SN74LS74D 查看數據表（PDF） - Motorola => Freescale

零件编号

产品描述 (功能)

生产厂家

SN74LS74D

DUAL D-TYPE POSITIVE-EDGE-TRIGGERED FLIP-FLOPS WITH PRESET AND CLEAR

Motorola => Freescale 

SN54 / 74LS74A

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

FAST AND LS TTL DATA

5-74

Share Link: