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参数资料
| 型号： | SN74LV74PW |
| 厂商： | Texas Instruments, Inc. |
| 英文描述： | Bipolar Power TO264 NPN 16A 250V; Package: TO-3PBL (TO-264); No of Pins: 3; Container: Rail; Qty per Container: 25 |
| 中文描述： | 双上升沿触发的D型触发器 |
| 文件页数： | 2/7页 |
| 文件大小： | 137K |
| 代理商： | SN74LV74PW |
SN54LV74, SN74LV74
DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS
SCLS189C – FEBRUARY 1993 – REVISED APRIL 1996
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
FUNCTION TABLE
INPUTS
OUTPUTS
PRE
CLR
CLK
D
Q
Q
L
H
X
X
H
L
H
L
X
X
L
H
H
L
L
X
↑
↑
L
X
H
H
H
H
H
L
H
H
L
L
H
H
H
X
Q0
Q0
This configuration is nonstable; that is, it does not
persist when PRE or CLR returns to its inactive
(high) level.
logic symbol
S
4
3
1CLK
1D
2
1D
R
1
1Q
5
6
C1
10
11
2CLK
12
2D
13
2Q
9
8
1PRE
2PRE
1CLR
2CLR
1Q
2Q
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
Pin numbers shown are for D, DB, J, PW, and W packages.
logic diagram, each flip-flop (positive logic)
TG
C
C
TG
C
C
TG
C
C
C
C
TG
C
C
PRE
CLK
D
CLR
Q
Q
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