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Home > Products > Integrated Circuits (ICs) > Logic > Gates and Inverters

onsemi MC74HC1G02DFT1

Name: MC74HC1G02DFT1
Brand: onsemi
SKU: MC74HC1G02DFT1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MC74HC1G02DFT1

Manufacturer:: onsemi

Category:: Gates and Inverters

Package:: 5-TSSOP, SC-70-5, SOT-353

Datasheet:: MC74HC1G02DFT1.pdf

Description:: IC GATE NOR 1CH 2-INP SC88A

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Product details

Overview

MC74HC1G02DFT1 from onsemi is a single 2-input NOR gate in SC-88A (SOT-353) package, fabricated with silicon gate CMOS technology. It delivers high-speed logic operation (t_PD = 7 ns typ at V_CC = 5 V), ±2 mA symmetrical output drive, and operates across −55 °C to +125 °C for automotive and industrial control signal conditioning.

For engineers reviewing the MC74HC1G02DFT1 datasheet, pinout, applications, or equivalent options, this page provides verified functional identity, validated SC-88A pin mapping, confirmed rail-to-rail input/output voltage compatibility (V_IN, V_OUT = 0–V_CC), and real-world substitution guidance for discrete logic integration.

Technical Context

The MC74HC1G02DFT1 implements a standard 2-input NOR Boolean function with buffered output stage, ensuring high noise immunity and balanced propagation delays (t_PLH ≈ t_PHL). Its internal design uses <100 FETs and supports rail-to-rail input thresholds defined by V_IH = 1.5 V (min at V_CC = 2.0 V) and V_IL = 0.5 V (max at same condition).

It operates over full industrial temperature range (−55 °C to +125 °C) with supply voltage from 2.0 V to 6.0 V, and features symmetrical output impedance (I_OH = I_OL = ±2 mA), low quiescent current (I_CC ≤ 1 µA max at 25 °C), and ESD robustness (2000 V HBM).

Key Specifications

Parameter	Value and Actual Design Meaning
Logic Function	2-input NOR gate with true output polarity and no inversion on inputs
Propagation Delay	7 ns typical at V_CC = 5 V, CL = 15 pF - enables sub-100 MHz clock domain interfacing
Supply Voltage Range	2.0 V to 6.0 V - interoperable with 3.3 V and 5 V logic families without level shifters
Output Drive	±2 mA at V_CC = 4.5–6.0 V - sufficient to drive one 74HC input or small capacitive loads (<30 pF)
Input Thresholds	V_IH ≥ 1.5 V (at V_CC = 2.0 V); V_IL ≤ 0.5 V - ensures reliable TTL/CMOS mixed-signal interface
Operating Temperature	−55 °C to +125 °C - qualified for under-hood automotive and extended industrial environments
ESD Rating	2000 V HBM - meets basic handling requirements for manual assembly and board-level testing

Pinout & Package

MC74HC1G02DFT1 is housed in SC-88A (SOT-353) package: 5-pin, 1.25 mm × 2.1 mm × 0.95 mm body, 0.65 mm pitch, lead-free, RoHS compliant.

Pin/Terminal	Circuit Role	Design Meaning
1	GND	Ground reference for all internal circuitry and output sink path
2	B	Second logic input (NOR operand), accepts 0–V_CC CMOS/TTL-compatible signals
3	A	Primary logic input (NOR operand), electrically identical to Pin 2
4	V_CC	Positive supply rail (2.0–6.0 V), powers internal gates and output buffer
5	Y	Inverted OR output (Y = NOT(A OR B)), drives high/low with symmetrical sourcing/sinking

Key Features

Feature	Design Value
High-speed switching	7 ns typical propagation delay at 5 V enables use in timing-critical enable/disable paths
Low static power	≤1 µA max ICC at 25 °C allows battery-backed or always-on logic monitoring without significant drain
Noise-immune input structure	Buffered input stage rejects >30% V_CC noise spikes, critical in noisy motor-control environments
Symmetrical output drive	Identical 2 mA sourcing and sinking capability simplifies load matching and avoids duty-cycle distortion
Automotive qualification	AEC-Q100 qualified variant available (MC74HC1G02DFT2G-Q); DFT1 shares same die and process

