MOTOROLA MC54F240, MC54F241, MC54F244, MC74F240, MC74F241 Technical data

1 2 3 4 5 6 7 8 9

1112

13

141516171819

10

20

1 2 3 4 5 6 7 8

9

1112

13

141516171819

10

20

MC54/74F244

VCCOE

b

GND

OE

a

1 2 3 4 5 6 7 8

9

1112

13

141516171819

MC54/74F240

VCCOE

b

GND

CONNECTION DIAGRAMS

10

20

OE

a

MC54/74F241

VCCOE

b

GND

OE

a

Y

a0Ib0Ya1Ib1Ya2Ib2Ya3Ib3

Ia0Y

b0Ia1Yb1

Ia2Y

b2Ia3Yb3

Y

a0

Ib0Ya1Ib1Ya2Ib2Ya3I

b3

I

a0

Yb0I

a1

Yb1Ia2Yb2Ia3Y

b3

Ya0Ib0Ya1Ib1Ya2Ib2Ya3I

b3

Ia0Yb0Ia1Yb1Ia2Yb2Ia3Y

b3

4-108

FAST AND LS TTL DATA

OCTAL BUFFER/LINE DRIVER
WITH 3-STATE OUTPUTS

The F240, F241 and F244 are octal buffers and line drivers designed to be
employed as memory address drivers, clock drivers, and bus-oriented trans­mitters/receivers which provide improved PC board density.

• 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers

• Outputs Sink 64 mA

• 15 mA Source Current

• Input Clamp Diodes Limit High-Speed Termination Effects

• ESD

>

4000 Volts

DW SUFFIX

SOIC

CASE 751D-03

20

1

N SUFFIX

PLASTIC

CASE 738-03

20

1

J SUFFIX

CERAMIC

CASE 732-03

20

1

ORDERING INFORMATION

MC54/74F240
MC54/74F241
MC54/74F244

OCTAL BUFFER/LINE DRIVER

WITH 3-STATE OUTPUTS

FAST SCHOTTKY TTL

MC54FXXXJ Ceramic
MC74FXXXN Plastic
MC74FXXXDW SOIC

查询MC54/74F240供应商查询MC54/74F240供应商

4-109

FAST AND LS TTL DATA

MC54/74F240 • MC54/74F241 • MC54/74F244

OEaIaOE

bIbYaYb

H

L

Z

H

L

Z

L
H
X

L
L

H

L
H
X

L
L

H

Inputs Outputs

FUNCTION TABLE
MC54/74F240

H = HIGH Voltage Level; L = LOW Voltage Level; X = Don’t Care; Z = High Impedance

OEaIaOEbIbYaY

b

L
H
Z

L
H
Z

L
H
X

H
H
L

L

H

X

L
L
H

Inputs Outputs

FUNCTION TABLE
MC54/74F241

OEaIaOE

bIbYaYb

L
H
Z

L
H
Z

L
H
X

L
L

H

L
H
X

L
L

H

Inputs Outputs

FUNCTION TABLE
MC54/74F244

GUARANTEED OPERATING RANGES

Symbol Parameter Min Typ Max Unit

V

CC

Supply Voltage 54, 74 4.5 5.0 5.5 V

T

A

Operating Ambient Temperature Range 54 –55 25 125 °C

74 0 25 70

I

OH

Output Current — High 54

74

–12
–15

mA

I

OL

Output Current — Low 54

74

48
64

mA

4-110

FAST AND LS TTL DATA

MC54/74F240 • MC54/74F241 • MC54/74F244

DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)

