SN74LV594ADBR - 8-Bit Shift Registers with Output Registers

The SN74LV594ADBR from Texas Instruments is a high-performance, 8-bit shift register that combines both serial and parallel interfaces with a set of output registers. This integrated circuit is part of the 74LV family, designed to operate at low voltage and with low power consumption, making it ideal for a wide range of applications, from consumer electronics to industrial control systems.

The device features an 8-bit serial-in, parallel-out shift register that feeds an 8-bit D-type storage register. Inputs to the shift register include a Serial Data (SER) input and a Shift Register Clock (SRCK) input. The storage register is updated with the contents of the shift register on a positive transition of the Storage Register Clock (RCK) input. The eight outputs of the storage register (QA to QH) are available on the device pins, providing a parallel output of the shift register contents.

The SN74LV594ADBR is designed with a wide operating voltage range from 2 V to 5.5 V, which allows it to interface easily with both 3.3 V and 5 V logic levels. Its low power consumption is complemented by the high drive capability of the outputs, which can source or sink up to 24 mA at 5 V, providing good signal integrity even in demanding applications.

Additional features of the SN74LV594ADBR include an Output Enable (OE) input that, when held high, disables the outputs and places them in a high-impedance state. This is useful for interfacing with bus-oriented systems where multiple outputs may need to share a common connection. The device also offers a Clear (CLR) input that, when taken low, clears the contents of the shift and storage registers, setting all outputs to a low state.

The SN74LV594ADBR is available in a SSOP (Shrink Small-Outline Package) type DB with 16 pins and is characterized for operation from -40°C to 85°C, ensuring reliable performance in a broad range of environments. Its robust feature set and performance characteristics make it an excellent choice for applications requiring reliable data storage and transfer, such as LED displays, digital control systems, and communication interfaces.

Key Specifications:

• 8-Bit Serial-In, Parallel-Out Shift
• Wide Operating Voltage Range of 2 V to 5.5 V
• High-Drive Outputs (-24 mA to 24 mA)
• Output Enable and Clear Functions
• Operating Temperature Range: -40°C to 85°C
• Package: 16-Pin SSOP (DB)