Semiconductor Components Industries, LLC, 2005

July, 2005 - Rev. 11

Publication Order Number:

MC74HC245A/D

MC74HC245A

Octal 3-State Noninverting

Bus Transceiver

High-Performance Silicon-Gate CMOS

The MC74HC245A is identical in pinout to the LS245. The device

inputs are compatible with standard CMOS outputs; with pull-up
resistors, they are compatible with LSTTL outputs.

The HC245A is a 3-state noninverting transceiver that is used for

2-way asynchronous communication between data buses. The device
has an active-low Output Enable pin, which is used to place the I/O
ports into high-impedance states. The Direction control determines
whether data flows from A to B or from B to A.

Features

Output Drive Capability: 15 LSTTL Loads

Outputs Directly Interface to CMOS, NMOS, and TTL

Operating Voltage Range: 2.0 to 6.0 V

Low Input Current: 1

High Noise Immunity Characteristic of CMOS Devices

In Compliance with the Requirements Defined by JEDEC Standard

No. 7A

Moisture Sensitivity: MSL1 for All Packages

Chip Complexity: 308 FETs or 77 Equivalent Gates

Pb-Free Packages are Available*

*For additional information on our Pb-Free strategy and soldering details, please

download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.

http://onsemi.com

MARKING

DIAGRAMS

SOIC-20

DW SUFFIX
CASE 751D

74HC245A

AWLYYWWG

245A

ALYW

TSSOP-20

DT SUFFIX

CASE 948E

SOEIAJ-20

F SUFFIX

CASE 967

74HC245A

AWLYWWG

See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.

ORDERING INFORMATION

PDIP-20

N SUFFIX

CASE 738

MC74HC245AN

AWLYYWWG

= Assembly Location

WL, L

= Wafer Lot

YY, Y

= Year

WW, W

= Work Week

= Pb-Free Package

(Note: Microdot may be in either location)

MC74HC245A

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Figure 1. Pin Assignment

DIRECTION

GND

OUTPUT ENABLE

DATA

PORT

DIRECTION

OUTPUT ENABLE

PIN 10 = GND
PIN 20 = V

B
DATA
PORT

Figure 2. Logic Diagram

FUNCTION TABLE

Control Inputs

Operation

Output
Enable

Direction

Data Transmitted from Bus B to Bus A

Data Transmitted from Bus A to Bus B

Buses Isolated (High-Impedance State)

X = don't care

ORDERING INFORMATION

Device

Package

Shipping

MC74HC245AN

PDIP-20

18 Units / Rail

MC74HC245ANG

PDIP-20

(Pb-Free)

18 Units / Rail

MC74HC245ADW

SOIC-20 WIDE

38 Units / Rail

MC74HC245ADWG

SOIC-20 WIDE

(Pb-Free)

38 Units / Rail

MC74HC245ADWR2

SOIC-20 WIDE

1000 Tape & Reel

MC74HC245ADWR2G

SOIC-20 WIDE

(Pb-Free)

1000 Tape & Reel

MC74HC245ADT

TSSOP-20*

75 Units / Rail

MC74HC245ADTG

TSSOP-20*

75 Units / Rail

MC74HC245ADTR2

TSSOP-20*

2500 Tape & Reel

MC74HC245ADTR2G

TSSOP-20*

2500 Tape & Reel

MC74HC245AF

SOEIAJ-20

40 Units / Rail

MC74HC245AFG

SOEIAJ-20

(Pb-Free)

40 Units / Rail

MC74HC245AFEL

SOEIAJ-20

2000 Tape & Reel

MC74HC245AFELG

SOEIAJ-20

(Pb-Free)

2000 Tape & Reel

For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.

*This package is inherently Pb-Free.

MC74HC245A

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MAXIMUM RATINGS

(Note 1)

Symbol

Parameter

Value

Unit

DC Supply Voltage

0.5 to

)

7.0

DC Input Voltage

0.5 to V

)

0.5

OUT

DC Output Voltage

(Note 2)

0.5 to V

)

0.5

DC Input Diode Current

DC Output Diode Current

OUT

DC Output Sink Current

DC Supply Current per Supply Pin

GND

DC Ground Current per Ground Pin

STG

Storage Temperature Range

65 to

)

150

Lead Temperature, 1 mm from Case for 10 Seconds

260

Junction Temperature Under Bias

)

150

Thermal Resistance

PDIP

SOIC

TSSOP

67
96

128

C/W

Power Dissipation in Still Air at 85

PDIP

SOIC

TSSOP

750
500
450

MSL

Moisture Sensitivity

Level 1

Flammability Rating

Oxygen Index: 30% to 35%

UL 94 V-0 @ 0.125 in

ESD

ESD Withstand Voltage

Human Body Model (Note 3)

Machine Model (Note 4)

Charged Device Model (Note 5)

2000

200

1000

LATCHUP

Latchup Performance

Above V

and Below GND at 85

C (Note 6)

300

Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
1. Measured with minimum pad spacing on an FR4 board, using 10 mm-by-1 inch, 20 ounce copper trace with no air flow.
2. I

absolute maximum rating must observed.