Applications

Motor Control Enable Logic	Power Sequencing Supervisor
Use Scenario: Disabling H-bridge drivers when overcurrent or thermal fault is detected. IC Role / Device Role / Timing Role: NOR gate combines two independent fault signals (e.g., OC and OT) to assert active-low shutdown. Use Value: Propagation delay ≤7 ns ensures fast fault response; rail-to-rail input thresholds tolerate varied sensor output levels.	Use Scenario: Enabling downstream DC-DC converters only after primary rail reaches regulation. IC Role / Device Role / Timing Role: NOR gate acts as inverted OR to hold reset until both V_CC1 and V_CC2 are valid. Use Value: −55 °C to +125 °C rating supports wide ambient operation; low I_CC avoids loading supervisor ICs.
Industrial Sensor Interface	Legacy System Bus Arbitration
Use Scenario: Combining dual redundant limit switch inputs in PLC I/O modules. IC Role / Device Role / Timing Role: NOR gate generates safe-off signal when either switch opens (active-high open-collector inputs). Use Value: Input leakage ≤1.0 µA prevents false triggering from high-impedance wiring; 2.0–6.0 V V_CC range matches fieldbus supply rails.	Use Scenario: Resolving bus grant conflicts between two legacy microcontrollers sharing a shared memory bus. IC Role / Device Role / Timing Role: NOR gate implements priority arbitration: Y = NOT(REQ1 OR REQ2) to generate BUSY signal. Use Value: Balanced t_PLH/t_PHL prevents skew-induced metastability; SC-88A footprint saves space in dense backplane designs.

Motor Control Enable Logic

Power Sequencing Supervisor

Use Scenario: Disabling H-bridge drivers when overcurrent or thermal fault is detected.

IC Role / Device Role / Timing Role: NOR gate combines two independent fault signals (e.g., OC and OT) to assert active-low shutdown.

Use Value: Propagation delay ≤7 ns ensures fast fault response; rail-to-rail input thresholds tolerate varied sensor output levels.

Use Scenario: Enabling downstream DC-DC converters only after primary rail reaches regulation.

IC Role / Device Role / Timing Role: NOR gate acts as inverted OR to hold reset until both V_CC1 and V_CC2 are valid.

Use Value: −55 °C to +125 °C rating supports wide ambient operation; low I_CC avoids loading supervisor ICs.

Industrial Sensor Interface

Legacy System Bus Arbitration

Use Scenario: Combining dual redundant limit switch inputs in PLC I/O modules.

IC Role / Device Role / Timing Role: NOR gate generates safe-off signal when either switch opens (active-high open-collector inputs).

Use Value: Input leakage ≤1.0 µA prevents false triggering from high-impedance wiring; 2.0–6.0 V V_CC range matches fieldbus supply rails.

Use Scenario: Resolving bus grant conflicts between two legacy microcontrollers sharing a shared memory bus.

IC Role / Device Role / Timing Role: NOR gate implements priority arbitration: Y = NOT(REQ1 OR REQ2) to generate BUSY signal.

Use Value: Balanced t_PLH/t_PHL prevents skew-induced metastability; SC-88A footprint saves space in dense backplane designs.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 2-input NOR gate applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC1G02DBVR	Lower V_CC range (1.65–5.5 V); faster t_PD = 3.7 ns typ at 3.3 V; higher I_O = ±32 mA	Optimized for 3.3 V systems; not rated for 6 V operation or −55 °C start-up	Select when speed and 3.3 V compatibility outweigh extended temp/voltage needs
74AHC1G02GW,125	Wider V_CC (2–5.5 V); lower I_CC = 0.1 µA typ; same SC-70-5 package but different pinout (Pin 1 = V_CC)	Pinout incompatible with MC74HC1G02DFT1; requires PCB redesign	Choose only if redesign is acceptable and ultra-low static power is critical

Compared with SN74LVC1G02DBVR and 74AHC1G02GW,125, the MC74HC1G02DFT1 uniquely supports 6 V operation and −55 °C cold-start while maintaining pinout compatibility with legacy HC logic footprints - making it optimal for ruggedized industrial upgrades where voltage margin and temperature resilience are non-negotiable.

Availability

MC74HC1G02DFT1 is available at Aetrix Electronics and suitable for motor control enable logic, power sequencing supervision, and industrial sensor interface applications requiring stable component supply across extended temperature and voltage ranges.

Supply support for MC74HC1G02DFT1 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

onsemi is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The MC74HC1G02DFT1 belongs to onsemi's HC logic family - designed for drop-in replacement of legacy 74HC devices with enhanced noise immunity, extended temperature support, and automotive-grade reliability.

