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Nexperia USA Inc. 74HCT08DB,118
- Part No.:
- 74HCT08DB,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Gates and Inverters
- Package:
- 14-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74HCT08DB,118.pdf
- Description:
- IC GATE AND 4CH 2-INP 14SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,027
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Product details
Overview
74HCT08DB,118 from Nexperia is a quad 2-input AND gate logic IC with TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 5 V), 4.5–5.5 V supply range, and SO14 (SOT337-1) package. It delivers propagation delay of 14–36 ns across temperature (−40 °C to +125 °C) and supports industrial control signal routing, bus gating, and enable logic in microcontroller peripheral interfaces.
For engineers reviewing the 74HCT08DB,118 datasheet, 74HCT08DB,118 pinout, 74HCT08DB,118 application, or 74HCT08DB,118 equivalent, this page provides verified pin functions, real-world timing behavior under 50 pF load, thermal derating curves for SO14, TTL-level interface compatibility, and validated alternatives for logic-level translation and board-space-constrained designs.
Technical Context
This device implements four independent AND gates in a single monolithic CMOS structure with input clamp diodes enabling safe interfacing to voltages exceeding VCC when current-limiting resistors are used. Its TTL-compatible inputs accept standard 5 V logic levels while driving CMOS loads with VOH ≥ 3.98 V and VOL ≤ 0.26 V at IO = ±4 mA.
The SO14 package (SOT337-1) features 14 leads, 3.9 mm body width, and thermal characteristics requiring linear power derating above +100 °C (10.1 mW/K). Dynamic performance is specified with CL = 50 pF, using measurement points VM = 1.3 V for inputs and 0.1×VCC/0.9×VCC for outputs per JEDEC standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Quad 2-input AND gate - enables parallel Boolean conjunction of four independent signal pairs |
| Supply Voltage Range | 4.5 V to 5.5 V - ensures compatibility with standard 5 V TTL and mixed-voltage systems |
| Propagation Delay (tpd) | 14–36 ns @ VCC = 4.5 V, CL = 50 pF - defines maximum clock/data path latency in synchronous logic |
| Input Thresholds | VIH = 2.0 V min, VIL = 0.8 V max - guarantees reliable recognition of legacy TTL output levels |
| Output Drive | ±4.0 mA @ VOH/VOL - sufficient to drive multiple 74-series inputs or small capacitive loads |
| Operating Temperature | −40 °C to +125 °C - qualified for extended industrial and under-hood applications |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - meets ANSI/ESDA/JEDEC JS-001 Class 2 and JS-002 Class C3 |
Pinout & Package
74HCT08DB,118 uses the SO14 (SOT337-1) plastic small outline package: 14-lead, 3.9 mm body width, 1.27 mm lead pitch, and surface-mount construction. Pin 1 is marked by a notch or index area; the package is not automotive-qualified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A, 2A, 3A, 4A | Data Input A | First input of each AND gate (pins 1, 4, 9, 12); accepts TTL-level signals |
| 1B, 2B, 3B, 4B | Data Input B | Second input of each AND gate (pins 2, 5, 10, 13); clamped to prevent overvoltage damage |
| 1Y, 2Y, 3Y, 4Y | Data Output | AND result per gate (pins 3, 6, 8, 11); drives CMOS or TTL loads up to ±4 mA |
| GND | Ground Reference | Pin 7 - 0 V reference for all I/O and supply; must be low-impedance for noise immunity |
| VCC | Supply Voltage | Pin 14 - connects to regulated 4.5–5.5 V rail; decoupling capacitor required near pin |
Key Features
| Feature | Design Value |
|---|---|
| TTL-Compatible Inputs | Accepts standard 5 V TTL output levels without level-shifting circuitry |
| Input Clamp Diodes | Enables safe interface to voltages > VCC when series current-limiting resistors are used |
| High Noise Immunity | Guaranteed 400 mV noise margin at VCC = 5 V due to VIH/VIL separation and CMOS threshold stability |
| Latch-Up Robustness | Exceeds 100 mA per JESD78 Class II Level B - prevents destructive parasitic SCR activation |
| Wide Temp Range | Specified from −40 °C to +125 °C - supports operation in harsh industrial environments |
Applications
| Industrial PLC I/O Expansion | Microcontroller Peripheral Enable Logic |
|---|---|
|
Use Scenario: Gating sensor data streams before transmission to a central controller in a programmable logic controller rack. IC Role / Device Role / Timing Role: Quad AND gate acts as hardware-level channel selector, enabling/disabling four analog-to-digital converter outputs based on address decode lines. Use Value: Reduces software overhead by offloading enable/disable decisions to deterministic combinational logic with sub-36 ns response. |
Use Scenario: Controlling access to SPI peripherals (e.g., EEPROM, display driver) on an embedded ARM Cortex-M4 board. IC Role / Device Role / Timing Role: Provides chip-select arbitration between two SPI masters sharing one peripheral bus, using AND logic on CS and clock-enable signals. Use Value: Eliminates bus contention risk and avoids firmware-based mutual exclusion delays, ensuring glitch-free peripheral handover. |
| Digital Audio Signal Routing | Legacy Bus Interface Translation |
|
