Texas SN74121N Monostable Multivibrator 16mA 14-Pin PDIP MBD001G


40 in stock

SKU: MBD001G Category:






For sale here we have the above…

1 Piece

Product Overview

The SN74121N is a monostable Multi-vibrator with Schmitt-trigger inputs features dual negative-transition-triggered inputs and a single positive-transition-triggered input which can be used as an inhibit input. Complementary output pulses are provided. 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 (TTL hysteresis) for the B-input allow jitter-free triggering from inputs with transition rates as slow as 1 volt/second, providing the circuit with an excellent noise immunity of typically 1.2V. A high immunity to VCC noise of typically 1.5V is also provided by internal latching circuitry. Input pulses may be of any duration relative to the output pulse. Output rise and fall times are TTL compatible and independent of pulse length. Pulse width stability is achieved through internal compensation and is virtually independent of VCC and temperature.
  • 35 to 40ns Programmable output pulse
  • Internal compensation for virtual temperature independence
  • Jitter-free operation up to 90% duty cycle
  • Inhibit capability
Attribute Value
Logic Family 74
Logic Function Monostable Multivibrator
Number of Elements per Chip 1
Maximum High Level Output Current -0.4mA
Maximum Low Level Output Current 16mA
Minimum Pulse Width 50 ns
Maximum Propagation Delay Time @ Maximum CL 80 ns @ 5 V
Maximum Quiescent Current 13mA
Mounting Type Through Hole
Package Type PDIP
Pin Count 14
Dimensions 19.3 x 6.35 x 4.57mm
Height 4.57mm
Length 19.3mm
Width 6.35mm
Minimum Operating Supply Voltage 4.75 V
Minimum Operating Temperature 0 °C
Maximum Operating Temperature +70 °C
Maximum Operating Supply Voltage 5.25 V
For datasheet search…Texas 74121N
Or go directly to…


These genuine vintage parts came to us as part of a lot of surplus stock from a large Milspec type Co. they have been kept in storage for some time, date coded 7927 or earlier, we have therefore classified them as ‘new other’. They are however pristine, stored with us still in their original packaging and ‘as new’ in all respects, the photographs are representative of their excellent condition, and, as with all our products they come with a full guarantee. 

If you have similar items to this, or indeed any electronic components that are surplus to requirements please contact us with details.

Stored with us still in their original tubes, you will receive the qty ordered in a cut length of tube.


Additional information