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PI74ALVCH16827 Datasheet

  • PI74ALVCH16827

  • 20-Bit Buffer/Driver with 3-STATE Outputs

  • 298.71KB

  • 4頁

  • PERICOM   PERICOM

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PI74ALVCH16827
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21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
20-Bit Buffer/Driver
with 3-STATE Outputs
Product Features
鈥?/div>
PI74ALVCH16827 is designed for low voltage operation
鈥?/div>
V
CC
= 2.3V to 3.6V
鈥?/div>
Hysteresis on all inputs
鈥?/div>
Typical V
OLP
(Output Ground Bounce)
< 0.8V at V
CC
= 3.3V, T
A
= 25擄C
鈥?/div>
Typical V
OHV
(Output V
OH
Undershoot)
< 2.0V at V
CC
= 3.3V, T
A
= 25擄C
鈥?/div>
Bus Hold retains last active bus state during 3-STATE,
eliminating the need for external pullup resistors
鈥?/div>
Industrial operation at 聳40擄C to +85擄C
鈥?/div>
Packages available:
聳 56-pin 240 mil wide plastic TSSOP (A)
聳 56-pin 300 mil wide plastic SSOP (V)
Product Description
Pericom Semiconductor鈥檚 PI74ALVCH series of logic circuits are
produced in the Company鈥檚 advanced 0.5 micron CMOS technology,
achieving industry leading speed grades.
The PI74ALVCH16827 is a 20-bit non-inverting buffer/driver
designed for 2.3V to 3.6V Vcc operation.
The buffer/driver is composed of two 10-bit sections with separate
output-enable signals. For either 10-bit buffer section, the two
output-enable (1OE1 and 1OE2 or 2OE1 and 2OE2 inputs must both
be low for the corresponding Y outputs to be active. If either output-
enable input is HIGH, the outputs of that 10-bit buffer section are
in the high-impedance state.
To ensure the high-impedance state during power up or power
down, OE should be tied to Vcc through a pull-up resistor; the
minimum value of the resistor is determined by the current sinking
ability of the driver.
The PI74ALVCH16827 has the 鈥淏us Hold鈥?which retains the data
input鈥檚 last state whenever the data input goes to high-impedance
preventing 鈥榝loating鈥?inputs and eliminating the need for pullup/
down resistors.
Logic Block Diagram
1
56
28
29
1
OE
1
1
OE
2
2
OE
1
2
OE
2
2
1
A
1
55
1
Y
1
2
A
1
42
15
2
Y
1
To 9 other channels
To 9 other channels
1
PS8091A 03/26/97

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