Datasheet

SN74HC74-Q1
DUAL D-TYPE POSITIVE-EDGE-TRIGGERED FLIP-FLOP
WITH CLEAR AND PRESET
SCLS577A − MARCH 2004 − REVISED APRIL 2008
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
logic diagram (positive logic)
PRE
CLK
D
CLR
Q
Q
C
C
C
C
C
C
C
C
C
C
TG
TG
TG
TG
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
‡
Supply voltage range, V
CC
−0.5 V to 7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input clamp current, I
IK
(V
I
< 0 or V
I
> V
CC
) (see Note 1) ±20 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output clamp current, I
OK
(V
O
< 0 or V
O
> V
CC
) (see Note 1) ±20 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous output current, I
O
(V
O
= 0 to V
CC
) ±25 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous current through V
CC
or GND ±50 mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance, θ
JA
(see Note 2): D package 86°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PW package 113°C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, T
stg
−65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
‡
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. The package thermal impedance is calculated in accordance with JESD 51-7.
recommended operating conditions (see Note 3)
MIN NOM MAX UNIT
V
CC
Supply voltage 2 5 6 V
V
CC
= 2 V 1.5
V
IH
High-level input voltage
V
CC
= 4.5 V 3.15
V
V
IH
High level
input
voltage
V
CC
= 6 V 4.2
V
V
CC
= 2 V 0.5
V
IL
Low-level input voltage
V
CC
= 4.5 V 1.35
V
V
IL
Low level
input
voltage
V
CC
= 6 V 1.8
V
V
I
Input voltage 0 V
CC
V
V
O
Output voltage 0 V
CC
V
V
CC
= 2 V 1000
∆t/∆v Input transition rise/fall time
V
CC
= 4.5 V 500
ns
∆t/∆v
Input
transition
rise/fall
time
V
CC
= 6 V 400
ns
T
A
Operating free-air temperature −40 125 °C
NOTE 3: All unused inputs of the device must be held at V
CC
or GND to ensure proper device operation. Refer to the TI application report,
Implications of Slow or Floating CMOS Inputs, literature number SCBA004.