SN74LS348N データシートの表示（PDF） - Motorola => Freescale

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SN74LS348N

8-INPUT PRIORITY ENCODERS WITH 3-STATE OUTPUTS

Motorola => Freescale 

SN54/74LS348 • SN54/74LS848

AC CHARACTERISTICS (VCC = 5.0 V, TA = 25°C)

Symbol

From

(Input)

To

(Output)

Waveform

LS348

Limits

LS848

Limits

Min Typ Max Min Typ Max Unit Test Conditions

tPLH

tPHL

1 thru 7

A0, A1 or A2

In-Phase

output

11 17

20 30

12 18

ns

20 30

tPLH

tPHL

1 thru 7

A0, A1 or A2

Out-of-Phase

output

23 35

23 35

23 35

ns

23 35

CL = 45 pF

RL = 667 Ω

tPZH

tPZL

EI

A0, A1 or A2

25 39

24 41

25 39

ns

24 41

tPLH

tPHL

0 thru 7

Out-of-Phase

E0

output

11 18

26 40

11 18

ns

26 40

tPLH

tPHL

tPLH

tPHL

tPLH

tPHL

tPHZ

tPLZ

0 thru 7

EI

EI

EI

GS

GS

EO

A0, A1 or A2

In-Phase

output

In-Phase

output

In-Phase

output

38 55

9.0 21

11 17

14 36

17 21

25 40

18 27

23 35

38 55

ns

9.0 21

11 17

ns

14 36

17 21

ns

30 45

18 27

ns

23 35

CL = 15 pF

RL = 2.0 Ω

CL = 5.0 pF

RL = 667 Ω

FAST AND LS TTL DATA

5-502

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