MC100LVEL91数据手册集成电路（IC）的转换器电平移位器规格书PDF

描述 Description

The MC100LVEL91 is a triple LVPECL input to ECL output translator. The device receives standard or low voltage differential PECL signals, determined by the VCC supply level, and translates them to differential -3.3 V to -5.0 V ECL output signals. (For translation from 5.0 V PECL to -5 V ECL output, see MC100EL91.)To accomplish the level translation the LVEL91 requires three power rails. The VCC supply should be connected to the positive supply, and the VEE pin should be connected to the negative power supply. The GND pins are connected to the system ground plane. Both VEE and VCC should be bypassed to ground via 0.01 µF capacitors. Under open input conditions, the Dbar input will be biased at VCC/2 and the D input will be pulled to GND. This condition will force the Q output to a low, ensuring stability.The VBB pin, an internally generated voltage supply, is available to this device only. For single-ended input conditions, the unused differential input is connected to VBB as a switching reference voltage.VBB may also rebias AC coupled inputs. When used, decouple VBB and VCC via a 0.01 µF capacitor and limit current sourcing or sinking to 0.5 mA. When not used, VBB should be left open.

特性 Features

• 620 ps Typical Propagation Delay
• The 100 Series Contains Temperature Compensation
• Operating Range: VCC = 3.8 V to 3.3 V; VEE = -3.0 V to -3.8 V; GND= 0 V
• Q Output will Default LOW with Inputs Open or at GND
• Pb-Free Packages are Available

简介

MC100LVEL91属于集成电路（IC）的转换器电平移位器。由制造生产的MC100LVEL91转换器，电平移位器逻辑转换器或电平移位器 IC 可用于在数字逻辑设备之间传递信息，这些设备可在不同/不兼容的供电电压下工作，或可实现不同的信令方式。例如，可以将需要 5 V 电源的数字输出传感器连接到具有 3.3 V I/O 电源的 FPGA，或者在 CMOS 或 TTL 等单端信令方式与 PECL 或 LVDS 等差分技术之间进行转换。