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Nexperia USA Inc. 74AHCT08D,118
- Part No.:
- 74AHCT08D,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74AHCT08D,118.pdf
- Description:
- IC GATE AND 4CH 2-INP 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:11,867
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Product details
Overview
74AHCT08D,118 from Nexperia is a quad 2-input AND gate IC with TTL-compatible input thresholds, 4.5 V to 5.5 V supply operation, 7.5 ns typical propagation delay at 5 V/50 pF, overvoltage-tolerant inputs up to 5.5 V, and SO14 (SOT108-1) package. It functions as a level-translating combinational logic element in mixed-voltage digital control paths, such as industrial PLC I/O modules interfacing 3.3 V microcontrollers with 5 V peripheral logic.
For engineers reviewing the 74AHCT08D,118 datasheet, 74AHCT08D,118 pinout, 74AHCT08D,118 application, or 74AHCT08D,118 equivalent, key selection criteria include TTL-level input compatibility, guaranteed 125 °C operation, SO14 thermal performance, and verified overvoltage tolerance for robust signal conditioning in legacy 5 V systems.
Technical Context
This device implements four independent AND gates in a single monolithic CMOS structure with Schmitt-trigger action on all inputs-enabling noise immunity in noisy industrial environments. Each gate performs Boolean multiplication (Y = A · B) with no internal latching or state retention.
Its TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V) ensure direct interoperability with legacy 5 V TTL outputs, while overvoltage-tolerant inputs allow safe interfacing with signals up to 5.5 V even when VCC = 4.5 V-critical for mixed-supply board-level translation without external clamping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Quad 2-input AND (Y = A · B per gate); no internal feedback or memory |
| Supply Voltage Range | 4.5 V to 5.5 V; supports stable operation across full industrial 5 V rail tolerance |
| Propagation Delay | 7.5 ns typical (VCC = 5.0 V, CL = 50 pF); enables ≤133 MHz toggle rate in cascaded paths |
| Input Thresholds | VIH ≥ 2.0 V, VIL ≤ 0.8 V (TTL-compatible); eliminates need for level-shifter buffers |
| Operating Temperature | -40 °C to +125 °C; qualified for under-hood and factory-floor embedded control |
| Input Overvoltage Tolerance | Inputs withstand up to 5.5 V regardless of VCC; prevents damage during hot-swap or bus contention |
| ESD Protection | HBM > 2000 V, CDM > 1000 V; meets IEC 61000-4-2 Level 2 system robustness requirements |
Pinout & Package
74AHCT08D,118 uses the SO14 (SOT108-1) plastic small outline package: 14-lead, 3.9 mm body width, 1.27 mm lead pitch, gull-wing leads, JEDEC MS-012 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 9, 12 | Input A (Gate 1–4) | First operand per AND gate; accepts TTL/CMOS logic levels up to 5.5 V |
| 2, 5, 10, 13 | Input B (Gate 1–4) | Second operand per AND gate; Schmitt-triggered for noise rejection |
| 3, 6, 8, 11 | Output Y (Gate 1–4) | Active-HIGH AND result; drives 8 mA sink/source at VOH/VOL specs |
| 7 | GND | Digital ground reference; must be low-impedance for noise-free switching |
| 14 | VCC | Positive supply (4.5–5.5 V); decoupling capacitor required within 10 mm |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | VIH ≥ 2.0 V, VIL ≤ 0.8 V at 5 V supply-direct drop-in replacement for 74LS08 in legacy designs |
| Overvoltage-tolerant inputs | Withstand 5.5 V input signals even at VCC = 4.5 V-enables safe mixed-rail signal routing |
| Schmitt-trigger inputs | Hysteresis ≥ 0.3 V typical-rejects <100 mV noise spikes on slow-rising control lines |
| Industrial temperature range | Specified from -40 °C to +125 °C-supports extended ambient operation without derating |
| Low dynamic power | CPD = 12.0 pF-limits switching power to <1.5 mW per gate at 10 MHz, 5 V |
Applications
| Programmable Logic Controller (PLC) Input Conditioning | Industrial Sensor Interface Module |
|---|---|
Use Scenario: Isolating and validating 5 V discrete sensor inputs (e.g., limit switches, photoelectric sensors) before feeding into a 3.3 V FPGA-based controller. IC Role / Device Role / Timing Role: Signal-level AND gate performing enable validation-only passing high pulses when both sensor and system-enable signals are asserted. Use Value: Eliminates need for discrete level shifters by accepting 5 V inputs directly while driving 3.3 V–compatible loads via controlled VOL/VOH. | Use Scenario: Combining multiple fault indicators (motor overtemp, vibration alarm, power loss) into a single aggregated "system fault" output for HMI display. IC Role / Device Role / Timing Role: Combinational logic aggregator-four independent AND gates reduce eight fault signals into two priority-encoded outputs. Use Value: Reduces PCB real estate vs. discrete transistor logic; Schmitt inputs prevent chatter-induced false alarms on noisy sensor lines. |
| Legacy 5 V Microcontroller Bus Control | Test Equipment Digital Pattern Generator |
