MCM4164BP15 64Kbit Dynamic RAM IC DIP 16-Pin

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MCM4164BP15 64Kbit Dynamic RAM IC DIP 16-Pin The MCM4164BP15 is a Motorola-manufactured commercial‑grade 64 Kbit (65,536 × 1‑bit) dynamic random‑access memory chip. It provides fixed +5.0 V ±10 % single‑supply operation, a maximum access time of 150 ns, and a standard JEDEC DIP‑16 pinout. The device supports page‑mode read/write for faster sequential access and offers TTL‑compatible inputs with three‑state output buffers. It is fully cross‑compatible with the original 4164 family of TTL DRAMs. Features Organized as 65,536 Words of 1 Bit. Single +5 V operation (±10 %). Maximum access time: 150 ns. Low power dissipation: 275 mW maximum (Active) and 22 mW maximum (Standby). Three-state data output. Internal latches for address and data input. Early-write common I/O capability. 16K-compatible 128-cycle, 2 ms refresh. RAS-only refresh mode. CAS-controlled output. Upward pin compatibility with 16K RAM (MCM4116, MCM4517). Fast page-mode cycle time. Specifications ABSOLUTE MAXIMUM RATINGS Parameter Symbol Value Unit Voltage on Any Pin Relative to V SS (Except V CC ) V in , V out –1 to +7 V Voltage on V CC Supply Relative to V SS V CC –1 to +7 V Operating Temperature Range T A 0 to +70 °C Storage Temperature Range T stg –55 to +150 °C Power Dissipation P D 600 mW Data Out Current I out 50 mA RECOMMENDED OPERATING CONDITIONS Parameter Symbol Min Typ Max Unit Notes Supply Voltage (Operating Voltage Range) – V CC V CC 4.5 5.0 5.5 V 1 Supply Voltage (Operating Voltage Range) – V SS V SS 0 0 0 V 1 Logic 1 Voltage, All Inputs V IH 2.4 — 6.5 V 1 Logic 0 Voltage, All Inputs V IL −1.0 — 0.8 V 1 PINOUT Applications Restoration of vintage systems including Commodore 64/C128, Atari 800XL, Apple IIe/c and early Macintosh hardware. Teaching and experimentation in microcomputer architecture and DRAM timing. Maintenance and repair of electronics projects relying on 4164‑series DRAMs. Integration into retro-computing kits, arcade hardware, or bus‑compatible boards. Use in vintage memory testers and cross-reference modules. Documents MCM4164CP Datasheet (interchangeable with MCM4164BP15) .