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Nexperia USA Inc. 74AHCT08BQ,115
- Part No.:
- 74AHCT08BQ,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Gates and Inverters
- Package:
- 14-VFQFN Exposed Pad
- Datasheet:
-
74AHCT08BQ,115.pdf
- Description:
- IC GATE AND 4CH 2-INP 14DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,858
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Product details
Overview
74AHCT08BQ,115 from Nexperia is a quad 2-input AND gate IC with TTL-compatible input thresholds, operating from 4.5 V to 5.5 V supply, featuring overvoltage-tolerant inputs up to 5.5 V, 7.5 ns typical propagation delay at 5 V/50 pF, and DHVQFN14 (SOT762-1) package for high-density PCB layouts in industrial control logic and level translation applications.
For engineers reviewing the 74AHCT08BQ,115 datasheet, 74AHCT08BQ,115 pinout, 74AHCT08BQ,115 application, or 74AHCT08BQ,115 equivalent, this device serves as a robust, temperature-stable (–40 °C to +125 °C) logic gate for mixed-voltage interface design, timing-critical combinational logic, and noise-immune digital signal routing where input compatibility with legacy TTL systems is required.
Technical Context
The 74AHCT08BQ,115 implements four independent AND gates with Schmitt-trigger action on all inputs, enabling reliable switching in noisy environments. Its TTL-level input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V) ensure direct compatibility with standard 5 V TTL outputs without level-shifting circuitry.
Each gate delivers rail-to-rail CMOS output drive (VOH ≥ 3.7 V, VOL ≤ 0.55 V at IO = ±8 mA), supports 14-terminal DHVQFN thermal-enhanced packaging, and maintains balanced propagation delays across all channels - critical for synchronous logic trees and parallel data path conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Quad 2-input AND gate - provides four independent Boolean AND operations per package |
| Supply Voltage Range | 4.5 V to 5.5 V - ensures stable operation across standard 5 V industrial rails with ±5% tolerance |
| Input Threshold Type | TTL-compatible - VIH ≥ 2.0 V, VIL ≤ 0.8 V enables direct interfacing with legacy 5 V TTL outputs |
| Propagation Delay | 7.5 ns max at VCC = 5 V, CL = 50 pF - guarantees sub-10 ns timing for high-speed combinational logic paths |
| Operating Temperature | –40 °C to +125 °C - qualified for extended industrial and under-hood embedded applications |
| Input Overvoltage Tolerance | Up to 5.5 V - allows safe use in mixed-voltage domains without external clamping diodes |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - meets JEDEC JS-001/JS-002 Class 2/C3 for robust board-level handling |
Pinout & Package
DHVQFN14 (SOT762-1) package: 2.5 × 3.0 × 0.85 mm body, leadless, thermally enhanced, with exposed die pad (non-soldered by default), 0.5 mm pitch, 14 terminals, pin 1 index area marked on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A, 2A, 3A, 4A | Data Input A | Four independent first inputs per gate; TTL-compatible threshold, overvoltage tolerant |
| 1B, 2B, 3B, 4B | Data Input B | Four independent second inputs per gate; identical electrical specs to A inputs |
| 1Y, 2Y, 3Y, 4Y | Data Output | Four CMOS push-pull outputs; capable of sourcing/sinking ±8 mA at full rail swing |
| 7 | GND | Ground reference (0 V); must be connected to system ground plane for noise immunity |
| 14 | VCC | Positive supply rail (4.5–5.5 V); requires local 100 nF decoupling near package |
Key Features
| Feature | Design Value |
|---|---|
| TTL-level input compatibility | Enables plug-in replacement of legacy 74LS08 in 5 V systems without redesigning input drivers |
| Overvoltage-tolerant inputs | Accepts up to 5.5 V regardless of VCC, simplifying inter-IC communication across voltage domains |
| Schmitt-trigger inputs | Provides hysteresis (typ. 0.3 V) to reject noise on slow or noisy signal edges |
| Balanced propagation delays | Ensures matched tPLH/tPHL across all four gates - critical for parallel bus gating and clock domain alignment |
| Industrial temperature range | Validated operation from –40 °C to +125 °C supports deployment in motor drives and power converters |
Applications
| Industrial PLC I/O Conditioning | Legacy TTL-to-CMOS Interface |
|---|---|
Use Scenario: Signal validation and enable gating for discrete sensor inputs in programmable logic controllers. IC Role / Device Role / Timing Role: Quad AND gate performing synchronized enable masking of 4-channel digital inputs before FPGA capture. Use Value: Eliminates need for discrete pull-up networks and external level shifters while maintaining <10 ns timing skew across channels. | Use Scenario: Interfacing 74LS-series TTL outputs to modern 5 V CMOS microcontrollers with strict input voltage margins. IC Role / Device Role / Timing Role: Logic-level translator and noise filter between legacy peripheral controllers and new host processors. Use Value: Direct TTL-compatible input thresholds and Schmitt-trigger action prevent metastability and false triggering on marginal signals. |
| Motor Drive Enable Sequencing | Power Supply Supervisory Logic |
