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Nexperia USA Inc. 74HC126PW,118
- Part No.:
- 74HC126PW,118
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HC126PW,118.pdf
- Description:
- IC BUFFER NON-INVERT 6V 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,247
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Product details
Overview
74HC126PW,118 from Nexperia is a quad 3-state buffer/line driver IC in TSSOP14 package, operating from 2.0 V to 6.0 V supply, with CMOS-level inputs, ±35 mA output drive, and propagation delay as low as 9 ns at VCC = 6.0 V. It serves as a bidirectional bus interface or signal isolation element in digital logic systems requiring controlled output enable sequencing.
For engineers reviewing the 74HC126PW,118 datasheet, 74HC126PW,118 pinout, 74HC126PW,118 application, or 74HC126PW,118 equivalent, key selection criteria include 3-state timing (enable/disable times ≤32 ns), input clamp diode support for overvoltage-tolerant interfacing, and guaranteed operation across -40 °C to +125 °C industrial temperature range.
Technical Context
This device implements four independent non-inverting buffers, each with dedicated active-HIGH output enable (nOE) control. The 3-state outputs are fully specified for high-impedance OFF-state leakage (±10 μA max at VCC = 6.0 V) and fast transition between driven and tri-stated states.
Input clamping diodes allow safe interfacing to signals exceeding VCC when used with current-limiting resistors. Static characteristics include VIH = 4.2 V (min) and VOL = 0.4 V (max) at IO = 7.8 mA and VCC = 6.0 V, ensuring robust noise margins in mixed-voltage systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 2.0 V to 6.0 V - supports direct interface with 3.3 V and 5 V logic domains without level shifters |
| Propagation delay | 9 ns (typ) at VCC = 6.0 V - enables reliable operation in 50 MHz+ synchronous bus environments |
| Output drive | ±35 mA - sufficient to drive multiple TTL loads or moderate capacitive loads (≤50 pF) |
| Enable/disable time | 12–32 ns (max) - ensures precise timing control for bus arbitration and hot-swap isolation |
| Operating temperature | -40 °C to +125 °C - qualified for under-hood, industrial control, and extended-range embedded applications |
| Input clamp diodes | Integrated - permits safe connection of inputs to voltages up to VCC + 0.5 V using external current-limiting resistors |
| ESD protection | HBM >2000 V, CDM >1000 V - enhances reliability during PCB handling and system integration |
Pinout & Package
TSSOP14 plastic thin shrink small outline package (SOT402-1), 14-lead, body width 4.4 mm, lead pitch 0.65 mm, designed for high-density PCB layouts with improved thermal dissipation vs. SO14.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | nOE (1OE–4OE) | Active-HIGH output enable inputs - each controls one buffer's 3-state output independently |
| 2, 5, 9, 12 | nA (1A–4A) | Buffer input terminals - accept CMOS-level signals; include internal clamp diodes to VCC and GND |
| 3, 6, 8, 11 | nY (1Y–4Y) | Non-inverting buffered outputs - drive high or low, or enter high-impedance state per nOE control |
| 7 | GND | Ground reference (0 V) - must be low-impedance connection to minimize switching noise coupling |
| 14 | VCC | Positive supply rail - decoupling capacitor (100 nF ceramic) required within 5 mm of this pin |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply range | 2.0 V to 6.0 V - eliminates need for separate voltage regulators in multi-rail systems |
| CMOS low power | ICC ≤ 160 μA (max) at VCC = 6.0 V - reduces static power in always-on control logic |
| High noise immunity | VIH/VIL thresholds ratio ≥ 60% of VCC - rejects transient noise on shared PCB traces |
| Latch-up immunity | Exceeds 100 mA per JESD78 Class II Level B - prevents destructive latch-up during ESD or surge events |
| JEDEC compliance | JESD8C (2.7–3.6 V) and JESD7A (2.0–6.0 V) - ensures interoperability with standard logic families |
Applications
| Industrial PLC I/O Expansion | Microcontroller Bus Isolation |
|---|---|
Use Scenario: Isolating microcontroller GPIO banks from noisy 24 V field I/O modules via optocoupler interfaces. IC Role / Device Role / Timing Role: Bidirectional buffer enabling clean signal transfer while preventing ground loop currents and back-driving. Use Value: Prevents MCU reset or damage from field-side transients; 3-state control allows dynamic bus sharing among multiple peripheral controllers. |
Use Scenario: Driving parallel address/data lines between an ARM Cortex-M7 and external SRAM or FPGA configuration memory. IC Role / Device Role / Timing Role: Signal repeater and bus driver with synchronized 3-state control to avoid contention during memory read/write cycles. Use Value: Ensures setup/hold timing compliance with SRAM access windows; ±35 mA drive sustains signal integrity across 10 cm PCB traces. |
| Test Equipment Signal Routing | Legacy System Voltage Translation |
