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74HC27 pdf datasheet
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格式:rar |
大小:666 |
2008-08-06
刘高
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MM54HC27/MM74HC27
Triple 3-Input NOR Gate
General Description
These NOR gates utilize advanced silicon-gate CMOS technology,
to achieve operating speeds similar to LS-TTL gates
with the low power consumption of standard CMOS integrated
circuits. All gates have buffered outputs, providing
high noise immunity and the ability to drive 10 LS-TTL loads.
The 54HC/74HC logic family is functionally 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.
Features
Y Typical propagation delay: 8 ns
Y Wide operating supply voltage range: 2±6V
Y Low input current: k 1 mA
Y Low quiescent supply current: 20 mA maximum
(74HC Series)
Y Fanout of 10 LS-TTL Loads
Triple 3-Input NOR Gate
General Description
These NOR gates utilize advanced silicon-gate CMOS technology,
to achieve operating speeds similar to LS-TTL gates
with the low power consumption of standard CMOS integrated
circuits. All gates have buffered outputs, providing
high noise immunity and the ability to drive 10 LS-TTL loads.
The 54HC/74HC logic family is functionally 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.
Features
Y Typical propagation delay: 8 ns
Y Wide operating supply voltage range: 2±6V
Y Low input current: k 1 mA
Y Low quiescent supply current: 20 mA maximum
(74HC Series)
Y Fanout of 10 LS-TTL Loads
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