Use Scenario: Coordinating gate-driver enable signals in multi-phase inverter modules requiring simultaneous activation. IC Role / Device Role / Timing Role: Synchronizing four independent PWM enable paths using common safety interlock and ready signals. Use Value: Matched propagation delays (<1 ns inter-gate skew) ensure deterministic turn-on timing across power stages. | Use Scenario: Generating system reset hold-off and brown-out detection logic in embedded power management units. IC Role / Device Role / Timing Role: Combining undervoltage lockout (UVLO), watchdog timeout, and manual reset signals into a single clean reset assertion. Use Value: Overvoltage-tolerant inputs accept direct connection to unregulated auxiliary rails, reducing external component count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 2-input AND gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74AHCT08PW,118 | TSSOP14 package (4.4 mm width); higher thermal resistance (θJA = 137 K/W vs. 98 K/W) | Less suitable for high-power-density designs; requires larger PCB footprint | Select when board assembly uses standard TSSOP reflow profiles and thermal budget permits |
| SN74AHCT08DR | SOIC-14 package (3.9 mm width); lower ESD rating (HBM = 2 kV vs. 2.5 kV typical) | Compatible with through-hole prototyping but lacks DHVQFN's thermal performance | Choose for legacy board upgrades or low-volume hand-soldered development |
Compared with 74AHCT08PW,118 and SN74AHCT08DR, the 74AHCT08BQ,115 offers superior thermal dissipation in space-constrained layouts and tighter timing consistency due to its symmetric DHVQFN layout - making it optimal for high-reliability industrial control modules where thermal stability and channel matching are critical.
Availability
74AHCT08BQ,115 is available at Aetrix Electronics and suitable for industrial PLC I/O conditioning, motor drive enable sequencing, and power supply supervisory logic requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74AHCT08BQ,115 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, analog, and MOSFET solutions, with leadership in automotive-qualified and industrial-grade components.
The 74AHCT08BQ,115 belongs to Nexperia's AHCT logic family, engineered specifically for seamless integration between legacy TTL systems and modern CMOS platforms in harsh-environment industrial applications.
FAQ
What is the maximum allowable input voltage on any pin of the 74AHCT08BQ,115?
The absolute maximum input voltage is +7.0 V referenced to GND, per IEC 60134 limiting values. However, sustained operation above 5.5 V violates recommended conditions and risks reliability degradation. The device's overvoltage-tolerant inputs safely accept up to 5.5 V regardless of VCC, enabling mixed-voltage interfacing without external protection.
Can the 74AHCT08BQ,115 operate reliably at 3.3 V supply?
No - the 74AHCT08BQ,115 is TTL-input optimized and specified only for VCC = 4.5 V to 5.5 V. At 3.3 V, input thresholds become undefined and output drive falls outside guaranteed specifications. For 3.3 V systems, use the pin-compatible 74AHC08BQ,115 variant, which features CMOS-level inputs and 2.0–5.5 V operation.
Is the exposed thermal pad on the DHVQFN package electrically connected?
No - the exposed pad (terminal 7 in SOT762-1) is not electrically connected to GND or any internal node. Per datasheet note [1], it has no electrical or mechanical requirement to be soldered. If soldered, it must remain floating or be tied to GND to avoid unintended coupling or thermal stress.
How does the Schmitt-trigger action improve noise immunity in this device?
The Schmitt-trigger inputs provide hysteresis (~0.3 V typical) between rising and falling thresholds, preventing multiple transitions on slow-rising or noisy signals. This eliminates contact bounce artifacts in switch inputs and reduces susceptibility to crosstalk in dense PCB layouts - especially valuable in industrial environments with high EMI.
74AHCT08BQ,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AHCT
- Package/Case:
- 14-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- AND Gate
- Number of Circuits:
- 4
- Number of Inputs:
- 2
- Features:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Max):
- 2 µA
- Current - Output High, Low:
- 8mA, 8mA
- Input Logic Level - Low:
- 0.8V
- Input Logic Level - High:
- 2V
- Max Propagation Delay @ V, Max CL:
- 7.9ns @ 5V, 50pF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-DHVQFN (2.5x3)
74AHCT08BQ,115 FAQ
1.How can I place an order for 74AHCT08BQ,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT08BQ,115 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 74AHCT08BQ,115 reliable?
The price and inventory of 74AHCT08BQ,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT08BQ,115 is usually 5 days.
3.What payment methods are accepted for 74AHCT08BQ,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT08BQ,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT08BQ,115?
74AHCT08BQ,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT08BQ,115 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 74AHCT08BQ,115?
For technical support, including 74AHCT08BQ,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT08BQ,115 requirements.
6.How does Aetrix verify that 74AHCT08BQ,115 is sourced from the original manufacturer or authorized distributors?
All 74AHCT08BQ,115 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 74AHCT08BQ,115 meets industry standards.
7.What is the process for return or replacement of 74AHCT08BQ,115?
All 74AHCT08BQ,115 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT08BQ,115, 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 74AHCT08BQ,115 part is unused and in its original packaging.
Return procedure for 74AHCT08BQ,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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