U74AHC21

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

3 of 4

www.unisonic.com.tw

QW-R126-012.A



PARAMETER

SYMBOL

RATINGS

UNIT

Supply Voltage

-0.5~7

V

-20

mA

±20

mA

Output Current

±25

mA

±50

mA

Storage Temperature

-65 ~ +150

°C

Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.

Absolute maximum ratings are stress ratings only and functional device operation is not implied.



RECOMMENDED OPERATING CONDITIONS

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNIT

Supply Voltage

2

5.5

V

Input Voltage

0

Vcc

V

Output Voltage

0

V

Input Transition Rise or Fall Rate △t/△V

100

ns

20

ns

Operating Temperature

-40

85

°C



PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

High-Level Input Voltage

1.5

V

2.1

V

3.85

V

Low-Level Input Voltage

0.5

V

0.9

V

1.65

V

High-Level Output Voltage

1.9

V

2.9

V

4.4

V

2.58

V

3.94

V

Low-Level Output Voltage

0.1

V

0.1

V

0.1

V

0.36

V

0.36

V

Input Leakage Current

±0.1

uA

Quiescent Supply Current

2

µA

Input Capacitance

4

pF



PARAMETER

SYMBOL

TEST CONDITION

MIN

TYP

MAX

UNIT

Propagation delay from input

(A ,B,C,D) to output(Y)

6.2

8.8

ns

8.7

12.3

ns

4.5

5.9

ns

5.8

7.9

ns



PARAMETER

SYMBOL

TEST CONDITION

MIN

TYP

MAX

UNIT

Power Dissipation Capacitance

Cpd

No load

18

pF