PI74FCT16541T
PI74FCT162541T
PI74FCT162H541T
Fast CMOS 16-Bit Octal
Buffer/Line Drivers
ProductFeatures
Product Description
CommonFeatures
Pericom Semiconductors PI74FCT series of logic circuits are pro-
duced in the Companys advanced 0.6 micron CMOS technology,
achieving industry leading speed grades.
PI74FCT16541T,PI74FCT162541T,andPI74FCT162H541T
are high-speed,
low power devices with high current drive
VCC =5V±10%
Hysteresis on all inputs
Packages available
48-pin240milwideplasticTSSOP(A)
48-pin300milwideplasticSSOP(V)
PI74FCT16541TFeatures
ThePI74FCT16541T,PI74FCT162541T,andPI74FCT162H541T
arenon-inverting16-bitbuffer/linedriversdesignedforapplications
driving high capacitance loads and low impedance backplanes.
Thesehigh-speed,lowpowerdevicesofferbus/backplaneinterface
capabilityandaflow-throughorganizationforeaseofboardlayout.
These devices are designed with three-state controls to operate in a
Dual-Byte, or a single 16-bit word mode.
High output drive: IOH = 32 mA; IOL = 64 mA
Power off disable outputs permit live insertion
Typical VOLP (Output Ground Bounce) < 1.0V
atVCC =5V,TA =25°C
ThePI74FCT16541ToutputbuffersaredesignedwithaPower-Off
disable allowing live insertion of boards when used as backplane
drivers.
The PI74FCT162541T has ±24 mA 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.
PI74FCT162541TFeatures
Balanced output drivers: ±24 mA
Reduced system switching noise
Typical VOLP (Output Ground Bounce) < 0.6V
atVCC =5V,TA =25°C
PI74FCT162H541TFeatures
Bus Hold retains last active bus state during 3-state
Eliminates the need for external pull-up resistors
The PI74FCT162H541T has Bus Hold which retains the inputs
last state whenever the input goes to high-impedance preventing
floatinginputsandeliminatingtheneedforpull-up/downresistors.
LogicBlockDiagram
1OEA
2OEA
1OEB
2OEB
1A0
1A1
1A2
2A0
2A1
2A2
1Y0
1Y1
1Y2
2Y0
2Y1
2Y2
1A3
1A4
2A3
2A4
1Y3
1Y4
2Y3
2Y4
1A5
1A6
2A5
2A6
1Y5
1Y6
2Y5
2Y6
1A7
2A7
1Y7
2Y7
PS2037B 07/09/97
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