My Inquiry
My Account
Nexperia USA Inc. 74HCT126PW-Q100J
- Part No.:
- 74HCT126PW-Q100J
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HCT126PW-Q100J.pdf
- Description:
- IC BUF NON-INVERT 5.5V 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,734
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74HCT126PW-Q100 from Nexperia is an automotive-qualified quad 3-state buffer/line driver with TTL-compatible inputs, operating from 4.5 V to 5.5 V, delivering ±6 mA output drive at VCC = 4.5 V, and rated for -40 °C to +125 °C ambient temperature - used in CAN/LIN bus interface signal conditioning and ECU I/O expansion.
For engineers reviewing the 74HCT126PW-Q100 datasheet, 74HCT126PW-Q100 pinout, 74HCT126PW-Q100 application, or 74HCT126PW-Q100 equivalent, key selection criteria include TTL-level input compatibility, 3-state enable timing (ten ≤ 38 ns at VCC = 4.5 V), high-temperature operation up to +125 °C, and AEC-Q100 Grade 1 qualification for under-hood automotive modules.
Technical Context
This device implements four independent non-inverting buffers, each with active-HIGH output enable (nOE) controlling high-impedance OFF-state. Input clamp diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors.
It conforms to JEDEC JESD7A (2.0–6.0 V) and JESD8C (2.7–3.6 V) standards, supports CMOS-level outputs with TTL-compatible inputs, and features latch-up immunity >100 mA per JESD78 Class II Level B.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures robust operation across automotive battery rail variations including cold-crank transients. |
| Input Logic Type | TTL-compatible - accepts standard 5 V logic thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V), enabling direct connection to legacy microcontrollers. |
| Output Drive | ±6.0 mA at VCC = 4.5 V - sufficient to drive 50 pF loads with <36 ns propagation delay, supporting medium-speed bus buffering. |
| Enable Timing | ten ≤ 38 ns, tdis ≤ 42 ns at VCC = 4.5 V - enables precise bus arbitration and hot-swap-safe I/O isolation in multiplexed systems. |
| Temperature Range | -40 °C to +125 °C - qualified for engine compartment and powertrain control unit deployment per AEC-Q100 Grade 1. |
| ESD Protection | HBM >2000 V, CDM >1000 V - enhances reliability during automated PCB assembly and field service handling. |
Pinout & Package
TSSOP14 plastic thin shrink small outline package (SOT402-1), 14-lead, body width 4.4 mm, 0.65 mm pitch - optimized for high-density automotive PCB layouts with improved thermal dissipation vs. SO14.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 (1OE–4OE) | Active-HIGH output enable | Individually controls 3-state output of corresponding buffer; LOW disables output (Z-state), HIGH enables pass-through. |
| 2, 5, 9, 12 (1A–4A) | Data input | Non-inverting input for each buffer channel; accepts TTL logic levels with internal clamp diodes for overvoltage tolerance. |
| 3, 6, 8, 11 (1Y–4Y) | Data output | CMOS-compatible buffered output; drives loads up to ±6 mA while maintaining rail-to-rail swing (VOH ≥ 3.98 V, VOL ≤ 0.33 V). |
| 7 | GND | Ground reference (0 V) for all logic and power domains; requires low-impedance PCB return path for noise immunity. |
| 14 | VCC | Primary supply rail (4.5–5.5 V); decoupling capacitor (100 nF) required within 5 mm for stable switching performance. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use from -40 °C to +125 °C, including temperature cycling, humidity testing, and mechanical shock per AEC specification. |
| Input clamp diodes | Enables safe interface to signals up to VCC + 0.5 V using external current-limiting resistors - critical for mixed-voltage domain bridging. |
| High noise immunity | Typical noise margin >1.2 V at VCC = 4.5 V due to TTL input thresholds and CMOS output drive strength. |
| Low static current | ICC ≤ 160 μA at VCC = 5.5 V and full temperature range - reduces quiescent power in always-on vehicle modules. |
| 3-state output control | Independent OE pins per channel allow selective bus contention avoidance without requiring global reset sequencing. |
Applications
| Body Control Module (BCM) Signal Routing | Instrument Cluster Display Interface |
|---|---|
|
Use Scenario: Isolating and buffering sensor data lines (e.g., door switch, seat position) before multiplexing onto a LIN bus. IC Role / Device Role / Timing Role: Quad buffer provides galvanic separation and level translation between 3.3 V MCU GPIOs and 5 V LIN transceiver inputs. Use Value: Enables reliable signal integrity across noisy chassis grounds while supporting hot-plug detection via controlled 3-state enable timing. |
Use Scenario: Driving multiple parallel segments of a segmented LCD or LED display from a single microcontroller port. IC Role / Device Role / Timing Role: Line driver amplifies MCU output current to meet display segment sink requirements without loading the MCU port. Use Value: Eliminates need for discrete transistor arrays; 3-state capability allows dynamic segment blanking and brightness control via OE modulation. |
| Engine Control Unit (ECU) Diagnostic Port | ADAS Camera Power Sequencing |
|
Use Scenario: Buffering K-line or ISO 9141 diagnostic signals between OBD-II connector and ECU UART peripheral. IC Role / Device Role / Timing Role: Bidirectional line driver with fast enable/disable (≤38 ns) ensures clean protocol handshaking during diagnostic session initiation. Use Value: Prevents signal reflections and ground bounce during high-speed K-line transitions, improving diagnostic tool interoperability. |
