M87C257-12F1 STMicroelectronics, M87C257-12F1 Datasheet - Page 16

• Manufacturer Part Number: M87C257-12F1
• Description: IC EPROM 256KBIT 120NS 28CDIP
• Manufacturer: STMicroelectronics

Specifications of M87C257-12F1

• Format - Memory: EPROMs
• Memory Type: UV EPROM
• Memory Size: 256K (32K x 8)
• Speed: 120ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-CDIP (0.600", 15.24mm) Window
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DC and AC parameters
16/22
Table 10.
1. T
2. V
3. Sampled only, not 100% tested.
Symbol
t
t
t
GHQZ
ASHASL
t
t
EHQZ
t
t
t
t
t
ASLAX
ASLGL
AVASL
AVQV
ELQV
GLQV
AXQX
A
CC
= 0 to 70 °C, –40 to 85 °C; –40 to 105 °C or –40 to 125 °C; V
(3)
(3)
must be applied simultaneously with or before V
t
t
t
t
Alt
ACC
LOE
t
t
t
t
t
t
CE
OE
OH
AL
LA
DF
DF
LL
Read mode AC characteristics 2
Address Valid to
Output Valid
Address Valid to
Address Strobe Low
Address Strobe
High to Address
Strobe Low
Address Strobe Low
to Address
Transition
Address Strobe Low
to Output Enable
Low
Chip Enable Low to
Output Valid
Output Enable Low
to Output Valid
Chip Enable High to
Output Hi-Z
Output Enable High
to Output Hi-Z
Address Transition
to Output Transition
Parameter
Condition
E = V
E = V
G = V
G = V
G = V
G = V
E = V
E = V
Test
IL
IL
IL
IL
IL
IL
IL
IL
,
,
Min Max Min Max Min Max Min Max
PP
35
20
20
7
0
0
0
(1) (2)
and removed simultaneously or after V
-90
90
90
40
40
40
CC
35
20
20
7
0
0
0
= 5V ± 5% or 5V ± 10%; V
-10
M87C257
100
100
40
30
30
35
20
20
7
0
0
0
-12
120
120
50
40
40
35
20
20
7
0
0
0
-15/-20
PP
PP
= V
.
150
150
M87C257
60
40
40
CC
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns