U74HCT138

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

5 of 5

www.unisonic.com.tw

QW-R502-642.B



TEST CIRCUIT AND WAVEFORMS

Test Circuit

Output

Input

1.3V

1.3V

1.3V

1.3V

90%

10%

10%

90%

1.3V

1.3V

10%

90%

90%

10%

3V

Output

GND

Propagation Delay and Output Tansition Times

UTC assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or

other parameters) listed in products specifications of any and all UTC products described or contained

herein. UTC products are not designed for use in life support appliances, devices or systems where

malfunction of these products can be reasonably expected to result in personal injury. Reproduction in

whole or in part is prohibited without the prior written consent of the copyright owner. The information

presented in this document does not form part of any quotation or contract, is believed to be accurate

and reliable and may be changed without notice.