Function and Pinout Compatible With FCT

and F Logic

25-Ω Output Series Resistors Reduce

Transmission-Line Reflection Noise

TTL-Output-Level Version 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)

Fully Compatible With TTL Input and

Output Logic Levels

12-mA Output Sink Current

15-mA Output Source Current

3-State Outputs

description

The CY74FCT2240T is an octal buffer and line driver that includes on-chip 25-Ω terminating resistors at each

of the outputs to minimize noise resulting from reflections or standing waves in high-performance applications.

The on-chip resistors reduce overall board space and component count. Designed to be employed as a memory

address driver, clock driver, and bus-oriented transmitter/receiver, this device provides speed and drive

capabilities commensurate with its fastest bipolar logic counterparts, while reducing power dissipation. The

input and output voltage levels allow direct interface with TTL, NMOS, and CMOS devices, without the need

for external components.

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.