74ACT244集成电路（IC）的缓冲器驱动器接收器收发器规格书PDF中文资料

74ACT244属于集成电路（IC）的缓冲器驱动器接收器收发器。由意法半导体集团制造生产的74ACT244缓冲器，驱动器，接收器，收发器逻辑缓冲器、驱动器、接收器和收发器允许隔离对某个电路的逻辑信号的访问，以用于另一电路。缓冲器将其输入信号（不变或反相）传递到其输出，并可能用于清除弱信号或驱动负载。在布尔逻辑仿真器中，缓冲器主要用于增加传播延迟。逻辑接收器和收发器允许在数据总线之间进行隔离通信。

DESCRIPTION

The 74ACT244 is an advanced high-speed CMOS OCTAL BUS BUFFER (3-STATE) fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS tecnology.

The G input controls four BUS BUFFERs.

This device is designed to be used with 3 state memory address drivers, etc.

■ HIGH SPEED: tPD = 4.6 ns (TYP.) at VCC = 5V

■ LOW POWER DISSIPATION: ICC = 4 µA(MAX.) at TA=25°C

■ COMPATIBLE WITH TTL OUTPUTS VIH = 2V (MIN.), VIL = 0.8V (MAX.)

■ 50Ω TRANSMISSION LINE DRIVING CAPABILITY

■ SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 24mA (MIN)

■ BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL

■ OPERATING VOLTAGE RANGE: VCC (OPR) = 4.5V to 5.5V

■ PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 244

■ IMPROVED LATCH-UP IMMUNITY