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Part Number: HM624257A
Description: The Hitachi HM624257A is a high speed 1 M Static RAM organized as 262,144-word ×
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HM624257A
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DataSheet
General Description
HM624257A General Description
The Hitachi HM624257A is a high speed 1 M Static RAM organized as 262,144-word ×4-bit. It realizes high speed access time (25/35 ns) and low power consumption, employing the advanced CMOS process technology and high speed circuit designing technology. It is most advantageous for the field where high speed and high density memory is required, such as the cache memory for main frame or 32-bit MPU.
The HM624257A, packaged in a 400-mil plastic SOJ is available for high density mounting.
HM624257A Maximum Ratings
| Parameter |
Symbol |
Value |
Unit |
| Voltage on any pin relative to VSS |
VCC |
0.5*1 to +7.0 |
V |
| Power dissipation |
PT |
1.0 |
W |
| Operating temperature |
Topr |
0 to +70 |
°C |
| Storage temperature |
Tstg |
55 to +125 |
°C |
| Storage temperature range under bias |
Tbias |
10 to +85 |
°C |
HM624257A Features
• Single 5 V supply and high density 32-pin package (SOJ)
• High speed Access time: 25/35 ns (max)
• Low power dissipation
Active mode: 350 mW (typ)
Standby mode: 100 W (typ)
• Completely static memory
No clock or timing strobe required
• Equal access and cycle time
• Directly TTL compatible
All inputs and outputs
• High speed Access time: 25/35 ns (max)
• Low power dissipation
Active mode: 350 mW (typ)
Standby mode: 100 W (typ)
• Completely static memory
No clock or timing strobe required
• Equal access and cycle time
• Directly TTL compatible
All inputs and outputs
HM624257A Connection Diagram
HM624257A Series
PDF/DataSheet Download
- Datasheet: HM624257A Series
- File Size: 59196 KB
- Manufacturer: hitachi
- Click here to Download
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