M27C256B-12F6 STMicroelectronics, M27C256B-12F6 Datasheet - Page 19

• Manufacturer Part Number: M27C256B-12F6
• Description: IC EPROM 256KBIT 120NS 28CDIP
• Manufacturer: STMicroelectronics

Specifications of M27C256B-12F6

• 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: -40°C ~ 85°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)
• Current, Supply: 30 mA
• Density: 256K
• Organization: 32K×8
• Package Type: FDIP28W
• Temperature, Operating: -40 to +85 °C
• Temperature, Operating, Maximum: 85 °C
• Temperature, Operating, Minimum: -40 °C
• Time, Access: 120 ns
• Time, Fall: ≤20 ns
• Time, Programmable: 100 μA
• Time, Rise: ≤20 ns
• Voltage, Input, High: 6 V (Read)
• Voltage, Input, High Level: 2 V (Min.)
• Voltage, Input, Low: 0.8 V (Read)
• Voltage, Input, Low Level: 0.8 V (Typ.)
• Voltage, Output, High: 4.3 V (Read)
• Voltage, Output, Low: 0.4 V (Read)
• Voltage, Programmable: 12.75 V ± 0.25 V
• Voltage, Supply: 5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-1647-5

M27C256B
5
Package mechanical
Figure 9.
1. Drawing is not to scale.
Table 12.
Symbol
A1
A2
A3
B1
D2
E1
eA
eB
C
D
N
A
B
E
S
e
L
FDIP28WB - 28 pin Ceramic Frit-seal DIP, with window, package outline
FDIP28WB - 28 pin Ceramic Frit-seal DIP, with window (round 0.280"),
package mechanical data
33.02
15.24
14.99
2.54
7.11
1.45
Typ
A2
B1
N
1
millimeters
S
36.50
13.06
16.18
0.51
3.91
3.89
0.41
0.23
3.18
1.52
Min
28
4°
–
–
–
–
–
–
D2
D
B
A1
e
37.34
13.36
18.03
Max
5.72
1.40
4.57
4.50
0.56
0.30
4.10
2.49
A3
E1
11°
–
–
–
–
–
–
A
L
E
0.057
1.300
0.600
0.100
0.590
0.280
Typ
eA
eB
FDIPW-a
C
inches
0.016
0.009
1.437
0.514
0.637
0.125
0.060
0.020
0.154
0.153
Package mechanical
Min
28
4°
–
–
–
–
–
–
0.225
0.055
0.180
0.177
0.022
0.012
1.470
0.526
0.710
0.161
0.098
Max
11°
–
–
–
–
–
–
19/24