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FXL2T245 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - Low Voltage Dual Supply 2-Bit Signal Translator with Configurable Voltage Supplies and Signal Levels and 3-STATE Outputs - Fairchild Semiconductor

भाग संख्या FXL2T245
समारोह Low Voltage Dual Supply 2-Bit Signal Translator with Configurable Voltage Supplies and Signal Levels and 3-STATE Outputs
मैन्युफैक्चरर्स Fairchild Semiconductor 
लोगो Fairchild Semiconductor लोगो 
पूर्व दर्शन
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<?=FXL2T245?> डेटा पत्रक पीडीएफ

FXL2T245 pdf
Pin Descriptions
Pin Names
Description
OE
T/R
An
Bn
VCCA
VCCB
GND
Output Enable Input
Transmit/Receive Input
Side A Inputs or 3-STATE Outputs
Side B Inputs or 3-STATE Outputs
Side A Power Supply
Side B Power Supply
Ground
Truth Table
Inputs
OE T/R
LL
L
H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
H
Outputs
Bus B Data to Bus A
Bus A Data to Bus B
Connection Diagram
Pin Assignments for MicroPak
(Top View)
Pin Assignment
Pin Number
1
2
3
4
5
6
7
8
9
10
Terminal Name
VCCA
A0
A1
T/R
GND
GND
OE
B1
B0
VCCB
Power-Up/Power-Down Sequencing
FXL translators offer an advantage in that either VCC may
be powered up first. This benefit derives from the chip
design. When either VCC is at 0 volts, outputs are in a
HIGH-Impedance state. The control inputs (T/R and OE)
are designed to track the VCCA supply. A pull-up resistor
tying OE to VCCA should be used to ensure that bus con-
tention, excessive currents, or oscillations do not occur
during power-up/power-down. The size of the pull-up resis-
tor is based upon the current-sinking capability of the OE
driver.
The recommended power-up sequence is the following:
1. Apply power to either VCC.
2. Apply power to the T/R input (Logic HIGH for A-to-B
operation; Logic LOW for B-to-A operation) and to the
respective data inputs (A Port or B Port). This may
occur at the same time as Step 1.
3. Apply power to other VCC.
4. Drive the OE input LOW to enable the device.
The recommended power-down sequence is the following:
1. Drive OE input HIGH to disable the device.
2. Remove power from either VCC.
3. Remove power from other VCC.
www.fairchildsemi.com
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भाग संख्याविवरणविनिर्माण
FXL2T245Low Voltage Dual Supply 2-Bit Signal Translator with Configurable Voltage Supplies and Signal Levels and 3-STATE OutputsFairchild Semiconductor
Fairchild Semiconductor


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