My Inquiry
My Account
Nexperia USA Inc. 74AHCT2G126DP,125
- Part No.:
- 74AHCT2G126DP,125
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
74AHCT2G126DP,125.pdf
- Description:
- IC BUF NON-INVERT 5.5V 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,526
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
74AHCT2G126DP,125 from Nexperia is a dual 3-state buffer/line driver with TTL-compatible inputs and overvoltage-tolerant inputs up to 5.5 V, operating across 4.5–5.5 V supply range, delivering 8 ns typical propagation delay at 5 V/50 pF, and rated for -40 °C to +125 °C industrial temperature range - used in bidirectional bus interfacing and mixed-voltage level translation between 3.3 V and 5 V domains.
For engineers reviewing the 74AHCT2G126DP,125 datasheet, 74AHCT2G126DP,125 pinout, 74AHCT2G126DP,125 application, or 74AHCT2G126DP,125 equivalent, key selection criteria include TTL-level input compatibility, 3-state output control timing (enable/disable < 10 ns), symmetrical output drive strength (±8 mA), and TSSOP8 package suitability for high-density PCB layouts.
Technical Context
The 74AHCT2G126DP,125 implements two independent non-inverting buffers, each with active-HIGH output enable (1OE, 2OE) controlling high-impedance state on respective outputs (1Y, 2Y). Input logic thresholds are fixed at TTL levels (VIH = 2.0 V min, VIL = 0.8 V max), ensuring compatibility with legacy 5 V microcontrollers and FPGAs.
Its overvoltage-tolerant inputs accept up to 5.5 V regardless of VCC, enabling safe interfacing between higher-voltage peripherals and lower-supply logic. The device uses CMOS silicon with ESD protection exceeding 2000 V HBM and 1000 V CDM, and latch-up immunity >100 mA per JESD78 Class II Level A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5–5.5 V - supports stable operation across standard 5 V rail tolerances and enables direct connection to 5 V systems without level-shifting. |
| Input Logic Type | TTL-compatible - VIH ≥ 2.0 V, VIL ≤ 0.8 V - ensures reliable recognition of legacy 5 V logic signals even when powered from 5 V. |
| Propagation Delay | 4.8 ns typ @ 5 V/50 pF - enables use in high-speed data paths up to ~100 MHz clock rates with minimal timing skew. |
| Output Drive | ±8 mA @ VOH/VOL - provides sufficient current to drive multiple LSTTL loads or moderate capacitive bus lines (≤50 pF). |
| Operating Temperature | -40 °C to +125 °C - qualified for under-hood automotive modules, industrial PLC I/O, and extended-range embedded controllers. |
| Input Overvoltage Tolerance | Up to 5.5 V - allows safe connection of 5 V signals into systems powered at 3.3 V or 5 V without external clamping diodes. |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - meets robustness requirements for automated assembly and field-replaceable module handling. |
Pinout & Package
TSSOP8 package (SOT505-2): plastic thin shrink small outline, 8-lead, 3 mm body width, 0.65 mm pitch, exposed pad not present - optimized for thermal performance and reflow compatibility in space-constrained applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7 (1OE, 2OE) | Output Enable Input | Active-HIGH control: drives corresponding output (1Y or 2Y) into high-impedance state when LOW; enables concurrent bus sharing. |
| 2, 5 (1A, 2A) | Data Input | Non-inverting input for respective buffer channel; accepts TTL or overvoltage signals up to 5.5 V independent of VCC. |
| 3, 6 (2Y, 1Y) | Data Output | Buffered, 3-state output; sinks or sources up to ±8 mA; enters high-Z when OE is LOW - essential for bidirectional bus arbitration. |
| 4 | GND | Ground reference (0 V) - must be low-impedance connection to minimize noise coupling and ensure stable logic thresholds. |
| 8 | VCC | Positive supply (4.5–5.5 V) - requires local 100 nF ceramic decoupling within 5 mm of pin to suppress switching transients. |
Key Features
| Feature | Design Value |
|---|---|
| Symmetrical output impedance | Ensures matched rise/fall times (<10% skew) for clean signal integrity on shared buses and differential-like routing. |
| Overvoltage-tolerant inputs | Accepts 0–5.5 V input signals regardless of VCC setting - eliminates need for external level translators in mixed-voltage systems. |
| Wide temperature range | -40 °C to +125 °C operation - validated for deployment in engine control units, motor drives, and outdoor industrial gateways. |
| Low dynamic power dissipation | CPD = 10 pF per buffer - limits switching power to <100 μW at 1 MHz, supporting energy-efficient always-on interfaces. |
| Latch-up immunity | Exceeds 100 mA per JESD78 Class II Level A - prevents destructive parasitic thyristor activation during transient overcurrent events. |
Applications
| Industrial Bus Interface | Legacy Microcontroller Expansion |
|---|---|
|
Use Scenario: Isolating and driving a shared 8-bit parallel bus between a modern 3.3 V FPGA and legacy 5 V peripheral ICs. IC Role / Device Role / Timing Role: Dual 3-state buffer providing direction-controlled signal pass-through with simultaneous enable/disable coordination. Use Value: Eliminates bus contention via precise OE timing (ten/tdis < 10 ns), while overvoltage tolerance prevents damage from 5 V signals applied to 3.3 V domain. |
Use Scenario: Expanding GPIO count of an 8051-based controller by connecting additional I/O expanders or display drivers. IC Role / Device Role / Timing Role: Level-translating buffer stage that converts 5 V TTL outputs to compatible drive strength for downstream CMOS loads. Use Value: TTL input thresholds guarantee reliable recognition of 8051's 5 V outputs; ±8 mA drive supports fan-out of 10 LSTTL loads. |
| Automotive Sensor Hub Interface | Programmable Logic Interconnect |
