SN74ALS874B - 具有三态输出的双路 4 位 D 类边沿触发器

SN74ALS874B是TI德州仪器公司的一款D类触发器产品，SN74ALS874B是具有三态输出的双路 4 位 D 类边沿触发器，本站介绍了SN74ALS874B的封装应用图解、特点和优点、功能等，并给出了与SN74ALS874B相关的TI元器件型号供参考。

SN74ALS874B - 具有三态输出的双路 4 位 D 类边沿触发器 - D类触发器 - 触发器/锁存器/寄存器 - 德州仪器

产品描述

These dual 4-bit D-type edge-triggered flip-flops feature 3-state outputs designed specifically as bus drivers. They are particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.

The edge-triggered flip-flops enter data on the low-to-high transition of the clock (CLK) input. The SN54ALS874B, SN74ALS874B, and SN74AS874 have clear () inputs and noninverting Q outputs. The SN74ALS876A and SN74AS876 have preset () inputs and inverting Q\ outputs; taking low causes the four Q or Q\ outputs to go low independently of the clock.

The SN54ALS874B is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS874B, SN74ALS876A, SN74AS874, and SN74AS876 devices are characterized for operation from 0°C to 70°C.

产品特性

3-State Buffer-Type Outputs Drive Bus Lines Directly
Bus-Structured Pinout
Choice of True or Inverting Logic
- SN54ALS874B, SN74ALS874B, SN74AS874 Have True Outputs
- SN74ALS876A, SN74AS876 Have Inverting Outputs
Asynchronous Clear
Package Options Include Plastic Small-Outline (DW) Packages, Plastic (FN) and Ceramic (FK) Chip Carriers, and Standard Plastic (NT) and Ceramic (JT) 300-mil DIPs

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