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Part Number: HM621664H
Description: The HM621664H/HM621864H is an asynchronous high speed static RAM organized as 64-kword
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HM621664H
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DataSheet
General Description
HM621664H General Description
The HM621664H/HM621864H is an asynchronous high speed static RAM organized as 64-kword×16/18- bit. It realize high speed access time (20/25 ns) with employing 0.8 mm CMOS process and high speed circuit designing technology. It is most appropriate for the application which requires high speed, high density memory and wide bit width configuration, such as cache and buffer memory in system. The HM621664H/HM621864H is packaged in 400-mil 44-pin SOJ for high density surface mounting.
HM621664H Maximum Ratings
| Parameter |
Symbol |
Value |
Unit |
| Voltage on any pin relative to VSS |
VCC |
0.5 to +7.0 |
V |
| Voltage on any pin relative to VSS | VT |
0.5 *1 to VCC + 0.5 |
V |
| Power dissipation |
PT |
1.0*2 / 1.5*3 |
W |
| Operating temperature range |
Topr |
0 to +70 |
°C |
| Storage temperature range |
Tstg |
55 to +125 |
°C |
| Storage temperature range under bias |
Tbias |
10 to +85 |
°C |
Notes:
1. 2.5 V for pulse width (under shoot) 10 ns.
2. at still air condition
3. at air flow 1.0 m/s
HM621664H Features
` Single 5 V supply: 5 V ± 10%
` Access time 20/25 ns (max)
` Completely static memory
- No clock or timing strobe required
` Equal access and cycle times
` Directly TTL compatible
- All inputs and outputs
` 400-mil 44-pin SOJ package
` Center VCC and VSS type pinout
` Access time 20/25 ns (max)
` Completely static memory
- No clock or timing strobe required
` Equal access and cycle times
` Directly TTL compatible
- All inputs and outputs
` 400-mil 44-pin SOJ package
` Center VCC and VSS type pinout
HM621664H Connection Diagram
HM621664H/HM621864H Series
PDF/DataSheet Download
- Datasheet: HM621664H/HM621864H Series
- File Size: 78126 KB
- Manufacturer: hitachi
- Click here to Download
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