SN74BCT652DW屬于集成電路（IC）的緩沖器驅動器接收器收發(fā)器。由美國德州儀器公司制造生產(chǎn)的SN74BCT652DW緩沖器，驅動器，接收器，收發(fā)器邏輯緩沖器、驅動器、接收器和收發(fā)器允許隔離對某個電路的邏輯信號的訪問，以用于另一電路。緩沖器將其輸入信號（不變或反相）傳遞到其輸出，并可能用于清除弱信號或驅動負載。在布爾邏輯仿真器中，緩沖器主要用于增加傳播延遲。邏輯接收器和收發(fā)器允許在數(shù)據(jù)總線之間進行隔離通信。

State-of-the-Art BiCMOS Design

Significantly Reduces ICCZ

ESD Protection Exceeds 2000 V Per

MIL-STD-883C, Method 3015; Exceeds

200 V Using Machine Model (C = 200 pF,

R = 0)

Independent Registers and Enables for

A and B Buses

Multiplexed Real-Time and Stored Data

Power-Up High-Impedance Mode

Package Options Include Plastic

Small-Outline (DW) Packages, Ceramic

Chip Carriers (FK) and Flatpacks (W), and

Standard Plastic and Ceramic 300-mil DIPs

(JT, NT)

description

These devices consist of bus transceiver circuits,

D-type flip-flops, and control circuitry arranged for

multiplexed transmission of data directly from the

data bus or from the internal storage registers.

Output-enable (OEAB and OEBA) inputs are

provided to control the transceiver functions.

Select-control (SAB and SBA) inputs are provided

to select whether real-time or stored data is

transferred. The circuitry used for select control

eliminates the typical decoding glitch that occurs

in a multiplexer during the transition between

stored and real-time data. A low input selects

real-time data, and a high input selects stored

data. Figure 1 illustrates the four fundamental

bus-management functions that can be performed

with the ′BCT652.

Data on the A or B data bus, or both, can be stored in the internal D-type flip-flops by low-to-high transitions at

the appropriate clock (CLKAB or CLKBA) inputs regardless of the select- or enable-control pins. When SAB and

SBA are in the real-time transfer mode, it is possible to store data without using the internal D-type flip-flops by

simultaneously enabling OEAB and OEBA. In this configuration each output reinforces its input. Therefore,

when all other data sources to the two sets of bus lines are at high impedance, each set of bus lines remain at

its last state.

The SN54BCT652 is characterized for operation over the full military temperature range of ?55°C to 125°C. The

SN74BCT652 is characterized for operation from 0°C to 70°C.