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Nexperia USA Inc. 74HCT20D-Q100,118
- Part No.:
- 74HCT20D-Q100,118
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74HCT20D-Q100,118.pdf
- Description:
- IC GATE NAND 2CH 4-INP 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,154
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Product details
Overview
74HCT20D-Q100 from Nexperia is an automotive-qualified dual 4-input NAND gate in SO14 (SOT108-1) package, operating from 2.0 V to 6.0 V supply, with propagation delay as low as 8 ns at VCC = 5.0 V and CL = 15 pF, input clamping diodes for overvoltage tolerance, and AEC-Q100 Grade 1 qualification (-40 °C to +125 °C). It serves as a logic-level combinatorial gate in vehicle body control modules, lighting drivers, and power management sequencers.
For engineers reviewing the 74HCT20D-Q100 datasheet, 74HCT20D-Q100 pinout, 74HCT20D-Q100 application, or 74HCT20D-Q100 equivalent, this device supports robust digital signal conditioning in automotive environments where supply rail stability, noise immunity, and temperature resilience are critical selection criteria.
Technical Context
The 74HCT20D-Q100 implements two independent 4-input NAND functions using CMOS technology with TTL-compatible input thresholds (VIH = 2.0 V min at VCC = 4.5 V), enabling direct interfacing with legacy 5 V TTL systems. Its input clamp diodes allow safe operation with input voltages exceeding VCC when current-limiting resistors are used.
It features symmetrical output drive capability (±4.0 mA at VCC = 4.5 V), low static ICC (max 40 μA at VCC = 6.0 V), and dynamic power dissipation governed by CPD = 22 pF - enabling predictable thermal behavior in space-constrained automotive PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Dual independent 4-input NAND gate; enables compact implementation of multi-input logic conditions without external fan-in expansion. |
| Supply Voltage Range | 2.0 V to 6.0 V; supports wide-battery-range automotive systems including cold-crank (down to 2.0 V) and load-dump transient tolerance. |
| Propagation Delay | 8 ns typical at VCC = 5.0 V, CL = 15 pF; ensures timing-critical sequencing in power-on reset and interlock circuits. |
| Input Clamping | Integrated clamp diodes on all inputs; permits safe interface to signals up to VCC + 0.5 V with external current limiting. |
| AEC-Q100 Grade | Grade 1 qualified (-40 °C to +125 °C); certified for under-hood and cabin applications requiring extended temperature reliability. |
| ESD Protection | HBM > 2000 V, CDM > 1000 V; reduces risk of field failure during handling and system integration. |
| Output Drive | ±4.0 mA at VCC = 4.5 V; sufficient to directly drive multiple 74-series inputs or small LED indicators without buffering. |
Pinout & Package
Package: SO14 (SOT108-1), plastic small outline, 14-lead, 3.9 mm body width, lead pitch 1.27 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A, 1B, 1C, 1D | Input terminals for first NAND gate | Four logic inputs accepting standard CMOS/TTL voltage levels; internally tied to first NAND structure. |
| 1Y | Output terminal for first NAND gate | Active-low open-drain–compatible output; sinks or sources up to ±4.0 mA at VCC = 4.5 V. |
| 2A, 2B, 2C, 2D | Input terminals for second NAND gate | Electrically isolated from first gate; enables independent logic evaluation paths on single die. |
| 2Y | Output terminal for second NAND gate | Functionally identical to 1Y; allows parallel or cascaded logic implementation without cross-talk. |
| GND (Pin 7) | Ground reference | Primary return path for all internal logic and I/O currents; must be low-impedance connection to system ground plane. |
| VCC (Pin 14) | Power supply | Single-supply rail for entire IC; decoupling capacitor (100 nF ceramic) required within 5 mm of this pin. |
| n.c. (Pins 3, 11) | No-connect terminals | Internally unconnected; must remain floating - no external biasing or routing permitted. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive use across -40 °C to +125 °C ambient, meeting stress test requirements for HTOL, TC, and ESD. |
| Wide VCC range (2.0–6.0 V) | Eliminates need for level shifters in mixed-voltage domains, e.g., interfacing 3.3 V microcontrollers to 5 V sensor subsystems. |
| Input clamp diodes | Enables safe connection to signals exceeding VCC (e.g., LIN bus transients or wake-up pulses) when series resistors limit current to <20 mA. |
| High noise immunity | VIH/VIL margins exceed 30% of VCC across full temperature range, reducing susceptibility to coupled EMI in engine bay wiring harnesses. |
| Low static power consumption | ICC ≤ 40 μA at VCC = 6.0 V and TAMB = +125 °C, supporting always-on monitoring circuits with minimal battery drain. |
Applications
| Body Control Module (BCM) | LED Headlamp Driver Logic |
|---|---|
Use Scenario: Implementing door-lock arbitration logic that requires simultaneous validation of four sensor inputs (door ajar, key fob presence, ignition state, brake pedal). IC Role / Device Role / Timing Role: Dual NAND gate performs real-time combinational evaluation of safety interlocks before enabling solenoid activation. Use Value: Eliminates need for discrete resistor-diode logic or larger CPLD; reduces BOM count and PCB area while maintaining AEC-Q100 compliance. | Use Scenario: Controlling high-beam/low-beam switching sequence with fault detection based on headlamp status, dimming command, CAN message validity, and thermal shutdown flag. IC Role / Device Role / Timing Role: Acts as enable gate for driver FETs, ensuring all four conditions are met before power delivery. Use Value: Provides deterministic sub-10 ns response to fault signals, enabling fast beam cutoff during overtemperature events without software latency. |
| Power Sequencing Controller | Window Lift Motor Safety Interlock |
