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M87C257 датащи(PDF) 16 Page - STMicroelectronics

номер детали M87C257
подробное описание детали  Address Latched 256 Kbit (32Kb x8) UV EPROM and OTP EPROM
PDF  22 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M87C257 датащи(HTML) 16 Page - STMicroelectronics

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DC and AC parameters
M87C257
16/22
Table 10.
Read mode AC characteristics 2(1) (2)
1.
TA = 0 to 70 °C, –40 to 85 °C; –40 to 105 °C or –40 to 125 °C; VCC = 5V ± 5% or 5V ± 10%; VPP = VCC
2.
VCC must be applied simultaneously with or before VPP and removed simultaneously or after VPP.
Symbol
Alt
Parameter
Test
Condition
M87C257
Unit
-90
-10
-12
-15/-20
Min Max Min Max Min Max Min Max
tAVQV
tACC
Address Valid to
Output Valid
E = VIL,
G = VIL
90
100
120
150
ns
tAVASL
tAL
Address Valid to
Address Strobe Low
7
777
ns
tASHASL
tLL
Address Strobe
High to Address
Strobe Low
35
35
35
35
ns
tASLAX
tLA
Address Strobe Low
to Address
Transition
20
20
20
20
ns
tASLGL
tLOE
Address Strobe Low
to Output Enable
Low
20
20
20
20
ns
tELQV
tCE
Chip Enable Low to
Output Valid
G = VIL
90
100
120
150
ns
tGLQV
tOE
Output Enable Low
to Output Valid
E = VIL
40
40
50
60
ns
tEHQZ
(3)
3.
Sampled only, not 100% tested.
tDF
Chip Enable High to
Output Hi-Z
G = VIL
0400
30
0
40
0
40
ns
tGHQZ
(3)
tDF
Output Enable High
to Output Hi-Z
E = VIL
0400
30
0
40
0
40
ns
tAXQX
tOH
Address Transition
to Output Transition
E = VIL,
G = VIL
0
000
ns



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