Overview
The SN74HCT02DR is a quadruple 2-input positive-NOR gate integrated circuit produced by Texas Instruments. This device is part of the 74HCT series, which is compatible with TTL (Transistor-Transistor Logic) voltage levels. It operates within a voltage range of 4.5V to 5.5V, making it suitable for a variety of digital logic applications. The SN74HCT02DR contains four independent NOR gates, each performing the Boolean function Y = A + B in positive logic.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage | 4.5 | 5 | 5.5 | V |
| VIH High-Level Input Voltage | 2 | V | ||
| VIL Low-Level Input Voltage | 0.8 | V | ||
| IOH High-Level Output Current | -20 μA | -4 mA | A | |
| IOL Low-Level Output Current | 20 μA | 4 mA | A | |
| tpd Propagation Delay | 10 ns | 18 ns | 27 ns | ns |
| tt Transition Time | 8 ns | 14 ns | 20 ns | ns |
| ICC Supply Current | 2 μA | 40 μA | A | |
| TJ Junction Temperature | 150 °C | °C | ||
| Tstg Storage Temperature | -65 °C | 150 °C | °C |
Key Features
- Operating voltage range of 4.5V to 5.5V.
- Outputs can drive up to 10 LSTTL loads.
- Low power consumption, with a maximum supply current (ICC) of 20 μA.
- Typical propagation delay (tpd) of 10 ns.
- ±4-mA output drive at 5V.
- Low input current of 1 μA max.
- Inputs are TTL-voltage compatible.
- Available in various packages including SOIC, PDIP, SO, and TSSOP.
Applications
The SN74HCT02DR is widely used in digital logic circuits where NOR gate functionality is required. It is suitable for applications such as:
- Digital logic circuits and systems.
- Microprocessor and microcontroller interfaces.
- Peripheral devices and controllers.
- Automotive and industrial control systems.
- Communication and networking equipment.
Q & A
- What is the operating voltage range of the SN74HCT02DR?
The operating voltage range is 4.5V to 5.5V.
- How many NOR gates are included in the SN74HCT02DR?
The device contains four independent 2-input NOR gates.
- What is the typical propagation delay of the SN74HCT02DR?
The typical propagation delay is 10 ns.
- What is the maximum output current of the SN74HCT02DR?
The maximum output current is ±25 mA.
- Is the SN74HCT02DR compatible with TTL voltage levels?
- What are the available package types for the SN74HCT02DR?
The device is available in SOIC, PDIP, SO, and TSSOP packages.
- What is the maximum junction temperature for the SN74HCT02DR?
The maximum junction temperature is 150 °C.
- What is the storage temperature range for the SN74HCT02DR?
The storage temperature range is -65 °C to 150 °C.
- How much power does the SN74HCT02DR consume?
The maximum supply current (ICC) is 20 μA.
- Can the SN74HCT02DR drive LSTTL loads?
