CY74FCT2245ATSOC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

CY74FCT2245ATSOC属于集成电路（IC）的缓冲器驱动器接收器收发器。由德州仪器制造生产的CY74FCT2245ATSOC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。

Function and Pinout Compatible With FCT

and F Logic

25-Ω Output Series Resistors to Reduce

Transmission-Line Reflection Noise

Edge-Rate Control Circuitry for

Significantly Improved Noise

Characteristics

Ioff Supports Partial-Power-Down Mode

Operation

Fully Compatible With TTL Input and

Output Logic Levels

ESD Protection Exceeds JESD 22

– 2000-V Human-Body Model (A114-A)

– 200-V Machine Model (A115-A)

– 1000-V Charged-Device Model (C101)

12-mA Output Sink Current

15-mA Output Source Current

3-State Outputs

description

The CY74FCT2245T contains eight noninverting, bidirectional buffers with 3-state outputs intended for

bus-oriented applications. On-chip termination resistors at the outputs reduce system noise caused by

reflections. For this reason, the CY74FCT2245T can replace the CY74FCT245T in an existing design. The

CY74FCT2245T current-sinking capability is 12 mA at the A and B ports.

The transmit/receive (T/R) input determines the direction of data flow through the bidirectional transceiver.

Transmit (active high) enables data from A ports to B ports; receive (active low) enables data from B ports to

A ports. The output-enable (OE) input, when high, disables both the A and B ports by putting them in the

high-impedance state.

This device is fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs,

preventing damaging current backflow through the device when it is powered down.