleep mode in client SSDs. IC Role / Device Role / Timing Role: 3-state buffer controlled by host-side OE signal to gate data flow and reduce standby leakage. Use Value: Enables deep-sleep current reduction below 1 µA per channel while maintaining fast wake-up (<5 ns enable time). | Use Scenario: Level-shifting and buffering I²C or GPIO signals between 3.3 V MCU and 1.8 V Bluetooth SoC in wireless mice/keyboards. IC Role / Device Role / Timing Role: Noninverting buffer with 3.6-V-tolerant inputs accepting 3.3 V signals while operating at 1.8 V VCC. Use Value: Eliminates discrete level translators; 1.5 pF input capacitance preserves rise/fall times on 400 kHz I²C bus. |
| Tablet Display Subsystem | Audio Dock Signal Routing |
Use Scenario: Driving backlight control or touch controller reset lines in enterprise tablets with mixed 1.2 V/1.8 V/3.3 V power domains. IC Role / Device Role / Timing Role: Single-line buffer enabling precise timing-critical resets with sub-5 ns propagation delay. Use Value: Guarantees setup/hold margins for 100+ MHz display interfaces; SC70-5 footprint saves board area vs. SOT-23. | Use Scenario: Isolating USB audio codec control lines from host processor in portable audio docks. IC Role / Device Role / Timing Role: Output-enabled buffer preventing signal contention during hot-plug events or firmware updates. Use Value: Ioff protection prevents back-current into unpowered codec ICs; 0.9 µA ICC extends dock battery runtime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G125DCKR | Higher ICC (10 µA typ), narrower VCC range (1.65–5.5 V), no Ioff support | Lacks partial-power-down capability; unsuitable for systems requiring zero-backfeed during sleep | Choose only if operating exclusively above 1.65 V and Ioff is not required |
| NC7SZ125P5X | Lower drive (±2.6 mA), higher Cpd (5 pF), no 3.6-V I/O tolerance | Not suitable for 3.3 V → 1.8 V translation; limited noise immunity due to missing hysteresis | Select when cost is primary constraint and mixed-voltage operation is absent |
Compared with SN74LVC1G125DCKR and NC7SZ125P5X, SN74AUP1G125DCKR uniquely combines ultra-low ICC, wide VCC scalability (0.8–3.6 V), Ioff, and 3.6-V I/O tolerance - making it the only choice for battery-sensitive, multi-rail portable designs requiring guaranteed high-impedance isolation.
Availability
SN74AUP1G125DCKR is available at Aetrix Electronics and suitable for SSD, tablet, wireless peripheral, and audio dock applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature.
Supply support for SN74AUP1G125DCKR 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 low-power logic, precision analog, and power management ICs.
The AUP family, including SN74AUP1G125DCKR, was engineered specifically for ultra-low-power portable electronics - optimizing static/dynamic power, signal integrity, and mixed-voltage interoperability in space- and battery-constrained devices.
FAQ
What is the maximum recommended load capacitance for stable operation of SN74AUP1G125DCKR?
SN74AUP1G125DCKR is characterized up to 30 pF load capacitance, with tpd increasing predictably (e.g., 4.6 ns at 3.3 V/5 pF → 6.0 ns at 3.3 V/30 pF). For optimal signal integrity in high-speed paths, TI recommends keeping CL ≤15 pF; beyond that, verify edge rates and ringing in actual layout using the device's 4 pF Cpd and 1.5 pF CI values.
Does SN74AUP1G125DCKR support true bidirectional data flow?
No, SN74AUP1G125DCKR is a unidirectional noninverting buffer (Y = A) with 3-state output control. It does not support automatic direction sensing or bus transceiver functionality. For bidirectional applications, a dedicated transceiver like SN74AUP2G241 must be used instead of SN74AUP1G125DCKR.
How should the OE pin be handled during power-up to ensure high-impedance state for SN74AUP1G125DCKR?
To guarantee high-impedance output during power-up/down, OE must be tied to VCC via an external pullup resistor. TI specifies minimum resistance based on driver sink capability - typically 10 kΩ suffices for most applications. Leaving OE floating risks undefined output states and potential bus contention, which SN74AUP1G125DCKR cannot prevent autonomously.
Can SN74AUP1G125DCKR drive an LED directly without a series resistor?
No - although SN74AUP1G125DCKR can source/sink ±4 mA at 3 V, direct LED connection violates absolute maximum ratings and risks thermal damage. A current-limiting resistor is mandatory. For example, driving a 2 V LED at 3.3 V requires ≥325 Ω to limit current to 4 mA; SN74AUP1G125DCKR provides the drive strength but not current regulation.
Is SN74AUP1G125DCKR compatible with 5 V logic inputs?
No - SN74AUP1G125DCKR has absolute maximum input voltage of 4.6 V and 3.6-V I/O tolerance. Applying 5 V to any pin exceeds rating and may cause permanent damage. It safely accepts 3.3 V signals when VCC = 1.8 V, but 5 V inputs require external clamping or a 5-V-tolerant alternative like SN74LVC1G125.
SN74AUP1G125DCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AUP
- 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:
- 4mA, 4mA
- Voltage - Supply:
- 0.8V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
SN74AUP1G125DCKR FAQ
1.How can I place an order for SN74AUP1G125DCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AUP1G125DCKR 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 SN74AUP1G125DCKR reliable?
The price and inventory of SN74AUP1G125DCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AUP1G125DCKR is usually 5 days.
3.What payment methods are accepted for SN74AUP1G125DCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AUP1G125DCKR transactions.
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4.How is shipping managed for SN74AUP1G125DCKR?
SN74AUP1G125DCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AUP1G125DCKR 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 SN74AUP1G125DCKR?
For technical support, including SN74AUP1G125DCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AUP1G125DCKR requirements.
6.How does Aetrix verify that SN74AUP1G125DCKR is sourced from the original manufacturer or authorized distributors?
All SN74AUP1G125DCKR 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 SN74AUP1G125DCKR meets industry standards.
7.What is the process for return or replacement of SN74AUP1G125DCKR?
All SN74AUP1G125DCKR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AUP1G125DCKR, 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 SN74AUP1G125DCKR part is unused and in its original packaging.
Return procedure for SN74AUP1G125DCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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