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PDF IDT74LVC2245A Data sheet ( Hoja de datos )

Número de pieza IDT74LVC2245A
Descripción CMOS OCTAL BUS TRANSCEIVER
Fabricantes IDT 
Logotipo IDT Logotipo



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IDT74LVC2245A Hoja de datos, Descripción, Manual
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IDT74LVC2245A
3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
3.3V CMOS
OCTAL BUS TRANSCEIVER
WITH 3-STATE OUTPUTS
AND 5 VOLT TOLERANT I/O
INDUSTRIALTEMPERATURERANGE
IDT74LVC2245A
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
• Available in SOIC, SSOP, QSOP, and TSSOP packages
DRIVE FEATURES:
• Balanced Output Drivers: ±12mA (B Port)
• High Output Drivers: ±24mA (A Port)
DESCRIPTION:
This bus transceiver is built using advanced dual metal CMOS technol-
ogy. The LVC2245A device is designed for asynchronous communication
between data buses. The device transmits data from the A bus to the B bus
or from the B bus to the A bus, depending on the logic level at the direction-
control (DIR) input. The output-enable (OE) input can be used to disable
the device so the buses are effectively isolated.
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 environment.
The LVC2245A has series resistors in the device output structure of the
"B" port which will significantly reduce line noise when used with light loads.
The driver has been designed to drive ±12mA at the designated threshold
levels.
APPLICATIONS:
• 5V and 3.3V mixed voltage systems
• Data communication and telecommunication systems
FUNCTIONAL BLOCK DIAGRAM
1
DIR
A1 2
19 OE
18
B1
TO SEVEN OTHER CHANNELS
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
© 2000 Integrated Device Technology, Inc.
1
FEBRUARY 2000
DSC-4607/1

1 page

IDT74LVC2245A pdf
IDT74LVC2245A
3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS
SWITCHING CHARACTERISTICS (B PORT)(1)
Symbol
Parameter
VCC = 2.7V
Min. Max.
tPLH PropagationDelay
— 8.1
tPHL Ax to Bx
tPZH OutputEnableTime
— 10
tPZL OE to Bx
tPHZ OutputDisableTime
— 9.2
tPLZ OE to Bx
tSK(o)
Output Skew(2)
——
NOTES:
1. See TEST CIRCUITS AND WAVEFORMS. TA = – 40°C to + 85°C.
2. Skew between any two outputs of the same package and switching in the same direction.
INDUSTRIALTEMPERATURERANGE
VCC = 3.3V ± 0.3V
Min. Max.
1.5 7.1
1.5 9
1.7 8.2
500
Unit
ns
ns
ns
ps
5

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