HD74AC datasheet(20/52 Pages) HITACHI

20 / 52 page

Definition of Specifications

2. Ratings and Specifications

Table 1 Absolute Maximum Ratings

Parameter

Symbol

Limit

Unit

Condition

Supply voltage

–0.5 to 7.0

DC input Diode current

or DC input voltage

–20

I = –0.5

I = VCC +0.5

–0.5 to V

CC +0.5

DC output Diode

current or DC output

voltage

–50

O = –0.5

O = VCC +0.5

–0.5 to V

CC +0.5

DC output source or

sink current

±50

DC V

CC or ground

current per output pin

CC or IGND

±50

Storage temperature

STG

–65 to 150

°C

Note:

1. Absolute maximum ratings are those values beyond which damage to the device may occur.

Obviously the databook specifications should be met, without exception to ensure that the

system design is reliable over its power supply, temperature, output/input loading variables.

Hitachi does not recommend operation of FACT circuits outside databook specifications.

Table 2 Recommended Operating Conditions

Parameter

Symbol

Limit

Unit

Condition

Supply Voltage (unless

otherwise specified)

AC devices

2.0 to 6.0

ACT devices

4.5 to 5.5

Input voltage

0 to V

Output voltage

0 to V

Operating temperature

–40 to +85

°C

Input rise and Fall time*

1 (typical)

tr, tf

150

ns/V

CC @ 3.0V

(except Schmitt inputs) ’AC devices V

IN from

ns/V

CC @ 4.5V

30% to 70% of V

ns/V

CC @ 5.5V

Input rise and Fall time*

1 (typical)

tr, tf

ns/V

CC @ 4.5V

(except schmitt inputs) ’ACT devices V

IN from

ns/V

CC @ 5.5V

0.8 to 2.0 V, V

meas from 0.8 to 2.0V

Note:

1. See individual data sheets for those devices which differ from the typical input rise and fall times

noted here.

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