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Texas Instruments SN74LVC1G126YZPR
- Part No.:
- SN74LVC1G126YZPR
- Manufacturer:
- Texas Instruments
- Package:
- 5-XFBGA, DSBGA
- Datasheet:
-
SN74LVC1G126YZPR.pdf
- Description:
- IC BUF NON-INVERT 5.5V 5DSBGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SN74LVC1G126YZPR from Texas Instruments is a single-channel 3-state bus buffer gate designed for level-translating signal routing in space-constrained digital systems. It features true non-inverting logic, ±24mA output drive at 3.3V, 3.7ns maximum propagation delay (tpd), and over-voltage tolerant inputs up to 5.5V - enabling interoperability between 1.8V/2.5V/3.3V/5V logic domains in industrial I/O expansion and FPGA interface applications.
For engineers reviewing the SN74LVC1G126YZPR datasheet, SN74LVC1G126YZPR pinout, SN74LVC1G126YZPR application, or SN74LVC1G126YZPR equivalent, key selection criteria include its DSBGA-5 (YZP) package footprint (1.39mm × 0.89mm), Ioff-enabled live insertion capability, rail-to-rail input tolerance, and guaranteed 3-state leakage ≤10μA across –40°C to 125°C.
Technical Context
The SN74LVC1G126YZPR implements a CMOS-based non-inverting buffer with active-high output-enable control (OE), where Y = A when OE = HIGH and Y = high-impedance when OE = LOW. Its balanced push-pull output stage supports symmetrical sourcing/sinking (±24mA at VCC = 3V), and internal clamp diodes protect against negative transients without requiring external components.
It operates across 1.65V–5.5V supply range with input voltage tolerance up to 5.5V independent of VCC - enabling down-translation (e.g., 5V input → 3.3V output). The device integrates partial-power-down (Ioff) functionality, ensuring <10μA off-state current when VCC = 0V, critical for hot-swap and backplane applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 5.5V - supports mixed-voltage system interfacing without level shifters |
| Max tpd | 3.7ns at VCC = 3.3V, CL = 15pF - enables >200MHz data rates in short-trace routing |
| Output Drive | ±24mA at VCC = 3V - sufficient to drive 50Ω transmission lines or multiple CMOS loads |
| Ioff Current | ±10μA max at VCC = 0V - prevents back-drive and enables safe live insertion into powered backplanes |
| Input Voltage Range | –0.5V to 5.5V - accepts 5V TTL signals even when VCC = 1.8V, enabling legacy compatibility |
| Operating Temp | –40°C to +125°C - qualified for automotive under-hood and industrial motor-control environments |
| ICC (max) | 10μA - ultra-low static power ideal for battery-backed or always-on monitoring circuits |
Pinout & Package
SN74LVC1G126YZPR uses the Texas Instruments DSBGA-5 (YZP) package: 1.39mm × 0.89mm body size, 0.4mm pitch, bottom-side ball layout. This NanoFree™ package eliminates leads, reduces parasitic inductance, and enables direct die attachment on PCBs for minimal trace length and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A | Data Input | True logic input; accepts voltages up to 5.5V regardless of VCC value |
| OE | Output Enable (active-high) | Drives Y to high-impedance when LOW; must be tied to GND during power-up/down to maintain Z-state |
| Y | 3-State Output | Non-inverting buffered output; sinks/sources up to ±24mA; high-Z leakage ≤10μA |
| GND | Ground Reference | Return path for all currents; required for Ioff functionality and ESD protection integrity |
| VCC | Supply Voltage | Core logic supply (1.65–5.5V); determines VOH/VOL thresholds and output drive strength |
Key Features
| Feature | Design Value |
|---|---|
| NanoFree™ DSBGA-5 packaging | 1.39mm × 0.89mm footprint with 0.4mm pitch - reduces board area by >60% vs. SOT-23, ideal for wearables and dense FPGA mezzanines |
| Rail-to-rail input tolerance | Inputs accept –0.5V to 5.5V independent of VCC - eliminates external clamping diodes in mixed-voltage interconnects |
| Ioff partial-power-down | Enables live insertion and back-drive protection with <10μA leakage when VCC = 0V - critical for modular PLC I/O cards |
