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Nexperia USA Inc. 74HCT2G125DC-Q100H
- Part No.:
- 74HCT2G125DC-Q100H
- Manufacturer:
- Nexperia USA Inc.
- Package:
- 8-VFSOP (0.091", 2.30mm Width)
- Datasheet:
-
74HCT2G125DC-Q100H.pdf
- Description:
- IC BUF NON-INVERT 5.5V 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,470
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Product details
Overview
74HCT2G125DC-Q100 from Nexperia is a dual 3-state buffer/line driver with TTL-compatible inputs, designed for bidirectional bus interfacing and signal isolation in automotive control modules. It operates from 4.5 V to 5.5 V, delivers ±6 mA output drive at VCC = 4.5 V, supports -40 °C to +125 °C ambient range, and features active-low enable inputs (1OE, 2OE) for independent channel control - used in engine control unit (ECU) diagnostic data routing.
For engineers reviewing the 74HCT2G125DC-Q100 datasheet, 74HCT2G125DC-Q100 pinout, 74HCT2G125DC-Q100 application, or 74HCT2G125DC-Q100 equivalent, key selection criteria include TTL-level input compatibility, AEC-Q100 Grade 1 qualification, VSSOP8 package footprint, 3-state timing (tpd ≤ 31 ns, ten ≤ 35 ns at VCC = 4.5 V), and automotive-grade ESD robustness (HBM > 2000 V).
Technical Context
This device implements two independent non-inverting buffers, each with an active-low 3-state output enable (1OE, 2OE). Input clamping diodes allow safe interface to voltages exceeding VCC when used with current-limiting resistors. The logic function follows standard truth table behavior: output equals input when OE = LOW; output is high-impedance when OE = HIGH.
It uses standard CMOS silicon process with TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V), enabling direct connection to legacy 5 V TTL logic without level translation. Static and dynamic characteristics are fully specified across -40 °C to +125 °C, supporting under-hood automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with standard 5 V automotive power rails and stable operation across battery voltage fluctuations. |
| Input Logic Type | TTL-level - accepts standard 5 V TTL input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V), eliminating need for external level shifters. |
| Output Drive | ±6.0 mA at VCC = 4.5 V - sufficient to drive 50 pF loads with <31 ns propagation delay, suitable for medium-speed bus buffering. |
| Operating Temperature | -40 °C to +125 °C - qualified for engine compartment and transmission control applications per AEC-Q100 Grade 1. |
| Propagation Delay | 15 ns (typ), 31 ns (max) at VCC = 4.5 V, CL = 50 pF - enables reliable timing in CAN/LIN subsystem signal conditioning and sensor data multiplexing. |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - meets automotive system-level ESD immunity requirements without additional protection circuitry. |
| Power Dissipation | 250 mW max at Tamb ≤ 99 °C (VSSOP8) - supports compact placement in thermally constrained ECUs with linear derating above 99 °C. |
Pinout & Package
VSSOP8 plastic very thin shrink small outline package (SOT765-1); 8 leads; body width 2.3 mm; pin 1 indicator located below marking code in lower-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7 | 1OE, 2OE | Active-low output enable inputs - independently disable each buffer's output to high-impedance state for bus sharing. |
| 2, 5 | 1A, 2A | Data inputs - accept TTL-level signals; internal clamp diodes permit overvoltage tolerance with series resistors. |
| 3, 6 | 1Y, 2Y | Non-inverting buffered outputs - deliver rail-to-rail CMOS output swing with ±6 mA drive capability. |
| 4 | GND | Ground reference - common return path for all inputs, outputs, and supply current; must be low-impedance for noise immunity. |
| 8 | VCC | Positive supply - powers both buffers and enable logic; decoupling capacitor (100 nF) required within 5 mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use from -40 °C to +125 °C ambient, including temperature cycling, humidity, and lifetime reliability testing. |
| Input clamp diodes | Enable safe interface to signals up to VCC + 0.5 V using external current-limiting resistors - simplifies mixed-voltage board design. |
| High noise immunity | Typical noise margin > 1.2 V at VCC = 4.5 V - suppresses coupling from ignition systems and motor drivers in vehicle harnesses. |
| Latch-up immunity | Exceeds 100 mA per JESD78 Class II Level B - prevents destructive latch-up during load dump or ground bounce events. |
| Low static current | ICC ≤ 20 μA max at VCC = 5.5 V - minimizes quiescent power in always-on vehicle modules such as body controllers. |
Applications
| Engine Control Unit (ECU) Diagnostic Bus | Body Control Module (BCM) Sensor Multiplexer |
|---|---|
Use Scenario: Isolating diagnostic communication lines between microcontroller UART and OBD-II connector while enabling/disabling based on ignition state. IC Role / Device Role / Timing Role: Dual 3-state buffer provides direction-controlled signal pass-through with independent enable control per channel. Use Value: Eliminates contention during firmware updates by placing unused channel in high-Z; meets ISO 15765-4 timing with <31 ns tpd. |
Use Scenario: Consolidating analog sensor readings (e.g., door lock status, seat position) onto shared I²C or LIN bus under microcontroller arbitration. IC Role / Device Role / Timing Role: Signal isolator and level translator between mixed-voltage sensors and 5 V controller bus. Use Value: Clamp diodes allow direct connection to 12 V switch inputs via 10 kΩ resistors; TTL inputs interface cleanly with legacy 5 V MCU GPIO. |
| Transmission Control Unit (TCU) Gear Selector Interface | Advanced Driver Assistance Systems (ADAS) Camera Power Sequencing |
