SN74ACT244MDWREP屬于集成電路（IC）的緩沖器驅(qū)動器接收器收發(fā)器。由美國德州儀器公司制造生產(chǎn)的SN74ACT244MDWREP緩沖器，驅(qū)動器，接收器，收發(fā)器邏輯緩沖器、驅(qū)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(qū)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。

FEATURES

· Controlled Baseline

– One Assembly/Test Site, One Fabrication

Site

· Extended Temperature Performance of up to

–55°C to 125°C

· Enhanced Diminishing Manufacturing

Sources (DMS) Support

· Enhanced Product-Change Notification

· Qualification Pedigree (1)

· 4.5-V to 5.5-V VCC Operation

· Inputs Accept Voltages to 5.5 V

· Max tpd of 9.5 ns at 5 V

· Inputs Are TTL Compatible

DESCRIPTION/ORDERING INFORMATION

The SN74ACT244-EP octal buffer/driver is designed specifically to improve the performance and density of

3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters.

The device is organized as two 4-bit buffers/drivers with separate output-enable (OE) inputs. When OE is low,

the device passes noninverted data from the A inputs to the Y outputs. When OE is high, the outputs are in the

high-impedance state.

To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup

resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.