| Low-impedance 3-state outputs | ±24mA drive at 3V with matched rise/fall times - ensures clean signal edges into 50pF loads without series termination |
| ESD robustness | 2000V HBM, 1000V CDM - exceeds JEDEC JS-001/JS-002 for reliable handling in automated assembly lines |
Applications
| Industrial Motor Control Interface | FPGA I/O Expansion |
|---|---|
|
Use Scenario: Isolating and buffering encoder feedback signals between 24V motor drives and 3.3V FPGA I/O banks. IC Role / Device Role / Timing Role: Signal-level translator and bus isolator; provides 3-state control to prevent contention during FPGA reconfiguration. Use Value: Enables direct connection of 5V-tolerant encoder outputs to 3.3V FPGA pins without external level shifters, while Ioff prevents back-driving during partial power-down. |
Use Scenario: Expanding limited FPGA GPIO count to drive multiple SPI peripherals with shared bus architecture. IC Role / Device Role / Timing Role: Single-channel bidirectional bus buffer; OE synchronized to FPGA control logic to enable/disable peripheral access. Use Value: Delivers 3.7ns tpd and ±24mA drive - maintains timing margins for 50MHz SPI clocking while driving 3+ capacitive loads per bus segment. |
| Automotive Body Control Module | High-Speed Data Acquisition Front-End |
|
Use Scenario: Routing sensor status flags (e.g., door open/closed) from 5V microcontrollers to 1.8V domain processors in BCM sub-modules. IC Role / Device Role / Timing Role: Voltage-domain translator with fail-safe 3-state disable; OE controlled by watchdog timer for fault isolation. Use Value: Supports –40°C to +125°C operation and 5.5V input tolerance - eliminates need for discrete resistive dividers or dedicated translators in harsh under-dash environments. |
Use Scenario: Buffering analog-to-digital converter (ADC) parallel output data lines before latching into memory buffers. IC Role / Device Role / Timing Role: Low-skew, low-capacitance data line driver; 3-state output allows multiplexing multiple ADCs onto shared data buses. Use Value: 4pF input capacitance and 3.7ns tpd preserve setup/hold timing for 100+ MSPS ADC interfaces, reducing jitter-induced quantization error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G125YZPR | Inverting logic function (Y = NOT A); identical package, specs, and Ioff behavior | Requires inverted control signal or downstream logic inversion; unsuitable where signal polarity must be preserved | Select only when system-level logic requires inversion - otherwise SN74LVC1G126YZPR maintains true signal path |
| NC7SZ126P5X | Same function but SC-70-5 package (2.0mm × 2.1mm); higher RθJA (371°C/W vs. 132°C/W); no Ioff spec listed | Larger footprint and reduced thermal performance limit use in high-density or thermally constrained layouts | Prefer SN74LVC1G126YZPR for space-critical designs requiring Ioff and superior thermal dissipation |
Compared with SN74LVC1G125YZPR and NC7SZ126P5X, the SN74LVC1G126YZPR uniquely combines true non-inverting logic, industry-leading DSBGA thermal performance (RθJA = 132°C/W), and verified Ioff support - making it optimal for miniaturized, hot-swap-capable industrial and automotive interfaces where signal integrity and physical size are co-constrained.
Availability
SN74LVC1G126YZPR is available at Aetrix Electronics and suitable for industrial motor control, automotive body electronics, and FPGA I/O expansion requiring stable component supply, long-term lifecycle assurance, and consistent DSBGA-5 packaging.
Supply support for SN74LVC1G126YZPR 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 interface ICs.
The SN74LVC1G126YZPR belongs to TI's LVC (Low-Voltage CMOS) logic family, engineered for low-power, mixed-voltage interoperability in space- and power-constrained embedded systems - particularly targeting industrial automation, automotive ECUs, and portable instrumentation.
