GENUINE Signetics parts in 14PDIP package
See the photographs, the ‘S’ logo is clearly visible and the chips photographed are of the same batch as the ones you will receive.
SCHMITT TRIGGERS DUAL 4-INPUT NAND/HEX INVERTERS
These 74F13N chips contain logic gates/inverters which accept standard TTL input signals and provide standard TTL output levels. They are capable of transforming slowly changing input signals into sharply defined, jitter-free output signals. Additionally, they have greater noise margin than conventional inverters. Each circuit contains a Schmitt trigger followed by a Darlington level shifter and a phase splitter driving a TTL totem pole output. The Schmitt trigger uses positive feedback to effectively speed up slow input transitions and provide different input threshold voltages for positive and negative-going transitions. This hysteresis between the positive-going and negative-going input thresholds (typically 800 mV) is determined internally by resistor ratios and is essentially insensitive to temperature and supply voltage variations.
These came to us as part of a lot of surplus stock from a large ‘Milspec’ type Co. They are stored with us still sealed in original packaging (unopened boxes and tubes) and are in pristine condition. However having been in storage for some years we have classified them as ‘new other’.
Manufactured in the 90’s DATE CODE 9105
As many of our lines come in to us as surplus stock – sometimes from high end ‘Milspec’ type manufacturers we try to pass on our savings to our customers – often selling industrial grade or military spec components at a fraction of their original cost.
For datasheet search …74F13N
SURPLUS STOCK ?????
If you have similar items to this, or indeed any electronic components that are surplus to requirements please contact us with details, we are always keen to source new stock.