M27C256B-70XF1 STMicroelectronics, M27C256B-70XF1 Datasheet - Page 17

• Manufacturer Part Number: M27C256B-70XF1
• Description: IC EPROM 256KBIT 70NS 28CDIP
• Manufacturer: STMicroelectronics

Specifications of M27C256B-70XF1

• Format - Memory: EPROMs
• Memory Type: UV EPROM
• Memory Size: 256K (32K x 8)
• Speed: 70ns
• Interface: Parallel
• Voltage - Supply: 4.75 V ~ 5.25 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 28-CDIP (0.600", 15.24mm) Window
• Capacitance, Input: 6 pF
• Capacitance, Output: 12 pF
• Current, Input, Leakage: ±10 μA (Read)
• Current, Operating: 30 mA (Read)
• Current, Output, Leakage: ±10 μA (Read)
• Density: 256K
• Organization: 32K×8
• Package Type: FDIP28W
• Temperature, Operating: 0 to +70 °C
• Time, Access: 70 ns
• Time, Fall: ≤20 ns
• Time, Rise: ≤20 ns
• Voltage, Input, High: 6 V (Read)
• Voltage, Input, Low: 0.8 V (Read)
• Voltage, Output, High: 4.3 V (Read)
• Voltage, Output, Low: 0.4 V (Read)
• Voltage, Supply: 5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

M27C256B
Table 10.
1. T
2. V
3. Sampled only, not 100% tested.
Symbol Alt
t
t
)
GHQZ
EHQZ
t
t
t
t
AVQV
GLQV
AXQX
ELQV
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
ACC
t
t
t
CE
OE
OH
DF
DF
Read mode AC characteristics 2
Address Valid to
Output Valid
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
0
0
0
PP
-90
(1) (2)
and removed simultaneously or after V
90
90
40
30
30
CC
0
0
0
= 5V ± 5% or 5V ± 10%; V
-10
M27C256B
100
100
50
30
30
0
0
0
DC and AC parameters
-12
120
120
60
40
40
-15/-20/-25
PP
0
0
0
= V
PP
.
150
150
CC
65
50
50
17/24
Unit
ns
ns
ns
ns
ns
ns