Use Scenario: Buffering gear position encoder signals to prevent back-driving into safety-critical MCU pins during fault conditions. IC Role / Device Role / Timing Role: Fail-safe signal conditioner that disables output on command to isolate faulty sensor paths. Use Value: Independent 1OE/2OE pins allow per-channel shutdown during ASIL-B diagnostics; AEC-Q100 Grade 1 ensures reliability in transmission oil environment. |
Use Scenario: Enabling camera module power rails only after host processor confirms valid boot sequence and thermal readiness. IC Role / Device Role / Timing Role: Logic-level translator and timing-controlled gate for 5 V camera supply enable line. Use Value: 125 °C rating supports placement near hot camera SoCs; <35 ns enable time synchronizes with processor reset release timing. |
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 |
|---|---|---|---|
| 74HCT2G125DP-Q100 | TSSOP8 package (3 mm body width vs. VSSOP8's 2.3 mm); identical electrical specs and AEC-Q100 qualification. | Requires larger PCB footprint; better thermal dissipation (Ptot derates at 96 °C vs. 99 °C for VSSOP8). | Select when board layout allows TSSOP8 and higher thermal margin is needed in high-power-density modules. |
| SN74LVC2G125QDCURQ1 | Lower VCC range (1.65–5.5 V); LVTTL inputs instead of TTL; 32 mA drive vs. 6 mA; not qualified to AEC-Q100 Grade 1. | Supports 1.8 V/3.3 V logic domains but lacks full automotive temperature and reliability validation. | Use only in non-safety-critical infotainment subsystems where extended voltage flexibility outweighs AEC-Q100 requirement. |
Compared with 74HCT2G125DP-Q100, the DC variant saves 0.7 mm board width but trades 3 °C earlier thermal derating; versus SN74LVC2G125QDCURQ1, it sacrifices voltage scalability and drive strength for guaranteed automotive qualification and deterministic TTL interface behavior.
Availability
74HCT2G125DC-Q100 is available at Aetrix Electronics and suitable for engine control units, body control modules, and transmission control units requiring stable component supply across automotive production lifecycles.
Supply support for 74HCT2G125DC-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 focused on essential efficiency technologies, delivering high-performance logic, discrete, and MOSFET solutions optimized for automotive, industrial, and mobile markets.
This device belongs to Nexperia's automotive-qualified logic portfolio, engineered specifically for robust signal integrity and long-term reliability in harsh vehicular environments - targeting ECU, BCM, and ADAS subsystems.
FAQ
What is the maximum output current per channel for 74HCT2G125DC-Q100?
The device delivers ±6.0 mA output current per channel at VCC = 4.5 V, measured under standard test conditions (VOH/VOL defined at IO = ±6.0 mA). This drive strength supports 50 pF capacitive loads with sub-31 ns propagation delay and is validated across the full -40 °C to +125 °C operating range.
Does 74HCT2G125DC-Q100 support 3.3 V logic inputs?
No - this part has TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V at VCC = 4.5–5.5 V), optimized for 5 V systems. For 3.3 V logic interfacing, consider the 74LVC2G125 variant, though it lacks AEC-Q100 Grade 1 qualification and automotive temperature range.
Can the 74HCT2G125DC-Q100 be used with supply voltages below 4.5 V?
No - the HCT version is specified only for 4.5 V to 5.5 V operation per JEDEC JESD7A. Using VCC < 4.5 V risks undefined input thresholds and degraded noise margins; for 2.0–6.0 V operation, select the 74HC2G125DC-Q100 variant instead.
How is pin 1 identified on the VSSOP8 package?
Pin 1 is marked by a small indentation or beveled corner on the package edge, located in the lower-left corner relative to the top-side marking code (T25 for this part). The pin numbering follows standard counter-clockwise order: 1OE (pin 1), VCC (pin 2), 1A (pin 3), 2OE (pin 4), 2Y (pin 5), 1Y (pin 6), GND (pin 7), 2A (pin 8).
74HCT2G125DC-Q100H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 8-VFSOP (0.091", 2.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 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:
- 8-VSSOP
74HCT2G125DC-Q100H FAQ
1.How can I place an order for 74HCT2G125DC-Q100H through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT2G125DC-Q100H 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 74HCT2G125DC-Q100H reliable?
The price and inventory of 74HCT2G125DC-Q100H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT2G125DC-Q100H is usually 5 days.
3.What payment methods are accepted for 74HCT2G125DC-Q100H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT2G125DC-Q100H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT2G125DC-Q100H?
74HCT2G125DC-Q100H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT2G125DC-Q100H 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 74HCT2G125DC-Q100H?
For technical support, including 74HCT2G125DC-Q100H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT2G125DC-Q100H requirements.
6.How does Aetrix verify that 74HCT2G125DC-Q100H is sourced from the original manufacturer or authorized distributors?
All 74HCT2G125DC-Q100H 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 74HCT2G125DC-Q100H meets industry standards.
7.What is the process for return or replacement of 74HCT2G125DC-Q100H?
All 74HCT2G125DC-Q100H units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT2G125DC-Q100H, 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 74HCT2G125DC-Q100H part is unused and in its original packaging.
Return procedure for 74HCT2G125DC-Q100H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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