Function, Pinout, and Drive Compatible

With FCT, F, and AM29841 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

Matched Rise and Fall Times

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

High-Speed Parallel Latches

Buffered Common Latch-Enable Input

3-State Outputs

CY54FCT841T

– 32-mA Output Sink Current

– 12-mA Output Source Current

CY74FCT841T

– 64-mA Output Sink Current

– 32-mA Output Source Current

description

The ’FCT841T bus-interface latches are designed to eliminate additional packages required to buffer existing

latches and provide additional data width for wider address/data paths or buses carrying parity. The ’FCT841T

devices are buffered 10-bit-wide versions of the FCT373 function.

The ’FCT841T devices’ high-performance interface is designed for high-capacitance-load drive capability, while

providing low-capacitance bus loading at both inputs and outputs. Outputs are designed for low-capacitance

bus loading 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.