Semiconductor Components Industries, LLC, 2000
March, 2000 – Rev. 2
1 Publication Order Number:
MC74HCT541A/D
MC74HCT541A
Octal 3-State Non-Inverting
Buffer/Line Driver/
Line Receiver With
LSTTL-Compatible Inputs
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 34567
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
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MARKING
DIAGRAMS
1
20
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
SOIC WIDE–20
DW SUFFIX
CASE 751D
HCT541A
AWLYYWW
PDIP–20
N SUFFIX
CASE 738
1
20
MC74HCT541AN
AWLYYWW
1
20
1
20
Device Package Shipping
ORDERING INFORMATION
MC74HCT541AN PDIP–20 1440 / Box
MC74HCT541ADW SOIC–WIDE
38 / Rail
MC74HCT541ADWR2 SOIC–WIDE 1000 / Reel
MC74HCT541A
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2
DC Supply Voltage (Referenced to GND)
DC Input Voltage (Referenced to GND)
DC Output Voltage (Referenced to GND)
DC Input Current, per Pin
DC Output Current, per Pin
DC Supply Current, VCC and GND Pins
Power Dissipation in Still Air Plastic DIP†
SOIC Package†
Storage Temperature Range
Lead Temperature, 1 mm from Case for 10 Seconds
Plastic DIP or SOIC Package
_
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 ON Semiconductor High–Speed CMOS Data Book (DL129/D).
RECOMMENDED OPERATING CONDITIONS
DC Supply Voltage (Referenced to GND)
DC Input Voltage, Output Voltage (Referenced to GND)
Operating Temperature Range, All Package Types
Input Rise/Fall Time (Figure 1)
ns
DC CHARACTERISTICS (Voltages Referenced to GND)
V
Guaranteed Limit
Symbol Parameter Condition
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
∆I
CC
Additional Quiescent Supply
Vin = 2.4V , Any One Input
I
out
= 0µA
5.5
2.9 2.4
mA
1. Information on typical parametric values can be found in Chapter 2 of the ON Semiconductor 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.
MC74HCT541A
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3
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 ON
Semiconductor 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
ON Semiconductor 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
1kΩ
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