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IS42S16400B1-7T from ISSI

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IS42S16400B1-7T

Manufacturer: ISSI

1 Meg Bits x 16 Bits x 4 Banks (64-MBIT) SYNCHRONOUS DYNAMIC RAM

Partnumber Manufacturer Quantity Availability
IS42S16400B1-7T,IS42S16400B17T ISSI 786 In Stock

Description and Introduction

1 Meg Bits x 16 Bits x 4 Banks (64-MBIT) SYNCHRONOUS DYNAMIC RAM The IS42S16400B1-7T is a synchronous DRAM (SDRAM) manufactured by Integrated Silicon Solution Inc. (ISSI). Below are the key specifications, descriptions, and features:  

### **Specifications:**  
- **Type:** 16M x 16-bit (256Mb) Synchronous DRAM  
- **Organization:** 4 Banks x 4M x 16-bit  
- **Voltage Supply:** 3.3V ± 0.3V  
- **Speed Grade:** -7T (143MHz clock frequency)  
- **Access Time:** 7ns (CL=3)  
- **Refresh:** 4,096 refresh cycles / 64ms  
- **Interface:** LVTTL  
- **Package:** 54-pin TSOP-II  

### **Descriptions:**  
- Fully synchronous operation with a single 3.3V power supply  
- Internal pipelined operation for high-speed data transfer  
- Programmable burst lengths (1, 2, 4, 8, or full page)  
- Auto refresh and self-refresh modes  
- CAS Latency (CL) options: 2, 3  

### **Features:**  
- **High Performance:** Supports 143MHz operation with low latency  
- **Low Power Consumption:** Auto power-down and self-refresh modes  
- **Burst Mode Support:** Sequential or interleaved burst ordering  
- **Industrial Temperature Range:** -40°C to +85°C  
- **RoHS Compliant:** Lead-free and halogen-free  

This SDRAM is commonly used in networking, industrial, and embedded applications requiring high-speed memory access.

Application Scenarios & Design Considerations

1 Meg Bits x 16 Bits x 4 Banks (64-MBIT) SYNCHRONOUS DYNAMIC RAM

Alternative Part Number

  • MT48LC4M16A2P-7E --: Same 64Mb SDR SDRAM organization (4M x 16) with 7ns speed grade and 54-pin TSOP package, widely available and pin-compatible replacement.
  • W9864G6JH-7 --: 64Mb SDR SDRAM in 4M x 16 configuration with comparable 7ns timing, common drop-in alternative for ISSI SDRAM parts.
  • AS4C4M16SA-7TCN --: Alliance Memory specializes in legacy SDRAM replacements; this 64Mb 4M x 16 device matches the speed and package of the IS42S16400B1-7T.

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