Use Scenario: Multiplexing test signals from multiple DUTs onto a shared measurement bus in automated test fixtures. IC Role / Device Role / Timing Role: Selectively enabled buffer providing deterministic signal path isolation between DUT channels. Use Value: Enables channel-to-channel crosstalk reduction below -60 dB; fast disable time (<32 ns) prevents signal overlap during switching. |
Use Scenario: Interfacing a 3.3 V FPGA I/O bank to legacy 5 V TTL peripherals in retrofitted instrumentation systems. IC Role / Device Role / Timing Role: Level-tolerant buffer accepting 5 V inputs (via clamp diodes) and driving 3.3 V-compatible outputs. Use Value: Eliminates need for discrete resistor networks or dedicated level translators; maintains full-speed operation up to 50 MHz. |
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 |
|---|---|---|---|
| 74HCT126PW,118 | TTL-compatible inputs (VIH = 2.0 V min), identical pinout and timing | Better suited for mixed 5 V TTL/CMOS systems where input thresholds must match legacy logic | Select when interfacing directly to 5 V TTL outputs without pull-ups |
| SN74LVC126APW | Lower VCC range (1.65–3.6 V), higher speed (tpd = 3.7 ns typ @ 3.3 V), different pinout | Optimized for modern low-voltage FPGAs and SoCs; not drop-in compatible | Choose for new 3.3 V designs requiring sub-5 ns timing and lower power |
Compared with 74HC126PW,118, the 74HCT126PW,118 offers guaranteed TTL input compatibility at 5 V but shares identical packaging and 3-state behavior, whereas SN74LVC126APW delivers faster performance in narrow-voltage systems but requires PCB layout revision due to non-matching pin assignment.
Availability
74HC126PW,118 is available at Aetrix Electronics and suitable for industrial automation, test equipment, and embedded microcontroller interface applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HC126PW,118 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 manufacturability in high-volume applications.
The 74HC126 belongs to Nexperia's industry-standard HC logic family, engineered for robustness in industrial and automotive-adjacent systems where wide voltage operation, ESD resilience, and extended temperature stability are critical.
FAQ
Can 74HC126PW,118 operate reliably at 2.0 V supply?
Yes. The device is fully characterized from 2.0 V to 6.0 V, with propagation delay ≤100 ns and output drive ≥±4 mA at VCC = 2.0 V. Input thresholds scale with VCC (VIH = 1.5 V min), ensuring correct logic interpretation across the entire range.
What is the maximum capacitive load this IC can drive without signal degradation?
At VCC = 6.0 V and CL = 50 pF, propagation delay remains ≤26 ns and transition time ≤15 ns. Driving loads beyond 50 pF increases delay nonlinearly and may cause ringing; for >75 pF, series termination or buffer staging is recommended.
Is the 74HC126PW,118 pin-compatible with 74HC125?
No. The 74HC125 is an inverting quad buffer with identical pinout but complementary logic function. Swapping them causes functional inversion - e.g., an active-HIGH enable becomes active-LOW in effect - requiring schematic and firmware revision.
Does this part support hot insertion into a live backplane?
Not inherently. While input clamp diodes and 3-state outputs reduce risk, the device lacks explicit hot-swap circuitry (e.g., slew-rate limiting, undervoltage lockout). Safe hot insertion requires external current-limiting resistors and controlled power-rail ramp rates per system-level design.
74HC126PW,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HC
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 7.8mA, 7.8mA
- Voltage - Supply:
- 2V ~ 6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
74HC126PW,118 FAQ
1.How can I place an order for 74HC126PW,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC126PW,118 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 74HC126PW,118 reliable?
The price and inventory of 74HC126PW,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC126PW,118 is usually 5 days.
3.What payment methods are accepted for 74HC126PW,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC126PW,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC126PW,118?
74HC126PW,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC126PW,118 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 74HC126PW,118?
For technical support, including 74HC126PW,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC126PW,118 requirements.
6.How does Aetrix verify that 74HC126PW,118 is sourced from the original manufacturer or authorized distributors?
All 74HC126PW,118 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 74HC126PW,118 meets industry standards.
7.What is the process for return or replacement of 74HC126PW,118?
All 74HC126PW,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC126PW,118, 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 74HC126PW,118 part is unused and in its original packaging.
Return procedure for 74HC126PW,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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