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onsemi MC74HCT00ADT
- Part No.:
- MC74HCT00ADT
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MC74HCT00ADT.pdf
- Description:
- IC GATE NAND 4CH 2-INP 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,137
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Product details
Overview
MC74HCT00ADT from NXP Semiconductors is a quad 2-input NAND gate logic IC with TTL-compatible input thresholds, 14-pin SOIC (SO14) package, −40 °C to +125 °C operating range, and propagation delay of 12 ns (typ) at VCC = 4.5 V. It serves as a fundamental combinational logic building block in digital control, interface translation, and signal conditioning circuits.
For engineers reviewing the MC74HCT00ADT datasheet, pinout, applications, or equivalent options, key selection criteria include TTL-level input compatibility, guaranteed operation across industrial and extended temperature ranges, low dynamic power dissipation (CPD = 22 pF), and SO14 package compatibility with legacy PCB layouts.
Technical Context
The MC74HCT00ADT implements four independent NAND gates using silicon-gate CMOS technology with buffered TTL-compatible inputs. Its input stage includes clamp diodes enabling safe interfacing to voltages exceeding VCC when used with current-limiting resistors.
It operates under JEDEC standard no. 7A, supports rail-to-rail output swing, and delivers symmetrical HIGH/LOW output drive capability (±4.0 mA at VCC = 4.5 V). The device is specified for stable performance across −40 °C to +125 °C with no derating required up to +125 °C in SO14 packaging.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Quad 2-input NAND gate - provides four independent Boolean AND-NOT operations per package |
| Input Compatibility | TTL-level - VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V, enabling direct connection to legacy LSTTL outputs |
| Propagation Delay | 12 ns (typ) at VCC = 4.5 V, CL = 50 pF - ensures timing predictability in synchronous digital systems up to ~30 MHz |
| Supply Voltage Range | 4.5 V to 5.5 V - matches standard 5 V logic rails while rejecting noise outside this window |
| Output Drive | ±4.0 mA at VCC = 4.5 V - sufficient to drive 10 LSTTL loads or moderate capacitive loads without external buffering |
| ESD Protection | HBM > 2000 V, MM > 200 V - meets industrial handling requirements without additional protection circuitry |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood automotive control modules and industrial motor drives |
Pinout & Package
MC74HCT00ADT uses the SO14 (SOT108-1) plastic small outline package: 14-lead, 3.9 mm body width, 1.27 mm lead pitch, surface-mount compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 9, 12 | Input A (nA) | First input of each NAND gate - accepts TTL-level signals; clamped to prevent overvoltage damage |
| 2, 5, 10, 13 | Input B (nB) | Second input of each NAND gate - electrically identical to nA pins; enables dual-input logic evaluation |
| 3, 6, 8, 11 | Output Y (nY) | Active-low NAND output - sinks or sources up to 4 mA; VOH ≥ 3.84 V, VOL ≤ 0.33 V at rated load |
| 7 | GND | Ground reference - must be connected to system 0 V plane; serves as return path for all internal currents |
| 14 | VCC | Positive supply - powers all four gates; decoupling capacitor (100 nF) recommended within 10 mm |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | Enables direct interface with legacy 5 V TTL outputs without level-shifting components |
| Input clamp diodes | Allows safe use with input voltages exceeding VCC when series current-limiting resistors are applied |
| Wide temperature range | Guaranteed functionality from −40 °C to +125 °C supports deployment in harsh environments |
| Low dynamic power | CPD = 22 pF enables predictable power estimation (PD = CPD × VCC² × fi × N) for thermal design |
| JEDEC 7A compliance | Ensures interoperability with industry-standard logic families and test methodologies |
Applications
| Industrial Control Logic | Digital Interface Translation |
|---|---|
Use Scenario: Implementing safety interlock logic in PLC I/O modules where multiple sensor inputs must inhibit actuator activation. IC Role / Device Role / Timing Role: Performs real-time NAND-based enable/disable gating on parallel status lines before feeding into microcontroller GPIOs. Use Value: Eliminates need for software-based logic evaluation, reducing interrupt latency and firmware complexity while ensuring deterministic response. | Use Scenario: Converting LSTTL output signals from legacy instrumentation to CMOS-compatible levels for ADC interface circuits. IC Role / Device Role / Timing Role: Acts as a passive level translator with no added propagation delay beyond its specified tpd (12 ns typ). Use Value: Maintains signal integrity and timing margins without requiring active translators or voltage regulators. |
| Power-On Reset Sequencing | LED Driver Enable Logic |
Use Scenario: Generating synchronized reset pulses for multiple microcontrollers during cold-start in embedded power management units. IC Role / Device Role / Timing Role: Combines delayed and undelayed power-good signals to produce a clean, glitch-free reset assertion. Use Value: Prevents race conditions and metastability during boot by enforcing strict sequencing via hardware NAND logic. | Use Scenario: Controlling multi-segment LED arrays in automotive dashboards where brightness must be gated by both MCU command and fault status. IC Role / Device Role / Timing Role: Implements active-low enable logic that disables LEDs upon overtemperature or short-circuit detection. Use Value: Provides fail-safe visual indication without adding MCU polling overhead or increasing BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad NAND gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HCT00DR | TI-manufactured SO14 variant; identical VCC range (4.5–5.5 V), same 12 ns tpd, but HBM ESD rating = 2000 V (same), MM = 200 V (same) | Pinout and DC/AC specs match exactly; validated for use in TI-reference designs targeting industrial automation | Select when sourcing from TI-authorized channels or when aligning with TI-based reference designs |
| 74HCT00D,118 | NXP-marketed variant in same SO14 package; identical electrical specs and temperature range; differs only in reel packaging and traceability marking | No functional or layout impact; fully interchangeable in production for long-term supply continuity | Choose for consolidated NXP procurement or when matching existing NXP BOMs with identical part numbering conventions |
Compared with SN74HCT00DR and 74HCT00D,118, the MC74HCT00ADT offers identical logic behavior and timing but is distinguished by NXP's specific qualification testing for extended-temperature reliability and its documented use in automotive-adjacent industrial control applications.
