FXLA104.pdf 데이터시트 (총 16 페이지) - 파일 다운로드 FXLA104 데이타시트 다운로드

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March 2009
FXLA104
Low-Voltage Dual-Supply 4-Bit Voltage Translator with
Configurable Voltage Supplies and Signal Levels,
3-State Outputs, and Auto Direction Sensing
Features
ƒ Bi-Directional Interface between Two Levels:
from 1.1V to 3.6V
ƒ Fully Configurable: Inputs and Outputs Track VCC
ƒ Non-Preferential Power-Up; Either VCC May Be
Powered Up First
ƒ Outputs Remain in 3-State Until Active VCC Level is
Reached
ƒ Outputs Switch to 3-State if Either VCC is at GND
ƒ Power-Off Protection
ƒ Bus-Hold on Data Inputs Eliminates the Need for
Pull-Up Resistors
ƒ Control Input (/OE) Referenced to VCCA Voltage
ƒ Packaged in 16-Terminal µMLP (1.8mm x 2.6mm)
ƒ Direction Control Not Necessary
ƒ 100Mbps Throughput when Translating Between
www.DataSheet41U..8cVomand 2.5V
ƒ ESD Protection Exceeds:
- 8kV HBM (per JESD22-A114 & Mil Std 883e
3015.7)
- 2kV CDM (per ESD STM 5.3)
Description
The FXLA104 is a configurable dual-voltage supply
translator for both uni-directional and bi-directional
voltage translation between two logic levels. The device
allows translation between voltages as high as 3.6V to
as low as 1.1V. The A port tracks the VCCA level and the
B port tracks the VCCB level. This allows for bi-directional
voltage translation over a variety of voltage levels: 1.2V,
1.5V, 1.8V, 2.5V, and 3.3V.
The device remains in three-state until both VCCs reach
active levels, allowing either VCC to be powered up first.
Internal power-down control circuits place the device in
3-state if either VCC is removed.
The /OE input, when HIGH, disables both the A and B
ports by placing them in a 3-state condition. The /OE
input is supplied by VCCA.
The FXLA104 supports bi-directional translation without
the need for a direction control pin. The two ports of the
device have auto-direction sense capability. Either port
may sense an input signal and transfer it as an output
signal to the other port.
Applications
ƒ Cell Phone, PDA, Digital Camera, Portable GPS
Ordering Information
Part Number
FXLA104UMX
Operating
Temperature
Range
-40 to 85°C
Eco
Status
Package
Green 16-Terminal µMLP 1.8 x2.6mm Package
Packing
Method
Tape and Reel
For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
© 2009 Fairchild Semiconductor Corporation
FXLA104 • Rev. 1.0.0
www.fairchildsemi.com

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Pin Configuration
B0 B1 B2 B3
12 11 10 9
VCCB 13
NC 14
NC 15
8 /OE
7 GND
6 GND
VCCA 16
5 NC
1 234
A0 A1 A2 A3
Figure 1. Pin Configuration (Top Through View)
Pin Definitions
Pin # Name
1 A0
2 A1
3 A2
4 A3
5 NC
6 GND
7 GND
www.DataShee8t4U.com /OE
9 B3
10 B2
11 B1
12 B0
13 VCCB
14 NC
15 NC
16 VCCA
Description
A-Side Inputs or 3-State Outputs
A-Side Inputs or 3-State Outputs
A-Side Inputs or 3-State Outputs
A-Side Inputs or 3-State Outputs
No Connect
Ground
Ground
Output Enable Input
B-Side Inputs or 3-State Outputs
B-Side Inputs or 3-State Outputs
B-Side Inputs or 3-State Outputs
B-Side Inputs or 3-State Outputs
B-Side Power Supply
No Connect
No Connect
A-Side Power Supply
© 2009 Fairchild Semiconductor Corporation
FLXA104 • Rev. 1.0.0
2
www.fairchildsemi.com

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Functional Diagram
Figure 2. Functional Diagram
Function Table
Control
/OE
LOW Logic Level
HIGH Logic Level
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Outputs
Normal Operation
3-State
© 2009 Fairchild Semiconductor Corporation
FLXA104 • Rev. 1.0.0
3
www.fairchildsemi.com

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Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device
reliability. The absolute maximum ratings are stress ratings only.
Symbol
Parameter
Conditions
VCC Supply Voltage
VI DC Input Voltage
VCCA
VCCB
I/O Ports A and B
Control Input (/OE)
Output 3-State
VO Output Voltage(2)
Output Active (An)
Output Active (Bn)
IIK DC Input Diode Current
VI<0V
IOK DC Output Diode Current
VO<0V
VO>VCC
IOH/IOL DC Output Source/Sink Current
ICC DC VCC or Ground Current (per Supply Pin)
TSTG
Storage Temperature Range
Notes:
1. IO absolute maximum ratings must be observed.
2. All unused inputs and input/outputs must be held at VCCi or GND.
Min.
-0.5
-0.5
-0.5
-0.5
-0.5
-0.5
-0.5
-50
-65
Max.
4.6
4.6
4.6
4.6
4.6
VCCA +0.5
VCCB +0.5
-50
-50
+50
+50
±100
+150
Unit
V
V
V
mA
mA
mA
mA
°C
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to Absolute Maximum Ratings.
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Symbol
Parameter
Conditions
Min.
Max.
Unit
VCC
VIN
TA
dt/dV
Power Supply
Input Voltage
Operating Temperature, Free Air
Minimum Input Edge Rate
Operating VCCA or VCCB
Ports A and B
Control Input (/OE)
VCCA/B = 1.1 to 3.6V
1.1 3.6
V
0 3.6 V
0 VCCA V
-40 +85
°C
10 ns/V
© 2009 Fairchild Semiconductor Corporation
FLXA104 • Rev. 1.0.0
4
www.fairchildsemi.com

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Power-Up/Power-Down Sequence
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 0V, outputs are in a
high-impedance state. The control input (/OE) is
designed to track the VCCA supply. A pull-up resistor
tying /OE to VCCA should be used to ensure that bus
contention, excessive currents, or oscillations do not
occur during power-up or power-down. The size of the
pull-up resistor is based upon the current-sinking
capability of the device driving the /OE pin.
The recommended power-up sequence is:
1. Apply power to the first VCC.
2. Apply power to the second VCC.
3. Drive the /OE input LOW to enable the device.
The recommended power-down sequence is:
1. Drive /OE input HIGH to disable the device.
2. Remove power from either VCC.
3. Remove power from other VCC.
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© 2009 Fairchild Semiconductor Corporation
FLXA104 • Rev. 1.0.0
5
www.fairchildsemi.com