PI74FCT162540T Просмотр технического описания (PDF) - Pericom Semiconductor
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PI74FCT162540T Datasheet PDF : 6 Pages
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PI74FCT16P54I07/146F25C40T/11662H545400TT
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PI74FCT162H540T
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Product Features
Common Features
• PI74FCT16500T,PI74FCT162500T,andPI74FCT162H540T
are high-speed,
low power devices with high current drive
• VCC =5V±10%
• Hysteresis on all inputs
• Packages available
– 48-pin 240 mil wide plastic TSSOP (A)
– 48-pin 300 mil wide plastic SSOP (V)
PI74FCT16540T Features
• High output drive: IOH = –32 mA; IOL = 64 mA
• Power off disable outputs permit “live insertion”
• Typical VOLP (Output Ground Bounce) < 1.0V
at VCC = 5V, TA = 25°C
PI74FCT162540T Features
• Balanced output drivers: ±24 mA
• Reduced system switching noise
• Typical VOLP (Output Ground Bounce) < 0.6V
at VCC = 5V, TA = 25°C
PI74FCT162H540T Features (Advance Information)
• Bus Hold retains last active bus state during 3-state
• Eliminates the need for external pull-up resistors
Fast CMOS 16-Bit
Buffer/Line Drivers
Product Description
Pericom Semiconductor’s PI74FCT series of logic circuits are pro-
duced in the Company’s advanced 0.6 micron CMOS technology,
achieving industry leading speed grades.
The PI74FCT16540T, PI74FCT162540T, and PI74FCT162H540T
are 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 PI74FCT16540T output buffers are designed with a Power-Off
disable allowing "live insertion" of boards when used as backplane
drivers.
The PI74FCT162540T 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.
The PI74FCT162H540T has “Bus Hold” which retains the input's
last state whenever the input goes to high-impedance preventing
"floating" inputs and eliminating the need for pull-up/down resistors.
Logic Block Diagram
1OEA
1OEB
2OEA
2OEB
1A0
1Y0
2A0
2Y0
1A1
1Y1
2A1
2Y1
1A2
1Y2
2A2
2Y2
1A3
1Y3
2A3
2Y3
1A4
1Y4
2A4
2Y4
1A5
1Y5
2A5
2Y5
1A6
1Y6
2A6
2Y6
1A7
1Y7
2A7
2Y7
1
PS2036A 03/11/96
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