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74HC7541; 74HCT7541
Octal Schmitt trigger buffer/line driver; 3-state
Rev. 7 — 4 March 2016
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 VCC. 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
Type number Package
Temperature range
74HC7541D 40 C to +125 C
74HCT7541D
74HC7541DB 40 C to +125 C
Name
SO20
SSOP20
74HC7541PW 40 C to +125 C
74HCT7541PW
TSSOP20
Description
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
Version
SOT163-1
SOT339-1
SOT360-1

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4. Functional diagram
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Fig 1. Logic symbol
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DDD
5. Pinning information
5.1 Pinning
+&
+&7
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Fig 3. Pin configuration SO20
74HC7541; 74HCT7541
Octal Schmitt trigger buffer/line driver; 3-state
1
& EN
19
2 18
3 17
4 16
5 15
6 14
7 13
8 12
9 11
Fig 2. IEC logic symbol
aaa-000085
74HC7541
74HCT7541
OE1 1
AO 2
A1 3
A2 4
A3 5
A4 6
A5 7
A6 8
A7 9
GND 10
20 VCC
19 OE2
18 Y0
17 Y1
16 Y2
15 Y3
14 Y4
13 Y5
12 Y6
11 Y7
aaa-000087
Fig 4. Pin configuration SSOP20, TSSOP20
74HC_HCT7541
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 4 March 2016
© Nexperia B.V. 2017. All rights reserved
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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
VCC
Pin description
Pin
1
2, 3, 4, 5, 6, 7, 8, 9
10
18, 17, 16, 15, 14, 13, 12, 11
19
20
6. Functional description
Description
output enable input (active LOW)
data input
ground (0 V)
data output
output enable input (active LOW)
supply voltage
Table 3.
Control
OE1
L
L
X
H
Functional table[1]
OE2
L
L
H
X
Input
An
L
H
X
X
[1] H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.
7. Limiting values
Output
Yn
L
H
Z
Z
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
VCC
IIK
IOK
IO
ICC
IGND
Tstg
Ptot
supply voltage
input clamping current
output clamping current
output current
supply current
ground current
storage temperature
total power dissipation
VI < 0.5 V or VI > VCC + 0.5 V
VO < 0.5 V or VO > VCC + 0.5 V
0.5 V < VO < VCC + 0.5 V
SO20, SSOP20, TSSOP20
0.5
[1] -
[1] -
-
-
70
65
[2] -
+7
20
20
35
70
-
+150
500
V
mA
mA
mA
mA
mA
C
mW
[1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] For SO20 packages: above 70 C the value of Ptot derates linearly with 8 mW/K.
For SSOP20 and TSSOP20 packages: above 60 C the value of Ptot derates linearly with 5.5 mW/K.
74HC_HCT7541
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 4 March 2016
© Nexperia B.V. 2017. All rights reserved
3 of 16

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Nexperia
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
Conditions
VCC
VI
VO
Tamb
supply voltage
input voltage
output voltage
ambient temperature
9. Static characteristics
74HC7541
Min Typ Max
2.0 5.0 6.0
0 - VCC
0 - VCC
40 +25 +125
74HCT7541
Min Typ Max
4.5 5.0 5.5
