Page 1
SEMICONDUCTOR TECHNICAL DATA
3–1
REV 1
Motorola, Inc. 1995
10/95
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High–Performance Silicon–Gate CMOS
The MC74HCT541A is identical in pinout to the LS541. This device may
be used as a level converter for interfacing TTL or NMOS outputs to high
speed CMOS inputs.
The HCT541A is an octal non–inverting buffer/line driver/line receiver
designed to be used with 3–state memory address drivers, clock drivers, and
other bus–oriented systems. This device features inputs and outputs on
opposite sides of the package and two ANDed active–low output enables.
• Output Drive Capability: 15 LSTTL Loads
• TTL/NMOS–Compatible Input Levels
• Outputs Directly Interface to CMOS, NMOS and TTL
• Operating Voltage Range: 4.5 to 5.5V
• Low Input Current: 1µA
• In Compliance With the JEDEC Standard No. 7A Requirements
• Chip Complexity: 134 FETs or 33.5 Equivalent Gates
18
Y1
2
A1
17
Y2
3
A2
16
Y3
4
A3
15
Y4
5
A4
14
Y5
6
A5
13
Y6
7
A6
12
Y7
8
A7
11
Y8
9
A8
OE1
OE2
1
19
Output
Enables
Data
Inputs
Non–Inverting
Outputs
PIN 20 = V
CC
PIN 10 = GND
LOGIC DIAGRAM
Pinout: 20–Lead Packages (Top View)
1920 18 17 16 15 14
21 3 4 5 6 7
V
CC
13
8
12
9
11
10
OE2 Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8
OE1 A1 A2 A3 A4 A5 A6 A7 A8 GND
L
L
H
X
L
L
X
H
L
H
X
X
FUNCTION TABLE
Inputs
Output Y
OE1 OE2 A
L
H
Z
Z
Z = High Impedance
X = Don’t Care
DW SUFFIX
SOIC PACKAGE
CASE 751D–04
N SUFFIX
PLASTIC PACKAGE
CASE 738–03
ORDERING INFORMATION
MC74HCTXXXAN
MC74HCTXXXADW
Plastic
SOIC
1
20
1
20
Page 2
MC74HCT541A
MOTOROLA High–Speed CMOS Logic Data
DL129 — Rev 6
3–2
MAXIMUM RATINGS*
Symbol
Parameter
Value
Unit
V
CC
DC Supply Voltage (Referenced to GND)
– 0.5 to + 7.0
V
V
in
DC Input Voltage (Referenced to GND)
– 0.5 to VCC + 0.5
V
V
out
DC Output Voltage (Referenced to GND)
– 0.5 to VCC + 0.5
V
I
in
DC Input Current, per Pin
± 20
mA
I
out
DC Output Current, per Pin
± 35
mA
I
CC
DC Supply Current, VCC and GND Pins
± 75
mA
P
D
Power Dissipation in Still Air Plastic DIP†
SOIC Package†
750
500
mW
T
stg
Storage Temperature Range
– 65 to + 150
_
C
T
L
Lead Temperature, 1 mm from Case for 10 Seconds
Plastic DIP or SOIC Package
260
_
C
*Maximum Ratings are those values beyond which damage to the device may occur.
Functional operation should be restricted to the Recommended Operating Conditions.
†Derating — Plastic DIP: – 10 mW/_C from 65_ to 125_C
SOIC Package: – 7 mW/_C from 65_ to 125_C
For high frequency or heavy load considerations, see Chapter 2 of the Motorola High–Speed CMOS Data Book (DL129/D).
