MC10H123

三重4-3-3 ，输入总线驱动器 Triple 4−3−3−Input Bus Driver

The is a triple 4-3-3-Input Bus Driver. The MC10H123 consists of three NOR gates designed for bus driving applications on card or between cards. Output low logic levels are specified with V = -2.1 Vdc so that the bus may be terminated to -2.0 Vdc. The gate output, when low, appears as a high impedance to the bus, because the output emitter-followers of the MC10H123 are "turned-off." This eliminates discontinuities in the characteristic impedance of the bus. level is specified when driving a 25-ohm load terminated to -2.0 Vdc, the equivalent of a 50-ohm bus terminated at both ends. Although 25 ohms is the lowest characteristic impedance that can be driven by the MC10H123, higher impedance values may be used with this part. A typical 50-ohm bus is shown in Figure 1.

Features

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Propagation Delay, 1.5 ns Typical

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Improved Noise Margin 150 mV Over Operating Voltage and Temperature Range

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Voltage Compensated

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MECL 10K-Compatible

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Pb-Free Packages are Available