Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

Texas Instruments SN74ALVC126NS

Name: SN74ALVC126NS
Brand: Texas Instruments
SKU: SN74ALVC126NS
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: SN74ALVC126NS

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 14-SOIC (0.209", 5.30mm Width)

Datasheet:: SN74ALVC126NS.pdf

Description:: IC BUFFER NON-INVERT 3.6V 14SO

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:4,200

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

SN74ALVC126NS from Texas Instruments is a quad non-inverting 3-state buffer/line driver with 5 V tolerant inputs and outputs, operating from 1.65 V to 3.6 V supply, delivering ±24 mA drive strength at 3.0 V, and supporting industrial temperature range (−40 °C to +85 °C). It enables bidirectional level translation between 3.3 V logic domains and legacy 5 V systems in bus interface applications.

For engineers reviewing the SN74ALVC126NS datasheet, SN74ALVC126NS pinout, SN74ALVC126NS application, or SN74ALVC126NS equivalent, key selection criteria include 5 V tolerance on I/O pins, low propagation delay (as low as 1.0 ns at 3.3 V), 3-state enable timing (enable/disable < 7.5 ns), wide V_CC range, and JEDEC-compliant ESD robustness (HBM > 2000 V).

Technical Context

This device implements four independent non-inverting buffers, each with an active-HIGH output enable (nOE) controlling high-impedance state. Each channel supports 5 V tolerant operation regardless of V_CC, enabling safe interfacing between mixed-voltage subsystems without external level shifters.

It complies with JEDEC standards JESD8-7A (1.65–1.95 V), JESD8-5A (2.3–2.7 V), and JESD8-C/JESD36 (2.7–3.6 V), and features CMOS input structure with TTL-compatible thresholds. Static current consumption remains below 40 µA over full temperature range, and dynamic power is governed by CPD = 12.2 pF at 3.3 V.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	1.65 V to 3.6 V - Enables direct use in 1.8 V, 2.5 V, and 3.3 V digital systems without voltage translation.
I/O Voltage Tolerance	Up to 5.5 V - Allows safe connection to 5 V buses while powered from lower V_CC, eliminating need for external clamping diodes.
Output Drive	±24 mA at V_CC = 3.0 V - Sufficient to drive 50 Ω transmission lines or multiple LVC/LVT inputs under worst-case conditions.
Propagation Delay	1.0 ns to 6.0 ns (V_CC = 3.0–3.6 V) - Supports high-speed data routing in memory address/data buses and FPGA I/O expansion.
Enable/Disable Time	1.0 ns to 7.5 ns (V_CC = 3.0–3.6 V) - Ensures clean bus arbitration with minimal contention window during 3-state transitions.
ESD Rating	HBM > 2000 V, CDM > 1000 V - Meets industrial handling requirements without additional board-level protection.
Operating Temperature	−40 °C to +85 °C - Qualified for commercial and industrial ambient environments without derating.

Pinout & Package

SN74ALVC126NS uses the SO-14 (Small Outline) package: plastic small outline package, 14 leads, body width 3.9 mm, standard JEDEC MS-012 outline (SOT108-1).

Pin/Terminal	Circuit Role	Design Meaning
1, 4, 10, 13	nOE (active-HIGH enable)	Independent control per buffer; LOW forces output to high-impedance state, enabling shared-bus operation.
2, 5, 9, 12	nA (input)	CMOS input with TTL-compatible thresholds; accepts 0–5.5 V regardless of V_CC.
3, 6, 8, 11	nY (output)	Push-pull output capable of sourcing/sinking up to ±24 mA; 5 V tolerant in 3-state and active states.
7	GND	Reference ground for all logic and power domains; must be low-inductance connection for signal integrity.
14	V_CC	Single supply rail (1.65–3.6 V); powers internal logic and output drivers; requires local 100 nF decoupling.

Key Features

Feature	Design Value
5 V tolerant I/O	Enables direct connection to 5 V peripherals (e.g., legacy microcontrollers, EEPROMs) while operating from 3.3 V or lower rails - no external level shifters required.
Wide V_CC range (1.65–3.6 V)	Supports interoperability across 1.8 V, 2.5 V, and 3.3 V logic families in mixed-supply systems such as FPGA-based embedded controllers.
Low dynamic power (CPD = 12.2 pF)	Reduces switching power dissipation in high-frequency bus applications (e.g., address/data multiplexing), critical for thermally constrained PCB layouts.
JEDEC-compliant ESD protection	HBM > 2000 V ensures robustness during board assembly and field handling without requiring extra protection circuitry.
Fast 3-state control (t_en/t_dis ≤ 7.5 ns)	Minimizes bus contention risk in multi-master systems like I²C expanders or memory-mapped peripheral interfaces.

