The 74AHC595BQ is a high-performance, 8-bit serial-in/serial or parallel-out shift register with a storage register and 3-state outputs from NXP Semiconductors. It is part of the AHC family, which is known for its high-speed CMOS technology. This device is designed to have a broad voltage range from 2.0V to 5.5V, making it suitable for interfacing with both 3.3V and 5V systems.
Key Features:
- Shift Register: The 74AHC595BQ features an 8-bit serial shift register, which allows for the conversion of serial data to parallel data, enhancing its utility in extending the output ports of microcontrollers.
- Storage Register: Equipped with an 8-bit storage register, this device can store the data from the shift register before it is output to the pins, providing an additional layer of data manipulation and control.
- 3-State Outputs: The outputs of the 74AHC595BQ can be put into a high-impedance state, which is especially useful in bus-oriented applications where multiple outputs may need to share a common connection.
- Output Drive Capability: Capable of driving up to 8 mA at 5 V, this shift register can directly drive LEDs and other low-power output devices.
- Shift Clock Input: The shift register is clocked on the low-to-high transitions of the SHCP input while the output register is clocked on a high-to-low transition of the STCP input, allowing for flexible control of data transfer.
Applications:
The versatility of the 74AHC595BQ makes it an ideal choice for a wide range of applications. It is commonly used in:
- Serial-to-parallel data conversion
- Remote control holding registers
- LED and display drivers
- Interface circuitry for microprocessors
- System resource expansion
Package and Quality:
The 74AHC595BQ is offered in a DHVQFN16 package, which is a leadless, very thin quad flat package with no leads and a body size of 2.5 x 3.5 x 0.85 mm. This compact form factor makes it suitable for space-constrained applications. Additionally, the product is compliant with the stringent quality standards set by NXP, ensuring reliable performance and durability for industrial and commercial use.
