Overview
The SN74HCT08DT, produced by Texas Instruments, is a quadruple 2-input positive-AND gate integrated circuit. This device is fabricated using advanced silicon-gate CMOS technology, which provides low quiescent power and a wide power supply range. It is designed to perform the Boolean function Y = A • B in positive logic, making it suitable for various digital logic applications.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| VCC Supply Voltage | 4.5 | 5 | 5.5 | V |
| VIH High-Level Input Voltage | 2.0 | - | - | V |
| VIL Low-Level Input Voltage | - | - | 0.8 | V |
| Propagation Delay (tpd) | 13 | - | 22 | ns |
| Transition Time (tt) | 8 | - | 14 | ns |
| Output Drive at 5V | - | - | ±4 mA | - |
| Input Current | - | - | 1 µA | - |
| Operating Temperature | -40 | - | 85 | °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 ICC of 20 µA
- Fast switching times with a typical propagation delay of 13 ns
- ±4 mA output drive at 5V
- Low input current of 1 µA max
- Inputs are TTL-voltage compatible
- Pb-free and halide-free packaging
Applications
- Combining power good signals in power supply systems
- Enabling digital signals in various electronic circuits
- Interfacing between TTL and NMOS components and standard CMOS devices
- Replacing LS-TTL devices to reduce power consumption in existing designs
Q & A
- What is the operating voltage range of the SN74HCT08DT? The operating voltage range is from 4.5V to 5.5V.
- How many 2-input AND gates does the SN74HCT08DT contain? The device contains four independent 2-input AND gates.
- What is the typical propagation delay of the SN74HCT08DT? The typical propagation delay is 13 ns.
- Can the SN74HCT08DT drive LSTTL loads? Yes, it can drive up to 10 LSTTL loads.
- What is the maximum output drive current at 5V? The maximum output drive current at 5V is ±4 mA.
- Is the SN74HCT08DT Pb-free and halide-free? Yes, the device is Pb-free and halide-free.
- What is the recommended operating temperature range? The recommended operating temperature range is from -40°C to 85°C.
- How much power does the SN74HCT08DT consume? The maximum power consumption (ICC) is 20 µA.
- What is the input current of the SN74HCT08DT? The maximum input current is 1 µA.
- Are the inputs of the SN74HCT08DT TTL-voltage compatible? Yes, the inputs are TTL-voltage compatible.