Applications

Memory Address Bus Buffering	FPGA I/O Expansion Interface
Use Scenario: Isolating and driving address lines from a microcontroller to multiple SRAM or Flash devices sharing a common data/address bus. IC Role / Device Role / Timing Role: Non-inverting buffer with 3-state control synchronizing address latching and preventing bus contention during read/write cycles. Use Value: Eliminates signal degradation over long traces; 5 V tolerance allows coexistence with older 5 V memory parts; sub-6 ns delay preserves setup/hold timing margins.	Use Scenario: Extending FPGA GPIO count to interface with off-board sensors, displays, or industrial I/O modules using standardized parallel protocols. IC Role / Device Role / Timing Role: Level-translating line driver enabling FPGA core logic (1.8 V/2.5 V) to communicate with 3.3 V or 5 V peripheral logic without voltage translators. Use Value: Reduces BOM count and layout area; ±24 mA drive supports capacitive loads up to 50 pF; fast enable/disable prevents glitches during configuration changes.
Industrial PLC Backplane Interface	Test Equipment Signal Routing
Use Scenario: Interfacing modular I/O cards with a central controller backplane where modules operate at different logic voltages (e.g., 2.5 V CPU card, 5 V analog I/O card). IC Role / Device Role / Timing Role: Bidirectional voltage-agnostic buffer managing direction-controlled data flow between mismatched voltage domains on a shared backplane bus. Use Value: 5 V tolerant I/O eliminates risk of latch-up when hot-plugging modules; −40 °C to +85 °C rating ensures reliability in uncontrolled cabinet environments.	Use Scenario: Multiplexing test signals between automated test equipment (ATE) channels and DUT pins during functional testing of mixed-voltage SoCs. IC Role / Device Role / Timing Role: Precision-controlled 3-state switch enabling deterministic signal path selection with nanosecond-level timing control and minimal crosstalk. Use Value: Sub-7 ns enable/disable time supports high-throughput test sequencing; low output capacitance (4.0 pF) preserves signal edge fidelity for high-speed digital pattern generation.

Memory Address Bus Buffering

FPGA I/O Expansion Interface

Use Scenario: Isolating and driving address lines from a microcontroller to multiple SRAM or Flash devices sharing a common data/address bus.

IC Role / Device Role / Timing Role: Non-inverting buffer with 3-state control synchronizing address latching and preventing bus contention during read/write cycles.

Use Value: Eliminates signal degradation over long traces; 5 V tolerance allows coexistence with older 5 V memory parts; sub-6 ns delay preserves setup/hold timing margins.

Use Scenario: Extending FPGA GPIO count to interface with off-board sensors, displays, or industrial I/O modules using standardized parallel protocols.

IC Role / Device Role / Timing Role: Level-translating line driver enabling FPGA core logic (1.8 V/2.5 V) to communicate with 3.3 V or 5 V peripheral logic without voltage translators.

Use Value: Reduces BOM count and layout area; ±24 mA drive supports capacitive loads up to 50 pF; fast enable/disable prevents glitches during configuration changes.

Industrial PLC Backplane Interface

Test Equipment Signal Routing

Use Scenario: Interfacing modular I/O cards with a central controller backplane where modules operate at different logic voltages (e.g., 2.5 V CPU card, 5 V analog I/O card).

IC Role / Device Role / Timing Role: Bidirectional voltage-agnostic buffer managing direction-controlled data flow between mismatched voltage domains on a shared backplane bus.

Use Value: 5 V tolerant I/O eliminates risk of latch-up when hot-plugging modules; −40 °C to +85 °C rating ensures reliability in uncontrolled cabinet environments.

Use Scenario: Multiplexing test signals between automated test equipment (ATE) channels and DUT pins during functional testing of mixed-voltage SoCs.

IC Role / Device Role / Timing Role: Precision-controlled 3-state switch enabling deterministic signal path selection with nanosecond-level timing control and minimal crosstalk.

Use Value: Sub-7 ns enable/disable time supports high-throughput test sequencing; low output capacitance (4.0 pF) preserves signal edge fidelity for high-speed digital pattern generation.

