MN4164P-12A DRAM 64K x1 Bit 120ns IC DIP-16
The MN4164P-12A is a single-chip dynamic RAM organized as 64K × 1 bit with a 120 ns access time, provided in a 16-pin DIP package. It implements the standard multiplexed row/column address scheme (RAS/CAS) used by early 64K DRAMs and is intended for use as general purpose byte-serial memory in small microcomputer and embedded systems designs. The device’s single-bit data path and simple control signals make it suitable where multiple devices are combined to form wider buses.
Reads and writes are controlled with the RAS/CAS timing sequence; addresses are applied as a multiplexed pair (row then column). The device requires periodic refresh of stored data (via standard RAS-only or RAS/CAS refresh cycles) and provides an active I/O pin that floats when deselected. Typical timing and control requirements align with other 4164-class DRAMs (120 ns access characteristic).
In practice the MN4164P-12A is used in small memory expansion banks or as part of multi-chip assemblies to create 8/16-bit wide modules. Its DIP-16 package makes it easy to prototype on breadboards or through-hole PCBs. For exact electrical limits, timing diagrams, and recommended refresh/operating conditions, refer to the scanned datasheet.
Features:
- 64K × 1-bit organization (65536 words of 1 bit each).
- 120 ns access time.
- Multiplexed row/column address inputs (RAS/CAS control).
- Single-bit data I/O (I/O pin that is active during read/write).
- Standard 16-pin DIP through-hole package.
- TTL-compatible control and address inputs.
- Supports standard RAS-only and RAS/CAS refresh cycles.
Specifications:
| Parameter | Value |
|---|---|
| Organization: | 64K × 1 bit |
| Access time: | 120 ns |
| Package: | 16-pin DIP (through-hole) |
| Addressing: | Multiplexed row/column (RAS/CAS) |
| Data I/O width: | 1 bit |
| Refresh: | RAS-only or RAS/CAS refresh (standard DRAM refresh) |
| Recommended use: | Memory expansion in microcomputer/embedded systems |
Pin Configuration:
Applications:
- Memory expansion for microprocessors.
- Small embedded system main/working memory.
- Multi-chip memory banks for 8/16-bit systems.
- Educational/prototyping through-hole DRAM modules.
Package Contents:
- 1x MN4164P-12A DRAM 64K x1 Bit 120ns IC DIP-16



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