SN74ABT162823A屬于集成電路（IC）的觸發(fā)器。由美國(guó)德州儀器公司制造生產(chǎn)的SN74ABT162823A觸發(fā)器觸發(fā)器是能夠存儲(chǔ)單個(gè)邏輯狀態(tài)或信息“位”的基本數(shù)字存儲(chǔ)器件。這些器件至少有兩個(gè)輸入；一個(gè)或多個(gè)用于傳遞要存儲(chǔ)的數(shù)據(jù)，另一個(gè)用于指示存儲(chǔ)該數(shù)據(jù)的時(shí)間點(diǎn)。不同的觸發(fā)器類型，例如 D（延遲）、SR（置位復(fù)位）和 JK，對(duì)提供給其輸入的信號(hào)有不同的響應(yīng)，可用于實(shí)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(shí)鐘信號(hào)時(shí)才會(huì)改變。

Members of the Texas Instruments

Widebus? Family

Output Ports Have Equivalent 25-Ω Series

Resistors So No External Resistors Are

Required

Typical VOLP (Output Ground Bounce)

<1 V at VCC = 5 V, TA = 25°C

High-Impedance State During Power Up

and Power Down

Ioff and Power-Up 3-State Support Hot

Insertion

Distributed VCC and GND Pins Minimize

High-Speed Switching Noise

Flow-Through Architecture Optimizes PCB

Layout

description/ordering information

These 18-bit bus-interface flip-flops feature

3-state outputs designed specifically for driving

highly capacitive or relatively low-impedance

loads. They are particularly suitable for

implementing wider buffer registers, I/O ports,

bidirectional bus drivers with parity, and working

registers.

The ’ABT162823A devices can be used as two

9-bit flip-flops or one 18-bit flip-flop. With the

clock-enable (CLKEN) input low, the D-type

flip-flops enter data on the low-to-high transitions

of the clock. Taking CLKEN high disables the

clock buffer, thus latching the outputs. Taking the

clear (CLR) input low causes the Q outputs to go

low independently of the clock.