Datasheet
SN54ACT574, SN74ACT574
OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCAS537D − OCTOBER 1995 − REVISED NOVEMBER 2002
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
recommended operating conditions (see Note 3)
SN54ACT574 SN74ACT574
UNIT
MIN MAX MIN MAX
UNIT
V
CC
Supply voltage 4.5 5.5 4.5 5.5 V
V
IH
High-level input voltage 2 2 V
V
IL
Low-level input voltage 0.8 0.8 V
V
I
Input voltage 0 V
CC
0 V
CC
V
V
O
Output voltage 0 V
CC
0 V
CC
V
I
OH
High-level output current −24 −24 mA
I
OL
Low-level output current 24 24 mA
Δt/Δv Input transition rise or fall rate 8 8 ns/V
T
A
Operating free-air temperature −55 125 −40 85 °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.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
V
T
A
= 25°C SN54ACT574 SN74ACT574
UNIT
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX MIN MAX MIN MAX
UNIT
I 50 A
4.5 V 4.4 4.49 4.4 4.4
I
OH
= −50 μA
5.5 V 5.4 5.49 5.4 5.4
V
I 24 mA
4.5 V 3.86 3.7 3.76
V
V
OH
I
OH
= −24 mA
5.5 V 4.86 4.7 4.76
V
I
OH
= −50 mA
†
5.5 V 3.85
I
OH
= −75 mA
†
5.5 V 3.85
I 50 A
4.5 V 0.1 0.1 0.1
I
OL
= 50 μA
5.5 V 0.1 0.1 0.1
V
I 24 mA
4.5 V 0.36 0.44 0.44
V
V
OL
I
OL
= 24 mA
5.5 V 0.36 0.44 0.44
V
I
OL
= 50 mA
†
5.5 V 1.65
I
OL
= 75 mA
†
5.5 V 1.65
I
OZ
V
O
= V
CC
or GND 5.5 V ±0.25 ±5 ±2.5 μA
I
I
V
I
= V
CC
or GND 5.5 V ±0.1 ±1 ±1 μA
I
CC
V
I
= V
CC
or GND, I
O
= 0 5.5 V 4 80 40 μA
ΔI
CC
‡
One input at 3.4 V,
Other inputs at GND or V
CC
5.5 V 0.6 1.5 1.5 mA
C
i
V
I
= V
CC
or GND 5 V 4.5 pF
†
Not more than one output should be tested at a time, and the duration of the test should not exceed 2 ms.
‡
This is the increase in supply current for each input that is at one of the specified TTL voltage levels, rather than 0 V or V
CC
.
PRODUCT PREVIEW information concerns products in the formative or
design phase of development. Characteristic data and other
specifications are design goals. Texas Instruments reserves the right to
change or discontinue these products without notice.