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PI74ALVTC16244 Datasheet

  • PI74ALVTC16244

  • 1.8/2.5/3.3V 16-Bit Buffer/Driver with 3-State Outputs

  • 238.58KB

  • 8頁(yè)

  • PERICOM   PERICOM

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PI74ALVTC16244
1.8/2.5/3.3V 16-Bit Buffer/Driver
with 3-State Outputs
Product Features
聲 PI74ALVTC family is designed for low voltage operation,
V
DD
= 1.8V to 3.6V
聲 Supports Live Insertion
聲 3.6V I/O Tolerant Inputs and Outputs
聲 Bus Hold
聲 High Drive, -32/64mA @ 3.3V
聲 Uses patented noise reduction circuitry
聲 Power-off high impedance inputs and outputs
聲 Industrial operation at 聳40擄C to +85擄C
聲 Packages available:
聳 48-pin 240 mil wide plastic TSSOP (A)
聳 48-pin 173 mil wide plastic TVSOP (K)
聳 48-pin 300 mil wide plastic SSOP (V)
Product Description
Pericom Semiconductor聮s PI74ALVTC series of logic circuits
are produced in the Company聮s advanced 0.35 micron CMOS
technology, achieving industry leading speed.
The PI74ALVTC16244 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 true 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 Vdd through a pullup resistor; the
minimum value of the resistor is determined by the current-sinking
capability of the driver.
The family offers both I/O Tolerant, which allows it to operate in
mixed 1.8/3.6V systems, and
鈥淏us Hold,鈥?which retains the data
input鈥檚 last state whenever the data input goes to high-impedance,
preventing 鈥渇loating鈥?inputs and eliminating the need for pullup/
down resistors.
Logic Block Diagram
1
OE
1
3
OE
25
1
A
1
47
2
1
Y
1
3
A
1
36
13
3
Y
1
1
A
2
46
3
1
Y
2
3
A
2
35
14
3
Y
2
1
A
3
44
5
1
Y
3
3
A
3
33
16
3
Y
3
1
A
4
43
6
1
Y
4
3
A
4
32
17
3
Y
4
2
OE
48
4
OE
24
2
A
1
41
8
2
Y
1
4
A
1
30
19
4
Y
1
2
A
2
40
9
29
2
Y
2
4
A
2
20
4
Y
2
2
A
3
38
11
2
Y
3
4
A
3
27
22
4
Y
3
2
A
4
37
12
26
2
Y
4
4
A
4
23
4
Y
4
1
PS8159D
11/23/98

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