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

CY54FCT540T

– 48-mA Output Sink Current

– 12-mA Output Source Current

CY74FCT540T

– 64-mA Output Sink Current

– 32-mA Output Source Current

3-State Outputs

description

The ’FCT540T inverting buffers/line drivers can

be employed as memory address drivers, clock

drivers, and bus-oriented transmitters/receivers.

These devices provide speed and drive capabilities

equivalent to their fastest bipolar-logic

counterparts, while reducing power dissipation.

The input and output voltage levels allow direct

interface with TTL, NMOS, and CMOS devices

without external components.

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.