資料介紹
MM54HC251/MM74HC251
8-Channel TRI-STATEé Multiplexer
General Description
This 8-channel digital multiplexer with TRI-STATE outputs
utilizes advanced silicon-gate CMOS technology. Along with
the high noise immunity and low power consumption of
standard CMOS integrated circuits, it possesses the ability
to drive 10 LS-TTL loads. The large output drive capability
and TRI-STATE feature make this part ideally suited for interfacing
with bus lines in a bus oriented system.
This multiplexer features both true (Y) and complement (W)
outputs as well as a STROBE input. The STROBE must be
at a low logic level to enable this device. When the STROBE
input is high, both outputs are in the high impedance state.
When enabled, address information on the data select inputs
determines which data input is routed to the Y and W
outputs. The 54HC/74HC logic family is speed, function, as
well as pinout compatible with the standard 54LS/74LS logic
family. All inputs are protected from damage due to static
discharge by internal diode clamps to VCC and ground.
8-Channel TRI-STATEé Multiplexer
General Description
This 8-channel digital multiplexer with TRI-STATE outputs
utilizes advanced silicon-gate CMOS technology. Along with
the high noise immunity and low power consumption of
standard CMOS integrated circuits, it possesses the ability
to drive 10 LS-TTL loads. The large output drive capability
and TRI-STATE feature make this part ideally suited for interfacing
with bus lines in a bus oriented system.
This multiplexer features both true (Y) and complement (W)
outputs as well as a STROBE input. The STROBE must be
at a low logic level to enable this device. When the STROBE
input is high, both outputs are in the high impedance state.
When enabled, address information on the data select inputs
determines which data input is routed to the Y and W
outputs. The 54HC/74HC logic family is speed, function, as
well as pinout compatible with the standard 54LS/74LS logic
family. All inputs are protected from damage due to static
discharge by internal diode clamps to VCC and ground.
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