– N EW P RODUCT I NTRODUCTION – MM54C89J Rochester Electronics has re-introduced and continues to manufacture critically needed semiconductors with the full authorization of the original manufacturer and an attention to quality that meets or exceeds the original component. Original Manufacturer: Re-introduced by Rochester Electronics on January, 12, 2012 MM54C89J Original Part Number: MM54C89J Description: 64-Bit SRAM Package: 16 pin DIP Manufacturing Flow: MTO Manufacturing Type: made from original National Semi wafers Related Devices [ by temperature / package type / speed / application ] MM54C89J/B MM54C89D MM54C89W MM54C89W/B MM54C89F MM74C89J MM74C89N MILITARY TEMPERATURE SRAM in a 16-pin ceramic DIP package The MM54C89/MM74C89 is a 16-word by 4-bit random access read/write memory. Inputs to the memory consist of four address lines, four data input lines, a write enable line and a memory enable line. The four binary address inputs are decoded internally to select each of the 16 possible word locations. It features a wide supply voltage range of 3.0V to 15V and a guaranteed noise margin of 1.0V. The four TRI-STATE data output lines working in conjunction with with the memory enable input provide for easy memory expansion. Worldwide Corporate Headquarters 16 Malcolm Hoyt Drive . Newburyport, MA 01950 phone 978.462.9332 . email [email protected] . web www.rocelec.com © Rochester Electronics, LLC - All Rights Reserved - 04062012