IDT74LVC2244A
3.3V CMOS OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS
INDUSTRIAL TEMPERATURE RANGE
3.3V CMOS OCTAL
BUFFER/DRIVER WITH 3-
STATE OUTPUTS
AND 5 VOLT TOLERANT I/O
鈥?0.5 MICRON CMOS Technology
鈥?ESD > 2000V per MIL-STD-883, Method 3015; > 200V using
machine model (C = 200pF, R = 0)
鈥?V
CC
= 3.3V 鹵 0.3V, Normal Range
鈥?V
CC
= 2.7V to 3.6V, Extended Range
鈥?CMOS power levels (0.4碌 W typ. static)
碌
鈥?Rail-to-rail output swing for increased noise margin
鈥?All inputs, outputs, and I/O are 5V tolerant
鈥?Available in SOIC, SSOP, QSOP, and TSSOP packages
IDT74LVC2244A
FEATURES:
DESCRIPTION:
DRIVE FEATURES:
APPLICATIONS:
鈥?Balanced Output Drivers: 鹵12mA
鈥?Low switching noise
This octal buffer/driver is built using advanced dual metal CMOS
technology. The LVC2244A device is organized as two 4-bit line drivers
with separate output-enable (OE) inputs. When
OE
is low, the device
passes data from the A inputs to the Y outputs. When
OE
is high, the outputs
are in the high-impedance state.
To ensure the high-impedance state during power up or power down,
OE
should be tied to Vcc through a pullup resistor; the minimum value of
the resistor is determined by the current-sinking capability of the driver.
The LVC2244A has series resistors in the device output structure which
will significantly reduce line noise when used with light loads. This driver
has been designed to drive 鹵12mA at the designated threshold levels.
Inputs can be driven from either 3.3V or 5V devices. This feature allows
the use of this device as a translator in a mixed 3.3V/5V system environ-
ment.
鈥?5V and 3.3V mixed voltage systems
鈥?Data communication and telecommunication systems
FUNCTIONAL BLOCK DIAGRAM
1
OE
1
2
OE
19
1A1
2
18
1
Y
1
2
A
1
11
9
2
Y
1
1A2
4
16
1
Y
2
2
A
2
13
7
2
Y
2
1
A
3
6
14
1
Y
3
2
A
3
15
5
2
Y
3
1
A
4
8
12
1
Y
4
2
A
4
17
3
2
Y
4
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
漏 2000 Integrated Device Technology, Inc.
FEBRUARY 2000
DSC-4644/1
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