SRAM 64k x 4

Static Random-Access Memory 64K x 4 (DIP24, 300mil)(DIP28, 300mil)(SOJ24, 300mil)(SOJ28, 300mil)

Size

bit	Byte	Hex
256Kb	32KB	40000hex

Cross-Reference

BRAND			TAG	NUMBER	CODES

Cypress			CY	   194	CY7C194 CY7C195 CY7C196 CY7C67081 CY7C67082
Fujitsu			MB	  8184	MB81C84A MB81C86
Hitachi			HM	  6208	HM6208 HM6709 HM6709AJP HM6709SHJP
IDT			IDT	 71258	IDT71258 IDT61258 IDT71281S IDT71281L IDT71282S IDT71282L
Mitsubishi		M5M	  5259	M5M5259B
Motorola		MCM	  6209	MCM6209C
NEC			uPD	  3254	uPD43254CR
Samsung			KM	 41464	KM64257A KM64257AL KM64257B KM64258B KM64259B KM64260B
Sony			CXK	 54256	CXK54256
Toshiba			TC	 55464	TC55464 TC55465

Pinout

DIP24 - SOJ24
         +---\/---+
      A6 | 1    24| Vcc
      A7 | 2    23| A5
      A8 | 3    22| A4
      A9 | 4    21| A3
     A10 | 5    20| A2
     A11 | 6    19| A1
     A12 | 7    18| A0
     A13 | 8    17| I/O3
     A14 | 9    16| I/O2
     A15 |10    15| I/O1
     *CE |11    14| I/O0
     GND |12    13| *WE
         +--------+

DIP28 - SOJ28
         +---\/---+
      NC | 1    28| Vcc
      A6 | 2    27| A5
      A7 | 3    26| A4
      A8 | 4    25| A3
      A9 | 5    24| A2
     A10 | 6    23| A1
     A11 | 7    22| A0
     A12 | 8    21| NC
     A13 | 9    20| *CE2/NC
     A14 |10    19| I/O3
     A15 |11    18| I/O2
    *CE1 |12    17| I/O1
     *OE |13    16| I/O0
     GND |14    15| *WE
         +--------+

External links

SRAM page on wikipedia

Files

• 

  CY7C194 CY7C195 CY7C196 Datasheet

• 

  IDT71281S IDT71281L IDT71282S IDT71282L Datasheet

• 

  KM64259B KM64260B Datasheet