SN74ALS534ANSR屬于集成電路（IC）的觸發(fā)器。由美國德州儀器公司制造生產(chǎn)的SN74ALS534ANSR觸發(fā)器觸發(fā)器是能夠存儲單個邏輯狀態(tài)或信息“位”的基本數(shù)字存儲器件。這些器件至少有兩個輸入；一個或多個用于傳遞要存儲的數(shù)據(jù)，另一個用于指示存儲該數(shù)據(jù)的時間點。不同的觸發(fā)器類型，例如 D（延遲）、SR（置位復(fù)位）和 JK，對提供給其輸入的信號有不同的響應(yīng)，可用于實現(xiàn)不同的邏輯功能。這些器件與鎖存器的不同之處在于它們是邊緣敏感器件，其保持的邏輯狀態(tài)僅在接收到有效時鐘信號時才會改變。

3-State Bus Driving Inverting Outputs

Buffered Control Inputs

Package Options Include Plastic

Small-Outline (DW), Ceramic Chip Carriers

(FK), and Standard Plastic (N) and Ceramic

(J) 300-mil DIPs

description

These octal D-type edge-triggered flip-flops

feature 3-state outputs designed specifically for

driving highly capacitive or relatively lowimpedance

loads. They are particularly suitable

for implementing buffer registers, I/O ports,

bidirectional bus drivers, and working registers.

On the positive transition of the clock (CLK) input,

the Q outputs are set to the complement of the

logic states set up at the data (D) inputs. The

’ALS534A and SN74AS534 have inverted outputs,

but otherwise are functionally equivalent to

the ’ALS374A and SN74AS374.

A buffered output-enable (OE) input places the

eight outputs in either a normal logic state (high or

low logic levels) 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.

OE does not affect the internal operations of the flip-flops. Old data can be retained or new data can be entered

while the outputs are off.

The SN54ALS534A is characterized for operation over the full military temperature range of –55°C to 125°C.

The SN74ALS534A and SN74AS534 are characterized for operation from 0°C to 70°C.