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參數(shù)資料
| 型號： | SN54ALS527 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | FUSE-PROGRAMMABLE IDENTITY COMPARATORS |
| 中文描述： | 保險絲可編程身分比較器 |
| 文件頁數(shù)： | 6/7頁 |
| 文件大?。?/td> | 95K |
| 代理商： | SN54ALS527 |
SN54ALS526, SN54ALS527, SN54ALS528
SN74ALS526, SN74ALS527, SN74ALS528
FUSE-PROGRAMMABLE IDENTITY COMPARATORS
SDAS051A – JUNE 1984–REVISED MAY 1986
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
6
programing parameters
PARAMETER
MIN
MAX
5.5
0.8
12.5
7.5
10
1.24
31
29
26
50
10
UNIT
V
V
V
V
VIH
VIL
VIHH
VCC
High-level input voltage
Low-level input voltage
Program-pulse input voltage
Supply voltage
2
11.5
6.5
IIHH
Program pulse input current
Program-pulse input current
Pin (G low)
G
’ALS526
’ALS527
’ALS528
mA
ICCHH
Supply current with VIHH applied
mA
tW
tr
Pulse duration, program
Rise time, program voltage
10
μ
s
μ
s
Test
Test
Blow Fuse
Verify
Verify
Verify
VIH
VIL
VIHH
VIH
VIL
VIHH
VIL
VIH
VIL
90%
10%
90%
tw
tr
P
Inputs
Pn
G
P=Q
Don’t Care
Illustrated above is the following sequence:
NOTES: A. It is desired to program a particular input to recognize a high level input. With G low and all P inputs at VIL, the output is low if no
fuses are blown.
B. With G low and all P inputs at VIH, the output is high unless all fuses are blown.
C. When the desired input is taken to VIHH, the output goes low if the fuse is intact.
D. G is pulsed to VIHH blowing the desired fuse.
E. After G is low, output will be high indicating that the fuse is blown.
F. The programmed input returns to VIH, the output is high unless all fuses have been blown.
G. All P inputs are taken to VIL, the output is high if a fuse has been blown.
For the ’ALS527, P8 through P11 inputs must match the Q8 through Q11 inputs.
Figure 1. Programming Waveforms
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