The CY74FCT16841T and CY74FCT162841T are 20-bit D-type latches designed for use in bus applications requiring high speed and low power. These devices can be used as two independent 10-bit latches, or as a single 10-bit latch, or as a single 20-bit latch by connecting the Output Enable (OE) and Latch (LE) inputs. Flow-through pinout and small shrink packaging aid in simplifying board layout.
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.
The CY74FCT16841T is ideally suited for driving high-capacitance loads and low-impedance backplanes.
The CY74FCT162841T has 24-mA balanced output drivers with current limiting resistors in the outputs. This reduces the need for external terminating resistors and provides for minimal undershoot and reduced ground bounce. The CY74FCT162841T is ideal for driving transmission lines.
FCT-C speed at 5.5 ns (FCT16841T Com'l)
Ioff supports partial-power-down mode operation
Edge-rate control circuitry for significantly improved noise characteristics
Typical output skew < 250 ps
ESD > 2000V
TSSOP (19.6-mil pitch) and SSOP (25-mil pitch) packages
Industrial temperature range of -40°C to +85°C
VCC = 5V ± 10%
64 mA sink current, 32 mA source current
Typical VOLP (ground bounce) <1.0V at VCC = 5V, TA = 25°C
Balanced 24 mA output drivers
Reduced system switching noise
Typical VOLP (ground bounce) <0.6V at VCC = 5V, TA = 25°C