3. Tested to EIA/JESD22-A114-A.
4. Tested to EIA/JESD22-A115-A.
5. Tested to JESD22-C101-A.
6. Tested to EIA/JESD78.

RECOMMENDED OPERATING CONDITIONS

ÎÎÎÎ

Symbol

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ

Parameter

ÎÎÎÎÎ

Min

ÎÎÎÎ

Max

ÎÎÎ

Unit

ÎÎÎÎ

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ

DC Supply Voltage (Referenced to GND)

ÎÎÎÎÎ

2.0

ÎÎÎÎ

6.0

ÎÎÎ

ÎÎÎÎ

, V

out

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ

DC Input Voltage, Output Voltage (Referenced to GND)

ÎÎÎÎÎ

ÎÎÎÎ

ÎÎÎ

ÎÎÎÎ

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ

Operating Temperature, All Package Types

ÎÎÎÎÎ

ÎÎÎÎ

+125

ÎÎÎ

ÎÎÎÎ

, t

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ

Input Rise and Fall Time

= 2.0 V

(Figure 3)

= 4.5 V

= 6.0 V

ÎÎÎÎÎ

0
0
0

ÎÎÎÎ

1000

500
400

ÎÎÎ

MC74HC245A

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DC ELECTRICAL CHARACTERISTICS

(Voltages Referenced to GND)

