参数资料
型号: FXL4245MPX
厂商: Fairchild Semiconductor
文件页数: 11/11页
文件大小: 0K
描述: TRANSLATOR 8BIT DUAL 24MLP
产品培训模块: Logic Translator Solutions
标准包装: 1
逻辑功能: 变换器,双向,3 态
位数: 8
输入类型: 电压
输出类型: 电压
通道数: 1
输出/通道数目: 8
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: 24-WFQFN 裸露焊盘
供应商设备封装: 24-MLP(3.5x4.5)
包装: 标准包装
产品目录页面: 1220 (CN2011-ZH PDF)
其它名称: FXL4245MPXDKR
2004 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FXL4245 Rev. 1.0.3
9
FXL4245
Low-Voltage,
Dual-Suppl
y,
8-Bit,
Signal
Translator
Functional Description
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 0V, 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
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:
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:
1.
Drive OE input HIGH to disable the device.
2.
Remove power from either VCC.
3.
Remove power from the other VCC.
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