1. General description

The 74LV164 is an 8-bit serial-in/parallel-out shift register. The device features two serial data

inputs (DSA and DSB), eight parallel outputs (Q0 to Q7). Data is entered serially through DSA or

DSB and either input can be used as an active HIGH enable for data entry through the other input.

Data is shifted on the LOW-to-HIGH transition of the clock input (CP). A LOW on the master reset

input (MR) clears the register and forces all outputs LOW, independently of other inputs.

Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to

voltages in excess VCC.

2. Features and benefits

• Wide supply voltage range from 1.0 V to 5.5 V

• CMOS low power dissipation

• Optimized for low-voltage applications: 1.0 V to 3.6 V

• Accepts TTL input levels between VCC = 2.7 V and VCC = 3.6 V

• Typical VOLP (output ground bounce): < 0.8 V at VCC = 3.3 V and Tamb = 25 °C

• Typical VOHV (output VOH undershoot): > 2 V at VCC = 3.3 V and Tamb = 25 °C

• Gated serial data inputs

• Asynchronous master reset

• Latch-up performance exceeds 100 mA per JESD 78 Class II Level B

• Complies with JEDEC standards:

• JESD8-7 (1.65 V to 1.95 V)

• JESD8-5 (2.3 V to 2.7 V)

• JESD8C (2.7 V to 3.6 V)

• JESD36 (4.5 V to 5.5 V)

• ESD protection:

• HBM JESD22-A114F exceeds 2000 V

• MM JESD22-A115-A exceeds 200 V

• Specified from -40 °C to +80 °C and from -40 °C to +125 °C.

74LV164PW属于集成电路（IC） > 移位寄存器。安世半导体(中国)有限公司制造生产的74LV164PW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。