74HC_HCT273_Q100

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Product data sheet

Rev. 1 — 19 June 2013

5 of 19

NXP Semiconductors

74HC273-Q100; 74HCT273-Q100

Octal D-type flip-flop with reset; positive-edge trigger

6.

Functional description

[1]

H = HIGH voltage level;

h = HIGH voltage level one set-up time prior to the LOW-to-HIGH clock transition;

L = LOW voltage level;

l = LOW voltage level one set-up time prior to the LOW-to-HIGH clock transition;

X = don’t care;

 = LOW-to-HIGH clock transition.

7.

Limiting values

[1]

The input and output voltage ratings may be exceeded if the input and output current ratings are observed.

[2]

For SO20 package: above 70

C the value of P

For TSSOP20 package: above 60

C the value of P

Table 3.

Function table[1]

Operating modes

Inputs

Outputs

MR

CP

Dn

Qn

reset (clear)

L

X

X

L

load “1”

H



hH

load “0”

H



lL

Table 4.

Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V)

Symbol

Parameter

Conditions

Min

Max

Unit

supply voltage

0.5

+7

V

input clamping current

[1] -

20

mA

output clamping current

[1] -

20

mA

output current

0.5 V < V

-

25

mA

supply current

-

50

mA

ground current

50

-

mA

storage temperature

65

+150

C

total power dissipation

[2] -

500

mW