Overview
The CD74HC02M96G4 is a high-speed CMOS logic quad two-input NOR gate produced by Texas Instruments. This device contains four independent 2-input NOR gates, each performing the Boolean function Y = A + B in positive logic. It is part of the CD74HC02 series, known for its wide operating voltage range and significant power reduction compared to LSTTL logic ICs.
The device is available in a SOIC (Small Outline Integrated Circuit) package, making it suitable for a variety of applications where space efficiency and low power consumption are crucial.
Key Specifications
| Parameter | Min | |||
|---|---|---|---|---|
| Supply Voltage (VCC) | 2 | 6 | V | |
| Operating Temperature Range | -55 | 125 | °C | |
| Propagation Delay (A or B to Y) at VCC = 2 V, CL = 50 pF | 90 | 115 | 135 | ns |
| Propagation Delay (A or B to Y) at VCC = 4.5 V, CL = 50 pF | 18 | 23 | 27 | ns |
| Propagation Delay (A or B to Y) at VCC = 6 V, CL = 50 pF | 15 | 20 | 23 | ns |
| Input Capacitance at VCC = 5 V | 10 | pF | ||
| Supply Current (ICC) at VCC = 6 V, VI = VCC or 0 | 20 | µA | ||
| Junction-to-Ambient Thermal Resistance (RθJA) for SOIC package | 133.6 | °C/W |
Key Features
- Buffered Inputs: Ensures stable input signals.
- Wide Operating Voltage Range: From 2 V to 6 V, making it versatile for various applications.
- Wide Operating Temperature Range: From -55°C to 125°C, suitable for harsh environments.
- Significant Power Reduction: Compared to LSTTL logic ICs, reducing power consumption.
- Supports Fanout up to 10 LSTTL Loads: High fanout capability.
- Balanced CMOS Push-Pull Outputs: Capable of sinking and sourcing similar currents.
- CMOS Inputs: Requires fast input transitions for optimal performance.
Applications
- Alarm and Tamper Detect Circuits: Can be used to create tamper detection systems.
- S-R Latch: Can be configured to create active-low SR latches.
- General Logic Circuits: Suitable for various digital logic applications.
- System Controllers: Can provide logic functions and drive indicators in system control scenarios.
Q & A
- What is the operating voltage range of the CD74HC02M96G4?
The operating voltage range is from 2 V to 6 V.
- What is the maximum operating temperature for the CD74HC02M96G4?
The maximum operating temperature is 125°C.
- How many independent NOR gates does the CD74HC02M96G4 contain?
The device contains four independent 2-input NOR gates.
- What is the typical propagation delay at VCC = 6 V and CL = 50 pF?
The typical propagation delay is 20 ns.
- What is the recommended input capacitance?
The recommended input capacitance is 10 pF at VCC = 5 V.
- How much current can the device source or sink?
The device can source or sink current as specified in the Electrical Characteristics table, typically up to 20 µA at VCC = 6 V.
- What are the thermal resistance values for the SOIC package?
The junction-to-ambient thermal resistance (RθJA) for the SOIC package is 133.6 °C/W.
- Can unused inputs be left floating?
No, unused inputs must be terminated to either VCC or ground to prevent floating inputs.
- How should power supply be managed for this device?
The power supply should have a good bypass capacitor, typically a 0.1-μF capacitor, installed close to the power terminal.
- What are some common applications of the CD74HC02M96G4?
Common applications include alarm and tamper detect circuits, S-R latches, and general logic circuits in system controllers.
