Motorola MC74HC540AN, MC74HC540ADW Datasheet

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SEMICONDUCTOR TECHNICAL DATA

3–1

REV 6

 Motorola, Inc. 1995

10/95

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High–Performance Silicon–Gate CMOS

The MC74HC540A is identical in pinout to the LS540. The device inputs
are compatible with Standard CMOS outputs. External pullup resistors make
them compatible with LSTTL outputs.

The HC540A is an octal 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.

The HC540A is similar in function to the HC541A, which has non–inverting
outputs.

• Output Drive Capability: 15 LSTTL Loads

• Outputs Directly Interface to CMOS, NMOS and TTL

• Operating Voltage Range: 2 to 6V

• Low Input Current: 1µA

• High Noise Immunity Characteristic of CMOS Devices

• In Compliance With the JEDEC Standard No. 7A Requirements

• Chip Complexity: 124 FETs or 31 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

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

H

L
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

MC74HCXXXAN
MC74HCXXXADW

Plastic
SOIC

1

20

1

20

MC74HC540A

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)

2.0

6.0

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 VCC = 2.0 V

(Figure 1) VCC = 4.5 V

VCC = 6.0 V

0
0
0

1000

500
400

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

|I

out

| ≤ 20µA

2.0

3.0

4.5

6.0

1.50

2.10

3.15

4.20

1.50

2.10

3.15

4.20

1.50

2.10

3.15

4.20

V

V

IL

Maximum Low–Level Input Voltage V

out

= VCC – 0.1V

|I

out

| ≤ 20µA

2.0

3.0

4.5

6.0

0.50

0.90

1.35

1.80

0.50

0.90

1.35

1.80

0.50

0.90

1.35

1.80

V

V

OH

Minimum High–Level Output
Voltage

Vin = V

IL

|I

out

| ≤ 20µA

2.0

4.5

6.0

1.9

4.4

5.9

1.9

4.4

5.9

1.9

4.4

5.9

V

Vin = V

IL

|I

out

| ≤ 3.6mA

|I

out

| ≤ 6.0mA

|I

out

| ≤ 7.8mA

3.0

4.5

6.0

2.48

3.98

5.48

2.34

3.84

5.34

2.20

3.70

5.20

V

OL

Maximum Low–Level Output
Voltage

Vin = V

IH

|I

out

| ≤ 20µA

2.0

4.5

6.0

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

0.1

V

Vin = V

IH

|I

out

| ≤ 3.6mA

|I

out

| ≤ 6.0mA

|I

out

| ≤ 7.8mA

3.0

4.5

6.0

0.26

0.26

0.26

0.33

0.33

0.33

0.40

0.40

0.40

I

in

Maximum Input Leakage Current Vin = VCC or GND 6.0 ±0.1 ±1.0 ±1.0 µA

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.