74HC7541; 74HCT7541
Octal Schmitt trigger buffer/line driver; 3-state
Rev. 6 — 16 December 2013
Product data sheet
1. General description
The 74HC7541; 74HCT7541 is an 8-bit buffer/line driver with Schmitt-trigger inputs and
3-state outputs. The device features two output enables (OE1 and OE2). A HIGH on OEn
causes the outputs to assume a high-impedance OFF-state. Inputs include clamp diodes.
This enables the use of current limiting resistors to interface inputs to voltages in excess
of V
CC
. Schmitt trigger inputs transform slowly changing input signals into sharply defined
jitter-free output signals.
2. Features and benefits
Non-inverting outputs
Low-power dissipation
Input levels:
For 74HC7541: CMOS level
For 74HCT7541: TTL level
Complies with JEDEC standard no. 7A
ESD protection:
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V
Multiple package options
Specified from
40 C
to +85
C
and from
40 C
to +125
C
3. Ordering information
Table 1.
Ordering information
Package
Temperature range
74HC7541N
74HCT7541N
74HC7541D
74HCT7541D
74HC7541DB
74HC7541PW
74HCT7541PW
40 C
to +125
C
40 C
to +125
C
SSOP20
TSSOP20
40 C
to +125
C
SO20
plastic small outline package; 20 leads;
body width 7.5 mm
plastic shrink small outline package; 20 leads;
body width 5.3 mm
plastic thin shrink small outline package; 20 leads;
body width 4.4 mm
SOT163-1
SOT339-1
SOT360-1
40 C
to +125
C
Name
DIP20
Description
plastic dual in-line package; 20 leads (300 mil)
Version
SOT146-1
Type number
NXP Semiconductors
74HC7541; 74HCT7541
Octal Schmitt trigger buffer/line driver; 3-state
4. Functional diagram
A0
Y0
2
18
3
A1
Y1
17
4
A2
Y2
16
5
A3
Y3
15
1
19
&
EN
6
A4
Y4
14
2
18
17
16
15
14
13
12
11
7
A5
Y5
13
3
4
8
A6
Y6
12
5
6
9
A7
Y7
7
11
8
9
1
19
OE1
OE2
aaa-000084
aaa-000085
Fig 1.
Logic symbol
Fig 2.
IEC logic symbol
5. Pinning information
5.1 Pinning
74HC7541
74HCT7541
OE1
A0
A1
A2
A3
A4
A5
A6
A7
1
2
3
4
5
6
7
8
9
20 V
CC
19 OE2
18 Y0
17 Y1
16 Y2
15 Y3
14 Y4
13 Y5
12 Y6
11 Y7
aaa-000086
74HC7541
74HCT7541
OE1
AO
A1
A2
A3
A4
A5
A6
A7
1
2
3
4
5
6
7
8
9
20 V
CC
19 OE2
18 Y0
17 Y1
16 Y2
15 Y3
14 Y4
13 Y5
12 Y6
11 Y7
aaa-000087
GND 10
GND 10
Fig 3.
Pin configuration DIP20, SO20
Fig 4.
Pin configuration SSOP20, TSSOP20
74HC_HCT7541
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 6 — 16 December 2013
2 of 17
NXP Semiconductors
74HC7541; 74HCT7541
Octal Schmitt trigger buffer/line driver; 3-state
5.2 Pin description
Table 2.
Symbol
OE1
A0 to A7
GND
Y0 to Y7
OE2
V
CC
Pin description
Pin
1
2, 3, 4, 5, 6, 7, 8, 9
10
19
20
Description
output enable input (active LOW)
data input
ground (0 V)
output enable input (active LOW)
supply voltage
18, 17, 16, 15, 14, 13, 12, 11 data output
6. Functional description
Table 3.
Control
OE1
L
L
X
H
[1]
Functional table
[1]
Input
OE2
L
L
H
X
An
L
H
X
X
Output
Yn
L
H
Z
Z
H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.
7. Limiting values
Table 4.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol
V
CC
I
IK
I
OK
I
O
I
CC
I
GND
T
stg
P
tot
Parameter
supply voltage
input clamping current
output clamping current
output current
supply current
ground current
storage temperature
total power dissipation
DIP20
SO20, SSOP20, TSSOP20
[1]
[2]
[2]
Conditions
V
I
<
0.5
V or V
I
> V
CC
+ 0.5 V
V
O
<
0.5
V or V
O
> V
CC
+ 0.5 V
0.5
V < V
O
< V
CC
+ 0.5 V
[1]
[1]
Min
0.5
-
-
-
-
70
65
-
-
Max
+7
20
20
35
70
-
+150
750
500
Unit
V
mA
mA
mA
mA
mA
C
mW
mW
The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
For DIP20 packages: above 70
C
the value of P
tot
derates linearly with 12 mW/K.
For SO20 packages: above 70
C
the value of P
tot
derates linearly with 8 mW/K.
For SSOP20 and TSSOP20 packages: above 60
C
the value of P
tot
derates linearly with 5.5 mW/K.
74HC_HCT7541
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 6 — 16 December 2013
3 of 17
NXP Semiconductors
74HC7541; 74HCT7541
Octal Schmitt trigger buffer/line driver; 3-state
8. Recommended operating conditions
Table 5.
