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IS61C256AH-20JI from ICSI

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IS61C256AH-20JI

Manufacturer: ICSI, ISSI

32K x 8 HIGH-SPEED CMOS STATIC RAM

Partnumber Manufacturer Quantity Availability
IS61C256AH-20JI,IS61C256AH20JI ICSI, ISSI 157 In Stock

Description and Introduction

32K x 8 HIGH-SPEED CMOS STATIC RAM The IS61C256AH-20JI is a high-speed CMOS static RAM (SRAM) manufactured by Integrated Silicon Solution, Inc. (ISSI). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**  
- **Organization:** 32K x 8 (256K-bit)  
- **Operating Voltage:** 5V ±10%  
- **Access Time:** 20 ns  
- **Operating Temperature Range:** -40°C to +85°C (Industrial)  
- **Package:** 28-pin PLCC (Plastic Leaded Chip Carrier)  
- **Pin Count:** 28  
- **I/O Type:** Common I/O (input/output)  
- **Standby Current (Typical):** 10 µA (CMOS standby)  
- **Operating Current (Typical):** 40 mA (at 20 ns access time)  
- **Data Retention Voltage:** 2V (min)  
- **Cycle Time:** 20 ns  

### **Descriptions:**  
- The IS61C256AH-20JI is a **32K x 8-bit** CMOS static RAM designed for high-performance applications.  
- It features **low power consumption** in both active and standby modes, making it suitable for battery-powered systems.  
- The device is **fully static**, meaning no clock or refresh is required.  
- It is compatible with **TTL levels** for easy interfacing in mixed-voltage systems.  
- The industrial-grade temperature range (-40°C to +85°C) makes it suitable for harsh environments.  

### **Features:**  
- **High-speed access time:** 20 ns  
- **Low power consumption:**  
  - Active current: 40 mA (typical)  
  - Standby current: 10 µA (CMOS standby)  
- **Single 5V power supply**  
- **Tri-state outputs** for bus compatibility  
- **Fully static operation** (no refresh required)  
- **TTL-compatible inputs and outputs**  
- **Industrial temperature range (-40°C to +85°C)**  
- **Available in 28-pin PLCC package**  

This information is based solely on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

32K x 8 HIGH-SPEED CMOS STATIC RAM

Alternative Part Number

  • CY7C199-20JXC --: 32K x 8 asynchronous SRAM in a 300-mil SOJ package with 20 ns access time, functionally equivalent to the IS61C256AH-20JI and widely available.
  • AS7C256A-20JCN --: 32K x 8 low-power CMOS SRAM with 20 ns speed in a JEDEC SOJ package, a direct drop-in replacement for the IS61C256AH series.
  • IS62C256AL-20U --: 32K x 8 low-power SRAM with 20 ns access time from the same vendor family, offering compatible timing and pinout for the original design.
  • HM62256BLP-20 --: Well-established 32K x 8 low-power CMOS SRAM with 20 ns access time, pin-compatible with the IS61C256AH series for most designs.

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