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D421000C-70 Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
D421000C-70NEC140Yes

NEC D421000C-70** is a **1M-bit (128K x 8-bit) CMOS static RAM (SRAM)** manufactured by **NEC Electronics (now part of Renesas Electronics Corporation)**.

The NEC D421000C-70 is a 1M-bit (128K x 8-bit) CMOS static RAM (SRAM) manufactured by NEC Electronics (now part of Renesas Electronics Corporation).

Specifications:

  • Organization: 128K × 8-bit
  • Technology: CMOS
  • Access Time: 70 ns
  • Operating Voltage: 5V ±10%
  • Operating Temperature Range: 0°C to +70°C (commercial grade)
  • Package: 28-pin DIP (Dual In-line Package) or similar
  • Power Consumption:
  • Active: ~200 mW (typical)
  • Standby: ~10 mW (typical)
  • I/O Interface: Fully static operation, no clock or refresh required
  • Tri-State Outputs: Supports bus-oriented systems

Features:

  • High-Speed Operation: 70 ns access time suitable for various computing applications.
  • Low Power Consumption: CMOS technology ensures efficient power usage.
  • Wide Voltage Tolerance: Operates reliably within 4.5V to 5.5V range.
  • Direct Compatibility: TTL-compatible inputs and outputs.
  • Non-Volatile Data Retention: Data remains intact as long as power is supplied.

Applications:

  • Embedded systems
  • Cache memory
  • Industrial control systems
  • Networking equipment

This SRAM was commonly used in late 1980s to early 1990s computing and industrial applications. For exact pinouts or additional details, refer to the original NEC datasheet.

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