FAQ
What is the recommended power supply decoupling for SN74LVC1G126YZPR?
TI recommends a 0.1μF ceramic capacitor placed physically adjacent to the VCC and GND balls of the SN74LVC1G126YZPR, with low-inductance vias to an unbroken ground plane. For broadband noise suppression, add a 1μF capacitor in parallel. This configuration minimizes supply ripple and ensures stable switching performance up to 200MHz, especially critical given the SN74LVC1G126YZPR's 3.7ns propagation delay and fast edge rates.
Does SN74LVC1G126YZPR support hot-plug operation?
Yes - the SN74LVC1G126YZPR supports hot-plug via its Ioff feature, which limits leakage current to ≤10μA when VCC = 0V. This prevents back-driving of powered circuitry during insertion, protecting both the SN74LVC1G126YZPR and host system. To ensure safe operation, tie OE to GND during power-up/down sequences, and verify that all unused inputs are terminated to VCC or GND per TI's Implications of Slow or Floating CMOS Inputs application note.
Can SN74LVC1G126YZPR interface a 5V microcontroller with a 1.8V FPGA?
Yes - the SN74LVC1G126YZPR accepts input voltages up to 5.5V regardless of VCC setting, enabling direct connection of 5V MCU outputs to its A pin while operating at VCC = 1.8V. Its output will swing rail-to-rail (0V to 1.8V), providing valid 1.8V logic levels to the FPGA. This eliminates external level-shifting components and preserves timing integrity due to the SN74LVC1G126YZPR's 3.7ns tpd at 3.3V and scalable performance down to 1.65V.
What is the maximum capacitive load SN74LVC1G126YZPR can drive while maintaining datasheet timing?
The SN74LVC1G126YZPR guarantees full switching specifications (including tpd ≤3.7ns) for loads ≤15pF. At 30–50pF, timing degrades to ≤4.7ns (–40°C to +125°C), still suitable for most medium-speed interfaces. For loads >50pF, TI recommends adding a 10–33Ω series resistor near the output to damp ringing and limit peak current - a practice validated in the SN74LVC1G126YZPR's application curves and layout guidelines for signal integrity preservation.
How does the SN74LVC1G126YZPR handle floating inputs?
The SN74LVC1G126YZPR has standard CMOS inputs requiring defined logic states at all times. Leaving A or OE floating causes excessive power consumption, oscillation, or unpredictable output behavior. TI mandates termination of unused inputs to VCC or GND - either directly or via a 10kΩ pull-up/pull-down resistor. This requirement is explicitly stated in Section 5.3 and reinforced in the "Implications of Slow or Floating CMOS Inputs" application note referenced in the SN74LVC1G126YZPR datasheet.
SN74LVC1G126YZPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 5-XFBGA, DSBGA
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-DSBGA (1.4x0.9)
SN74LVC1G126YZPR FAQ
1.How can I place an order for SN74LVC1G126YZPR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC1G126YZPR 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 SN74LVC1G126YZPR reliable?
The price and inventory of SN74LVC1G126YZPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC1G126YZPR is usually 5 days.
3.What payment methods are accepted for SN74LVC1G126YZPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC1G126YZPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC1G126YZPR?
SN74LVC1G126YZPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC1G126YZPR 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 SN74LVC1G126YZPR?
For technical support, including SN74LVC1G126YZPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC1G126YZPR requirements.
6.How does Aetrix verify that SN74LVC1G126YZPR is sourced from the original manufacturer or authorized distributors?
All SN74LVC1G126YZPR 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 SN74LVC1G126YZPR meets industry standards.
7.What is the process for return or replacement of SN74LVC1G126YZPR?
All SN74LVC1G126YZPR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC1G126YZPR, 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 SN74LVC1G126YZPR part is unused and in its original packaging.
Return procedure for SN74LVC1G126YZPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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