PI74ALVTC16244 Datasheet, PDF (1/8 Pages) Pericom Semiconductor Corporation – 1.8/2.5/3.3V 16-Bit Buffer/Driver with 3-State Outputs

PI74ALVTC16244
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1.8/2.5/3.3V 16-Bit Buffer/Driver
with 3-State Outputs
Product Features
Product Description
• PI74ALVTC family is designed for low voltage operation,
VDD = 1.8V to 3.6V
• Supports Live Insertion
• 3.6V I/O Tolerant Inputs and Outputs
• Bus Hold
• High Drive, -32/64mA @ 3.3V
• Uses patented noise reduction circuitry
• Power-off high impedance inputs and outputs
• Industrial operation at –40°C to +85°C
• Packages available:
– 48-pin 240 mil wide plastic TSSOP (A)
– 48-pin 173 mil wide plastic TVSOP (K)
– 48-pin 300 mil wide plastic SSOP (V)
Pericom Semiconductor’s PI74ALVTC series of logic circuits
are produced in the Company’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 “Bus Hold,” which retains the data
input’s last state whenever the data input goes to high-impedance,
preventing “floating” inputs and eliminating the need for pullup/
down resistors.
Logic Block Diagram
1OE ¹
1A1 ⁴⁷
46
1A2
44
1A3
43
1A4
2 _1Y1
3
1Y2
5
1Y3
6
1Y4
3OE ²⁵
3A1 ³⁶
35
3A2
33
3A3
32
3A4
13 _3Y1
14
3Y2
16
3Y3
17
3Y4
2OE ⁴⁸
41
2A1
40
2A2
38
2A3
37
2A4
8 _2Y1
9 _2Y2
11 _2Y3
12 _2Y4
24
4OE
30
4A1
29
4A2
27
4A3
26
4A4
19
4Y1
20
4Y2
22
4Y3
23
4Y4
1
PS8159D 11/23/98