74LS 데이터 시트보기 (PDF) - ON Semiconductor

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74LS

SYNCHRONOUS 4-BIT UP/DOWN COUNTER

ON Semiconductor 

SN54 / 74LS669

CLOCK

INPUT

LOAD

INPUT

DATA INPUTS

A,B,C, and D

ENABLE P or

ENABLE T

UP/DOWN

INPUT

PARAMETER MEASUREMENT INFORMATION

tw(clock)

tw(clock)

1.3 V

1.3 V

1.3 V

1.3 V

ts

ts

th

1.3 V

1.3 V

ts

th

1.3 V

1.3 V

ts

1.3 V

ts

th

1.3 V

1.3 V

3V

1.3 V

0V

3V

0V

3V

0V

th

0V

1.3 V

3V

ts

th

3V

1.3 V

1.3 V

0V

ENABLE T

INPUT

RIPPLE

CARRY

OUTPUT

VOLTAGE WAVEFORMS

1.3 V

tPHL

1.3 V

3V

1.3 V

0V

tPLH

VOL

1.3 V

VOH

FAST AND LS TTL DATA

5-4

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