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SN74HCT02DR

Name: SN74HCT02DR
Rating: 4.7 (12 reviews)

IC GATE NOR 4CH 2-INP 14SOIC

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資料表 SN74HCT02DR DataSheet
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規格

Supplier	Texas Instruments
Package	Tape & Reel (TR),Cut Tape (CT)
Series	74HCT
ProductStatus	Active
LogicType	NOR Gate
NumberofCircuits	4
NumberofInputs	2
Voltage-Supply	4.5V ~ 5.5V
Current-Quiescent(Max)	2 µA
Current-OutputHighLow	4mA, 4mA
LogicLevel-Low	0.8V
LogicLevel-High	2V
MaxPropagationDelay@VMaxCL	18ns @ 5.5V, 50pF
OperatingTemperature	-40°C ~ 85°C
MountingType	Surface Mount
SupplierDevicePackage	14-SOIC

概述

Description

SN74HCT02DR is a Texas Instruments quad 2-input NOR gate in the SN74HCT family. It contains four independent NOR gates in one 14-pin package.
Key points:
- Function: Each gate outputs high only when both inputs are low (Y = NOT (A OR B)).
- Electrical: Falls in the 4.5–5.5 V supply range; TTL-compatible inputs (HCT) with CMOS outputs.
- Performance: Fast switching; propagation delay on the order of a few nanoseconds at 5 V (depends on load/fan-out).
- Package: DR suffix indicates a surface-mount, likely RoHS-compliant SOIC 14-pin package (often with tape-and-reel options).
Common uses:
- Implementing NOR-based logic networks, simple combinational circuits, and signal gating where multiple NOR gates are needed in one package.

Features

SN74HCT02DR features:
- Quad 2-input NOR gates (4 NOR gates in one package)
- High-speed CMOS with TTL-compatible inputs (HCT)
- Supply voltage: typically 4.5 V to 5.5 V
- TTL-compatible input thresholds
- Low static and dynamic power consumption
- ESD protection on all inputs
- 14-pin small-outline package (D) with Tape & Reel option (DR suffix)

Package

It’s a 14‑pin SOIC (D‑package) device. RoHS‑compliant and typically supplied in Tape‑and‑Reel.

Pinout

- Pin count: 14 pins
- Function: Quadruple 2-input NOR gate (four independent NOR gates; part of the HCT family; typically 4.5–5.5 V supply)

Manufacturer

- Manufacturer: Texas Instruments (TI).
- What kind of company: An American multinational technology company that designs and manufactures semiconductors and integrated circuits; one of the world's largest semiconductor manufacturers.

Application

Application areas:
- Universal NOR gate: implement any combinational logic (AND, OR, NOT) with NORs.
- Clock and signal gating in microprocessors/digital systems.
- TTL/CMOS interfacing (HCT inputs tolerate TTL levels; outputs CMOS).
- Address/instruction decoding, memory chip select, multiplexing/demultiplexing.
- Glue logic for decoders, counters, and simple state machines.
- Prototyping and teaching digital logic.

Equivalent

SN74HCT02DR is a quad 2-input NOR gate in the HCT family. Equivalents from other vendors include:
- Nexperia: 74HCT02
- ON Semiconductor: MC74HCT02
- Renesas: uPD74HCT02
- Diodes Inc: DM74HCT02
- Rohm: μPD74HCT02
Note: check packaging (D/SOP, etc.) and supply voltages to ensure proper compatibility.