Overview
The CD74HC02MT, produced by Texas Instruments, is a high-speed CMOS logic quad two-input NOR gate. This device is part of the HC logic family, known for its low power consumption and high operating speeds comparable to LSTTL gates. The CD74HC02MT is available in a 14-pin SOIC package and operates over a wide temperature range of -55°C to 125°C, making it versatile for various applications.
Key Specifications
| Parameter | Symbol | Min | Max | Unit | Conditions | |
|---|---|---|---|---|---|---|
| Supply Voltage | VCC | 2 | - | 6 | V | - |
| Operating Temperature | TA | -55 | - | 125 | °C | - |
| Propagation Delay (CL = 50 pF) | tPLH, tPHL | 90 | 115 | 135 | ns | VCC = 2 V, TA = 25°C |
| Propagation Delay (CL = 50 pF) | tPLH, tPHL | 18 | 23 | 27 | ns | VCC = 4.5 V, TA = 25°C |
| Propagation Delay (CL = 50 pF) | tPLH, tPHL | 15 | 20 | 23 | ns | VCC = 6 V, TA = 25°C |
| Input Capacitance | Ci | 10 | - | 10 | pF | VCC = 5 V |
| Supply Current | ICC | - | - | 40 | µA | VCC = 6 V, VI = VCC or 0 |
Key Features
- Buffered Inputs: The device features buffered inputs for improved signal integrity.
- Wide Operating Voltage Range: Operates over a voltage range of 2 V to 6 V.
- Wide Operating Temperature Range: Functions from -55°C to 125°C.
- High Fanout Capability: Can drive up to 10 LSTTL loads.
- Low Power Consumption: Significant power reduction compared to LSTTL logic ICs.
- Balanced CMOS Push-Pull Outputs: The device includes balanced CMOS push-pull outputs, capable of sinking and sourcing similar currents.
Applications
- Alarm and Tamper Detect Circuits: Often used in security systems to detect tampering.
- S-R Latch Circuits: Can be used to create active-low SR latches.
- Logic Functions: Each gate can be used individually for various logic functions.
- System Controllers: Used to drive indicators and provide data to system controllers.
Q & A
- What is the operating voltage range of the CD74HC02MT?
The CD74HC02MT operates over a voltage range of 2 V to 6 V.
- What is the temperature range for the CD74HC02MT?
The device functions from -55°C to 125°C.
- How many LSTTL loads can the CD74HC02MT drive?
The CD74HC02MT can drive up to 10 LSTTL loads.
- What type of outputs does the CD74HC02MT have?
The device includes balanced CMOS push-pull outputs.
- What are some common applications of the CD74HC02MT?
Common applications include alarm and tamper detect circuits, S-R latch circuits, and logic functions in system controllers.
- What is the propagation delay of the CD74HC02MT at VCC = 6 V and CL = 50 pF?
The propagation delay is typically 20 ns, with a maximum of 23 ns.
- How much current can the CD74HC02MT supply?
The device can source up to 40 µA of supply current when VCC = 6 V and VI = VCC or 0.
- What is the input capacitance of the CD74HC02MT?
The input capacitance is 10 pF when VCC = 5 V.
- Is the CD74HC02MT sensitive to electrostatic discharge?
Yes, the device is sensitive to electrostatic discharge, and proper IC handling procedures should be followed.
- What package types are available for the CD74HC02MT?
The CD74HC02MT is available in a 14-pin SOIC package.