Use Scenario: Controlling power-enable signals to multiple camera modules in a surround-view system with staggered startup. IC Role / Device Role / Timing Role: 3-state buffer sequences camera rail activation by gating EN signals with timed OE pulses from MCU timer outputs. Use Value: Reduces inrush current peak by >60% compared to simultaneous enable, avoiding voltage droop on shared 5 V rail. |
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 |
|---|---|---|---|
| 74HCT125PW-Q100 | Inverting output polarity; identical pinout, supply, and timing specs. | Requires logic inversion in upstream firmware or external feedback path for non-inverting signal paths. | Select only when system-level signal flow benefits from inversion (e.g., active-low enable propagation). |
| SN74LVC126APWREP | Lower VCC range (1.65–5.5 V); higher speed (tpd ≤ 4.4 ns @ 3.3 V); not AEC-Q100 qualified. | Suitable for infotainment head units but not under-hood ECUs due to lack of automotive qualification. | Prefer for cost-sensitive cabin electronics where extended temperature rating is unnecessary. |
Compared with 74HCT126PW-Q100, the 74HCT125PW-Q100 offers functional equivalence with inverted outputs - useful for specific control logic flows - while the SN74LVC126APWREP trades automotive qualification for higher speed and broader voltage flexibility in non-critical environments.
Availability
74HCT126PW-Q100 is available at Aetrix Electronics and suitable for automotive body control modules, instrument cluster interfaces, and ADAS camera power sequencing requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HCT126PW-Q100 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 specializing in high-volume, high-reliability logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74HCT series targets automotive signal integrity applications requiring TTL-compatible inputs, 3-state control, and AEC-Q100 qualification - designed specifically for robustness in electrically noisy, thermally demanding vehicle subsystems.
FAQ
Is 74HCT126PW-Q100 pin-compatible with 74HC126PW-Q100?
Yes - both share identical TSSOP14 (SOT402-1) pinout and function table. The key difference is input threshold: 74HCT126PW-Q100 accepts TTL levels (VIH ≥ 2.0 V), while 74HC126PW-Q100 requires CMOS levels (VIH ≥ 3.15 V at VCC = 4.5 V). Swapping requires verifying upstream driver compatibility.
What is the maximum capacitive load this device can drive reliably?
At VCC = 4.5 V and Tamb = +125 °C, the device maintains ≤36 ns propagation delay into 50 pF loads per output, as verified in Table 7. For heavier loads (>75 pF), transition time increases linearly - design margin requires empirical validation with actual PCB trace capacitance and termination.
Does this part support hot-swap insertion into a live backplane?
No - while input clamp diodes tolerate brief overvoltage, the device lacks powered-off protection or bus-hold circuitry. Hot-swap insertion may cause supply rail disturbance or output contention; use only after system power stabilization and with controlled enable sequencing.
How does the 3-state disable current (IOZ) behave across temperature?
IOZ remains ≤±10 μA from -40 °C to +125 °C at VCC = 5.5 V (Table 9), ensuring minimal leakage into disabled bus segments. This stability supports reliable multi-drop bus arbitration without unintended pull-up/pull-down effects in extended-temperature automotive environments.
74HCT126PW-Q100J Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- 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:
- 6mA, 6mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
74HCT126PW-Q100J FAQ
1.How can I place an order for 74HCT126PW-Q100J through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT126PW-Q100J 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 74HCT126PW-Q100J reliable?
The price and inventory of 74HCT126PW-Q100J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT126PW-Q100J is usually 5 days.
3.What payment methods are accepted for 74HCT126PW-Q100J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT126PW-Q100J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT126PW-Q100J?
74HCT126PW-Q100J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT126PW-Q100J 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 74HCT126PW-Q100J?
For technical support, including 74HCT126PW-Q100J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT126PW-Q100J requirements.
6.How does Aetrix verify that 74HCT126PW-Q100J is sourced from the original manufacturer or authorized distributors?
All 74HCT126PW-Q100J 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 74HCT126PW-Q100J meets industry standards.
7.What is the process for return or replacement of 74HCT126PW-Q100J?
All 74HCT126PW-Q100J units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT126PW-Q100J, 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 74HCT126PW-Q100J part is unused and in its original packaging.
Return procedure for 74HCT126PW-Q100J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74HCT126PW-Q100J Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
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.
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…
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…
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…
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 …
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…
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…
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…
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…
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…
