PI74LPT244
Fast CMOS 3.3V 8-Bit
Buffer/Line Driver
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 (24mA sink and source)
• Low ground bounce outputs
• Hysteresis on all inputs
• Industrial operating temperature range: –40°C to +85°C
• Packages (Pb-free & Green available):
– 20-pin 173-mil wide plastic TSSOP (L)
– 20-pin 150-mil wide plastic QSOP (Q)
– 20-pin 300-mil wide plastic SOIC (S)
– 20-pin 209-mil wide plastic SSOP (H)
Description
Pericom Semiconductor’s PI74LPT244 is an 8-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.
The PI74LPT244 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.
Block Diagram
Pin Configuration
OE
A
DA
0
OB
0
DA
1
OB
1
DA
2
OB
2
DA
3
OB
3
GND
1
20
2
19
3
18
4
20-PIN
17
L20
16
5
Q20
15
6
S20
7
14
8
13
9
12
10
11
V
CC
OE
B
OA
0
DB
0
OA
1
DB
1
OA
2
DB
2
OA
3
DB
3
06-0181
1
PS2058F
06/05/06
PERICOM [ PERICOM SEMICONDUCTOR CORPORATION ]