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
74LVC126A (NXP)	Identical logic function, pinout, and DC specs; differs in packaging options (SO14, SSOP14, TSSOP14, DHVQFN14) and minor AC timing tolerances (e.g., t_pd max 6.0 ns vs. 6.6 ns at 2.7 V).	Same industrial temperature range (−40 °C to +125 °C), broader package availability, and identical JEDEC compliance - suitable for drop-in replacement where footprint matches.	Select when needing extended temperature support (+125 °C) or alternative packages (e.g., space-constrained TSSOP14).
SN74LVCH126A (TI)	Includes bus-hold circuitry on inputs (no external pull-ups needed); otherwise identical V_CC range, 5 V tolerance, and drive strength; slightly higher ICC (max 40 µA vs. 10 µA typical).	Preferred in floating-input scenarios (e.g., unconnected test points, hot-swap nodes) where input stability without external resistors is critical.	Select when input bus-hold functionality is required to prevent undefined states during system initialization or partial power-down.

Compared with 74LVC126A and SN74LVCH126A, SN74ALVC126NS offers optimized propagation delay at 3.3 V (1.0 ns typ), tighter enable timing, and TI-specific qualification - making it ideal for high-speed, low-power industrial bus buffering where timing margin is constrained.

Availability

SN74ALVC126NS is available at Aetrix Electronics and suitable for memory bus buffering, FPGA I/O expansion, industrial PLC backplanes, and ATE signal routing requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for SN74ALVC126NS 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 decades of experience in high-reliability logic interface products.

SN74ALVC126NS belongs to the ALVC (Advanced Low-Voltage CMOS) logic family, designed specifically for low-voltage, high-speed, mixed-voltage system interfacing in industrial and communications infrastructure applications.

FAQ

What is the maximum supply voltage for SN74ALVC126NS?

The absolute maximum supply voltage (V_CC) for SN74ALVC126NS is +6.5 V, but recommended operation is strictly limited to 1.65 V to 3.6 V per datasheet Section 8. Operating above 3.6 V risks violating recommended conditions and may impact timing, drive strength, and reliability - always adhere to the 3.6 V upper limit for normal use of SN74ALVC126NS.

Can SN74ALVC126NS safely interface with 5 V logic while powered at 3.3 V?

Yes. SN74ALVC126NS features 5 V tolerant inputs and outputs, meaning it can accept and drive signals up to 5.5 V even when V_CC is as low as 1.65 V. This capability is explicitly guaranteed in the datasheet's Recommended Operating Conditions (Table 5) and Limiting Values (Table 4), making SN74ALVC126NS suitable for mixed-voltage interconnect without level shifters.

What is the operating temperature range for SN74ALVC126NS?

SN74ALVC126NS is specified for operation from −40 °C to +85 °C, qualifying it for commercial and industrial ambient environments. This range is confirmed in the "Recommended Operating Conditions" table (Section 8) and applies across all supported V_CC levels (1.65–3.6 V) and load conditions defined in the datasheet.

Does SN74ALVC126NS require external pull-up or pull-down resistors on its inputs?

No. SN74ALVC126NS does not integrate bus-hold circuitry; its inputs are standard CMOS with defined VIH/VIL thresholds. External pull-up/down resistors are only needed if the system design requires a known default state during power-up, reset, or high-impedance conditions - this behavior is identical across all ALVC-series buffers including SN74ALVC126NS.

How many independent buffers does SN74ALVC126NS contain?

SN74ALVC126NS contains four independent non-inverting 3-state buffers, each with dedicated input (nA), output (nY), and active-HIGH output enable (nOE) pins. Pin assignments are fixed per the SO-14 pinout: Channels 1–4 map to pins (1,2,3), (4,5,6), (10,9,8), and (13,12,11), respectively - fully documented in Section 5.2 of the SN74ALVC126NS datasheet.

SN74ALVC126NS Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74ALVC

Package/Case:: 14-SOIC (0.209", 5.30mm Width)

Packaging:: Bulk

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 ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SO

SN74ALVC126NS FAQ

1.How can I place an order for SN74ALVC126NS through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74ALVC126NS 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 SN74ALVC126NS reliable?

The price and inventory of SN74ALVC126NS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ALVC126NS is usually 5 days.

3.What payment methods are accepted for SN74ALVC126NS?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74ALVC126NS transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN74ALVC126NS?

SN74ALVC126NS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74ALVC126NS 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 SN74ALVC126NS?

For technical support, including SN74ALVC126NS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ALVC126NS requirements.

6.How does Aetrix verify that SN74ALVC126NS is sourced from the original manufacturer or authorized distributors?

All SN74ALVC126NS 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 SN74ALVC126NS meets industry standards.

7.What is the process for return or replacement of SN74ALVC126NS?

All SN74ALVC126NS units undergo pre-shipment inspection (PSI). If there is an issue with SN74ALVC126NS, 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 SN74ALVC126NS part is unused and in its original packaging.

Return procedure for SN74ALVC126NS:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

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.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

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…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

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…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

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…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

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 …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

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…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

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…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

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…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

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…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

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…