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PDF PI74ALVCH16244A Data sheet ( Hoja de datos )
| Número de pieza | PI74ALVCH16244A | |
| Descripción | 16-Bit Buffer Driver with 3-State Outputs | |
| Fabricantes | Pericom Semiconductor Corporation | |
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16-Bit Buffer Driver
with 3-State Outputs
Features
• Designed for low-voltage operation
• VCC = 2.3V to 3.6V
• Hysteresis on all inputs
• Typical VOLP (Output Ground Bounce)
< 0.8V at VCC = 3.3V, TA = 25°C
• Typical VOHV (Output VOH Undershoot)
< 2.0V at VCC = 3.3V, TA = 25°C
• 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
• Packaging:
– 48-pin 240-mil wide plastic TSSOP (A)
Description
Pericom Semiconductor’s PI74ALVCH16244 is an non-inverting
16-bit buffer/driver designed for low-voltage 2.3V to 3.6V VCC
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 non-inverting outputs and symmetri-
cal active-low output-enable (OE) inputs.
To ensure the high-impedance state during power up or power
down, OE should be tied to VCC through a pullup resistor in which
the minimum value is determined by the current-sinking capability
of the driver.
The PI74ALVCH16244 has “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.
Block Diagram
1OE 1
1A1 47
1A2 46
1A3 44
1A4 43
2OE 48
2A1 41
2A2 40
2A3 38
2A4 37
2 1Y1
3 1Y2
5 1Y3
6 1Y4
8 2Y1
9 2Y2
11 2Y3
12
2Y4
3OE 25
3A1 36
3A2 35
3A3 33
3A4 32
4OE 24
4A1 30
4A2 29
4A3 27
4A4 26
13 3Y1
14 3Y2
16 3Y3
17 3Y4
19 4Y1
20
4Y2
22
4Y3
23
4Y4
1 PS8087C 10/05/04
1 page  
PI74ALVCH16244
16-Bit Buffer Driver
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Packaging Mechanical 48-pin TSSOP (A)
48
1
.488 12.4
.496 12.6
X.XX DENOTES DIMENSIONS
X.XX IN MILLIMETERS
.0197
BSC
0.50
.236 6.0
.244 6.2
.047
1.20 Max
SEATING PLANE
.007
.010
.002
.006
0.05
0.17 0.15
0.27
0.45 .018
0.75 .030
.319 BSC
8.1
.004 0.09
.008 0.20
Ordering Information
Ordering Code
Package Code
Package Type
PI74ALVCH16244A
A
48-pin TSSOP
Notes:
1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com
5
PS8087C 10/05/04
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet PI74ALVCH16244A.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| PI74ALVCH16244 | 16-Bit Buffer Driver with 3-State Outputs | Pericom Semiconductor Corporation |
| PI74ALVCH16244A | 16-Bit Buffer Driver with 3-State Outputs | Pericom Semiconductor Corporation |
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