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SN74LS221N

单稳态多谐振荡器, 74LS221, 45 ns, 8 mA, 4.75 V至5.25 V, DIP-16

TEXAS INSTRUMENTS SN74LS221N

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制造商产品编号:
SN74LS221N
库存编号
3006704

产品概述

The SN74LS221N is a dual Monostable Multivibrator with schmitt-trigger inputs. Its performance characteristics virtually identical to those of the '121 devices. Each multivibrator features a negative-transition- triggered input and a positive-transition-triggered input, either of which can be used as an inhibit input. Pulse triggering occurs at a particular voltage level and is not directly related to the transition time of the input pulse. Schmitt-trigger input circuitry for B input allows jitter-free triggering from inputs with transition rates as slow as 1V/s, providing the circuit with excellent noise immunity, typically of 1.2V. A high immunity to VCC noise, typically of 1.5V, is also provided by internal latching circuitry. Once fired, the outputs are independent of further transitions of the A and B inputs and are a function of the timing components or the output pulses can be terminated by the overriding clear. Input pulses can be of any duration relative to the output pulse.
  • Overriding clear terminates output pulse

应用

工业

产品信息

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:
74LS221

:
单稳态

:
8mA

:
4.75V

:
5.25V

:
DIP

:
16引脚

:
45ns

:
74LS

:
74221

:
0°C

:
70°C

:
-

:
-

:
-
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