STMICROELECTRONICS M74HC541

M54HC540/541
M74HC540/541
OCTAL BUS BUFFER WITH 3 STATE OUTPUTS
HC540: INVERTED - HC541 NON INVERTED
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HIGH SPEED
tPD = 10 ns (TYP.) at VCC = 5V
LOW POWER DISSIPATION
o
ICC = 4 µA (MAX.) at TA = 25 C
HIGH NOISE IMMUNITY
VNIH = VINL = 28 % VCC (MIN.)
OUTPUT DRIVE CAPABILITY
15 LSTTL LOADS
SYMMETRICAL OUTPUT IMPEDANCE
|IOH| = IOL = 6 mA (MIN)
BALANCED PROPAGATION DELAYS
tPLH = tPHL
WIDE OPERATING VOLTAGE RANGE
VCC (OPR) = 2V to 6V
PIN AND FUNCTION COMPATIBLE
WITH 54/74LS540/541
B1R
(Plastic Package)
F1R
(Ceramic Package)
M1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M54HCXXXF1R
M74HCXXXM1R
M74HCXXXB1R
M74HCXXXC1R
DESCRIPTION
The M54/74HC540 and HC541 are high speed
CMOS OCTAL BUS BUFFERS (3-STATE)
fabricated in silicon gate C2MOS technology. They
have the same high speed performance of LSTTL
combined with true CMOS low power consumption.
The HC540 is an inverting buffer and HC541 is a non
inverting buffer.
The 3 STATE control gate operates as a two input
AND such that if either G1 and G2 are high, all eight
output are in the high impedance state. In order to
enhance PC board layout, the HC540 and HC541
offers a pinout having inputs and outputs on
opposite sides of the package.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
PIN CONNECTION (top view)
HC540
October 1993
HC541
1/12
M54/M74HC540/541
CHIP CARRIER
HC540
HC541
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION (HC540)
PIN No
SYMBOL
1, 19
1G, G2
2, 3, 4, 5,
6, 7, 8, 9
18, 17, 16,
15, 14, 13,
12, 11
10
A1 to A8
Data Inputs
Y1 to Y8
Bus Outputs
GND
Ground (0V)
20
V CC
Positive Supply Voltage
2/12
NAME AND FUNCTION
Output Enable Inputs
PIN DESCRIPTION (HC541)
PIN No
SYMBOL
1, 19
1G, G2
2, 3, 4, 5,
6, 7, 8, 9
18, 17, 16,
15, 14, 13,
12, 11
10
A1 to A8
Data Inputs
Y1 to Y8
Bus Outputs
GND
Ground (0V)
VCC
Positive Supply Voltage
20
NAME AND FUNCTION
Output Enable Inputs
M54/M74HC540/541
IEC LOGIC SYMBOLS
HC540
HC541
TRUTH TABLE
INPUT
G1
H
X
OUTPUT
G2
X
H
An
X
X
Yn (HC540)
Z
Z
Yn (HC541)
Z
Z
L
L
L
L
H
L
H
L
H
L
X: ”H” or ”L”
Z: High impedance
CIRCUIT SCHEMATIC (Per Circuit)
HC540
HC541
3/12
M54/M74HC540/541
ABSOLUTE MAXIMUM RATINGS
Symbol
Value
Unit
VCC
VI
Supply Voltage
DC Input Voltage
-0.5 to +7
-0.5 to VCC + 0.5
V
V
VO
DC Output Voltage
-0.5 to VCC + 0.5
V
IIK
IOK
DC Input Diode Current
DC Output Diode Current
± 20
± 20
mA
mA
IO
DC Output Source Sink Current Per Output Pin
± 35
mA
DC VCC or Ground Current
± 70
mA
500 (*)
mW
ICC or IGND
Parameter
PD
Power Dissipation
Tstg
TL
Storage Temperature
Lead Temperature (10 sec)
-65 to +150
300
o
o
C
C
Absolute Maximum Ratings are those values beyond which damage tothe device may occur. Functional operation under these conditions is not implied.
(*) 500 mW: ≅ 65 oC derate to 300 mW by 10mW/oC: 65 oC to 85 oC
RECOMMENDED OPERATING CONDITIONS
Symbol
VCC
Parameter
Supply Voltage
VI
Input Voltage
VO
Top
Output Voltage
Operating Temperature:
tr, tf
Input Rise and Fall Time
4/12
M54HC Series
M74HC Series
VCC = 2 V
Value
2 to 6
Unit
V
0 to VCC
V
0 to VCC
-55 to +125
-40 to +85
0 to 1000
V
C
o
C
ns
VCC = 4.5 V
0 to 500
VCC = 6 V
0 to 400
o
M54/M74HC540/541
DC SPECIFICATIONS
Test Conditions
Symbol
VIH
V IL
Parameter
High Level Input
Voltage
Low Level Input
Voltage
Value
VCC
(V)
TA = 25 oC
54HC and 74HC
Min. Typ. Max.
2.0
1.5
1.5
1.5
4.5
6.0
3.15
4.2
3.15
4.2
3.15
4.2
High Level
Output Voltage
0.5
0.5
0.5
4.5
1.35
1.35
1.35
2.0
4.5
6.0
4.5
VOL
Low Level Output
Voltage
6.0
2.0
4.5
6.0
4.5
6.0
II
IOZ
ICC
Input Leakage
Current
3 State Output
Off State Current
Quiescent Supply
Current
1.8
1.8
Unit
V
2.0
6.0
V OH
-40 to 85 oC -55 to 125 oC
74HC
54HC
Min. Max. Min. Max.