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Min
Max
Unit
V
CC
DC Supply Voltage (Referenced to GND)
4.5
5.5
V
Vin, V
out
DC Input Voltage, Output Voltage (Referenced to GND)
0
V
CC
V
T
A
Operating Temperature Range, All Package Types
– 55
+ 125
_
C
tr, t
f
Input Rise/Fall Time (Figure 1)
0
500
ns
DC CHARACTERISTICS (Voltages Referenced to GND)
V
Guaranteed Limit
Symbol Parameter Condition
V
CC
V
–55 to 25°C ≤85°C ≤125°C Unit
V
IH
Minimum High–Level Input Voltage V
out
= 0.1V or VCC – 0.1V
|I
out
| ≤ 20µA
4.5
5.5
2.0
2.0
2.0
2.0
2.0
2.0
V
V
IL
Maximum Low–Level Input Voltage V
out
= 0.1V or VCC – 0.1V
|I
out
| ≤ 20µA
4.5
5.5
0.8
0.8
0.8
0.8
0.8
0.8
V
V
OH
Minimum High–Level Output
Voltage
Vin = VIH or V
IL
|I
out
| ≤ 20µA
4.5
5.5
4.4
5.4
4.4
5.4
4.4
5.4
V
Vin = VIH or V
IL|Iout
| ≤ 6.0mA 4.5 3.98 3.84 3.70
V
OL
Maximum Low–Level Output
Voltage
Vin = VIH or V
IL
|I
out
| ≤ 20µA
4.5
5.5
0.1
0.1
0.1
0.1
0.1
0.1
V
Vin = VIH or V
IL|Iout
| ≤ 6.0mA 4.5 0.26 0.33 0.40
I
in
Maximum Input Leakage Current Vin = VCC or GND 5.5 ±0.1 ±1.0 ±1.0 µA
I
OZ
Maximum Three–State Leakage
Current
Output in High Impedance State
Vin = VIL or V
IH
V
out
= VCC or GND
5.5 ±0.5 ±5.0 ±10.0 µA
I
CC
Maximum Quiescent Supply
Current (per Package)
Vin = VCC or GND
I
out
= 0µA
5.5 4 40 160 µA
∆ICCAdditional Quiescent Supply Current
Vin = 2.4V, Any One Input
≥ –55°C 25 to 125°C
Vin = VCC or GND, Other Inputs
I
out
= 0µA
5.5
2.9 2.4
mA
1. Information on typical parametric values can be found in Chapter 2 of the Motorola High–Speed CMOS Data Book (DL129/D).
2. Total Supply Current = ICC + Σ∆ICC.
This device contains protection
circuitry to guard against damage
due to high static voltages or electric
fields. However, precautions must
be taken to avoid applications of any
voltage higher than maximum rated
voltages to this high–impedance circuit. For proper operation, Vin and
V
out
should be constrained to the
range GND v (Vin or V
out
) v VCC.
Unused inputs must always be
tied to an appropriate logic voltage
level (e.g., either GND or VCC).
Unused outputs must be left open.
Page 3
MC74HCT541A
High–Speed CMOS Logic Data
DL129 — Rev 6
3–3 MOTOROLA
AC CHARACTERISTICS (V
CC
= 5.0V, CL = 50 pF, Input tr = tf = 6 ns)
Guaranteed Limit
Symbol Parameter –55 to 25°C ≤85°C ≤125°C Unit
t
PLH
,
t
PHL
Maximum Propagation Delay, Input A to Output Y
(Figures 1 and 3)
23 28 32 ns
t
PLZ
,
t
PHZ
Maximum Propagation Delay, Output Enable to Output Y
(Figures 2 and 4)
30 34 38 ns
t
PZL
,
t
PZH
Maximum Propagation Delay, Output Enable to Output Y
(Figures 2 and 4)
30 34 38 ns
t
TLH
,
t
THL
Maximum Output Transition Time, Any Output
(Figures 1 and 3)
12 15 18 ns
C
in
Maximum Input Capacitance 10 10 10 pF
C
out
Maximum Three–State Output Capacitance (Output in High Impedance
State)
15 15 15 pF
NOTE: For propagation delays with loads other than 50 pF, and information on typical parametric values, see Chapter 2 of the Motorola High–
Speed CMOS Data Book (DL129/D).
Typical @ 25°C, VCC = 5.0 V
C
PD
Power Dissipation Capacitance (Per Buffer)*
55
pF
*Used to determine the no–load dynamic power consumption: PD = CPD V
CC
2
f + ICC VCC. For load considerations, see Chapter 2 of the
Motorola High–Speed CMOS Data Book (DL129/D).
Figure 1.
CL*
*Includes all probe and jig capacitance
TEST
POINT
OE1 or OE2
1.3V
3.0V
GND
OUTPUT Y
t
PZL
OUTPUT Y
t
PZH
HIGH
IMPEDANCE
V
OL
V
OH
HIGH
IMPEDANCE
10%
90%
t
PLZ
t
PHZ
1.3V
1.3V
Figure 2.
