File:4116 4132 4164 41128 41256 DRAM power pins (minuszerodegrees).jpg
Summary
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Diagram of the power pins of the 4116, 4132, 4164, 41128 and 41256 DRAM chips: ground, +5 V, +12 V and -5 V. On the 4116, pin 1 is -5 V, pin 8 is +12 V, pin 9 is +5 V and pin 16 is ground; on the 4164 and 41256, pin 8 is +5 V and pin 16 is ground. A note warns that '+5 V only' 16K chips (examples given: Mostek MK4516, Intel 2118, Hitachi HM4816, Fujitsu MB8118) moved +5 V from pin 9 to pin 8, so fitting one in a 4116 socket puts +12 V on its +5 V pin.
Source
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https://www.minuszerodegrees.net/memory/misc/4116_4132_4164_41128_41256_power.jpg (retrieved 2026-10-25), linked from minuszerodegrees.net's IBM 5150 RAM pages.
Author
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minuszerodegrees.net.
Licence
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No licence is stated on minuszerodegrees.net. Reproduced with credit for repair reference.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 21:31, 25 October 2026 | | 1,186 × 642 (228 KB) | Josh (talk | contribs) | Upload for repair guide |
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