5-435

FAST AND LS TTL DATA

SN54/74LS259

Symbol

Parameter

Limits

Unit

Test Conditions

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

54

0.7

V

Guaranteed Input LOW Voltage for

All Inputs

VIL

Input LOW Voltage

74

0.8

V

Guaranteed Input LOW Voltage for

All Inputs

VIK

Input Clamp Diode Voltage

– 0.65

– 1.5

V

VCC = MIN, IIN = – 18 mA

VOH

Output HIGH Voltage

54

2.5

3.5

V

VCC = MIN, IOH = MAX, VIN = VIH

or VIL per Truth Table

VOH

Output HIGH Voltage

74

2.7

3.5

V

VCC = MIN, IOH = MAX, VIN = VIH

or VIL per Truth Table

VOL

Output LOW Voltage

54, 74

0.25

0.4

V

IOL = 4.0 mA

VCC = VCC MIN,

VIN = VIL or VIH

per Truth Table

VOL

Output LOW Voltage

74

0.35

0.5

V

IOL = 8.0 mA

VIN = VIL or VIH

per Truth Table

IIH

Input HIGH Current

20

µA

VCC = MAX, VIN = 2.7 V

IIH

Input HIGH Current

0.1

mA

VCC = MAX, VIN = 7.0 V

IIL

Input LOW Current

– 0.4

mA

VCC = MAX, VIN = 0.4 V

IOS

Short Circuit Current (Note 1)

–20

– 100

mA

VCC = MAX

ICC

Power Supply Current

36

mA

VCC = MAX

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

Symbol

Parameter

Limits

Unit

Test Conditions

Symbol

Parameter

Min

Typ

Max

Unit

Test Conditions

tPLH

tPHL

Turn-Off Delay, Enable to Output

Turn-On Delay, Enable to Output

22

15

35

24

ns

ns

CL = 15 pF

tPLH

tPHL

Turn-Off Delay, Data to Output

Turn-On Delay, Data to Output

20

13

32

21

ns

ns

CL = 15 pF

tPLH

tPHL

Turn-Off Delay, Address to Output

Turn-On Delay, Address to Output

24

18

38

29

ns

ns

CL = 15 pF

tPHL

Turn-On Delay, Clear to Output

17

27

ns

Symbol

Parameter

Limits

Unit

Symbol

Parameter

Min

Typ

Max

Unit

ts

Input Setup Time

20

ns

tW

Pulse Width, Clear or Enable

15

ns

th

Hold Time, Data

5.0

ns

th

Hold Time, Address

20

ns