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參數(shù)資料
| 型號： | 4ALS520 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 8-BIT IDENTITY COMPARATORS |
| 中文描述： | 8位身分比較器 |
| 文件頁數(shù)： | 7/9頁 |
| 文件大?。?/td> | 138K |
| 代理商： | 4ALS520 |
SN54ALS520, SN74ALS518, SN74ALS520, SN74ALS521
8-BIT IDENTITY COMPARATORS
SDAS224B – JUNE 1982 – REVISED NOVEMBER 1995
7
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54ALS520
SN74ALS520
SN74ALS521
UNIT
MIN
TYP
MAX
MIN
TYP
MAX
VIK
VCC = 4.5 V,
II = – 18 mA
– 1.5
V
VCC = 4.5 V to 5.5 V,
IOH = – 0.4 mA
VCC –2
VOH
VCC =4 5V
IOH = – 1 mA
2.4
3.3
V
VCC = 4.5 V
IOH = – 2.6 mA
2.4
3.2
VOL
VCC =4 5V
IOL = 12 mA
0.25
0.4
0.25
0.4
V
VOL
VCC = 4.5 V
IOL = 24 mA
0.35
0.5
V
II
′ALS520 Q inputs
VCC =5 5V
VI = 5.5 V
0.1
mA
II
All other inputs
VCC = 5.5 V
VI = 7 V
0.1
mA
I
′ALS520 Q inputs
VCC =5 5V
VI =2 7V
– 0.2
mA
IIH
All other inputs
VCC = 5.5 V,
VI = 2.7 V
20
A
IIL
′ALS520 Q inputs
VCC =5 5V
VI =0 4V
– 0.6
mA
IIL
All other inputs
VCC = 5.5 V,
VI = 0.4 V
– 0.1
mA
IO
VCC = 5.5 V,
VO = 2.25 V
–20
–112
–30
–112
mA
ICC
′ALS520
VCC =5 5V
See Note 1
12
19
12
19
mA
ICC
SN74ALS521
VCC = 5.5 V,
See Note 1
12
19
12
19
mA
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 G grounded, and P and Q at 4.5 V.
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§
UNIT
PARAMETER
(INPUT)
(OUTPUT)
SN54ALS520
SN74ALS520
SN74ALS521
UNIT
MIN
MAX
MIN
MAX
tPLH
PorQ
PQ
3
19
3
12
ns
tPHL
P or Q
P = Q
3
25
5
20
ns
tPLH
G
P=Q
2
18
2
12
ns
tPHL
G
P = Q
5
23
5
22
ns
§ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
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