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参数资料
| 型号： | FXL2TD245L10X |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 5/12页 |
| 文件大小： | 0K |
| 描述： | TRANSLATOR 2BIT LV DL 10MICROPAK |
| 产品培训模块： | Logic Translator Solutions |
| 产品变化通告： | Die Material, Mold Compound Change 03/Oct/2008 |
| 标准包装： | 1 |
| 逻辑功能： | 变换器，3 态 |
| 位数： | 2 |
| 输入类型： | 电压 |
| 输出类型： | 电压 |
| 通道数： | 1 |
| 输出/通道数目： | 2 |
| 差分 - 输入:输出： | 无/无 |
| 传输延迟（最大）： | 3.5ns |
| 电源电压： | 1.1 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 10-UFQFN |
| 供应商设备封装： | 10-MicroPak? |
| 包装： | 标准包装 |
| 产品目录页面： | 1219 (CN2011-ZH PDF) |
| 其它名称： | FXL2TD245L10XDKR |
2005 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FXL2TD245 Rev. 1.0.4
2
FXL2TD245
Lo
w
V
olta
g
e
Dual
Suppl
y
2-Bit
Signal
T
ranslator
with
Congurab
le
V
olta
g
e
Supplies
and
Signal
Le
vels
and
3-ST
A
TE
Outputs
and
Independent
Direction
Contr
ols
Functional Diagram
Connection Diagram
(Top View)
Pin Assignment
Pin Descriptions
Truth Table
H
= HIGH Voltage Level
L
= LOW Voltage Level
X
= Don't Care
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/Rn and
OE) are 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/power-down. The size of the pull-
up resistor 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/Rn inputs (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 follow-
ing:
1. Drive OE input HIGH to disable the device.
2. Remove power from either VCC.
3. Remove power from other VCC.
Pin Number
Terminal Name
1VCCA
2A0
3A1
4
T/R0
5
GND
6
T/R1
7OE
8B1
9B0
10
VCCB
VCCA
A0
A1
T/R0
OE
T/R1
VCCB
B0
B1
9
8
7
6
2
10
1
VCCA
A0
A1
T/R0
B0
VCCB
GND
B1
OE
T/R1
5
3
4
Pin Names
Description
OE
Output Enable Input
T/Rn
Transmit/Receive Inputs
An
Side A Inputs or 3-STATE Outputs
Bn
Side B Inputs or 3-STATE Outputs
VCCA
Side A Power Supply
VCCB
Side B Power Supply
Inputs
Outputs
OE
T/R0 T/R1
LL
X
B0 Data to A0 Output
LH
X
A0 Data to B0 Output
LXL
B1 Data to A1 Output
LX
H
A1 Data to B1 Output
HX
X
3-STATE
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