SN74121NSRE4

Overview

The SN74121NSRE4 is a monostable multivibrator integrated circuit manufactured by Texas Instruments. It operates within a supply voltage range of 4.75V to 5.25V and supports an output current of 16 mA. The device features two channels, utilizes a 14-pin Small Outline package (SOIC), and functions across a temperature range of 0°C to 70°C.

Feature Summary

• Provides precise timing control through external resistor and capacitor connections
• Features non-retriggerable operation for stable pulse generation
• Includes dedicated trigger inputs with Schmitt-trigger action for noise immunity

Applications

• Timing delay circuits
• Pulse width modulation systems
• Frequency division networks

Procurement Notes

Verify the 'N' suffix indicates the SOIC-14 package configuration and the 'E4' suffix confirms lead-free composition and RoHS compliance. Confirm the datasheet version matches the required specifications before procurement.

Selection Notes

Select this component when a reliable one-shot pulse generator is needed in standard 5V logic environments. Ensure the external RC network values align with the desired pulse duration requirements.

Part Context

This part belongs to the Texas Instruments 74-series logic family, specifically designed as a monostable multivibrator. It serves as a digital timing element compatible with standard TTL logic levels.

Replacement Considerations

Compatible substitutes include the SN74LS121 and SN74HC121 variants, provided voltage levels and package compatibility are verified.