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.