Quincy Center for
Technical Education

Power vs Speed


Family Specification Comparisons*
Compatibility Static
Input Output Current Speed
Family Technology VIL/VIH VOL/VOH ICC Tpdmax(ns)
ABT BiCMOS TTL TTL 250 ľA 3.5
AHC CMOS CMOS CMOS 40 ľA 7.5
AHCT CMOS TTL CMOS 40 ľA 7.7
AC CMOS CMOS CMOS 40 ľA 6.5
ACT CMOS TTL CMOS 40 ľA 8.0
74F Bipolar TTL TTL 120 mA 6.0
BCT BiCMOS TTL TTL 90mA 6.6
HC CMOS CMOS CMOS 80 ľA 21
HCT CMOS TTL CMOS 80 ľA 30
AS Bipolar TTL TTL 143 mA 7.5
ALS Bipolar TTL TTL 58 mA 10
LS Bipolar TTL TTL 95 mA 12
S Bipolar TTL TTL 180 mA 9
TTL Bipolar TTL TTL 22 mA 22

* Function '245 @ 25oC unless otherwise noted.