Use Scenario: Enabling address/data strobes in retro-computing hardware using Z80 or 8085 CPUs operating at 5 V. IC Role / Device Role / Timing Role: Synchronous gating element-ANDing clock edges with chip-select signals to generate precise timing windows for memory access. Use Value: Propagation delay variation ≤1.5 ns across temperature ensures deterministic setup/hold margins in 4–6 MHz bus cycles. | Use Scenario: Generating synchronized test vectors for ASIC validation, where multiple stimulus channels must activate only when master trigger and channel-enable bits align. IC Role / Device Role / Timing Role: Deterministic pattern combiner-four gates produce four independent 2-bit AND outputs for parallel stimulus generation. Use Value: Guaranteed 125 °C rating allows use in thermally constrained ATE fixtures; SO14 package supports automated optical inspection. |
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 |
|---|---|---|---|
| 74AHC08D,118 | CMOS-level inputs (VIH = 3.85 V @ 5.5 V); wider 2.0–5.5 V supply range | Better suited for 3.3 V–5.5 V mixed-supply systems requiring higher noise margin | Select when interfacing with modern low-voltage MCUs and needing lower ICC at 3.3 V |
| SN74LS08DR | Bipolar TTL process; VIH = 2.0 V, VIL = 0.8 V; 4.75–5.25 V only; higher ICC (~10 mA/gate) | Compatible with vintage TTL logic families but lacks overvoltage tolerance and 125 °C rating | Select only for strict pin- and waveform-compatible replacement in existing LS designs |
Compared with 74AHC08D,118 and SN74LS08DR, the 74AHCT08D,118 uniquely balances TTL input compatibility, 125 °C operation, and overvoltage safety-making it optimal for upgrading legacy 5 V systems without redesigning interface circuitry.
Availability
74AHCT08D,118 is available at Aetrix Electronics and suitable for industrial control systems, test equipment design, legacy system upgrades, and sensor interface modules requiring stable component supply across extended temperature ranges.
Supply support for 74AHCT08D,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 focused on essential efficiency technologies, delivering high-performance logic, analog, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74AHCT series targets industrial and legacy-system designers needing TTL-compatible, high-reliability logic with extended temperature and overvoltage resilience-specifically engineered for robustness in harsh electrical environments.
FAQ
Is 74AHCT08D,118 pin-compatible with standard 74LS08 devices?
Yes-74AHCT08D,118 uses the same SO14 pinout as 74LS08, with identical terminal numbering and function mapping (inputs on pins 1/2, 4/5, 9/10, 12/13; outputs on 3/6/8/11; GND on 7; VCC on 14). Electrical compatibility is confirmed for 5 V operation, though 74AHCT08D,118 offers superior noise immunity and 125 °C rating.
Can 74AHCT08D,118 operate reliably at 3.3 V supply?
No-74AHCT08D,118 is specified only for 4.5 V to 5.5 V operation. Its TTL input thresholds require minimum 4.5 V VCC to guarantee VIH ≥ 2.0 V and proper logic recognition. For 3.3 V systems, use 74AHC08D,118 instead, which supports 2.0–5.5 V and has CMOS-level inputs.
What is the maximum capacitive load this device can drive?
74AHCT08D,118 is characterized up to 50 pF load capacitance per output, with 7.5 ns typical propagation delay at 5 V. Driving >50 pF increases delay nonlinearly and may cause ringing; for >100 pF loads, add series termination or buffer stages per Nexperia's application note AN10654.
Does the SO14 package include thermal pad or exposed die attach?
No-the SO14 (SOT108-1) package used in 74AHCT08D,118 has no thermal pad or exposed metal underside. Thermal dissipation relies solely on leadframe conduction through PCB copper; for high-duty-cycle applications, use ≥2 cm² of 2-oz copper pour connected to pin 7 (GND) and pin 14 (VCC) for effective heat spreading.
74AHCT08D,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AHCT
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- 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-SO
74AHCT08D,118 FAQ
1.How can I place an order for 74AHCT08D,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT08D,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 74AHCT08D,118 reliable?
The price and inventory of 74AHCT08D,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT08D,118 is usually 5 days.
3.What payment methods are accepted for 74AHCT08D,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT08D,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT08D,118?
74AHCT08D,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT08D,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 74AHCT08D,118?
For technical support, including 74AHCT08D,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT08D,118 requirements.
6.How does Aetrix verify that 74AHCT08D,118 is sourced from the original manufacturer or authorized distributors?
All 74AHCT08D,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 74AHCT08D,118 meets industry standards.
7.What is the process for return or replacement of 74AHCT08D,118?
All 74AHCT08D,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT08D,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 74AHCT08D,118 part is unused and in its original packaging.
Return procedure for 74AHCT08D,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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