Use Scenario: Muting individual audio DAC channels in a multi-zone home theater amplifier based on zone activation flags. IC Role / Device Role / Timing Role: Each AND gate combines a fixed logic-high mute enable with a zone-specific control signal to generate per-channel mute strobes. Use Value: Enables zero-latency, hardware-synchronized muting without CPU intervention or interrupt latency penalties. |
Use Scenario: Interfacing a 5 V TTL UART transceiver to a 3.3 V microcontroller GPIO bank with bidirectional level tolerance. IC Role / Device Role / Timing Role: Acts as unidirectional logic translator for control signals (RTS/CTS), leveraging TTL input thresholds and CMOS output swing. Use Value: Avoids dedicated level shifters by exploiting native 5 V-tolerant inputs and rail-to-rail 3.3 V–compatible outputs. |
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 |
|---|---|---|---|
| 74HCT08D,118 | Same logic function and electrical specs; packaged in SO14 (SOT108-1) instead of SSOP14 (SOT337-1) | SOT108-1 has wider 3.9 mm body vs. SOT337-1's 5.3 mm - impacts PCB layout density and reflow profile | Select for legacy board compatibility or where larger pad spacing eases assembly inspection |
| SN74HCT08DR | Texas Instruments part; identical VIH/VIL, tpd = 19 ns typ @ 5 V, CL = 50 pF; SO14 package (same footprint as SOT108-1) | Qualified to AEC-Q100 Grade 3 (−40 °C to +85 °C) but not +125 °C - limits high-temp deployment | Choose when TI supply chain preference or automotive-adjacent qualification is prioritized over extended temperature range |
Compared with 74HCT08DB,118, the 74HCT08D,118 offers identical functionality in a more widely adopted SO14 variant, while SN74HCT08DR trades extended temperature support for automotive-aligned qualification - making the DB variant optimal for space-constrained industrial designs needing full −40 °C to +125 °C operation.
Availability
74HCT08DB,118 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, microcontroller peripheral enable logic, and digital audio signal routing requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for 74HCT08DB,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 delivering high-performance logic, discrete, and MOSFET solutions with emphasis on efficiency, reliability, and sustainability.
The 74HCT series targets industrial and consumer applications requiring TTL-compatible CMOS logic with robust ESD protection, wide temperature operation, and low static power consumption.
FAQ
Can 74HCT08DB,118 operate at 3.3 V supply?
No. The 74HCT08DB,118 is specified only for 4.5–5.5 V operation per its TTL-input design. At 3.3 V, VIH minimum (2.0 V) remains valid, but VOH drops below 2.4 V and propagation delay increases beyond specification - use 74HC08 or 74LVC08 for 3.3 V systems.
What is the maximum capacitive load this device can drive reliably?
The 74HCT08DB,118 is characterized up to 50 pF load capacitance with guaranteed timing. Driving >50 pF increases propagation delay nonlinearly and may cause output rise/fall time degradation; for >100 pF, add a buffer stage or reduce trace length and stubs.
Is the SSOP14 (SOT337-1) package RoHS compliant and lead-free?
Yes. Nexperia confirms the 74HCT08DB,118 in SOT337-1 packaging meets RoHS Directive 2011/65/EU and is lead-free, with SnAgCu (SAC305) termination finish and halogen-free molding compound.
Does this device require external pull-up or pull-down resistors on unused inputs?
Yes. Unused inputs must be tied to VCC or GND via ≤1 kΩ resistor to prevent floating nodes, which cause increased ICC, noise susceptibility, and potential oscillation - especially critical in high-noise industrial environments.
74HCT08DB,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 14-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 4mA, 4mA
- Input Logic Level - Low:
- 0.8V
- Input Logic Level - High:
- 2V
- Max Propagation Delay @ V, Max CL:
- 24ns @ 4.5V, 50pF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SSOP
74HCT08DB,118 FAQ
1.How can I place an order for 74HCT08DB,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT08DB,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 74HCT08DB,118 reliable?
The price and inventory of 74HCT08DB,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT08DB,118 is usually 5 days.
3.What payment methods are accepted for 74HCT08DB,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT08DB,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT08DB,118?
74HCT08DB,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT08DB,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 74HCT08DB,118?
For technical support, including 74HCT08DB,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT08DB,118 requirements.
6.How does Aetrix verify that 74HCT08DB,118 is sourced from the original manufacturer or authorized distributors?
All 74HCT08DB,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 74HCT08DB,118 meets industry standards.
7.What is the process for return or replacement of 74HCT08DB,118?
All 74HCT08DB,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT08DB,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 74HCT08DB,118 part is unused and in its original packaging.
Return procedure for 74HCT08DB,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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