SN74ALVCH245DW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

SN74ALVCH245DW属于集成电路（IC）的缓冲器驱动器接收器收发器。由美国德州仪器公司制造生产的SN74ALVCH245DW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。

FEATURES

· Operates From 1.65 V to 3.6 V

· Max tpd of 3.4 ns at 3.3 V

· ±24-mA Output Drive at 3.3 V

· Bus Hold on Data Inputs Eliminates the Need

for External Pullup/Pulldown Resistors

· Latch-Up Performance Exceeds 100 mA Per

JESD 78, Class II

DESCRIPTION/ORDERING INFORMATION

This octal bus transceiver is designed for 1.65-V to

3.6-V VCC operation.

The SN74ALVCH245 is designed for asynchronous

communication between data buses. The device

transmits data from the A bus to the B bus or from

the B bus to the A bus, depending on the logic level

at the direction-control (DIR) input. The output-enable

(OE) input can be used to disable the device so the

buses are effectively isolated.

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.

Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors

with the bus-hold circuitry is not recommended.