Datasheet4U Logo Datasheet4U.com

DP8419 Datasheet (DP8417 - DP8419) 64k / 256k Dynamic RAM Controller/Drivers

Manufacturer: National Semiconductor (now Texas Instruments)

Download the DP8419 datasheet PDF. This datasheet also includes the DP8417 variant, as both parts are published together in a single manufacturer document.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (DP8417_NationalSemiconductor.pdf) that lists specifications for multiple related part numbers.

General Description

The DP8417 8418 8419 8419X represent a family of 256k DRAM Controller Drivers which are designed to provide ‘‘No-Waitstate’’ CPU interface to Dynamic RAM arrays of up to 2 Mbytes and larger Each device offers slight functional variations of the DP8419 design which are tailored for different system requirements All family members are fabricated using National’s new oxide isolated Advanced Low power Schottky (ALS) process and use design techniques which enable them to significantly out-perform all other LSI or discrete alternatives in speed level of integration and power consumption Each device integrates the following critical 256k DRAM controller functions on a single monolithic device ultra precise delay line 9-bit refresh counter fall-through row column and bank select input latches Row Column address muxing logic on-board high capacitive-load RAS CAS and Write Enable Address output drivers and precise control signal timing for all the above There are four device options of the basic DP8419 Controller The DP8417 is pin and function compatible with the DP8419 except that its outputs are TRI-STATE The DP8418 changes one pin and is specifically designed to offer an optimum interface to 32 bit microprocessors The DP8419X is functionally identical to the DP8419 but is available in a 52-pin DIP package which is upward pin compatible with National’s new DP8429D 1 Mbit DRAM Controller Driver Each device is available in plastic DIP Ceramic DIP and Plastic Chip Carrier (PCC) packaging (Continued) TRI-STATE is a registered trademark of National Semiconductor Corp PAL is a registered trademark of and used under license with Monolithic Memories Inc Operational

Overview

DP8417 NS32817 8418 32818 8419 32819 8419X 32819X 64k 256k Dynamic RAM Controller Drivers PRELIMINARY August 1989 DP8417 NS32817 8418 32818 8419 32819 8419X 32819X 64k 256k Dynamic RAM Controller.

Key Features

  • Y Y Y Y Y Y Y Y Y Y Makes DRAM Interface and refresh tasks appear virtually transparent to the CPU making DRAMs as easy to use as static RAMs Specifically designed to eliminate CPU wait states up to 10 MHz or beyond Eliminates 15 to 20 SSI MSI components for significant board real estate reduction system power savings and the elimination of chip-to-chip AC skewing On-board ultra precise delay line On-board high capacitive RAS CAS WE and address drivers (specified driving 88 DRAMs directly.

More Datasheets from National Semiconductor (now Texas Instruments)

Part Number Description
DP8417 (DP8417 - DP8419) 64k / 256k Dynamic RAM Controller/Drivers
DP8418 (DP8417 - DP8419) 64k / 256k Dynamic RAM Controller/Drivers
DP8402A Error Detection and Correction Circuits
DP8403 Error Detection and Correction Circuits
DP8404 Error Detection and Correction Circuits
DP8405 Error Detection and Correction Circuits
DP8406 32-Bit Parallel Error Detection and Correction Circuit
DP8420A (DP8420A - DP8422A) microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers
DP8420V microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers
DP8421A (DP8420A - DP8422A) microCMOS Programmable 256k/1M/4M Dynamic RAM Controller/Drivers