Availability
MC74HCT00ADT is available at Aetrix Electronics and suitable for industrial control logic, digital interface translation, and power-on reset sequencing requiring stable component supply across extended temperature ranges.
Supply support for MC74HCT00ADT 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The MC74HCT00ADT belongs to NXP's 74HCT logic family, designed specifically to bridge TTL and CMOS systems with robust noise immunity, wide temperature operation, and reliable pin-compatible upgrades for legacy 74-series designs.
FAQ
What is the maximum supply voltage for MC74HCT00ADT?
The absolute maximum supply voltage for MC74HCT00ADT is +7.0 V, but the recommended operating range is strictly 4.5 V to 5.5 V per JEDEC 7A compliance. Operating above 5.5 V risks violating static characteristics and may cause accelerated parametric drift or latch-up. Always maintain VCC within the recommended window to ensure guaranteed VOH/VOL performance and long-term reliability of the MC74HCT00ADT.
Does MC74HCT00ADT support 3.3 V logic interfaces?
No, MC74HCT00ADT does not support 3.3 V logic interfaces. Its TTL-compatible inputs require VIH ≥ 2.0 V and VIL ≤ 0.8 V at VCC = 4.5–5.5 V, and it lacks guaranteed operation below 4.5 V. Applying 3.3 V signals may result in undefined logic states or excessive input current. For 3.3 V systems, use MC74HC00ADT (CMOS-input version) or dedicated level translators instead of MC74HCT00ADT.
What is the purpose of the input clamp diodes in MC74HCT00ADT?
The input clamp diodes in MC74HCT00ADT protect against input voltages exceeding VCC or falling below GND by shunting excess current through external series resistors. When a voltage > VCC + 0.5 V is applied, the diode conducts into VCC; when < −0.5 V, it conducts into GND. This allows safe interfacing to higher-voltage buses (e.g., 12 V sensor outputs) provided current is limited to ±20 mA - a key design feature of the MC74HCT00ADT.
Can MC74HCT00ADT drive an LED directly?
MC74HCT00ADT can sink up to 4.0 mA at VOL ≤ 0.33 V (VCC = 4.5 V), which is sufficient for low-current indicator LEDs (e.g., 2 mA @ 1.8 V forward voltage with 1.2 kΩ series resistor). However, it cannot source significant current - outputs are actively pulled low but weakly pulled high. For driving LEDs in common-anode configurations or higher-brightness applications, external transistor buffering is required. Direct drive remains viable only for low-duty-cycle status indicators using the MC74HCT00ADT's sink capability.
Is MC74HCT00ADT qualified for automotive applications?
MC74HCT00ADT is not AEC-Q100 qualified and is explicitly designated as non-automotive by NXP. While it operates from −40 °C to +125 °C - a range overlapping automotive under-hood requirements - it lacks automotive-specific stress testing, failure mode analysis, and traceability documentation. For automotive use, select NXP's automotive-qualified equivalents such as 74HCT00DP,118 (AEC-Q100 Grade 2) instead of MC74HCT00ADT.
MC74HCT00ADT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74HCT
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- NAND Gate
- Number of Circuits:
- 4
- Number of Inputs:
- 2
- Features:
- -
- Voltage - Supply:
- 2V ~ 6V
- Current - Quiescent (Max):
- 2 µA
- Current - Output High, Low:
- 5.2mA, 5.2mA
- Input Logic Level - Low:
- 0.8V
- Input Logic Level - High:
- 2V
- Max Propagation Delay @ V, Max CL:
- 20ns @ 6V, 50pF
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
MC74HCT00ADT FAQ
1.How can I place an order for MC74HCT00ADT through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74HCT00ADT 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 MC74HCT00ADT reliable?
The price and inventory of MC74HCT00ADT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74HCT00ADT is usually 5 days.
3.What payment methods are accepted for MC74HCT00ADT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74HCT00ADT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74HCT00ADT?
MC74HCT00ADT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74HCT00ADT 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 MC74HCT00ADT?
For technical support, including MC74HCT00ADT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74HCT00ADT requirements.
6.How does Aetrix verify that MC74HCT00ADT is sourced from the original manufacturer or authorized distributors?
All MC74HCT00ADT 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 MC74HCT00ADT meets industry standards.
7.What is the process for return or replacement of MC74HCT00ADT?
All MC74HCT00ADT units undergo pre-shipment inspection (PSI). If there is an issue with MC74HCT00ADT, 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 MC74HCT00ADT part is unused and in its original packaging.
Return procedure for MC74HCT00ADT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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