General description

The 74HC4094; 74HCT4094 is an 8-bit serial-in/serial or parallel-out shift register with a storage register and 3-state outputs. Both the shift and storage register have separate clocks. The device features a serial input (D) and two serial outputs (QS1 and QS2) to enable cascading. Data is shifted on the LOW-to-HIGH transitions of the CP input. Data is available at QS1 on the LOW-to-HIGH transitions of the CP input to allow cascading when clock edges are fast. The same data is available at QS2 on the next HIGH-to-LOW transition of the CP input to allow cascading when clock edges are slow. The data in the shift register is transferred to the storage register when the STR input is HIGH. Data in the storage register appears at the outputs whenever the output enable input (OE) is HIGH. A LOW on OE causes the outputs to assume a high-impedance OFF-state. Operation of the OE input does not affect the state of the registers. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

Features and benefits

■ Complies with JEDEC standard JESD7A

■ Input levels:

◆ For 74HC4094: CMOS level

◆ For 74HCT4094: TTL level

■ Low-power dissipation

■ ESD protection:

◆ HBM JESD22-A114F exceeds 2 000 V

◆ MM JESD22-A115-A exceeds 200 V

■ Specified from -40°C to +85°C and from -40°C to +125°C

Applications

■ Serial-to-parallel data conversion

■ Remote control holding register

74HC4094N属于集成电路（IC） > 移位寄存器。恩智浦半导体公司制造生产的74HC4094N移位寄存器移位寄存器是低级逻辑器件，通常用于在串行和并行方式之间转换数字逻辑信号形式的数据，或在数字字内移动数据位的位置。移位寄存器通常使用集成到一个设备中的一组触发器来实现，常用于集成度更高的逻辑器件，但仍可用于 I/O 扩展等应用，在这些应用中离散形式的函数可能会非常有用。