5-611

FAST AND LS TTL DATA

SN54/74LS795 THRU SN54/74LS798

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

VOH

Output HIGH Voltage

74

2.7

3.5

V

VCC = MIN, IOH = MAX

VOL

Output LOW Voltage

54, 74

0.25

0.4

V

IOL = 8.0 mA

VCC = VCC MIN,

VIN = VIL or VIH

per Truth Table

VOL

Output LOW Voltage

74

0.35

0.5

V

IOL = 16 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

– 20

µA

VCC = MAX, VOUT = 0.4 V

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

A Input, Both G at 0.4 V

G Input

– 0.4

– 0.4

mA

VCC = MAX, VIN = 0.4 V

A Input, Both G at 2.0 V

– 20

µA

VCC = MAX, VIN = 0.5 V

IOS

Short Circuit Current (Note 1)

– 30

–130

mA

VCC = MAX

ICC

Power Supply

Current

LS795/LS797

26

mA

VCC = MAX

ICC

Power Supply

Current

LS795/LS798

21

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

LS795 / LS797

LS796 / LS798

Unit

Test Conditions

Symbol

Parameter

Min

Typ

Max

Min

Typ

Max

Unit

Test Conditions

tPLH

tPHL

Propagation Delay

11

15

16

22

6.0

13

10

17

ns

VCC = 5.0 V

CL = 15 pF

tPZH

tPZL

Output Enable Time

16

13

25

20

17

16

27

25

ns

VCC = 5.0 V

CL = 15 pF

tPHZ

tPLZ

Output Disable Time

13

19

20

27

13

18

20

27

ns

CL = 5.0 pF