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參數(shù)資料
| 型號： | SN54ALS109AFK |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 通用總線功能 |
| 英文描述： | DUAL J-K POSITIVE-EDGE-TRIGGERED FLIP-FLOPS WITH CLEAR AND PRESET |
| 中文描述： | 雙JK上升沿觸發(fā)器，沒有明確的和預(yù)置觸發(fā)器 |
| 文件頁數(shù)： | 3/9頁 |
| 文件大?。?/td> | 138K |
| 代理商： | SN54ALS109AFK |
SN54ALS109A, SN54AS109A, SN74ALS109A, SN74AS109A
DUAL J-K POSITIVE-EDGE-TRIGGERED FLIP-FLOPS
WITH CLEAR AND PRESET
SDAS198B – APRIL 1982 – REVISED AUGUST 1995
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54ALS109A
MIN
TYP
SN74ALS109A
MIN
TYP
UNIT
MAX
MAX
VIK
VOH
VCC = 4.5 V,
VCC = 4.5 V to 5.5 V,
II = –18 mA
IOH = –0.4 mA
IOL = 4 mA
IOL = 8 mA
–1.5
–1.5
V
VCC–2
VCC–2
V
VOL
VCC= 4 5 V
VCC = 4.5 V
0.25
0.4
0.25
0.4
V
0.35
0.5
II
CLK, J, or K
VCC= 5 5 V
VCC = 5.5 V,
VI= 7 V
VI = 7 V
0.1
0.1
mA
PRE or CLR
0.2
0.2
IIH
CLK, J, or K
VCC= 5 5 V
VCC = 5.5 V,
VI= 2 7 V
VI = 2.7 V
20
20
μ
A
PRE or CLR
40
40
IIL
CLK, J, or K
VCC= 5 5 V
VCC = 5.5 V,
VI= 0 4 V
VI = 0.4 V
–0.2
–0.2
mA
PRE or CLR
–0.4
–0.4
IO
ICC
All typical values are at VCC = 5 V, TA = 25
°
C.
The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
NOTE 1: ICC is measured with J, K, CLK, and PRE grounded, then with J, K, CLK, and CLR grounded.
VCC = 5.5 V,
VCC = 5.5 V,
VO = 2.25 V
See Note 1
–20
–112
–30
–112
mA
2.4
4
2.4
4
mA
switching characteristics (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 500
,
TA = MIN to MAX§
SN54ALS109A
MIN
MAX
UNIT
SN74ALS109A
MIN
MAX
fmax
tPLH
tPHL
tPLH
tPHL
30
34
MHz
PRE or CLR
Q or Q
3
17
3
13
ns
5
17
5
15
CLK
Q or Q
5
5
21
20
5
5
16
18
ns
§For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
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