Datasheet4U Logo Datasheet4U.com

SN74LS221 - DUAL MONOSTABLE MULTIVIBRATORS

Download the SN74LS221 datasheet PDF. This datasheet also covers the SN74LS221D variant, as both devices belong to the same dual monostable multivibrators family and are provided as variant models within a single manufacturer datasheet.

Key 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 voltage level and is not related to the transition time of the input pulse. Schmitt-trigger input circuitry for B input allows jitter-free triggering for inputs as slow as 1 volt/ second, providing the circuit with excellent noise immunity. A high immunity to VCC noise is also provided by internal latching circuitry. Once triggered, the out.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (SN74LS221D_MotorolaInc.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
SN74LS221 Dual Monostable Multivibrators ON Semiconductor
SN74LS221 DUAL MONOSTABLE MULTIVIBRATORS Texas Instruments
SN74LS20 Dual 4-Input Positive-NAND Gate Texas Instruments
SN74LS21 DUAL 4-INPUT POSITIVE-AND GATE Texas Instruments
SN74LS2323 DUAL LINE RECEIVER Texas Instruments

Other Datasheets by Motorola Semiconductor (now NXP Semiconductors)

Part Number Description
SN74LS22 DUAL 4-INPUT NAND GATE
SN74LS20 DUAL 4-INPUT NAND GATE
SN74LS20N DUAL 4-INPUT NAND GATE
SN74LS21 DUAL 4-INPUT AND GATE
SN74LS240 OCTAL BUFFER/LINE DRIVER

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
DUAL MONOSTABLE MULTIVIBRATORS WITH SCHMITT-TRIGGER INPUTS Each multivibrator of the LS221 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 voltage level and is not related to the transition time of the input pulse. Schmitt-trigger input circuitry for B input allows jitter-free triggering for inputs as slow as 1 volt/ second, providing the circuit with excellent noise immunity. A high immunity to VCC noise is also provided by internal latching circuitry. Once triggered, the outputs are independent of further transitions of the inputs and are a function of the timing components. The output pulses can be terminated by the overriding clear.