The CD74HCT4075E logic gate utilizes silicon-gate
CMOS technology to achieve operating speeds similar to
LSTTL gates with the low power consumption of standard
CMOS integrated circuits. All devices have the ability to drive
10 LSTTL loads. The HCT logic family is functionally pin
compatible with the standard LS logic family.
The maximum frequency of operation for the CD74HCT4075E is typically around 30-40 MHz, but it can vary depending on the specific application and operating conditions.
To ensure proper powering and decoupling, connect the VCC pin to a stable 5V power supply, and decouple the power supply lines with 0.1uF ceramic capacitors as close to the device as possible. Additionally, use a 10uF electrolytic capacitor for bulk decoupling.
The CD74HCT4075E can sink or source up to 6mA per output pin, and up to 25mA total for all output pins combined.
Unused inputs should be tied to a valid logic level (either VCC or GND) to prevent them from floating and causing unintended behavior. This can be done using pull-up or pull-down resistors, or by connecting them to a valid logic signal.
The CD74HCT4075E is designed to operate with 5V logic levels, but it can be used with 3.3V logic levels with some limitations. The device will still function, but the output voltage levels may not be fully compatible with 3.3V logic, and the noise margin may be reduced.
CD74HCT4075E datasheet
by Texas Instruments
