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PDF PI74LPT16244 Data sheet ( Hoja de datos )
| Número de pieza | PI74LPT16244 | |
| Descripción | 3.3V/ 16-Bit Buffer/Line Driver | |
| Fabricantes | Pericom Semiconductor Corporation | |
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PI74LPT16244
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Product Features:
Compatible with LCX and LVT families of products
Supports 5V Tolerant Mixed Signal Mode Operation
Input can be 3V or 5V
Output can be 3V or connected to 5V bus
Advanced Low Power CMOS Operation
Excellent output drive capability:
Balanced drives (24 mA sink and source)
Pin compatible with industry standard double-density
pinouts
Low ground bounce outputs
Hysteresis on all inputs
Industrial operating temperature range: 40°C to +85°C
Multiple center pins and distributed Vcc/GND pins
minimize switching noise
Packages available:
48-pin 240 mil wide thin plastic TSSOP (A)
48-pin 300 mil wide plastic SSOP (V)
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Product Description:
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Pericom Semiconductors PI74LPT series of logic circuits are pro-
duced in the Companys advanced 0.6 micron CMOS technology,
achieving industry leading speed grades.
The PI74LPT16244 is a 16-bit buffer/line driver designed for driving
high capacitive memory loads. With its balanced-drive characteristics,
this high-speed, low power device provides lower ground bounce,
transmission line matching of signals, fewer line reflections and
lower EMI and RFI effects. This makes it ideal for driving on-board
buses and transmission lines. This device is designed with three-
state controls to operate in a Quad-Nibble, Dual-Byte, or a single 16-
bit word mode.
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The PI74LPT16244 can be driven from either 3.3V or 5.0V devices
allowing this device to be used as a translator in a mixed
3.3/5.0V system.
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Logic Block Diagram
1OE
1A0
3OE
1Y0 3A0
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83Y0
91A1 1Y1 3A1 3Y1
101A2 1Y2 3A2 3Y2
111A3 1Y3 3A3 3Y3
2OE
2A0
2A1
2A2
2A3
4OE
2Y0 4A0
2Y1 4A1
2Y2 4A2
2Y3 4A3
12
134Y0
144Y1
4Y2
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4Y3
1 PS2067A 01/15/97
1 page  
PI74LPT16244
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Switching Characteristics over Operating Range(1)
Parameters Description
Conditions(2)
LPT16244
Com.
Min(3) Max
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
tSK(o)
Propagation Delay
XAX to XYX
Output Enable Time
xOE to xYx
Output Disable Time(4)
xOE to xYx
Output Skew(5)
CL = 50 pF
RL = 500Ω
1.5 5.2
1.5 7.0
1.5 7.0
0.5
LPT16244A
Com.
Min(3) Max
1.5 4.8
1.5 6.2
1.5 5.6
0.5
LPT16244C
Com.
Min(3) Max
1.5 4.1
1.5 5.8
1.5 5.2
0.5
Unit
ns
ns
ns
ns
Notes:
1. Propagation Delays and Enable/Disable times are with Vcc = 3.3V ±0.3V, normal range. For Vcc = 2.7V, extended range, all
Propagation Delays and Enable/Disable times should be degraded by 20%.
2. See test circuit and wave forms.
3. Minimum limits are guaranteed but not tested on Propagation Delays.
4. This parameter is guaranteed but not production tested.
5. Skew between any two outputs, of the same package, switching in the same direction. This parameter is guaranteed by design.
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Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
5 PS2067A 01/15/97
5 Page | ||
| Páginas | Total 5 Páginas | |
| PDF Descargar | [ Datasheet PI74LPT16244.PDF ] | |
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