Recommended operating conditions
Voltages are referenced to GND (ground = 0 V)
Symbol Parameter
V
CC
V
I
V
O
T
amb
supply voltage
input voltage
output voltage
ambient temperature
Conditions
74HC7541
Min
2.0
0
0
40
Typ
5.0
-
-
+25
Max
6.0
V
CC
V
CC
+125
74HCT7541
Min
4.5
0
0
40
Typ
5.0
-
-
+25
Max
5.5
V
CC
V
CC
+125
V
V
V
C
Unit
9. Static characteristics
Table 6.
Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter
Conditions
T
amb
= 25
C
Min
74HC7541
V
OH
HIGH-level
output voltage
V
I
= V
T+
or V
T
I
O
=
20 A;
V
CC
= 2.0 V
I
O
=
20 A;
V
CC
= 4.5 V
I
O
=
20 A;
V
CC
= 6.0 V
I
O
=
6.0
mA; V
CC
= 4.5 V
I
O
=
7.8
mA; V
CC
= 6.0 V
V
OL
LOW-level
output voltage
V
I
= V
T+
or V
T
I
O
= 20
A;
V
CC
= 2.0 V
I
O
= 20
A;
V
CC
= 4.5 V
I
O
= 20
A;
V
CC
= 6.0 V
I
O
= 6.0 mA; V
CC
= 4.5 V
I
O
= 7.8 mA; V
CC
= 6.0 V
I
I
I
OZ
input leakage
current
OFF-state
output current
V
I
= V
CC
or GND; V
CC
= 6.0 V
per input pin; V
I
= V
T+
or V
T
;
V
O
= V
CC
or GND;
other inputs at V
CC
or GND;
V
CC
= 6.0 V; I
O
= 0 A
V
I
= V
CC
or GND; I
O
= 0 A;
V
CC
= 6.0 V
-
-
-
-
-
-
-
0
0
0
0.15
0.16
-
-
0.1
0.1
0.1
0.26
0.26
0.1
0.5
-
-
-
-
-
-
-
0.1
0.1
0.1
0.33
0.33
1.0
5.0
-
-
-
-
-
-
-
0.1
0.1
0.1
0.4
0.4
1.0
10
V
V
V
V
V
A
A
1.9
4.4
5.9
3.98
5.48
2.0
4.5
6.0
4.32
5.81
-
-
-
-
-
1.9
4.4
5.9
3.84
5.34
-
-
-
-
-
1.9
4.4
5.9
3.7
5.2
-
-
-
-
-
V
V
V
V
V
Typ
Max
T
amb
=
40 C
to +85
C
Min
Max
T
amb
=
40 C
to +125
C
Min
Max
Unit
I
CC
C
I
supply current
input
capacitance
HIGH-level
output voltage
-
-
-
3.5
8.0
-
-
-
80
-
-
-
160
-
A
pF
74HCT7541
V
OH
V
I
= V
T+
or V
T
; V
CC
= 4.5 V
I
O
=
20 A
I
O
=
6.0
mA
74HC_HCT7541
4.4
3.98
4.5
4.32
-
-
4.4
3.84
-
-
4.4
3.7
-
-
V
V
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 6 — 16 December 2013
4 of 17
NXP Semiconductors
74HC7541; 74HCT7541
Octal Schmitt trigger buffer/line driver; 3-state
Table 6.
Static characteristics
…continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter
Conditions
T
amb
= 25
C
Min
V
OL
LOW-level
output voltage
V
I
= V
T+
or V
T
; V
CC
= 4.5 V
I
O
= 20
A;
I
O
= 6.0 mA;
I
I
I
OZ
input leakage
current
OFF-state
output current
V
I
= V
CC
or GND; V
CC
= 5.5 V
per input pin; V
I
= V
T+
or V
T
;
V
O
= V
CC
or GND;
other inputs at V
CC
or GND;
V
CC
= 5.5 V; I
O
= 0 A
V
I
= V
CC
or GND; I
O
= 0 A;
V
CC
= 5.5 V
per input pin; I
O
= 0 A;
V
I
= V
CC
2.1 V;
other inputs at V
CC
or GND;
V
CC
= 4.5 V to 5.5 V
An input
OEn input
C
I
input
capacitance
-
-
-
20
130
3.5
72
468
-
-
-
-
90
585
-
-
-
-
98
637
-
A
A
pF
-
-
-
-
0
0.15
-
-
0.1
0.26
0.1
0.5
-
-
-
-
0.1
0.33
1.0
5.0
-
-
-
-
0.1
0.4
1.0
10
V
V
A
A
Typ
Max
T
amb
=
40 C
to +85
C
Min
Max
T
amb
=
40 C
to +125
C
Min
Max
Unit
I
CC
I
CC
supply current
additional
supply current
-
-
8.0
-
80
-
160
A
10. Dynamic characteristics
Table 7.
Dynamic characteristics
GND = 0 V; C
L
= 50 pF; for test circuit see
Figure 7.
Symbol Parameter
74HC7541
t
pd
propagation delay An to Yn; see
Figure 5
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 5.0 V; C
L
= 15 pF
V
CC
= 6.0 V
t
en
enable time
OEn to Yn; see
Figure 6
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
t
dis
disable time
OEn to Yn; see
Figure 6
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
[1]
[1]
[1]
Conditions
T
amb
= 25
C
Min
Typ
Max
T
amb
=
40 C
to +125
C
Max (85
C)
Max (125
C)
Unit
-
-
-
-
-
-
-
-
-
-
39
14
10
11
44
16
13
58
21
17
120
24
-
20
160
32
27
160
32
27
150
30
-
26
200
40
34
200
40
34
180
36
-
32
240
48
41
240
48
41
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
74HC_HCT7541
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 6 — 16 December 2013
5 of 17
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