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PS2031L 02/26/07
Block Diagram
Description
Pericom Semiconductor’s PI74FCT16244T and PI74FCT162244T
are non-inverting 16-bit buffer/line drivers designed for
applications driving high capacitance loads and low impedance
backplanes. These high-speed, low power devices offer bus/
backplane interface capability and a flow-through organization
for ease of board layout. These devices are designed with three-
state controls to operate in a Quad-Nibble, Dual-Byte, or a single
16-bit word mode.
The PI74FCT16244T output buffers are designed with a Power-
Off disable allowing “live insertion” of boards when used as
backplane drivers.
The PI74FCT162244T has ±24mA balanced output drivers. It is
designed with current limiting resistors at its outputs to control
the output edge rate resulting in lower ground bounce and
undershoot. This eliminates the need for external terminating
resistors for most interface applications.
Features
Common Features
• High-speed, low-power devices with high-current drive
V
CC
= 5V ±10%
• Hysteresis on all inputs
• Device models available upon request
PI74FCT16244T Features
• High output drive: I
OH
= –32mA; I
OL
= 64mA
• Power off disable outputs permit "live insertion"
• Typical V
OLP
(Output Ground Bounce)
< 1.0V at V
CC
= 5V, T
A
= 25°C
PI74FCT162244T Features
• Balanced output drivers: ±24mA
• Reduced system switching noise
• Typical V
OLP (Output Ground Bounce)
< 0.6V at V
CC
= 5V, T
A
= 25°C
• Packaging (Pb-free & Green available):
– 48-pin 240-mil wide plastic TSSOP (A)
– 48-pin 300-mil wide plastic SSOP (V)
– 48-pin 173-mil wide plastic TVSOP (K)
PI74FCT16244T
PI74FCT162244T
Fast CMOS 16-Bit Buffer/Line Drivers