V
1.8
1.9
2.0
1.9
1.9
VI =
IO=-20 µA
VIH
or
V IL IO=-6.0 mA
4.4
5.9
4.5
6.0
4.4
5.9
4.4
5.9
4.18
4.31
4.13
4.10
IO=-7.8 mA
5.68
5.8
0.0
5.63
5.60
V
VI =
IO= 20 µA
VIH
or
V IL IO= 6.0 mA
0.1
0.1
0.1
0.0
0.1
0.1
0.1
0.0
0.17
0.1
0.26
0.1
0.33
0.1
0.40
IO= 7.8 mA
0.18
V
0.26
0.33
0.40
VI = VCC or GND
±0.1
±1
±1
µA
VI = VIH or VIL
VO = VCC or GND
6.0 VI = VCC or GND
±0.5
±5
±10
µA
4
40
80
µA
6.0
6.0
5/12
M54/M74HC540/541
AC ELECTRICAL CHARACTERISTICS (C L = 50 pF, Input t r = tf = 6 ns)
Test Conditions
o
Symbol
Parameter
VCC
(V)
CL
(pF)
tTLH
tTHL
Output Transition
Time
2.0
4.5
50
Propagation
Delay Time
6.0
2.0
4.5
6.0
tPLH
tPHL
tPZL
tPZH
tPLZ
tPHZ
CIN
CPD (*)
Output Enable
Time
Output Disable
Time
Input Capacitance
Power Dissipation
Capacitance
2.0
4.5
6.0
2.0
4.5
TA = 25 C
54HC and 74HC
Min.
50
150
50
RL = 1KΩ
6.0
2.0
4.5
6.0
150
RL = 1KΩ
2.0
4.5
6.0
50
RL = 1KΩ
Value
-40 to 85 oC -55 to 125 oC
74HC
54HC
Min.
Max.
75
19
Min.
Max.
90
18
Unit
Typ.
25
7
Max.
60
12
6
40
10
9
10
85
17
14
13
105
21
18
15
130
26
22
56
14
12
47
13
115
23
20
110
22
145
29
25
140
28
175
35
30
165
33
11
61
17
14
19
135
27
23
24
170
34
29
28
205
41
35
ns
52
15
13
110
22
19
140
28
24
165
33
28
ns
5
31
10
10
10
pF
ns
ns
ns
ns
pF
(*) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load.
(Refer to Test Circuit). Average operting current can be obtained by the following equation. ICC(opr) = CPD •VCC •fIN + ICC/8 (per gate)
TEST CIRCUIT ICC (Opr.)
HC540
6/12
M54/M74HC540/541
SWITCHING CHARACTERISTICS TEST CIRCUIT
HC540
HC541
7/12
M54/M74HC540/541
Plastic DIP20 (0.25) MECHANICAL DATA
mm
DIM.
MIN.
a1
0.254
B
1.39
TYP.
inch
MAX.
MIN.
TYP.
MAX.
0.010
1.65
0.055
0.065
b
0.45
0.018
b1
0.25
0.010
D
25.4
1.000
E
8.5
0.335
e
2.54
0.100
e3
22.86
0.900
F
7.1
0.280
I
3.93
0.155
L
Z
3.3
0.130
1.34
0.053
P001J
8/12
M54/M74HC540/541
Ceramic DIP20 MECHANICAL DATA
mm
DIM.
MIN.
TYP.
inch
MAX.
MIN.
TYP.
MAX.
A
25
0.984
B
7.8
0.307
D
E
3.3
0.5
e3
0.130
1.78
0.020
22.86
0.070
0.900
F
2.29
2.79
0.090
0.110
G
0.4
0.55
0.016
0.022
I
1.27
1.52
0.050
0.060
L
0.22
0.31
0.009
0.012
M
0.51
1.27
0.020
0.050
N1
P
Q
4° (min.), 15° (max.)
7.9
8.13
5.71
0.311
0.320
0.225
P057H
9/12
M54/M74HC540/541
SO20 MECHANICAL DATA
mm
DIM.
MIN.
TYP.
A
a1
inch
MAX.
MIN.
TYP.
2.65
0.10
0.104
0.20
a2
MAX.
0.004
0.007
2.45
0.096
b
0.35
0.49
0.013
0.019
b1
0.23
0.32
0.009
0.012
C
0.50
0.020
c1
45° (typ.)
D
12.60
13.00
0.496
0.512
E
10.00
10.65
0.393
0.419
e
1.27
0.050
e3
11.43
0.450
F
7.40
7.60
0.291
0.299
L
0.50
1.27
0.19
0.050
M
S
0.75
0.029
8° (max.)
P013L
10/12
M54/M74HC540/541
PLCC20 MECHANICAL DATA
mm
DIM.
MIN.
TYP.
inch
MAX.
MIN.
TYP.
MAX.
A
9.78
10.03
0.385
0.395
B
8.89
9.04
0.350
0.356
D
4.2
4.57
0.165
0.180
d1
2.54
0.100
d2
0.56
0.022
E
7.37
8.38
0.290
0.330
e
1.27
0.050
e3
5.08
0.200
F
0.38
0.015
G
0.101
0.004
M
1.27
0.050
M1
1.14
0.045
P027A
11/12
M54/M74HC540/541
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No
license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned
in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.
SGS-THOMSON Microelectronics products are not authorized for use ascritical components in life support devices or systems without express
written approval of SGS-THOMSON Microelectonics.
 1994 SGS-THOMSON Microelectronics - All Rights Reserved
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