CY74FCT245CTSOCT

具有三态输出8位收发器 8-BIT TRANSCEIVERS WITH 3-STATE OUTPUTS

description

The ’FCT245T devices contain eight noninverting bidirectional buffers with 3-state outputs and are

intended for bus-oriented applications.

The transmit/receive T/R input determines the direction of data flow through these bidirectional transceivers. Transmit active high enables data from A ports to B ports. The output enable OE, when high, disables both the A and B ports by putting them in the high-impedance state.

These devices are 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.

Function, Pinout, and Drive Compatible With FCT and F Logic

Reduced VOHTypically = 3.3 V Versions of Equivalent FCT Functions

Edge-Rate Control Circuitry for Significantly Improved Noise Characteristics

Ioff Supports Partial-Power-Down Mode Operation

ESD Protection Exceeds JESD 22

  – 2000-V Human-Body Model A114-A

  – 200-V Machine Model A115-A

  – 1000-V Charged-Device Model C101

Matched Rise and Fall Times

Fully Compatible With TTL Input and Output Logic Levels

CY54FCT245T

  – 48-mA Output Sink Current

    12-mA Output Source Current

CY74FCT245T

  – 64-mA Output Sink Current

    32-mA Output Source Current

3-State Outputs