MC74AC74 MC74ACT74

5-2

FACT DATA

SD

D

CP

CD

Q

Q

LOGIC DIAGRAM

Please note that this diagram is provided only for the understanding of logic

operations and should not be used to estimate propagation delays.

MAXIMUM RATINGS*

Symbol

Parameter

Value

Unit

VCC

DC Supply Voltage (Referenced to GND)

–0.5 to +7.0

V

Vin

DC Input Voltage (Referenced to GND)

–0.5 to VCC +0.5

V

Vout

DC Output Voltage (Referenced to GND)

–0.5 to VCC +0.5

V

Iin

DC Input Current, per Pin

±20

mA

Iout

DC Output Sink/Source Current, per Pin

±50

mA

ICC

DC VCC or GND Current per Output Pin

±50

mA

Tstg

Storage Temperature

–65 to +150

°C

* Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended

Operating Conditions.

RECOMMENDED OPERATING CONDITIONS

Symbol

Parameter

Min

Typ

Max

Unit

VCC

Supply Voltage

′AC

2.0

5.0

6.0

V

VCC

Supply Voltage

′ACT

4.5

5.0

5.5

V

Vin, Vout

DC Input Voltage, Output Voltage (Ref. to GND)

0

VCC

V

tr, tf

Input Rise and Fall Time (Note 1)

′AC Devices except Schmitt Inputs

VCC @ 3.0 V

150

tr, tf

Input Rise and Fall Time (Note 1)

′AC Devices except Schmitt Inputs

VCC @ 4.5 V

40

ns/V

r, tf

′AC Devices except Schmitt Inputs

VCC @ 5.5 V

25

tr, tf

Input Rise and Fall Time (Note 2)

′ACT Devices except Schmitt Inputs

VCC @ 4.5 V

10

ns/V

tr, tf

Input Rise and Fall Time (Note 2)

′ACT Devices except Schmitt Inputs

VCC @ 5.5 V

8.0

ns/V

TJ

Junction Temperature (PDIP)

140

°C

TA

Operating Ambient Temperature Range

–40

25

85

°C

IOH

Output Current — High

–24

mA

IOL

Output Current — Low

24

mA

1. Vin from 30% to 70% VCC; see individual Data Sheets for devices that differ from the typical input rise and fall times.

2. Vin from 0.8 V to 2.0 V; see individual Data Sheets for devices that differ from the typical input rise and fall times.