SN74LS166D データシートの表示（PDF） - Motorola => Freescale

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SN74LS166D

8-BIT SHIFT REGISTERS LOW POWER SCHOTTKY

Motorola => Freescale 

SN54 / 74LS166

TEST TABLE FOR SYNCHRONOUS INPUTS

DATA INPUT

FOR TEST

SHIFT/LOAD

OUTPUT TESTED

H

Serial

Input

0V

4.5 V

QH at tn+1

QH at tn+8

AC WAVEFORMS

tw(clear)

3V

CLEAR INPUT

Vref

Vref

0V

tn tn + 1 (SEE NOTE 1) tn tn + 1

CLOCK INPUT Vref

DATA

INPUT

(SEE TEST

TABLE)

tPHL

(clear-Q)

tw(clock)

Vref

Vref

OUTPUT Q

Vref

Vref

tsu

th

Vref

tPLH

(CLK-Q)

Vref

3V

Vref

tsu

th

0V

3V

Vref

0V

tPHL

(CLK-Q)

VOH

Vref

VOL

NOTE 1. tn = bit time before clocking transition

NOTE 1. tn+1 = bit time after one clocking transition

NOTE 1. tn+8 = bit time after eight clocking transition

NOTE 1. LS166 Vref = 1.3 V.

AC CHARACTERISTICS (TA = 25°C)

Symbol

fMAX

tPHL

tPLH

tPHL

Parameter

Maximum Clock Frequency

Clear to Output

Clock to Output

AC SETUP REQUIREMENTS (TA = 25°C)

Symbol

tW

ts

ts

th

Parameter

Clock Clear Pulse Width

Mode Control Setup Time

Data Setup Time

Hold Time, Any Input

Limits

Min Typ Max

25

35

19

30

23

35

24

35

Unit

MHz

ns

ns

Limits

Min Typ Max Unit

30

ns

30

ns

20

ns

15

ns

Test Conditions

VCC = 5.0 V

CL = 15 pF

Test Conditions

VCC = 5.0 V

FAST AND LS TTL DATA

5-4

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