MC 系列 3.3 V 表面贴装 ECL 时钟发生芯片 - SOIC-20WB
The MC100LVEL39 is a low skew 2/4, 4/6 clock generation chip designed explicitly for low skew clock generation applications. The internal dividers are synchronous to each other, therefore, the common output edges are all precisely aligned. The device can be driven by either a differential or single-ended input signal. In addition, by using the VBB output, a sinusoidal source can be AC coupled into the device. The common enable ENbar is synchronous so that the internal dividers will only be enabled/disabled when the internal clock is already in the LOW state. This avoids any chance of generating a runt clock pulse on the internal clock when the device is enabled/disabled as can happen with an asynchronous control. An internal runt pulse could lead to losing synchronization between the internal divider stages. The internal enable flip-flop is clocked on the falling edge of the input clock, therefore, all associated specification limits are referenced to the negative edge of the clock input. Upon startup, the internal flip-flops will attain a random state; therefore, for systems which utilize multiple LVEL39s, the master reset MR input must be asserted to ensure synchronization. For systems which only use one LVEL39, the MR pin need not be exercised as the internal divider design ensures synchronization between the 2/4 and the 4/6 outputs of a single device. pin, an internally generated voltage supply, is available to this device only. For single-ended input conditions, the unused differential input is connected to V as a switching reference voltage. V may also rebias AC coupled inputs. When used, decouple V via a 0.01 F capacitor and limit current sourcing or sinking to 0.5 mA. When not used, V
Features
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with VEE = 0 V
with VEE = -3.0 V to -3.8 V
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型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
MC100LVEL39DWR2G ON Semiconductor 安森美 | 当前型号 | 当前型号 |
MC100LVEL39DWG 安森美 | 完全替代 | MC100LVEL39DWR2G和MC100LVEL39DWG的区别 |
MC100EL39DW 安森美 | 完全替代 | MC100LVEL39DWR2G和MC100EL39DW的区别 |
MC100EL39DWR2G 安森美 | 类似代替 | MC100LVEL39DWR2G和MC100EL39DWR2G的区别 |