IDT74LVCH2244A Datasheet, PDF (1/6 Pages) Integrated Device Technology – 3.3V CMOS OCTAL BUFFER/DRIVER WITH 3- STATE OUTPUTS, 5 VOLT TOLERANT I/O, BUS-HOLD

IDT74LVC2244A
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, BUS-HOLD
INDUSTRIAL TEMPERATURE RANGE
IDT74LVCH2244A
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 QSOP and TSSOP packages
DRIVE FEATURES:
• Balanced Output Drivers: ±12mA
• Low switching noise
APPLICATIONS:
• 5V and 3.3V mixed voltage systems
• Data communication and telecommunication systems
DESCRIPTION:
This octal buffer/driver is built using advanced dual metal CMOS technol-
ogy. The LVCH2244A 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 LVCH2244A 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 ±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 environment.
The LVCH2244A has “bus-hold” which retains the inputs’ last state
whenever the input goes to a high impedance. This prevents floating inputs
and eliminates the need for pull-up/down resistors.
FUNCTIONAL BLOCK DIAGRAM
1
1OE
1A1 ²
1A2 ⁴
1A3 ⁶
1A4 ⁸
18 _1Y1
16 _1Y2
14
1Y3
12 _1Y4
19
2OE
2A1 ¹¹
2A2 ¹³
2A3 ¹⁵
2A4 ¹⁷
9 _2Y1
7 _2Y2
5
2Y3
3 _2Y4
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
1
© 2004 Integrated Device Technology, Inc.
JANUARY 2004
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