|
Use Scenario: Aggregating analog sensor ADC outputs and digital status flags onto a centralized diagnostic bus in an engine control module. IC Role / Device Role / Timing Role: Signal conditioning and isolation buffer with high-temp reliability and ESD-hardened I/O for under-hood placement. Use Value: -40 °C to +125 °C rating and >2000 V HBM ESD withstand ensure uninterrupted operation in harsh thermal/electrical environments. |
Use Scenario: Interfacing between CPLD configuration logic and external memory or communication peripherals in a compact embedded system. IC Role / Device Role / Timing Role: Timing-critical bus driver managing address/data strobes with sub-10 ns enable/disable transitions. Use Value: Propagation delay consistency (tpd = 4.8 ns typ) and matched tPLH/tPHL reduce setup/hold margin uncertainty in synchronous designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74AHCT2G126DC | VSSOP8 package (2.3 mm width); identical electrical specs and pinout mapping but smaller footprint and higher thermal resistance. | Better suited for ultra-dense layouts where board area is constrained, but requires tighter reflow profile control due to finer pitch (0.5 mm). | Select when PCB real estate is critical and thermal load is light; verify solder paste volume and stencil aperture for 0.5 mm pitch. |
| SN74LVC2G126DBVR | CMOS input thresholds (VIH = 2.0 V min at VCC = 3.3 V); operates down to 1.65 V; lower drive (±24 mA) but higher ICC leakage at 125 °C. | Optimized for 1.8 V/3.3 V systems only; lacks overvoltage tolerance - requires external protection if interfacing with 5 V signals. | Choose for pure low-voltage designs needing wider VCC range; avoid in mixed-voltage or 5 V-tolerant applications. |
Compared with 74AHCT2G126DC, the 74AHCT2G126DP,125 offers better thermal dissipation in TSSOP8 and easier reworkability, while SN74LVC2G126DBVR trades overvoltage safety for lower-voltage flexibility - making DP the preferred choice for ruggedized 5 V interface layers.
Availability
74AHCT2G126DP,125 is available at Aetrix Electronics and suitable for industrial bus interface, automotive sensor hub interconnect, programmable logic interconnect, and legacy microcontroller expansion requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74AHCT2G126DP,125 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 focused on high-volume, high-reliability logic, discrete, and MOSFET solutions - delivering industry-leading efficiency, precision, and robustness for automotive, industrial, and consumer applications.
The 74AHCT series targets industrial and automotive-grade level translation and buffering, emphasizing TTL compatibility, wide temperature operation, and system-level ESD/latch-up resilience in cost-sensitive high-volume designs.
FAQ
Can 74AHCT2G126DP,125 operate reliably at 3.3 V supply?
No - the 74AHCT variant requires minimum 4.5 V VCC for guaranteed TTL input threshold compliance (VIH ≥ 2.0 V). At 3.3 V, input recognition fails; use 74AHC2G126DP instead for CMOS-level compatibility down to 2.0 V.
What is the maximum capacitive load this device can drive while maintaining timing specs?
The datasheet specifies timing parameters up to 50 pF load capacitance. Driving >50 pF increases propagation delay nonlinearly and may violate setup/hold margins; for heavier loads, add series termination or use a higher-drive buffer like 74AHCT541.
Is the TSSOP8 package (SOT505-2) lead-free and RoHS-compliant?
Yes - Nexperia confirms SOT505-2 packaging for 74AHCT2G126DP,125 meets RoHS Directive 2011/65/EU and REACH SVHC requirements, with lead-free matte tin terminations and halogen-free molding compound.
How does the 3-state enable timing affect bus arbitration in multi-driver systems?
With ten = 5.1 ns and tdis = 6.1 ns max at 5 V, the 74AHCT2G126DP,125 ensures rapid, glitch-free bus release - critical when coordinating with other drivers (e.g., microcontroller GPIO or transceivers) to prevent short-duration contention spikes.
74AHCT2G126DP,125 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AHCT
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 8mA, 8mA
- Voltage - Supply:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
74AHCT2G126DP,125 FAQ
1.How can I place an order for 74AHCT2G126DP,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT2G126DP,125 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 74AHCT2G126DP,125 reliable?
The price and inventory of 74AHCT2G126DP,125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT2G126DP,125 is usually 5 days.
3.What payment methods are accepted for 74AHCT2G126DP,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT2G126DP,125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT2G126DP,125?
74AHCT2G126DP,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT2G126DP,125 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 74AHCT2G126DP,125?
For technical support, including 74AHCT2G126DP,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT2G126DP,125 requirements.
6.How does Aetrix verify that 74AHCT2G126DP,125 is sourced from the original manufacturer or authorized distributors?
All 74AHCT2G126DP,125 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 74AHCT2G126DP,125 meets industry standards.
7.What is the process for return or replacement of 74AHCT2G126DP,125?
All 74AHCT2G126DP,125 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT2G126DP,125, 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 74AHCT2G126DP,125 part is unused and in its original packaging.
Return procedure for 74AHCT2G126DP,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74AHCT2G126DP,125 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…
