Datasheet
SCLS306C − JANUARY 1996 − REVISED AUGUST 2003
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
recommended operating conditions (see Note 3)
SN54HCT541 SN74HCT541
UNIT
MIN NOM MAX MIN NOM MAX
UNIT
V
CC
Supply voltage 4.5 5 5.5 4.5 5 5.5 V
V
IH
High-level input voltage V
CC
= 4.5 V to 5.5 V 2 2 V
V
IL
Low-level input voltage V
CC
= 4.5 V to 5.5 V 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
∆t/∆v Input transition rise/fall time 500 500 ns
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
CC
T
A
= 25°C SN54HCT541 SN74HCT541
UNIT
PARAMETER
TEST CONDITIONS
V
CC
MIN TYP MAX MIN MAX MIN MAX
UNIT
V
OH
V
I
= V
IH
or V
IL
I
OH
= −20 µA
4.5 V
4.4 4.499 4.4 4.4
V
V
OH
V
I
= V
IH
or V
IL
I
OH
= −6 mA
4.5 V
3.98 4.3 3.7 3.84
V
V
OL
V
I
= V
IH
or V
IL
I
OL
= 20 µA
4.5 V
0.001 0.1 0.1 0.1
V
V
OL
V
I
= V
IH
or V
IL
I
OL
= 6 mA
4.5 V
0.17 0.26 0.4 0.33
V
I
I
V
I
= V
CC
or 0 5.5 V ±0.1 ±100 ±1000 ±1000 nA
I
OZ
V
O
= V
CC
or 0, V
I
= V
IH
or V
IL
5.5 V ±0.01 ±0.5 ±10 ±5 µA
I
CC
V
I
= V
CC
or 0, I
O
= 0 5.5 V 8 160 80 µA
∆I
CC
†
One input at 0.5 V or 2.4 V,
Other inputs at 0 or V
CC
5.5 V 1.4 2.4 3 2.9 mA
C
i
4.5 V
to 5.5 V
3 10 10 10 pF
†
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
.
switching characteristics over recommended operating free-air temperature range, C
L
= 50 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM
TO
V
CC
T
A
= 25°C SN54HCT541 SN74HCT541
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
V
CC
MIN TYP MAX MIN MAX MIN MAX
UNIT
t
pd
A
Y
4.5 V 13 23 34 29
ns
t
pd
A Y
5.5 V 12 21 31 26
ns
t
en
OE
Y
4.5 V 21 30 45 38
ns
t
en
OE
Y
5.5 V 19 27 41 34
ns
t
dis
OE
Y
4.5 V 19 30 45 38
ns
t
dis
OE
Y
5.5 V 18 27 41 34
ns
t
t
Y
4.5 V 8 12 18 15
ns
t
t
Y
5.5 V 7 11 16 14
ns