ÎÎÎÎ

ÎÎÎÎÎÎÎÎÎÎ

ÎÎÎÎÎÎÎÎÎ

ÎÎÎ

ÎÎÎÎÎÎÎÎÎÎ

Guaranteed Limit

ÎÎ

ÎÎÎÎ

Symbol

ÎÎÎÎÎÎÎÎÎÎ

Parameter

ÎÎÎÎÎÎÎÎÎ

Test Conditions

ÎÎÎ

ÎÎÎÎ

55 to

ÎÎÎÎ

125

ÎÎ

Unit

ÎÎÎÎ

ÎÎÎÎÎÎÎÎÎÎ

Î ÎÎÎÎÎÎÎÎÎ

ÎÎÎÎÎÎÎÎÎÎ

Minimum High-Level Input Voltage

ÎÎÎÎÎÎÎÎÎ

Î ÎÎÎÎÎÎÎÎ

ÎÎÎÎÎÎÎÎÎ

out

= V

0.1 V

out

ÎÎÎ

2.0
3.0
4.5
6.0

ÎÎÎÎ

1.5
2.1

3.15

4.2

ÎÎÎÎ

1.5
2.1

3.15

4.2

ÎÎÎÎ

1.5
2.1

3.15

4.2

ÎÎ

ÎÎÎÎ

ÎÎÎÎÎÎÎÎÎÎ

Î ÎÎÎÎÎÎÎÎÎ

ÎÎÎÎÎÎÎÎÎÎ

Maximum Low-Level Input Voltage

ÎÎÎÎÎÎÎÎÎ

Î ÎÎÎÎÎÎÎÎ

ÎÎÎÎÎÎÎÎÎ

out

= 0.1 V

out

ÎÎÎ

2.0
3.0
4.5
6.0

ÎÎÎÎ

0.5
0.9

1.35

1.8

ÎÎÎÎ

0.5
0.9

1.35

1.8

ÎÎÎÎ

0.5
0.9

1.35

1.8

ÎÎ

ÎÎÎÎ

ÎÎÎÎÎÎÎÎÎÎ

Î ÎÎÎÎÎÎÎÎÎ

ÎÎÎÎÎÎÎÎÎÎ

Minimum High-Level Output
Voltage

ÎÎÎÎÎÎÎÎÎ

= V

out

ÎÎÎ

2.0
4.5
6.0

ÎÎÎÎ

1.9
4.4
5.9

ÎÎÎÎ

1.9
4.4
5.9

ÎÎÎÎ

1.9
4.4
5.9

ÎÎ

ÎÎÎÎÎÎÎÎÎ

= V

out

2.4 mA

out

6.0 mA

out

7.8 mA

ÎÎÎ

3.0
4.5
6.0

ÎÎÎÎ

2.48
3.98
5.48

ÎÎÎÎ

2.34
3.84
5.34

ÎÎÎÎ

2.2
3.7
5.2

ÎÎÎÎ

ÎÎÎÎÎÎÎÎÎÎ

Î ÎÎÎÎÎÎÎÎÎ

ÎÎÎÎÎÎÎÎÎÎ

Maximum Low-Level Output
Voltage

ÎÎÎÎÎÎÎÎÎ

= V

out

ÎÎÎ

2.0
4.5
6.0

ÎÎÎÎ

0.1
0.1
0.1

ÎÎÎÎ

0.1
0.1
0.1

ÎÎÎÎ

0.1
0.1
0.1

ÎÎ

ÎÎÎÎÎÎÎÎÎ

= V

out

2.4 mA

out

6.0 mA

out

7.8 mA

ÎÎÎ

3.0
4.5
6.0

ÎÎÎÎ

0.26
0.26
0.26

ÎÎÎÎ

0.33
0.33
0.33

ÎÎÎÎ

0.4
0.4
0.4

ÎÎÎÎ

ÎÎÎÎÎÎÎÎÎÎ

Maximum Input Leakage Current

ÎÎÎÎÎÎÎÎÎ

= V

or GND

ÎÎÎ

6.0

ÎÎÎÎ

0.1

ÎÎÎÎ

1.0

ÎÎÎÎ

1.0

ÎÎ

ÎÎÎÎ

ÎÎÎÎÎÎÎÎÎÎ

Maximum Three-State Leakage
Current

ÎÎÎÎÎÎÎÎÎ

Output in High-Impedance State
V

= V

or V

out

= V

or GND

ÎÎÎ

6.0

ÎÎÎÎ

0.5

ÎÎÎÎ

5.0

ÎÎÎÎ

ÎÎ

ÎÎÎÎ

ÎÎÎÎÎÎÎÎÎÎ

Maximum Quiescent Supply
Current (per Package)

ÎÎÎÎÎÎÎÎÎ

= V

or GND

out

= 0

ÎÎÎ

6.0

ÎÎÎÎ

4.0

ÎÎÎÎ

160

ÎÎ

7. Information on typical parametric values and high frequency or heavy load considerations can be found in the ON Semiconductor

High-Speed CMOS Data Book (DL129/D).

AC ELECTRICAL CHARACTERISTICS

= 50 pF, Input t

= t

= 6 ns)

ÎÎÎÎ

Symbol

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ

Parameter

ÎÎÎ

ÎÎÎÎÎÎÎÎÎÎ

Guaranteed Limit

ÎÎ

Unit

ÎÎÎÎ

55 to

ÎÎÎÎ

125

ÎÎÎÎ

PLH

PHL

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ

Î ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ

Maximum Propagation Delay,
A to B, B to A

(Figures 1 and 3)

ÎÎÎ

2.0
3.0
4.5
6.0

ÎÎÎÎ

75
55
15
13

ÎÎÎÎ

95
70
19
16

ÎÎÎÎ

110

80
22
19

ÎÎ

ÎÎÎÎ

PLZ

PHZ

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ

Î ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ

Maximum Propagation Delay,
Direction or Output Enable to A or B

(Figures 2 and 4)

ÎÎÎ

2.0
3.0
4.5
6.0

ÎÎÎÎ

110

90
22
19

ÎÎÎÎ

140

110

28
24

ÎÎÎÎ

165
130

33
28

ÎÎ

ÎÎÎÎ

PZL

PZH

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ

Î ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ

Maximum Propagation Delay,
Output Enable to A or B

(Figures 2 and 4)

ÎÎÎ

2.0
3.0
4.5
6.0

ÎÎÎÎ

110

90
22
19

ÎÎÎÎ

140

110

28
24

ÎÎÎÎ

165
130

33
28

ÎÎ

ÎÎÎÎ

TLH

THL

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ

Maximum Output Transition Time,
Any Output

(Figures 1 and 3)

ÎÎÎ

2.0
3.0
4.5
6.0

ÎÎÎÎ

60
23
12
10

ÎÎÎÎ

75
27
15
13

ÎÎÎÎ

90
32
18
15

ÎÎ

ÎÎÎÎ

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ

Maximum Input Capacitance (Pin 1 or Pin 19)

ÎÎÎ

ÎÎÎÎ

ÎÎ

ÎÎÎÎ

out

ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ

Maximum Three-State I/O Capacitance

(I/O in High-Impedance State)

ÎÎÎ

ÎÎÎÎ

ÎÎ

8. For propagation delays with loads other than 50 pF, and information on typical parametric values, see the ON Semiconductor High-Speed

CMOS Data Book (DL129/D).

Power Dissipation Capacitance (Per Transceiver Channel) (Note 9)

Typical @ 25

C, V

= 5.0 V

9. Used to determine the no-load dynamic power consumption: P

= C

f + I

. For load considerations, see the ON

Semiconductor High-Speed CMOS Data Book (DL129/D).

MC74HC245A

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ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
"Typical" parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,
and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
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MC74HC245A/D

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Part Number MC74HC245A