SRAM 64k x 4

Cross-Reference

BRAND	TAG	NUMBER	PIN COUNT	OUTPUT	MARKINGS
Cypress	CY	7C192			CY7C192
Cypress	CY	7C194	24 28	TS	CY7C194
Cypress	CY	7C195	24 28	TS	CY7C195
Cypress	CY	7C196	24 28	TS	CY7C196
Cypress	CY	7C67081			CY7C67081
Cypress	CY	7C67082			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	28	TS	IDT71281S IDT71281L
Integrated Dev. Tech.	IDT	71282	28	TS	IDT71282S IDT71282L
Mitsubishi	M5M	5259			M5M5259B
Motorola	MCM	6209			MCM6209C
NEC	uPD	43254			uPD43254CR
Paradigm	PDM	41298	DIP28-300mil SOJ28-300mil		PDM41298LA
Samsung	KM	64257			KM64257A KM64257AL
Samsung	KM	64258			KM64258B
Samsung	KM	64259	28	TS	KM64259B
Samsung	KM	64260	28	TS	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
         +--------+

        TSOP28 Type1 8x12
         +-------------+
     A10 |22         21| NC
     A11 |23         20| NC
     A12 |24         19| I/O3
     A13 |25         18| I/O2
     A14 |26         17| I/O1
     A15 |27         16| I/O0
     Vcc |28         15| *WE
      NC | 1 []      14| Vss
      A0 | 2         13| *OE
      A1 | 3         12| *CE
      A2 | 4         11| A9
      A3 | 5         10| A8
      A4 | 6          9| A7
      A5 | 7          8| A6
         +-------------+

External links

SRAM page on wikipedia

Files

• 
  CY7C194 CY7C195 CY7C196 Datasheet
• 
  IDT71281S IDT71281L IDT71282S IDT71282L Datasheet
• 
  KM64259B KM64260B Datasheet
• 
  PDM41298 Datasheet