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Nexperia USA Inc. 74LVT126PW,112
- Part No.:
- 74LVT126PW,112
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74LVT126PW,112.pdf
- Description:
- IC BUF NON-INVERT 3.6V 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,351
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Product details
Overview
74LVT126PW,112 from Nexperia is a 3.3 V quad non-inverting 3-state buffer with bus-hold inputs, IOFF partial power-down protection, and ±64 mA/–32 mA output drive. It operates from 2.7 V to 3.6 V, tolerates 5.5 V inputs, and supports hot-plug operation in mixed-voltage backplane or motherboard I/O expansion interfaces.
For engineers reviewing the 74LVT126PW,112 datasheet, 74LVT126PW,112 pinout, 74LVT126PW,112 application, or 74LVT126PW,112 equivalent, this device is selected for high-speed 3.3 V logic interfacing where bus contention avoidance, input state retention without pull-ups, and safe power sequencing are required.
Technical Context
The 74LVT126PW,112 implements four independent BiCMOS buffer channels, each with separate active-low 3-state enable (nOE) control. Its IOFF circuit disables outputs during VCC ramp-down to block reverse current flow, enabling partial power-down in multi-rail systems.
Bus-hold circuitry maintains valid logic states on unused inputs at 75–150 μA hold current, eliminating external biasing. Input overvoltage tolerance to 5.5 V allows direct connection to 5 V buses without level shifters, while propagation delays as low as 1.0 ns (tPLH/tPHL @ 3.3 V) support >200 MHz data rates.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 3.6 V - ensures compatibility with 3.3 V ±0.3 V system rails and robust noise margin |
| Input Voltage Range | 0 V to 5.5 V - enables direct interfacing with 5 V TTL and CMOS logic without translation |
| Output Drive | +64 mA / –32 mA - supports driving heavy capacitive loads (e.g., 50 pF traces) and fan-out to multiple inputs |
| Propagation Delay | 1.0 ns (min) @ 3.3 V - enables sub-5 ns edge-to-edge timing for high-speed address/data buffering |
| IOFF Leakage | ±100 μA @ VCC = 0 V - prevents damaging backflow current when powered down in live-insertion systems |
| Bus-Hold Current | ±75 μA @ 3 V - retains input logic state without external resistors, reducing BOM count and board space |
| Operating Temperature | –40 °C to +85 °C - qualified for industrial-grade embedded control and communications equipment |
Pinout & Package
TSSOP14 plastic thin shrink small outline package (SOT402-1), 14-lead, body width 4.4 mm, 0.65 mm pitch, exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | nOE (active-low output enable) | Independent per-channel 3-state control; LOW enables output, HIGH forces high-impedance OFF-state |
| 2, 5, 9, 12 | nA (data input) | Buffer input with bus-hold; retains last valid logic state when floating |
| 3, 6, 8, 11 | nY (non-inverting output) | Push-pull output capable of sourcing +64 mA or sinking –32 mA into load |
| 7 | GND | Ground reference for all internal circuitry and I/O |
| 14 | VCC | Primary supply rail (2.7–3.6 V); powers all logic and output stages |
Key Features
| Feature | Design Value |
|---|---|
| Quad 3-state buffer architecture | Four independent channels with individual nOE control enable selective bus isolation in multi-drop systems |
| IOFF partial power-down | Automatically disables outputs and limits leakage to ±100 μA when VCC = 0 V, enabling safe hot-swap |
| 5.5 V-tolerant inputs | Accepts 5 V logic levels while powered from 3.3 V, eliminating level translators in mixed-supply backplanes |
| Bus-hold inputs | Maintains stable logic state on unconnected inputs using internal feedback, removing need for 10 kΩ pull-up/down resistors |
| BiCMOS output stage | Combines bipolar speed and CMOS efficiency to achieve 1.0 ns min propagation delay with high current drive |
Applications
| Backplane Data Buffering | Industrial I/O Expansion Module |
|---|---|
|
Use Scenario: Isolating and driving parallel data lines between a 3.3 V controller and legacy 5 V peripheral cards in a modular rack system. IC Role / Device Role / Timing Role: Quad non-inverting buffer with per-channel 3-state control manages bidirectional data flow and prevents bus contention during card insertion/removal. Use Value: 5.5 V input tolerance and IOFF protection allow safe live insertion without disrupting other slots; bus-hold eliminates pull-up resistors on unused address lines. |
Use Scenario: Interfacing a microcontroller's GPIO port to multiple isolated digital input/output terminals in a programmable logic controller (PLC) base unit. IC Role / Device Role / Timing Role: Level-shifting buffer translating 3.3 V MCU signals to 5 V-compatible field-side logic while providing ESD-hardened I/O protection. Use Value: ±2000 V HBM ESD rating and –40 °C to +85 °C operation ensure reliability in electrically noisy factory environments; low 1.0 ns propagation delay preserves timing margins. |
| Memory Address Latching Interface | Hot-Swappable Communication Card |
|
Use Scenario: Driving address lines from a 3.3 V SoC to multiple SRAM or Flash devices sharing a common data bus in an embedded media processor. IC Role / Device Role / Timing Role: Address line buffer with 3-state outputs enables time-multiplexed access to memory banks while minimizing capacitive loading on the SoC pins. Use Value: +64 mA output drive supports fan-out to ≥10 memory inputs; 8 pF output capacitance minimizes signal distortion on high-frequency address strobes. |
