PI74ALVCH162244 Datasheet, PDF (1/4 Pages) Pericom Semiconductor Corporation – 16-Bit Buffer Driver with 3-STATE Outputs

PI74ALVCH162244
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Product Features
Product Description
16-Bit Buffer Driver
with 3-STATE Outputs
• PI74ALVCH162244 is designed for low voltage operation
• V_CC = 2.3V to 3.6V
• Hysteresis on all inputs
• Typical V_OLP (Output Ground Bounce)
< 0.8V at V_CC = 3.3V, T_A = 25°C
• Typical V_OHV (Output V_OH Undershoot)
< 2.0V at V_CC = 3.3V, T_A = 25°C
• Output ports have equivalent 26Ω series resistors:
no external resistors are required
• Bus Hold retains last active bus state during 3-STATE,
eliminating the need for external pullup resistors
• Industrial operation at –40°C to +85°C
• Packages available:
– 48-pin 240 mil wide plastic TSSOP (A)
– 48-pin 300 mil wide plastic SSOP (V)
Pericom Semiconductor’s PI74ALVCH series of logic circuits
are produced in the Company’s advanced 0.5 micron CMOS
technology, achieving industry leading speed.
The PI74ALVCH162244 is an non-inverting 16-bit buffer/driver
designed for low voltage 2.3V to 3.6V V_CC operation.
The buffer/driver is designed specifically to improve both the
performance and density of 3-STATE memory address drivers,
clock drivers, and bus-oriented receivers and transmitters.
The device can be used as four 4-bit buffers, two 8-bit buffers, or
one 16-bit buffer. It provides inverting outputs and symmetrical
active-low output-enable (OE) inputs.
To ensure the high-impedance state during power up or power
down, OE should be tied to V_CC through a pullup resistor in
which the minimum value is determined by the current-sinking
capability of the driver.
Logic Block Diagram
The PI74ALVCH162244 has “Bus Hold” which retains the data
input’s last state whenever the data input goes to high-imped-
ance preventing “floating” inputs and eliminating the need for
pullup/down resistors.
1OE
3OE
1A0
1Y0
3A0
3Y0
1A1
1Y1
3A1
3Y1
1A2
1Y2
3A2
3Y2
1A3
1Y3
3A3
3Y3
2OE
2A0
2A1
2A2
2A3
4OE
2Y0
4A0
2Y1
4A1
2Y2
4A2
2Y3
4A3
1
4Y0
4Y1
4Y2
4Y3
PS8092B 07/14/00