SRAM 64k x 4

Cross-Reference

BRAND	TAG	NUMBER	PIN COUNT	OUTPUT	MARKINGS
Cypress	CY7	192	DIP20 LCC44		CY7C192
Cypress	CY7	194	CY7C194
Cypress	CY7	195	CY7C195
Cypress	CY7	196	CY7C196
Cypress	CY7	67081	CY7C67081
Cypress	CY7	67082	CY7C67082
Fujitsu	MB	8184	MB81C84A
Fujitsu	MB	8186	MB81C86
Hitachi	HM	6208	HM6208
Hitachi	HM	6709	HM6709 HM6709AJP HM6709SHJP
Integrated Dev. Tech.	IDT	71258	IDT71258 IDT61258
Integrated Dev. Tech.	IDT	71281	IDT71281S IDT71281L
Integrated Dev. Tech.	IDT	71282	IDT71282S IDT71282L
Mitsubishi	M5M	5259	M5M5259B
Motorola	MCM	6209	MCM6209C
NEC	uPD	3254	uPD43254CR
Samsung	KM	41464	KM
Samsung	KM	64257	KM64257A KM64257AL
Samsung	KM	64258	KM64258B
Samsung	KM	64259	KM64259B
Samsung	KM	64260	KM64260B
Sony	CXK	54256	CXK54256
Toshiba	TC	55464	TC55464
Toshiba	TC	55465	TC55465

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

Size

bit	Byte (padded 0000xxxx)	Byte (unpadded)	Hex
256Kb	64KB	32KB	40000hex

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