Use Scenario: Enabling hot-plug capability for PCIe or CompactPCI communication cards by isolating host-side 3.3 V logic from card-side 5 V signaling domains. IC Role / Device Role / Timing Role: Bus interface buffer with IOFF and bus-hold ensures no backfeed or floating inputs occur during card insertion or removal under power. Use Value: IOFF leakage < ±100 μA prevents damage to powered host logic; bus-hold retains configuration state during brief disconnection events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC126APWR | Lower drive (+24 mA / –24 mA), narrower VCC range (1.65–3.6 V), no IOFF or bus-hold | Suitable only for low-capacitance, single-supply 3.3 V systems without hot-swap requirements | Select when cost and power are prioritized over robustness and mixed-voltage interoperability |
| 74ALVC126PW,118 | Same pinout and bus-hold, but no IOFF and lower max VCC (3.6 V vs. 4.6 V absolute max) | Lacks partial power-down protection; unsuitable for live-insertion or multi-rail sequencing | Choose only if IOFF is not required and full 5.5 V input tolerance is unnecessary |
Compared with SN74LVC126APWR and 74ALVC126PW,118, the 74LVT126PW,112 uniquely delivers 5.5 V input tolerance, IOFF-enabled safe power-down, and higher output drive-making it the sole option for industrial backplane and hot-swap designs requiring both voltage interoperability and fault resilience.
Availability
74LVT126PW,112 is available at Aetrix Electronics and suitable for industrial I/O expansion modules, hot-swappable communication cards, and memory address latching interfaces requiring stable component supply across extended temperature and mixed-voltage conditions.
Supply support for 74LVT126PW,112 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
Nexperia is a global semiconductor expert delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial and consumer electronics.
The 74LVT series targets high-speed 3.3 V logic interfacing in demanding applications such as telecom infrastructure, industrial automation, and computing backplanes where robustness, timing precision, and mixed-voltage compatibility are critical.
FAQ
What is the maximum input voltage the 74LVT126PW,112 can tolerate while powered at 3.3 V?
The 74LVT126PW,112 accepts input voltages up to +5.5 V regardless of VCC level, as confirmed in Table 4 (Limiting Values) and Table 5 (Operating Conditions). This overvoltage tolerance enables direct connection to 5 V buses without external level-shifting components, provided clamp currents remain within ±50 mA limits.
Does the 74LVT126PW,112 support live insertion when VCC is off?
Yes. The IOFF circuit actively disables outputs and limits power-off leakage to ±100 μA when VCC = 0 V, preventing damaging reverse current flow during hot-swap events. This behavior is specified in Section 2 (Features and benefits) and Table 6 (Static characteristics), making it suitable for live-insertion applications like CompactPCI or AdvancedTCA systems.
How does bus-hold functionality eliminate external pull-up resistors?
Each input incorporates a weak feedback circuit that sources or sinks 75–150 μA to retain its last valid logic state when left floating. As stated in Section 1 and Table 6, this internal bus-hold current maintains stable HIGH or LOW levels without external biasing-reducing BOM count, PCB area, and potential noise coupling from resistor networks.
What is the minimum propagation delay for the 74LVT126PW,112 at 3.3 V?
The minimum propagation delay is 1.0 ns for both tPLH (LOW-to-HIGH) and tPHL (HIGH-to-LOW) at VCC = 3.3 V ± 0.3 V and Tamb = –40 °C to +85 °C, per Table 7 (Dynamic characteristics). This value reflects guaranteed performance across full temperature and voltage ranges-not just typical conditions-and supports reliable operation in sub-5 ns timing-critical paths.
74LVT126PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74LVT
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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:
- 32mA, 64mA
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
74LVT126PW,112 FAQ
1.How can I place an order for 74LVT126PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVT126PW,112 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 74LVT126PW,112 reliable?
The price and inventory of 74LVT126PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVT126PW,112 is usually 5 days.
3.What payment methods are accepted for 74LVT126PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVT126PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVT126PW,112?
74LVT126PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVT126PW,112 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 74LVT126PW,112?
For technical support, including 74LVT126PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVT126PW,112 requirements.
6.How does Aetrix verify that 74LVT126PW,112 is sourced from the original manufacturer or authorized distributors?
All 74LVT126PW,112 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 74LVT126PW,112 meets industry standards.
7.What is the process for return or replacement of 74LVT126PW,112?
All 74LVT126PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVT126PW,112, 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 74LVT126PW,112 part is unused and in its original packaging.
Return procedure for 74LVT126PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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