LS245 datasheet(2/4 Pages) ONSEMI

Teilenummer	LS245

Bauteilbeschribung	Octal Bus Transceiver

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SN74LS245

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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 for

All Inputs

VIL

Input LOW Voltage

0.8

V

Guaranteed Input LOW Voltage for

All Inputs

VT+–VT–

Hysteresis

0.2

0.4

V

VCC = MIN

VIK

Input Clamp Diode Voltage

–0.65

–1.5

V

VCC = MIN, IIN = –18 mA

V

Output HIGH Voltage

2.4

3.4

V

VCC = MIN, IOH = –3.0 mA

VOH

Output HIGH Voltage

2.0

V

VCC = MIN, IOH = MAX

V

Output LOW Voltage

0.25

0.4

V

IOL = 12 mA

VCC = VCC MIN,

V

or V

VOL

Output LOW Voltage

0.35

0.5

V

IOL = 24 mA

VIN = VIL or VIH

per Truth Table

IOZH

Output Off Current HIGH

20

µA

VCC = MAX, VOUT = 2.7 V

IOZL

Output Off Current LOW

–200

µA

VCC = MAX, VOUT = 0.4 V

A or B, DR or

E

20

µA

VCC = MAX, VIN = 2.7 V

IIH

Input HIGH Current

DR or E

0.1

mA

VCC = MAX, VIN = 7.0 V

A or B

0.1

mA

VCC = MAX, VIN = 5.5 V

IIL

Input LOW Current

–0.2

mA

VCC = MAX, VIN = 0.4 V

IOS

Output Short Circuit Current (Note 1.)

–40

–225

mA

VCC = MAX

Power Supply Current

Total, Output HIGH

70

ICC

Total, Output LOW

90

mA

VCC = MAX

Total at HIGH Z

95

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

AC CHARACTERISTICS (TA = 25°C, VCC = 5.0 V, TRISE/TFALL ≤ 6.0 ns)

Limits

Symbol

Parameter

Min

Typ

Max

Unit

Test Conditions

tPLH

tPHL

Propagation Delay, Data to Output

8.0

12

ns

CL = 45 pF,

tPZH

Output Enable Time to HIGH Level

25

40

ns

CL = 45 pF,

RL = 667 Ω

tPZL

Output Enable Time to LOW Level

27

40

ns

tPLZ

Output Disable Time from LOW Level

15

25

ns

CL = 5.0 pF,

tPHZ

Output Disable Time from HIGH Level

15

25

ns

CL = 5.0 F,

RL = 667 Ω

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