SN74LS173ADRE4

4位D类寄存器具有三态输出 4-BIT D-TYPE REGISTERS WITH 3-STATE OUTPUTS

description

The ’173 and ’LS173A 4-bit registers include D-type flip-flops featuring totem-pole 3-state outputs capable of driving highly capacitive or relatively low-impedance loads. The high-impedance third state and increased

high-logic-level drive provide these flip-flops with the capability of being connected directly to and driving the bus lines in a bus-organized system without need for interface or pull-up components.

3-State Outputs Interface Directly With System Bus

Gated Output-Control LInes for Enabling or Disabling the Outputs

Fully Independent Clock Virtually

  Eliminates Restrictions for Operating in One of Two Modes:

    – Parallel Load

    – Do Nothing Hold

For Application as Bus Buffer Registers

Package Options Include Plastic

  Small-Outline D Packages, Ceramic Flat W Packages, Ceramic Chip Carriers FK, and Standard Plastic N and Ceramic J DIPs