SWITCHING WAVEFORMS
DEVICE
UNDER
TEST
OUTPUT
TEST CIRCUITS
Figure 3. Figure 4.
CL*
*Includes all probe and jig capacitance
TEST
POINT
DEVICE
UNDER
TEST
OUTPUT
1k
Ω
CONNECT TO VCC WHEN
TESTING t
PLZ
AND t
PZL
.
CONNECT TO GND WHEN
TESTING t
PHZ
and t
PZH
.
3.0V
GND
INPUT A
OUTPUT Y
t
PLH
t
PHL
90%
1.3V
10%
t
r
t
TLH
t
f
t
THL
90%
1.3V
10%
1.3V
Page 4
MC74HCT541A
MOTOROLA High–Speed CMOS Logic Data
DL129 — Rev 6
3–4
PIN DESCRIPTIONS
INPUTS
A1, A2, A3, A4, A5, A6, A7, A8 (PINS 2, 3, 4, 5, 6, 7, 8,
9) — Data input pins. Data on these pins appear in non–in-
verted form on the corresponding Y outputs, when the outputs are enabled.
CONTROLS
OE1, OE2 (PINS 1, 19) — Output enables (active–low).
When a low voltage is applied to both of these pins, the out-
puts are enabled and the device functions as a non–inverting
buffer. When a high voltage is applied to either input, the outputs assume the high impedance state.
OUTPUTS
Y1, Y2, Y3, Y4, Y5, Y6, Y7, Y8 (PINS 18, 17, 16, 15, 14,
13, 12, 11) — Device outputs. Depending upon the state of
the output enable pins, these outputs are either non–inverting outputs or high–impedance outputs.
LOGIC DETAIL
V
CC
To 7 Other
Buffers
One of Eight
Buffers
INPUT A
OE1
OE2
OUTPUT Y
Page 5
MC74HCT541A
High–Speed CMOS Logic Data
DL129 — Rev 6
3–5 MOTOROLA
OUTLINE DIMENSIONS
N SUFFIX
PLASTIC PACKAGE
CASE 738–03
ISSUE E
DW SUFFIX
PLASTIC SOIC PACKAGE
CASE 751D–04
ISSUE E
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION L TO CENTER OF LEAD WHEN
FORMED PARALLEL.
4. DIMENSION B DOES NOT INCLUDE MOLD
FLASH.
M
L
J
20 PL
M
B
M
0.25 (0.010) T
DIM MIN MAX MIN MAX
MILLIMETERSINCHES
A 25.66 27.171.010 1.070
B 6.10 6.600.240 0.260
C 3.81 4.570.150 0.180
D 0.39 0.550.015 0.022
G 2.54 BSC0.100 BSC
J 0.21 0.380.008 0.015
K 2.80 3.550.110 0.140
L 7.62 BSC0.300 BSC
M 0 15 0 15
N 0.51 1.010.020 0.040
_ __ _
E
1.27 1.770.050 0.070
1
11
10
20
–A–
SEATING
PLANE
K
N
FG
D
20 PL
–T–
M
A
M
0.25 (0.010) T
E
B
C
F
1.27 BSC0.050 BSC
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.150
(0.006) PER SIDE.
5. DIMENSION D DOES NOT INCLUDE
DAMBAR PROTRUSION. ALLOWABLE
DAMBAR PROTRUSION SHALL BE 0.13
(0.005) TOTAL IN EXCESS OF D DIMENSION
AT MAXIMUM MATERIAL CONDITION.
–A–
–B–
20
1
11
10
S
A
M
0.010 (0.25) B
S
T
D20X
M
B
M
0.010 (0.25)
P10X
J
F
G
18X
K
C
–T–
SEATING
PLANE
M
R
X 45
_
DIM MIN MAX MIN MAX
INCHESMILLIMETERS
A 12.65 12.95 0.499 0.510
B 7.40 7.60 0.292 0.299
C 2.35 2.65 0.093 0.104
D 0.35 0.49 0.014 0.019
F 0.50 0.90 0.020 0.035
G 1.27 BSC 0.050 BSC
J 0.25 0.32 0.010 0.012
K 0.10 0.25 0.004 0.009
M 0 7 0 7
P 10.05 10.55 0.395 0.415
R 0.25 0.75 0.010 0.029
_ _
_ _
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MC74HCT541A/D
*MC74HCT541A/D*
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