IDT74LVC244A_08 Datasheet, PDF (1/6 Pages) Integrated Device Technology – 3.3V CMOS OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS,5 VOLT TOLERANT I/O

IDT74LVC244A
3.3V CMOS OCTAL BUFFER/DRIVER WITH 3-STATE OUTPUTS
3.3V CMOS
OCTAL BUFFER/DRIVER
WITH 3-STATE OUTPUTS,
5 VOLT TOLERANT I/O
INDUSTRIAL TEMPERATURE RANGE
IDT74LVC244A
FEATURES:
• 0.5 MICRON CMOS Technology
• ESD > 2000V per MIL-STD-883, Method 3015; > 200V using
machine model (C = 200pF, R = 0)
• VCC = 3.3V ± 0.3V, Normal Range
• VCC = 2.7V to 3.6V, Extended Range
• CMOS power levels (0.4μ W typ. static)
• Rail-to-rail output swing for increased noise margin
• All inputs, outputs, and I/O are 5V tolerant
• Supports hot insertion
• Available in SOIC, SSOP, QSOP, and TSSOP packages
DRIVE FEATURES:
• High Output Drivers: ±24mA
• Reduced system switching noise
APPLICATIONS:
• 5V and 3.3V mixed voltage systems
• Data communication and telecommunication systems
DESCRIPTION:
The LVC244A 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.
The LVC244A has been designed with a ±24mA output driver. This
driver is capable of driving a moderate to heavy load while maintaining
speed performance.
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.
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 environment.
FUNCTIONAL BLOCK DIAGRAM
1
1OE
1A1 ²
1A2 ⁴
1A3 ⁶
1A4 ⁸
19
2OE
18 _1Y1
16 _1Y2
14
1Y3
12 _1Y4
2A1 ¹¹
2A2 ¹³
2A3 ¹⁵
2A4 ¹⁷
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
© 1999 Integrated Device Technology, Inc.
9 _2Y1
7 _2Y2
5
2Y3
3
2Y4
OCTOBER 2008
DSC-4614/3