0 - VCC
0 - VCC
40 +25 +125
Unit
V
V
V
C
Table 6. Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions
Tamb = 25 C
Tamb = 40 C
to +85 C
Min Typ Max Min Max
74HC7541
VOH HIGH-level VI = VT+ or VT
output voltage IO = 20 A; VCC = 2.0 V
1.9 2.0
-
1.9
-
IO = 20 A; VCC = 4.5 V 4.4 4.5 -
4.4
-
IO = 20 A; VCC = 6.0 V 5.9 6.0 -
5.9
-
IO = 6.0 mA; VCC = 4.5 V 3.98 4.32 -
3.84
-
IO = 7.8 mA; VCC = 6.0 V 5.48 5.81 -
5.34
-
VOL LOW-level VI = VT+ or VT
output voltage IO = 20 A; VCC = 2.0 V
- 0 0.1 -
0.1
IO = 20 A; VCC = 4.5 V
- 0 0.1 -
0.1
IO = 20 A; VCC = 6.0 V
- 0 0.1 -
0.1
IO = 6.0 mA; VCC = 4.5 V
- 0.15 0.26 -
0.33
IO = 7.8 mA; VCC = 6.0 V
- 0.16 0.26 -
0.33
II
input leakage VI = VCC or GND; VCC = 6.0 V -
- 0.1 -
1.0
current
IOZ
OFF-state
VI = VT+ or VT; VCC = 6.0 V;
-
- 0.5 -
5.0
output current VO = VCC or GND
ICC supply current VI = VCC or GND; IO = 0 A; - - 8.0 -
VCC = 6.0 V
80
CI input
capacitance
- 3.5 -
-
-
74HCT7541
VOH
HIGH-level
VI = VT+ or VT; VCC = 4.5 V
output voltage IO = 20 A
4.4 4.5 -
4.4
IO = 6.0 mA
3.98 4.32 - 3.84
-
-
Tamb = 40 C
to +125 C
Min Max
Unit
1.9 - V
4.4 - V
5.9 - V
3.7 - V
5.2 - V
- 0.1 V
- 0.1 V
- 0.1 V
- 0.4 V
- 0.4 V
- 1.0 A
- 10 A
- 160 A
- - pF
4.4 - V
3.7 - V
74HC_HCT7541
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 4 March 2016
© Nexperia B.V. 2017. All rights reserved
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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
Tamb = 25 C
Tamb = 40 C
to +85 C
Min Typ Max Min Max
VOL LOW-level VI = VT+ or VT; VCC = 4.5 V
output voltage IO = 20 A;
- 0 0.1 -
IO = 6.0 mA;
- 0.15 0.26 -
II
input leakage VI = VCC or GND; VCC = 5.5 V -
- 0.1 -
current
0.1
0.33
1.0
IOZ
OFF-state
VI = VT+ or VT; VCC = 5.5 V;
-
- 0.5 -
output current VO = VCC or GND
ICC supply current VI = VCC or GND; IO = 0 A; - - 8.0 -
VCC = 5.5 V
ICC
additional
supply current
per input pin; IO = 0 A;
VI = VCC 2.1 V;
other inputs at VCC or GND;
VCC = 4.5 V to 5.5 V
An input
- 20 72
-
5.0
80
90
OEn input
- 130 468 -
585
CI input
capacitance
- 3.5 -
-
-
Tamb = 40 C
to +125 C
Min Max
Unit
- 0.1 V
- 0.4 V
- 1.0 A
- 10 A
- 160 A
- 98 A
- 637 A
- - pF
10. Dynamic characteristics
Table 7. Dynamic characteristics
GND = 0 V; CL = 50 pF; for test circuit see Figure 7.
Symbol Parameter
Conditions
74HC7541
tpd propagation delay An to Yn; see Figure 5
VCC = 2.0 V
VCC = 4.5 V
VCC = 5.0 V; CL = 15 pF
VCC = 6.0 V
ten enable time
OEn to Yn; see Figure 6
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
tdis disable time
OEn to Yn; see Figure 6
VCC = 2.0 V
VCC = 4.5 V
VCC = 6.0 V
Tamb = 25 C
Tamb = 40 C to +125 C Unit
Min Typ Max Max (85 C) Max (125 C)
[1]
-
-
-
-
[1]
-
-
-
[1]
-
-
-
39 120
14 24
10 -
11 20
44 160
16 32
13 27
58 160
21 32
17 27
150
30
-
26
200
40
34
200
40
34
180 ns
36 ns
- ns
32 ns
240 ns
48 ns
41 ns
240 ns
48 ns
41 ns
74HC_HCT7541
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 4 March 2016
© Nexperia B.V. 2017. All rights reserved
5 of 16