SN54AS825A - 具有三态输出的 8 位总线接口触发器

SN54AS825A是TI德州仪器公司的一款D类触发器产品，SN54AS825A是具有三态输出的 8 位总线接口触发器，本站介绍了SN54AS825A的封装应用图解、特点和优点、功能等，并给出了与SN54AS825A相关的TI元器件型号供参考。

SN54AS825A - 具有三态输出的 8 位总线接口触发器 - D类触发器 - 触发器/锁存器/寄存器 - 德州仪器

产品描述

These 8-bit flip-flops feature 3-state outputs designed specifically for driving highly capacitive or relatively low-impedance loads. These devices are particularly suitable for implementing multiuser registers, I/O ports, bidirectional bus drivers, and working registers.

With the clock-enable () input low, the eight D-type edge-triggered flip-flops enter data on the low-to-high transitions of the clock (CLK) input. Taking high disables the clock buffer, latching the outputs. These devices have noninverting data (D) inputs. Taking the clear () input low causes the eight Q outputs to go low independently of the clock.

Multiuser buffered output-enable (,, and ) inputs can be used to place the eight outputs in either a normal logic state (high or low logic level) or a high-impedance state. In the high-impedance state, the outputs neither load nor drive the bus lines significantly. The high-impedance state and increased drive provide the capability to drive bus lines without interface or pullup components.

The output enables do not affect the internal operation of the flip-flops. Old data can be retained or new data can be entered while the outputs are in the high-impedance state.

The SN54AS825A is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74AS825A is characterized for operation from 0°C to 70°C.

= H if any of OE1\, OE2\, or OE3\ are high. = L if all of OE1\, OE2\, or OE3\ are low.

产品特性

Functionally Equivalent to AMD's AM29825
Improved IOH Specifications
Multiple Output Enables Allow Multiuser Control of the Interface
Outputs Have Undershoot-Protection Circuitry
Power-Up High-Impedance State
Buffered Control Inputs Reduce dcLoading Effects
Package Options Include Plastic Small-Outline (DW) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (NT) and Ceramic (JT) 300-mil DIPs

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