Use Scenario: Generating delayed enable signals for DC-DC converters in ADAS domain controllers, requiring coordinated start-up of camera, radar, and processor rails. IC Role / Device Role / Timing Role: NAND-based edge detector and delay chain element synchronizing power-on reset assertions across multiple voltage domains. Use Value: Delivers precise 8–15 ns propagation window across temperature, ensuring monotonic rail ramp-up and avoiding latch-up in downstream regulators. | Use Scenario: Preventing motor activation unless all four safety conditions are satisfied: window switch pressed, anti-pinch sensor idle, child lock disengaged, and battery voltage ≥11.5 V. IC Role / Device Role / Timing Role: Combinatorial logic block validating concurrent inputs before releasing H-bridge gate drive enable. Use Value: Meets ISO 17361 pedestrian protection timing requirements (<100 ms reaction) with hardware-level determinism, independent of MCU firmware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 4-input NAND gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HC20D-Q100 | CMOS input thresholds (VIH = 3.15 V min at VCC = 4.5 V); lower drive strength (±4 mA) and higher propagation delay (10 ns typ at 4.5 V). | Better suited for low-power, battery-sensitive modules where speed is secondary to quiescent current (ICC ≤ 2 μA typ). | Select when interfacing exclusively with CMOS logic and minimizing standby current is prioritized over timing performance. |
| SN74LV20ADT | TTL-compatible inputs with LV logic family; operates down to 1.65 V, but only qualified to industrial grade (-40 °C to +105 °C). | Lacks AEC-Q100 certification; unsuitable for under-hood or safety-critical locations without additional qualification effort. | Choose only for non-automotive or cabin-only applications where extended temperature range is not required. |
Compared with 74HC20D-Q100 and SN74LV20ADT, the 74HCT20D-Q100 uniquely balances TTL compatibility, automotive qualification, and sub-10 ns timing - making it the optimal choice for safety interlocks and power sequencing where both robustness and responsiveness are mandatory.
Availability
74HCT20D-Q100 is available at Aetrix Electronics and suitable for automotive body control modules, LED lighting drivers, and power sequencing controllers requiring stable component supply across long production lifecycles.
Supply support for 74HCT20D-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 specializing in high-performance, high-reliability logic, analog, and discrete components, with manufacturing rooted in process excellence and automotive-grade quality systems.
The 74HCT series targets automotive and industrial applications demanding TTL-compatible input thresholds, robust ESD performance, and guaranteed operation across extended temperature ranges - specifically engineered for reliable digital interfacing in harsh environments.
FAQ
Is the 74HCT20D-Q100 pin-compatible with standard 74HC20 devices?
Yes - the 74HCT20D-Q100 uses the same SO14 (SOT108-1) pinout as generic 74HC20 variants, including identical pin assignments for inputs (1A–1D, 2A–2D), outputs (1Y, 2Y), power (VCC), ground (GND), and no-connect pins (3, 11). However, its input thresholds match TTL levels, not HC levels, so logic interpretation differs when driven by pure CMOS sources.
What is the maximum allowable input voltage relative to VCC?
Per datasheet limiting values, input voltage may exceed VCC by up to +0.5 V provided input clamping current remains within ±20 mA. This is enabled by internal clamp diodes; external series resistors must be sized to limit current under overvoltage conditions, such as LIN bus wake-up pulses or load-dump transients.
Does the 74HCT20D-Q100 support hot-swap or live-insertion?
No - the device lacks explicit hot-swap protection circuitry. While input clamps improve robustness, VCC must be stable before applying input signals. Power sequencing must ensure VCC is present and settled prior to asserting any logic inputs to prevent latch-up or undefined output states during power ramp-up.
How does the 74HCT20D-Q100 handle unused inputs?
Unused inputs must be terminated to a defined logic level - either VCC or GND - via pull-up or pull-down resistors (typically 10 kΩ). Leaving inputs floating risks metastability, increased ICC, and noise-induced switching due to the high-impedance CMOS gates; this is especially critical in automotive EMI environments.
74HCT20D-Q100,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- NAND Gate
- Number of Circuits:
- 2
- Number of Inputs:
- 4
- Features:
- -
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Max):
- 2 µA
- Current - Output High, Low:
- 4mA, 5.2mA
- Input Logic Level - Low:
- 0.8V
- Input Logic Level - High:
- 2V
- Max Propagation Delay @ V, Max CL:
- 28ns @ 4.5V, 50pF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
74HCT20D-Q100,118 FAQ
1.How can I place an order for 74HCT20D-Q100,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT20D-Q100,118 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 74HCT20D-Q100,118 reliable?
The price and inventory of 74HCT20D-Q100,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT20D-Q100,118 is usually 5 days.
3.What payment methods are accepted for 74HCT20D-Q100,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT20D-Q100,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT20D-Q100,118?
74HCT20D-Q100,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT20D-Q100,118 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 74HCT20D-Q100,118?
For technical support, including 74HCT20D-Q100,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT20D-Q100,118 requirements.
6.How does Aetrix verify that 74HCT20D-Q100,118 is sourced from the original manufacturer or authorized distributors?
All 74HCT20D-Q100,118 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 74HCT20D-Q100,118 meets industry standards.
7.What is the process for return or replacement of 74HCT20D-Q100,118?
All 74HCT20D-Q100,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT20D-Q100,118, 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 74HCT20D-Q100,118 part is unused and in its original packaging.
Return procedure for 74HCT20D-Q100,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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