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FXLH42245 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - Low Voltage Dual Supply 8-Bit Signal Translator with Configurable Voltage Supplies and Bushold Data Inputs and 3-STATE Outputs and 26 Series Resisto - Fairchild Semiconductor

भाग संख्या FXLH42245
समारोह Low Voltage Dual Supply 8-Bit Signal Translator with Configurable Voltage Supplies and Bushold Data Inputs and 3-STATE Outputs and 26 Series Resisto
मैन्युफैक्चरर्स Fairchild Semiconductor 
लोगो Fairchild Semiconductor लोगो 
पूर्व दर्शन
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<?=FXLH42245?> डेटा पत्रक पीडीएफ

FXLH42245 pdf
Pin Descriptions
Connection Diagram
Pin Names
Description
OE
T/R
A0 - A7
B0 - B7
VCCA
VCCB
GND
Output Enable Input
Transmit/Receive Input
Side A Input or 3-STATE Output
Side B Input or 3-STATE Output
Side A Power Supply
Side B Power Supply
Ground
Truth Table
Terminal Assignments for DQFN
Inputs
Outputs
OE T/R
LL
LH
H
H = HIGH Voltage Level
L = LOW Voltage Level
X = Don’t Care
X
Bus B Data to Bus A
Bus A Data to Bus B
3-STATE
(Top Through View)
Pin Assignments
Pin Number
1
2
3
4
5
6
7
8
9
10
11
12
Pin Name
VCCA
T/R
A0
A1
A2
A3
A4
A5
A6
A7
GND
GND
Pin Number
13
14
15
16
17
18
19
20
21
22
23
24
Pin Name
GND
B7
B6
B5
B4
B3
B2
B1
B0
OE
VCCB
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 the 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 the other VCC.
www.fairchildsemi.com
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अनुशंसा डेटापत्रक

भाग संख्याविवरणविनिर्माण
FXLH42245Low Voltage Dual Supply 8-Bit Signal Translator with Configurable Voltage Supplies and Bushold Data Inputs and 3-STATE Outputs and 26 Series ResistoFairchild Semiconductor
Fairchild Semiconductor


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