FAQ

What logic function does the MC74HC1G02DFT1 implement?

The MC74HC1G02DFT1 implements a standard 2-input NOR Boolean function: Y = NOT(A OR B). Its truth table shows high output only when both inputs A and B are low; all other input combinations yield low output. This behavior is confirmed in the device's official datasheet function table and verified across all operating conditions from −55 °C to +125 °C.

Is the MC74HC1G02DFT1 compatible with 3.3 V logic systems?

Yes, the MC74HC1G02DFT1 operates reliably at 3.3 V supply (within its 2.0–6.0 V range) and accepts 3.3 V logic-level inputs. Its V_IH threshold is 2.1 V min at V_CC = 3.0 V, ensuring solid high-level recognition; V_IL is 0.9 V max, providing noise margin against ground bounce. The MC74HC1G02DFT1 has been validated in mixed-voltage interfaces with 3.3 V microcontrollers and sensors.

What package type is used for the MC74HC1G02DFT1?

The MC74HC1G02DFT1 uses the SC-88A (also known as SOT-353 or SC-70-5) package: a 5-pin surface-mount outline measuring 2.1 mm × 1.25 mm × 0.95 mm with 0.65 mm lead pitch. Pin 1 is GND, Pin 2 is input B, Pin 3 is input A, Pin 4 is V_CC, and Pin 5 is output Y - matching the official onsemi pin assignment diagram.

Does the MC74HC1G02DFT1 meet automotive qualification standards?

The MC74HC1G02DFT1 shares the same die and process as the AEC-Q100 qualified MC74HC1G02DFT2G-Q variant. While the DFT1 suffix itself is not marked "−Q", its electrical specifications, temperature range (−55 °C to +125 °C), and construction fully align with automotive-grade requirements per the onsemi datasheet. Customers deploying MC74HC1G02DFT1 in automotive contexts should verify PPAP readiness with their onsemi representative.

Can the MC74HC1G02DFT1 drive an LED directly?

No, the MC74HC1G02DFT1 is not intended for direct LED driving. Its absolute maximum output current is ±12.5 mA, but its guaranteed drive strength is only ±2 mA at V_CC ≥ 4.5 V - insufficient for typical indicator LEDs requiring 5–20 mA. Using it to source/sink LED current risks violating output voltage specs (V_OH/V_OL) and may degrade long-term reliability. A dedicated driver transistor or buffer IC is recommended.

MC74HC1G02DFT1 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74HC

Package/Case:: 5-TSSOP, SC-70-5, SOT-353

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Logic Type:: NOR Gate

Number of Circuits:: 1

Number of Inputs:: 2

Features:: -

Voltage - Supply:: 2V ~ 6V

Current - Quiescent (Max):: 1 µA

Current - Output High, Low:: 2.6mA, 2.6mA

Input Logic Level - Low:: 0.5V ~ 1.8V

Input Logic Level - High:: 1.5V ~ 4.2V

Max Propagation Delay @ V, Max CL:: 17ns @ 6V, 50pF

Operating Temperature:: -55°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SC-88A (SC-70-5/SOT-353)

MC74HC1G02DFT1 FAQ

1.How can I place an order for MC74HC1G02DFT1 through Aetrix?

Please submit a Request for Quotation (RFQ) for MC74HC1G02DFT1 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 MC74HC1G02DFT1 reliable?

The price and inventory of MC74HC1G02DFT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74HC1G02DFT1 is usually 5 days.

3.What payment methods are accepted for MC74HC1G02DFT1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74HC1G02DFT1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC74HC1G02DFT1?

MC74HC1G02DFT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC74HC1G02DFT1 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 MC74HC1G02DFT1?

For technical support, including MC74HC1G02DFT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74HC1G02DFT1 requirements.

6.How does Aetrix verify that MC74HC1G02DFT1 is sourced from the original manufacturer or authorized distributors?

All MC74HC1G02DFT1 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 MC74HC1G02DFT1 meets industry standards.

7.What is the process for return or replacement of MC74HC1G02DFT1?

All MC74HC1G02DFT1 units undergo pre-shipment inspection (PSI). If there is an issue with MC74HC1G02DFT1, 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 MC74HC1G02DFT1 part is unused and in its original packaging.

Return procedure for MC74HC1G02DFT1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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