4-116

FAST AND LS TTL DATA

MC54/74F245

DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)

Limits

Symbol

Parameter

Min

Typ

Max

Unit

Test Conditions

VIH

Input HIGH Voltage

2.0

V

Guaranteed Input HIGH Voltage

VIL

Input LOW Voltage

0.8

V

Guaranteed Input LOW Voltage

VIK

Input Clamp Diode Voltage

–1.2

V

IIN = –18 mA

VCC = MIN

VOH

Output HIGH Voltage, An Outputs

54, 74

2.4

3.3

V

IOH = –3.0 mA

VCC = 4.50 V

74

2.7

3.3

V

IOH = –3.0 mA

VCC = 4.75 V

54, 74

2.4

3.4

V

IOH = –3.0 mA

VCC = 4.50 V

VOH

Output HIGH Voltage, Bn Outputs

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

VOL

Output LOW Voltage, An Outputs

54

0.35

0.5

V

IOL = 20 mA

VCC = MIN

74

0.35

0.5

V

IOL = 24 mA

VOL

Output LOW Voltage, Bn Outputs

54

0.55

V

IOL = 48 mA

VCC = MIN

74

0.55

V

IOL = 64 mA

IOZH + IIH

Output Off Current HIGH

70

µA

VOUT = 2.7 V

VCC = MAX

IOZL + IIL

Output Off Current LOW

–650

mA

VOUT = 0.5 V

VCC = MAX

OE, T/R Inputs

20

µA

VIN = 2.7 V

IIH

Input HIGH Current

OE, T/R Inputs

100

µA

VIN = 7.0 V

VCC = MAX

An, Bn Inputs

1.0

mA

VIN = 5.5 V

T/R Input

–0.8

mA

IIL

Input LOW Current

OE Input

–1.2

mA

VIN = 0.5 V

VCC = MAX

IOS

Output Short Circuit

An Outputs

–60

–150

mA

VOUT = GND

VCC = MAX

Current (Note 2)

Bn Outputs

–100

–225

mA

VOUT = GND

VCC = MAX

ICCH

Power Supply Current HIGH

90

mA

VCC = MAX, Outputs HIGH

ICCL

Power Supply Current LOW

120

mA

VCC = MAX, Outputs LOW

ICCZ

Power Supply Current OFF

110

mA

VCC = MAX, Outputs OFF

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.

AC CHARACTERISTICS

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

Max

Min

Max

Min

Max

Unit

tPLH

tPHL

Propagation Delay

An to Bn or Bn to An

2.5

2.5

6.0

6.0

2.5

2.5

8.0

8.0

2.5

2.5

7.0

7.0

ns

tPZH

tPZL

Output Enable Time

3.0

3.5

7.0

8.0

3.0

3.5

9.0

10

3.0

3.5

8.0

9.0

ns

tPHZ

tPLZ

Output Disable Time

2.5

2.0

6.5

6.5

2.5

2.0

8.5

8.5

2.5

2.0

7.5

7.5

ns