Overview
The SN74HCT02D is a quadruple 2-input positive-NOR gate integrated circuit produced by Texas Instruments. This device is part of the HCT (High-Speed CMOS) family and is designed to operate within the voltage range of 4.5V to 5.5V, making it compatible with TTL (Transistor-Transistor Logic) systems. The SN74HCT02D contains four independent 2-input NOR gates, each performing the Boolean function Y = A • B or Y = A + B in positive logic.
Key Specifications
| Parameter | Min | Nom | 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 | ||
| VOH High-Level Output Voltage (IOH = -20 μA) | 4.4 | 4.499 | V | |
| VOL Low-Level Output Voltage (IOL = 20 μA) | 0.001 | 0.1 | V | |
| ICC Supply Current (VI = VCC or 0, IO = 0) | 2 | 40 | μA | |
| tpd Propagation Delay (A or B to Y) | 10 | 20 | ns | |
| tt Transition Time (Y) | 9 | 15 | ns | |
| TJ Junction Temperature | 150 | °C | ||
| Tstg Storage Temperature | -65 | 150 | °C |
Key Features
- Operating voltage range of 4.5V to 5.5V, compatible with TTL systems.
- Outputs can drive up to 10 LSTTL loads.
- Low power consumption, with a maximum ICC of 20 μA.
- Typical propagation delay of 10 ns.
- ±4-mA output drive at 5V.
- Low input current of 1 μA max.
- Inputs are TTL-voltage compatible.
Applications
The SN74HCT02D is suitable for a variety of digital logic applications, including:
- General-purpose logic circuits.
- TTL-compatible systems.
- Microprocessor and microcontroller interfaces.
- Digital signal processing and control systems.
Q & A
- What is the operating voltage range of the SN74HCT02D?
The operating voltage range is 4.5V to 5.5V.
- How many NOR gates are included in the SN74HCT02D?
The device contains four independent 2-input NOR gates.
- What is the typical propagation delay of the SN74HCT02D?
The typical propagation delay is 10 ns.
- What is the maximum output current of the SN74HCT02D?
The maximum continuous output current is ±25 mA.
- Is the SN74HCT02D compatible with TTL systems?
Yes, it is compatible with TTL systems.
- What are the package options available for the SN74HCT02D?
The device is available in SOIC, PDIP, SOP, and TSSOP packages.
- What is the junction temperature range for the SN74HCT02D?
The junction temperature range is up to 150°C.
- How much power does the SN74HCT02D consume?
The maximum supply current (ICC) is 20 μA.
- Can the SN74HCT02D drive multiple LSTTL loads?
Yes, it can drive up to 10 LSTTL loads.
- What is the input current of the SN74HCT02D?
The maximum input current is 1 μA.