Limits

Symbol Parameter Min Typ Max Unit Test Conditions

V

IH

Input HIGH Voltage 2.0 V Guaranteed Input HIGH Voltage

V

IL

Input LOW Voltage 0.8 V Guaranteed Input LOW Voltage

V

IK

Input Clamp Diode Voltage –1.2 V IIN = –18 mA VCC = MIN

V

OH

Output HIGH Voltage 54, 74 2.4 3.4 V IOH = –3.0 mA VCC = 4.50 V

74 2.7 3.4 V IOH = –3.0 mA VCC = 4.75 V
54 2.0 V IOH = –12 mA VCC = 4.50 V
74 2.0 V IOH = –15 mA VCC = 4.50 V

V

OL

Output LOW Voltage 54 0.55 V IOL = 48 mA VCC = MIN

74 0.55 V IOL = 64 mA

I

OZH

Output Off Current HIGH 50 µA V

OUT

= 2.7 V VCC = MAX

I

OZL

Output Off Current LOW –50 µA V

OUT

= 0.5 V VCC = MAX

I

IH

Input HIGH Current 20 µA VIN = 2.7 V VCC = MAX

100 VIN = 7.0 V

I

IL

Input LOW Current

Data Inputs
F241, F244

–1.6 mA VIN = 0.5 V VCC = MAX

Other –1.0

I

OS

Output Short Circuit Current 74 –100 –225 mA V

OUT

= GND VCC = MAX

(Note 2) 54 –100 –275 mA

I

CCH

Power Supply Current HIGH F240 35

F241, F244 60

I

CCL

Power Supply Current LOW F240 75 mA VCC = MAX

F241, F244 90

I

CCZ

Power Supply Current OFF F240 75

F241, F244 90

NOTES:

1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable device type.

2. Not more than one output should be shorted at a time, nor for more than 1 second.

4-111

FAST AND LS TTL DATA

MC54/74F240 • MC54/74F241 • MC54/74F244

AC CHARACTERISTICS – MC54/74F240

54/74F 54F 74F

TA = +25°C TA = -55°C to +125°C TA = 0°C to +70°C

VCC = +5.0 V VCC = 5.0 V ± 10% VCC = 5.0 V ± 10%

CL = 50 pF CL = 50 pF CL = 50 pF

Symbol Parameter Min Typ Max Min Max Min Max Unit

t

PLH

Propagation Delay, Data to Output 2.5 5.1 7.0 2.5 9.0 2.5 8.0 ns

t

PHL

1.5 3.5 4.7 1.5 6.0 1.5 5.7

t

PZH

Output Enable Time 2.0 3.5 5.2 2.0 6.5 2.0 5.7 ns

t

PZL

4.0 6.9 9.0 4.0 13.5 4.0 10

t

PHZ

Output Disable Time 2.0 4.0 5.3 2.0 6.5 2.0 6.3 ns

t

PLZ

1.5 6.0 8.0 2.0 12.5 1.5 9.5

AC CHARACTERISTICS – MC54/74F241

54/74F 54F 74F

TA = +25°C TA = -55°C to +125°C TA = 0°C to +70°C

VCC = +5.0 V VCC = 5.0 V ± 10% VCC = 5.0 V ± 10%

CL = 50 pF CL = 50 pF CL = 50 pF

Symbol Parameter Min Typ Max Min Max Min Max Unit

t

PLH

Propagation Delay, Data to Output 2.5 4.0 5.2 2.0 6.5 2.5 6.2 ns

t

PHL

2.5 4.0 5.2 2.0 7.0 2.5 6.5

t

PZH

Output Enable Time 2.0 4.3 5.7 2.0 7.0 2.0 6.7 ns

t

PZL

2.0 5.4 7.0 2.0 8.5 2.0 8.0

t

PHZ

Output Disable Time 2.0 4.5 6.0 2.0 7.0 2.0 7.0 ns

t

PLZ

2.0 4.5 6.5 2.0 12.5 2.0 7.5

AC CHARACTERISTICS – MC54/74F244

54/74F 54F 74F

TA = +25°C TA = -55°C to +125°C TA = 0°C to +70°C

VCC = +5.0 V VCC = 5.0 V ± 10% VCC = 5.0 V ± 10%

CL = 50 pF CL = 50 pF CL = 50 pF

Symbol Parameter Min Typ Max Min Max Min Max Unit

t

PLH

Propagation Delay, Data to Output 2.5 4.0 5.2 2.5 6.5 2.5 6.2 ns

t

PHL

2.5 4.0 5.2 2.5 7.0 2.5 6.5

t

PZH

Output Enable Time 2.0 4.3 5.7 2.0 7.0 2.0 6.7 ns

t

PZL

2.0 5.4 7.0 2.0 8.5 2.0 8.0

t

PHZ

Output Disable Time 2.0 4.5 6.0 2.0 7.0 2.0 7.0 ns

t

PLZ

2.0 4.5 6.0 2.0 10.0 2.0 7.0