SN74LS74AD 查看數據表（PDF） - ON Semiconductor

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SN74LS74AD

Dual D−Type Positive Edge−Triggered Flip−Flop

ON Semiconductor 

SN74LS74A

AC WAVEFORMS

D*

1.3 V

1.3 V

th(L)

ts(L)

tW(H)

th(H)

ts(H)

tW(L)

1.3 V

1.3 V

CP

1

tPHL

fMAX

tPLH

Q

1.3 V

1.3 V

tPLH

tPHL

1.3 V

1.3 V

Q

*The shaded areas indicate when the input is permitted to change for predictable output performance.

Figure 1. Clock to Output Delays, Data

Set-Up and Hold Times, Clock Pulse Width

SET

CLEAR

Q

Q

tW

1.3 V

1.3 V

tPLH

1.3 V

tPHL

1.3 V

tW

1.3 V

1.3 V

tPHL

1.3 V

tPLH

1.3 V

Figure 2. Set and Clear to Output Delays,

Set and Clear Pulse Widths

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