Nexperia B.V. Dual non-retriggerable monostable multivibrator with reset 74HCT221D,118

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Dual non-retriggerable monostable multivibrator with reset - 74HCT221D,118 - Nexperia B.V.
Nijmegen, Netherlands
Dual non-retriggerable monostable multivibrator with reset
74HCT221D,118
Dual non-retriggerable monostable multivibrator with reset 74HCT221D,118
The 74HCT221 is a dual non-retriggerable monostable multivibrator. Each multivibrator features edge-triggered inputs (nA and nB), either of which can be used as an enable 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 the nB inputs allow jitter-free triggering from inputs with slow transition rates, providing the circuit with excellent noise immunity. Once triggered, the outputs (nQ, nQ) are independent of further transitions of nA and nB inputs. The output pulse width is defined by the following relationship: The output pulses can be terminated by the active LOW reset inputs (nRD). Pulse width stability is achieved through internal compensation and is virtually independent of VCC and temperature. In most applications pulse stability will only be limited by the accuracy of the external timing components . This device features reduced input threshold levels to allow interfacing to TTL logic levels. Inputs also include clamp diodes, this enables the use of current limiting resistors to interface inputs to voltages in excess of VCC. Features and benefits Supply voltage range from 4.5 V to 5.5 V CMOS low power dissipation High noise immunity Input levels: For 74HCT221: TTL level Pulse width variance is typically less than ±5% Direct reset terminates output pulse Schmitt-trigger action on nB inputs Latch-up performance exceeds 100 mA per JESD 78 Class II Level B ESD protection: HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V Specified from -40 °C to +85 °C and from -40 °C to +125 °C

The 74HCT221 is a dual non-retriggerable monostable multivibrator. Each multivibrator features edge-triggered inputs (nA and nB), either of which can be used as an enable 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 the nB inputs allow jitter-free triggering from inputs with slow transition rates, providing the circuit with excellent noise immunity. Once triggered, the outputs (nQ, nQ) are independent of further transitions of nA and nB inputs. The output pulse width is defined by the following relationship:

The output pulses can be terminated by the active LOW reset inputs (nRD). Pulse width stability is achieved through internal compensation and is virtually independent of VCC and temperature. In most applications pulse stability will only be limited by the accuracy of the external timing components . This device features reduced input threshold levels to allow interfacing to TTL logic levels. Inputs also include clamp diodes, this enables the use of current limiting resistors to interface inputs to voltages in excess of VCC.

Features and benefits

  • Supply voltage range from 4.5 V to 5.5 V
  • CMOS low power dissipation
  • High noise immunity
  • Input levels:
    • For 74HCT221: TTL level
  • Pulse width variance is typically less than ±5%
  • Direct reset terminates output pulse
  • Schmitt-trigger action on nB inputs
  • Latch-up performance exceeds 100 mA per JESD 78 Class II Level B
  • ESD protection:
    • HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V
    • CDM: ANSI/ESDA/JEDEC JS-002 class C3 exceeds 1000 V
  • Specified from -40 °C to +85 °C and from -40 °C to +125 °C
Supplier's Site Datasheet
Integrated Circuits (ICs) - Logic - Multivibrators - 74HCT221D,118 - Shenzhen Shengyu Electronics Technology Limited
Futian, China
Integrated Circuits (ICs) - Logic - Multivibrators
74HCT221D,118
Integrated Circuits (ICs) - Logic - Multivibrators 74HCT221D,118
IC MULTIVIBRATOR 31NS 16SO

IC MULTIVIBRATOR 31NS 16SO

Supplier's Site
Logic - Multivibrators - 74HCT221D,118 - Lingto Electronic Limited
Shenzhen, China
Logic - Multivibrators
74HCT221D,118
Logic - Multivibrators 74HCT221D,118
IC MULTIVIBRATOR 31NS 16SO

IC MULTIVIBRATOR 31NS 16SO

Supplier's Site Datasheet
Thief River Falls, MN, United States
Multivibrators
74HCT221D,118-ND
Multivibrators 74HCT221D,118-ND
Monostable Multivibrator 31ns 16-SO

Monostable Multivibrator 31ns 16-SO

Supplier's Site Datasheet
Multivibrators - 74HCT221D,118 - Quarktwin Technology Ltd.
Shenzhen, Guangdong, China
Multivibrators
74HCT221D,118
Multivibrators 74HCT221D,118
Monostable Multivibrator 31 ns 16-SO

Monostable Multivibrator 31 ns 16-SO

Supplier's Site Datasheet

Technical Specifications

  Nexperia B.V. Shenzhen Shengyu Electronics Technology Limited Lingto Electronic Limited DigiKey Quarktwin Technology Ltd.
Product Category Monostable Multivibrators Monostable Multivibrators Monostable Multivibrators Monostable Multivibrators Monostable Multivibrators
Product Number 74HCT221D,118 74HCT221D,118 74HCT221D,118 74HCT221D,118-ND 74HCT221D,118
Product Name Dual non-retriggerable monostable multivibrator with reset Integrated Circuits (ICs) - Logic - Multivibrators Logic - Multivibrators Multivibrators Multivibrators
Type Retriggerable Non-Retriggerable
Supply Voltage 5V; 4.5 - 5.5 4.5 V ~ 5.5 V
Features Master Reset; ESD Protection Schmitt Trigger
Package Type Other; SOT109-1 SOIC; Other; 16-SOIC (0.154", 3.90mm Width) SOIC; Other; 16-SOIC (0.154\", 3.90mm Width)
Logic Family TTL; TTL
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