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DS3486,pdf,datasheet (Quad RS-
消耗积分:5 |
格式:rar |
大小:555 |
2009-10-20
王磊
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National's quad RS-422, RS-423 receiver features four independent
receivers which comply with EIA Standards for the
electrical characteristics of balanced/unbalanced voltage digital
interface circuits. Receiver outputs are 74LS compatible,
TRI-STATE® structures which are forced to a high impedance
state when the appropriate output control pin reaches a logic
zero condition. A PNP device buffers each output control pin
to assure minimum loading for either logic one or logic zero
inputs. In addition, each receiver has internal hysteresis circuitry
to improve noise margin and discourage output instability
for slowly changing input waveforms.
receivers which comply with EIA Standards for the
electrical characteristics of balanced/unbalanced voltage digital
interface circuits. Receiver outputs are 74LS compatible,
TRI-STATE® structures which are forced to a high impedance
state when the appropriate output control pin reaches a logic
zero condition. A PNP device buffers each output control pin
to assure minimum loading for either logic one or logic zero
inputs. In addition, each receiver has internal hysteresis circuitry
to improve noise margin and discourage output instability
for slowly changing input waveforms.
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