CY74FCT244DTSOCT.Z中文资料德州仪器数据手册PDF规格书

Function, Pinout, and Drive Compatible

With FCT and F Logic

Reduced VOH (Typically = 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

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.