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參數(shù)資料
| 型號： | SN54LVC74 |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 通用總線功能 |
| 英文描述： | DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS WITH CLEAR AND PRESET |
| 中文描述： | 雙上升沿觸發(fā)的，有清除和預(yù)設(shè)功能的D型觸發(fā)器 |
| 文件頁數(shù)： | 4/9頁 |
| 文件大小： | 130K |
| 代理商： | SN54LVC74 |
SN54LVC74A, SN74LVC74A
DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH CLEAR AND PRESET
SCAS287H – JANUARY 1993 – REVISED JUNE 1998
4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
SN54LVC74A
MIN
TYP
SN74LVC74A
MIN
TYP
VCC–0.2
UNIT
MAX
MAX
IOH= 100
μ
IOH = –100
A
1.65 V to 3.6 V
2.7 V to 3.6 V
VCC–0.2
IOH = –4 mA
IOH = –8 mA
1.65 V
1.2
VOH
2.3 V
1.7
V
IOH= 12 mA
IOH = –12 mA
2.7 V
2.2
2.2
3 V
2.4
2.4
IOH = –24 mA
3 V
2.2
2.2
IOL= 100
μ
IOL = 100
A
1.65 V to 3.6 V
0.2
2.7 V to 3.6 V
0.2
VOL
IOL = 4 mA
IOL = 8 mA
IOL = 12 mA
IOL = 24 mA
VI = 5.5 V or GND
VI = VCC or GND,
One input at VCC – 0.6 V,
Other inputs at VCC or GND
VI = VCC or GND
1.65 V
0.45
V
2.3 V
0.7
2.7 V
0.4
0.4
3 V
0.55
±
5
10
0.55
±
5
10
II
ICC
3.6 V
μ
A
μ
A
IO = 0
3.6 V
ICC
2.7 V to 3.6 V
500
500
μ
A
Ci
3.3 V
5
5
pF
All typical values are at VCC = 3.3 V, TA = 25
°
C.
timing requirements over recommended operating free-air temperature range (unless otherwise
noted) (see Figure 3)
SN54LVC74A
VCC = 2.7 V
VCC = 3.3 V
±
0.3 V
UNIT
MIN
MAX
MIN
MAX
fclock
Clock frequency
83
100
MHz
tw
Pulse duration
PRE or CLR low
3.3
3.3
ns
CLK high or low
3.3
3.3
tsu
Setup time before CLK
↑
Data
3.4
3
ns
PRE or CLR inactive
2.2
2
th
Hold time, data after CLK
↑
1
1
ns
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